Articles | Volume 23, issue 19
https://doi.org/10.5194/acp-23-12801-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-23-12801-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
12 Oct 2023
Research article |
| 12 Oct 2023
| 12 Oct 2023
3D assimilation and radiative impact assessment of aerosol black carbon over the Indian region using aircraft, balloon, ground-based, and multi-satellite observations
Nair Krishnan Kala
CORRESPONDING AUTHOR
Centre for Atmospheric and Oceanic Sciences, Indian Institute of
Science, Bengaluru, India
Divecha Centre for Climate Change, Indian Institute of Science,
Bengaluru, India
Narayana Sarma Anand
School of Physics, Indian Institute of Science Education and Research
Thiruvananthapuram, Kerala, India
Mohanan R. Manoj
Divecha Centre for Climate Change, Indian Institute of Science,
Bengaluru, India
Srinivasan Prasanth
Divecha Centre for Climate Change, Indian Institute of Science,
Bengaluru, India
Harshavardhana S. Pathak
Divecha Centre for Climate Change, Indian Institute of Science,
Bengaluru, India
Thara Prabhakaran
Indian Institute of Tropical Meteorology (IITM), Ministry of Earth
Sciences, Pune, Maharashtra, India
Pramod D. Safai
Indian Institute of Tropical Meteorology (IITM), Ministry of Earth
Sciences, Pune, Maharashtra, India
Krishnaswamy K. Moorthy
Divecha Centre for Climate Change, Indian Institute of Science,
Bengaluru, India
Sreedharan K. Satheesh
Centre for Atmospheric and Oceanic Sciences, Indian Institute of
Science, Bengaluru, India
Divecha Centre for Climate Change, Indian Institute of Science,
Bengaluru, India
DST-Centre of Excellence in Climate Change, Indian Institute of
Science, Bengaluru, Karnataka, India
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Subject: Aerosols | Research Activity: Field Measurements | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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This study provides valuable insights to improve cloud condensation nuclei (CCN) estimations at a high-altitude remote site which is influenced by nearby urban pollution. Understanding the factors that affect CCN estimations is essential to improve the CCN data coverage worldwide and assess aerosol–cloud interactions on a global scale. This is crucial for improving climate models, since aerosol–cloud interactions are the most important source of uncertainty in climate projections.
Lu Zhang, Michal Segal-Rozenhaimer, Haochi Che, Caroline Dang, Junying Sun, Ye Kuang, Paola Formenti, and Steven G. Howell
Atmos. Chem. Phys., 24, 13849–13864, https://doi.org/10.5194/acp-24-13849-2024, https://doi.org/10.5194/acp-24-13849-2024, 2024
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Using airborne measurements over the southeast Atlantic Ocean, we examined how much moisture aerosols take up during Africa’s biomass burning season. Our study revealed the important role of organic aerosols and introduced a predictive model for moisture uptake, accounting for organics, sulfate, and black carbon, summarizing results from various campaigns. These findings improve our understanding of aerosol–moisture interactions and their radiative effects in this climatically critical region.
Mary C. Robinson, Kaitlin Schueth, and Karin Ardon-Dryer
Atmos. Chem. Phys., 24, 13733–13750, https://doi.org/10.5194/acp-24-13733-2024, https://doi.org/10.5194/acp-24-13733-2024, 2024
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On 26 February 2023, New Mexico and West Texas were impacted by a severe dust storm. To analyze this storm, 28 meteorological stations and 19 PM2.5 and PM10 stations were used. Dust particles were in the air for 16 h, and dust storm conditions lasted for up to 120 min. Hourly PM2.5 and PM10 concentrations were up to 518 and 9983 µg m−3, respectively. For Lubbock, Texas, the maximum PM2.5 concentrations were the highest ever recorded.
Jerome D. Fast, Adam C. Varble, Fan Mei, Mikhail Pekour, Jason Tomlinson, Alla Zelenyuk, Art J. Sedlacek III, Maria Zawadowicz, and Louisa Emmons
Atmos. Chem. Phys., 24, 13477–13502, https://doi.org/10.5194/acp-24-13477-2024, https://doi.org/10.5194/acp-24-13477-2024, 2024
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Aerosol property measurements recently collected on the ground and by a research aircraft in central Argentina during the Cloud, Aerosol, and Complex Terrain Interactions (CACTI) campaign exhibit large spatial and temporal variability. These measurements coupled with coincident meteorological information provide a valuable data set needed to evaluate and improve model predictions of aerosols in a traditionally data-sparse region of South America.
Julika Zinke, Gabriel Pereira Freitas, Rachel Ann Foster, Paul Zieger, Ernst Douglas Nilsson, Piotr Markuszewski, and Matthew Edward Salter
Atmos. Chem. Phys., 24, 13413–13428, https://doi.org/10.5194/acp-24-13413-2024, https://doi.org/10.5194/acp-24-13413-2024, 2024
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Bioaerosols, which can influence climate and human health, were studied in the Baltic Sea. In May and August 2021, we used a sea spray simulation chamber during two ship-based campaigns to collect and measure these aerosols. We found that microbes were enriched in air compared to seawater. Bacterial diversity was analysed using DNA sequencing. Our methods provided consistent estimates of microbial emission fluxes, aligning with previous studies.
Chimurkar Navinya, Taveen Singh Kapoor, Gupta Anurag, Chandra Venkataraman, Harish C. Phuleria, and Rajan K. Chakrabarty
Atmos. Chem. Phys., 24, 13285–13297, https://doi.org/10.5194/acp-24-13285-2024, https://doi.org/10.5194/acp-24-13285-2024, 2024
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Brown carbon (BrC) aerosols show an order-of-magnitude variation in their light absorption strength. Our understanding of BrC from real-world biomass burning remains limited, complicating the determination of its radiative impact. Our study reports absorption properties of BrC emitted from four major biomass burning sources using field measurements in India. It develops an absorption parameterization for BrC and examines the spatial variability in BrC's absorption strength across India.
Yao Song, Jing Wei, Wenlong Zhao, Jinmei Ding, Xiangyu Pei, Fei Zhang, Zhengning Xu, Ruifang Shi, Ya Wei, Lu Zhang, Lingling Jin, and Zhibin Wang
EGUsphere, https://doi.org/10.5194/egusphere-2024-3298, https://doi.org/10.5194/egusphere-2024-3298, 2024
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This study investigates the size-resolved effective density (ρeff) of aerosol particles in Hangzhou using an AAC-SMPS. The ρeff values ranged from 1.47 to 1.63 g/cm3, increasing with particle diameter. Smaller particles showed significant diurnal density variations. The relationship between ρeff and particle diameter varies due to differences in the chemical composition of the particles. A new method to derive size-resolved chemical composition of particles from ρeff was proposed.
Sami D. Harni, Minna Aurela, Sanna Saarikoski, Jarkko V. Niemi, Harri Portin, Hanna Manninen, Ville Leinonen, Pasi Aalto, Phil K. Hopke, Tuukka Petäjä, Topi Rönkkö, and Hilkka Timonen
Atmos. Chem. Phys., 24, 12143–12160, https://doi.org/10.5194/acp-24-12143-2024, https://doi.org/10.5194/acp-24-12143-2024, 2024
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In this study, particle number size distribution data were used in a novel way in positive matrix factorization analysis to find aerosol source profiles in the area. Measurements were made in Helsinki at a street canyon and urban background sites between February 2015 and June 2019. Five different aerosol sources were identified. These sources underline the significance of traffic-related emissions in urban environments despite recent improvements in emission reduction technologies.
Natalie G. Ratcliffe, Claire L. Ryder, Nicolas Bellouin, Stephanie Woodward, Anthony Jones, Ben Johnson, Lisa-Maria Wieland, Maximilian Dollner, Josef Gasteiger, and Bernadett Weinzierl
Atmos. Chem. Phys., 24, 12161–12181, https://doi.org/10.5194/acp-24-12161-2024, https://doi.org/10.5194/acp-24-12161-2024, 2024
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Large mineral dust particles are more abundant in the atmosphere than expected and have different impacts on the environment than small particles, which are better represented in climate models. We use aircraft measurements to assess a climate model representation of large-dust transport. We find that the model underestimates the amount of large dust at all stages of transport and that fast removal of the large particles increases this underestimation with distance from the Sahara.
Sergio Rodríguez and Jessica López-Darias
Atmos. Chem. Phys., 24, 12031–12053, https://doi.org/10.5194/acp-24-12031-2024, https://doi.org/10.5194/acp-24-12031-2024, 2024
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Extreme Saharan dust events expanded northward to the Atlantic and Europe, prompting record-breaking PM10 and PM2.5 events. These episodes are caused by low-to-high dipole meteorology during hemispheric anomalies characterized by subtropical anticyclones shifting to higher latitudes, anomalous low pressures beyond the tropics and amplified Rossby waves. Extreme dust events occur in a paradoxical context of a multidecadal decrease in dust emissions, a topic that requires further investigation.
Valeria Mardoñez-Balderrama, Griša Močnik, Marco Pandolfi, Robin L. Modini, Fernando Velarde, Laura Renzi, Angela Marinoni, Jean-Luc Jaffrezo, Isabel Moreno R., Diego Aliaga, Federico Bianchi, Claudia Mohr, Martin Gysel-Beer, Patrick Ginot, Radovan Krejci, Alfred Wiedensohler, Gaëlle Uzu, Marcos Andrade, and Paolo Laj
Atmos. Chem. Phys., 24, 12055–12077, https://doi.org/10.5194/acp-24-12055-2024, https://doi.org/10.5194/acp-24-12055-2024, 2024
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Levels of black carbon (BC) are scarcely reported in the Southern Hemisphere, especially in high-altitude conditions. This study provides insight into the concentration level, variability, and optical properties of BC in La Paz and El Alto and at the Chacaltaya Global Atmosphere Watch Station. Two methods of source apportionment of absorption were tested and compared showing traffic as the main contributor to absorption in the urban area, in addition to biomass and open waste burning.
Krishnakant Budhavant, Mohanan Remani Manoj, Hari Ram Chandrika Rajendran Nair, Samuel Mwaniki Gaita, Henry Holmstrand, Abdus Salam, Ahmed Muslim, Sreedharan Krishnakumari Satheesh, and Örjan Gustafsson
Atmos. Chem. Phys., 24, 11911–11925, https://doi.org/10.5194/acp-24-11911-2024, https://doi.org/10.5194/acp-24-11911-2024, 2024
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The South Asian Pollution Experiment 2018 used access to three strategically located receptor observatories. Observational constraints revealed opposing trends in the mass absorption cross sections of black carbon (BC MAC) and brown carbon (BrC MAC) during long-range transport. Models estimating the climate effects of BC aerosols may have underestimated the ambient BC MAC over distant receptor areas, leading to discrepancies in aerosol absorption predicted by observation-constrained models.
Jieyao Liu, Fang Zhang, Jingye Ren, and Lu Chen
EGUsphere, https://doi.org/10.5194/egusphere-2024-2999, https://doi.org/10.5194/egusphere-2024-2999, 2024
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The particles mixing states and aging time scale are important for the evaluation of aerosols climate effects, but they are poorly parameterized in current models. We unravel the evolution of real-time mixing states and aging time scale of size-resolved particles based on field measurement in urban Beijing. This study provides observational basis for accurately parameterizing the aging time scale of aerosol particles in climate models.
Abigail S. Williams, Jeramy L. Dedrick, Lynn M. Russell, Florian Tornow, Israel Silber, Ann M. Fridlind, Benjamin Swanson, Paul J. DeMott, Paul Zieger, and Radovan Krejci
Atmos. Chem. Phys., 24, 11791–11805, https://doi.org/10.5194/acp-24-11791-2024, https://doi.org/10.5194/acp-24-11791-2024, 2024
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The measured aerosol size distribution modes reveal distinct properties characteristic of cold-air outbreaks in the Norwegian Arctic. We find higher sea spray number concentrations, smaller Hoppel minima, lower effective supersaturations, and accumulation-mode particle scavenging during cold-air outbreaks. These results advance our understanding of cold-air outbreak aerosol–cloud interactions in order to improve their accurate representation in models.
Franziska Vogel, Michael P. Adams, Larissa Lacher, Polly B. Foster, Grace C. E. Porter, Barbara Bertozzi, Kristina Höhler, Julia Schneider, Tobias Schorr, Nsikanabasi S. Umo, Jens Nadolny, Zoé Brasseur, Paavo Heikkilä, Erik S. Thomson, Nicole Büttner, Martin I. Daily, Romy Fösig, Alexander D. Harrison, Jorma Keskinen, Ulrike Proske, Jonathan Duplissy, Markku Kulmala, Tuukka Petäjä, Ottmar Möhler, and Benjamin J. Murray
Atmos. Chem. Phys., 24, 11737–11757, https://doi.org/10.5194/acp-24-11737-2024, https://doi.org/10.5194/acp-24-11737-2024, 2024
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Primary ice formation in clouds strongly influences their properties; hence, it is important to understand the sources of ice-nucleating particles (INPs) and their variability. We present 2 months of INP measurements in a Finnish boreal forest using a new semi-autonomous INP counting device based on gas expansion. These results show strong variability in INP concentrations, and we present a case that the INPs we observe are, at least some of the time, of biological origin.
Xiaojing Shen, Quan Liu, Junying Sun, Wanlin Kong, Qianli Ma, Bing Qi, Lujie Han, Yangmei Zhang, Linlin Liang, Lei Liu, Shuo Liu, Xinyao Hu, Jiayuan Lu, Aoyuan Yu, Huizheng Che, and Xiaoye Zhang
EGUsphere, https://doi.org/10.5194/egusphere-2024-2850, https://doi.org/10.5194/egusphere-2024-2850, 2024
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In this work, an automatic switched inlet system was developed and employed to investigate the aerosols and cloud droplets at a mountain site with frequent cloud processes. It showed different characteristics of cloud residual and interstitial particles. Stronger particle hygroscopicity reduced liquid water content and smaller cloud droplet diameters. This investigation contributes to understanding aerosol-cloud interactions by assessing the impact of aerosol particles on cloud microphysics.
Rebecca Dischl, Daniel Sauer, Christiane Voigt, Theresa Harlaß, Felicitas Sakellariou, Raphael Märkl, Ulrich Schumann, Monika Scheibe, Stefan Kaufmann, Anke Roiger, Andreas Dörnbrack, Charles Renard, Maxime Gauthier, Peter Swann, Paul Madden, Darren Luff, Mark Johnson, Denise Ahrens, Reetu Sallinen, Tobias Schripp, Georg Eckel, Uwe Bauder, and Patrick Le Clercq
Atmos. Chem. Phys., 24, 11255–11273, https://doi.org/10.5194/acp-24-11255-2024, https://doi.org/10.5194/acp-24-11255-2024, 2024
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In-flight measurements of aircraft emissions burning 100 % sustainable aviation fuel (SAF) show reduced particle number concentrations up to 41 % compared to conventional jet fuel. Particle emissions are dependent on engine power setting, flight altitude, and fuel composition. Engine models show a good correlation with measurement results. Future increased prevalence of SAF can positively influence the climate impact of aviation.
Zoé Brasseur, Julia Schneider, Janne Lampilahti, Ville Vakkari, Victoria A. Sinclair, Christina J. Williamson, Carlton Xavier, Dmitri Moisseev, Markus Hartmann, Pyry Poutanen, Markus Lampimäki, Markku Kulmala, Tuukka Petäjä, Katrianne Lehtipalo, Erik S. Thomson, Kristina Höhler, Ottmar Möhler, and Jonathan Duplissy
Atmos. Chem. Phys., 24, 11305–11332, https://doi.org/10.5194/acp-24-11305-2024, https://doi.org/10.5194/acp-24-11305-2024, 2024
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Ice-nucleating particles (INPs) strongly influence the formation of clouds by initiating the formation of ice crystals. However, very little is known about the vertical distribution of INPs in the atmosphere. Here, we present aircraft measurements of INP concentrations above the Finnish boreal forest. Results show that near-surface INPs are efficiently transported and mixed within the boundary layer and occasionally reach the free troposphere.
Piotr Markuszewski, E. Douglas Nilsson, Julika Zinke, E. Monica Mårtensson, Matthew Salter, Przemysław Makuch, Małgorzata Kitowska, Iwona Niedźwiecka-Wróbel, Violetta Drozdowska, Dominik Lis, Tomasz Petelski, Luca Ferrero, and Jacek Piskozub
Atmos. Chem. Phys., 24, 11227–11253, https://doi.org/10.5194/acp-24-11227-2024, https://doi.org/10.5194/acp-24-11227-2024, 2024
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Our research provides new insights into the study of sea spray aerosol (SSA) emissions in the Baltic Sea and North Atlantic. We observed that SSA flux is suppressed during increased marine biological activity in the Baltic Sea. At the same time, the influence of wave age showed higher SSA emissions in the Baltic Sea for younger waves compared to the Atlantic Ocean. These insights underscore the complex interplay between biological activity and physical dynamics in regulating SSA emissions.
Heather Guy, Andrew S. Martin, Erik Olson, Ian M. Brooks, and Ryan R. Neely III
Atmos. Chem. Phys., 24, 11103–11114, https://doi.org/10.5194/acp-24-11103-2024, https://doi.org/10.5194/acp-24-11103-2024, 2024
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Aerosol particles impact cloud properties which influence Greenland Ice Sheet melt. Understanding the aerosol population that interacts with clouds is important for constraining future melt. Measurements of aerosols at cloud height over Greenland are rare, and surface measurements are often used to investigate cloud–aerosol interactions. We use a tethered balloon to measure aerosols up to cloud base and show that surface measurements are often not equivalent to those just below the cloud.
Kouji Adachi, Jack E. Dibb, Joseph M. Katich, Joshua P. Schwarz, Hongyu Guo, Pedro Campuzano-Jost, Jose L. Jimenez, Jeff Peischl, Christopher D. Holmes, and James Crawford
Atmos. Chem. Phys., 24, 10985–11004, https://doi.org/10.5194/acp-24-10985-2024, https://doi.org/10.5194/acp-24-10985-2024, 2024
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We examined aerosol particles from wildfires and identified tarballs (TBs) from the Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ) campaign. This study reveals the compositions, abundance, sizes, and mixing states of TBs and shows that TBs formed as the smoke aged for up to 5 h. This study provides measurements of TBs from various biomass-burning events and ages, enhancing our knowledge of TB emissions and our understanding of their climate impact.
Sihan Liu, Honglei Wang, Delong Zhao, Wei Zhou, Yuanmou Du, Zhengguo Zhang, Peng Cheng, Tianliang Zhao, Yue Ke, Zihao Wu, and Mengyu Huang
EGUsphere, https://doi.org/10.5194/egusphere-2024-2756, https://doi.org/10.5194/egusphere-2024-2756, 2024
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To understand the effect of aerosols on the vertical distribution of stratocumulus microphysical quantities in southwest China, the daily variation characteristics and formation mechanism of the vertical profiles of stratocumulus microphysical characteristics in this region were described by using the data of 9 cloud-crossing aircraft observations over Guangxi from October 10 to November 3, 2020.
Aoyuan Yu, Xiaojing Shen, Qianli Ma, Jiayuan Lu, Xinyao Hu, Yangmei Zhang, Quan Liu, Linlin Liang, Lei Liu, Shuo Liu, Hongfei Tong, Huizheng Che, Xiaoye Zhang, and Junying Sun
EGUsphere, https://doi.org/10.5194/egusphere-2024-2232, https://doi.org/10.5194/egusphere-2024-2232, 2024
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In this work, we utilized the VH-TDMA system to investigate the hygroscopicity and volatility, as well as the hygroscopicity after heated of submicron aerosols in urban Beijing during the autumn of 2023 for the first time. We analyzed the size-resolved characteristics of hygroscopicity and volatility, the relationship between hygroscopic and volatile properties, as well as the hygroscopicity of heated submicron aerosols.
Jia Sun, Markus Hermann, Kay Weinhold, Maik Merkel, Wolfram Birmili, Yifan Yang, Thomas Tuch, Harald Flentje, Björn Briel, Ludwig Ries, Cedric Couret, Michael Elsasser, Ralf Sohmer, Klaus Wirtz, Frank Meinhardt, Maik Schütze, Olaf Bath, Bryan Hellack, Veli-Matti Kerminen, Markku Kulmala, Nan Ma, and Alfred Wiedensohler
Atmos. Chem. Phys., 24, 10667–10687, https://doi.org/10.5194/acp-24-10667-2024, https://doi.org/10.5194/acp-24-10667-2024, 2024
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We investigated the characteristics of new particle formation (NPF) for various environments from urban background to high Alpine and the impacts of NPF on cloud condensation nuclei and aerosol radiative forcing. NPF features differ between site categories, implying the crucial role of local environmental factors such as the degree of emissions and meteorological conditions. The results also underscore the importance of local environments when assessing the impact of NPF on climate in models.
Baptiste Testa, Lukas Durdina, Jacinta Edebeli, Curdin Spirig, and Zamin A. Kanji
Atmos. Chem. Phys., 24, 10409–10424, https://doi.org/10.5194/acp-24-10409-2024, https://doi.org/10.5194/acp-24-10409-2024, 2024
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Aviation soot residuals released from contrails can become compacted upon sublimation of the ice crystals, generating new voids in the aggregates where ice nucleation can occur. Here we show that contrail-processed soot is highly compact but that it remains unable to form ice at a relative humidity different from that required for the formation of background cirrus from the more ubiquitous aqueous solution droplets, suggesting that it will not perturb cirrus cloud formation via ice nucleation.
Roman Pohorsky, Andrea Baccarini, Natalie Brett, Brice Barret, Slimane Bekki, Gianluca Pappaccogli, Elsa Dieudonné, Brice Temime-Roussel, Barbara D'Anna, Meeta Cesler-Maloney, Antonio Donateo, Stefano Decesari, Kathy S. Law, William R. Simpson, Javier Fochesatto, Steve R. Arnold, and Julia Schmale
EGUsphere, https://doi.org/10.5194/egusphere-2024-2863, https://doi.org/10.5194/egusphere-2024-2863, 2024
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This study presents an analysis of vertical measurements of pollution in an Alaskan city during winter. It investigates the relationship between the atmospheric structure and the layering of aerosols and trace gases. Results indicate an overall very shallow surface mixing layer. The height of this layer is strongly influenced by a local shallow wind. The study also provides information on the pollution chemical composition at different altitudes, including pollution signatures from power plants.
Lingjun Li, Mengren Li, Xiaolong Fan, Yuping Chen, Ziyi Lin, Anqi Hou, Siqing Zhang, Ronghua Zheng, and Jinsheng Chen
EGUsphere, https://doi.org/10.5194/egusphere-2024-2376, https://doi.org/10.5194/egusphere-2024-2376, 2024
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Aerosol hygroscopicity has a great impact on regional and global climate, air quality. Here, we show differences and variations in f(RH) between NPF and Non-NPF days and the effect of aerosol chemical compositions on f(RH) in Xiamen, the coastal city of southeast China by in situ observations. The findings are helpful for the further understanding about aerosol hygroscopicity in the coastal city, and the use of hygroscopic growth factors in the models of air quality and climate change.
Kunfeng Gao, Franziska Vogel, Romanos Foskinis, Stergios Vratolis, Maria I. Gini, Konstantinos Granakis, Anne-Claire Billault-Roux, Paraskevi Georgakaki, Olga Zografou, Prodromos Fetfatzis, Alexis Berne, Alexandros Papayannis, Konstantinos Eleftheridadis, Ottmar Möhler, and Athanasios Nenes
Atmos. Chem. Phys., 24, 9939–9974, https://doi.org/10.5194/acp-24-9939-2024, https://doi.org/10.5194/acp-24-9939-2024, 2024
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Ice nucleating particle (INP) concentrations are required for correct predictions of clouds and precipitation in a changing climate, but they are poorly constrained in climate models. We unravel source contributions to INPs in the eastern Mediterranean and find that biological particles are important, regardless of their origin. The parameterizations developed exhibit superior performance and enable models to consider biological-particle effects on INPs.
Alexandra Kuwano, Amato T. Evan, Blake Walkowiak, and Robert Frouin
Atmos. Chem. Phys., 24, 9843–9868, https://doi.org/10.5194/acp-24-9843-2024, https://doi.org/10.5194/acp-24-9843-2024, 2024
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The dust direct radiative effect is highly uncertain. Here we used new measurements collected over 3 years and during dust storms at a field site in a desert region in the southwestern United States to estimate the regional dust direct radiative effect. We also used novel soil mineralogy retrieved from an airborne spectrometer to estimate this parameter with model output. We find that, in this region, dust has a minimal net cooling effect on this region's climate.
Denghui Ji, Mathias Palm, Matthias Buschmann, Kerstin Ebell, Marion Maturilli, Xiaoyu Sun, and Justus Notholt
EGUsphere, https://doi.org/10.5194/egusphere-2024-2241, https://doi.org/10.5194/egusphere-2024-2241, 2024
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Our study explores how certain aerosols, like sea salt, affect infrared heat radiation in the Arctic, potentially speeding up warming. We used advanced technology to measure aerosol composition and found that these particles grow with humidity, significantly increasing their heat-trapping effect in the infrared region, especially in winter. Our findings suggest these aerosols could be a key factor in Arctic warming, emphasizing the importance of understanding aerosols for climate prediction.
Jutta Kesti, Ewan J. O'Connor, Anne Hirsikko, John Backman, Maria Filioglou, Anu-Maija Sundström, Juha Tonttila, Heikki Lihavainen, Hannele Korhonen, and Eija Asmi
Atmos. Chem. Phys., 24, 9369–9386, https://doi.org/10.5194/acp-24-9369-2024, https://doi.org/10.5194/acp-24-9369-2024, 2024
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The study combines aerosol particle measurements at the surface and vertical profiling of the atmosphere with a scanning Doppler lidar to investigate how particle transportation together with boundary layer evolution can affect particle and SO2 concentrations at the surface in the Arabian Peninsula region. The instrumentation enabled us to see elevated nucleation mode particle and SO2 concentrations at the surface when air masses transported from polluted areas are mixed in the boundary layer.
Jiangchuan Tao, Biao Luo, Weiqi Xu, Gang Zhao, Hanbin Xu, Biao Xue, Miaomiao Zhai, Wanyun Xu, Huarong Zhao, Sanxue Ren, Guangsheng Zhou, Li Liu, Ye Kuang, and Yele Sun
Atmos. Chem. Phys., 24, 9131–9154, https://doi.org/10.5194/acp-24-9131-2024, https://doi.org/10.5194/acp-24-9131-2024, 2024
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Using simultaneous measurements of DMA–CCNC, H(/V)TDMA, and DMA–SP2, impacts of primary emissions and secondary aerosol formations on changes in aerosol physicochemical properties were comprehensively investigated. It was found that intercomparisons among aerosol mixing-state parameters derived from different techniques can help us gain more insight into aerosol physical properties which, in turn, will aid the investigation of emission characteristics and secondary aerosol formation pathways.
Haibiao Chen, Caiqing Yan, Liubin Huang, Lin Du, Yang Yue, Xinfeng Wang, Qingcai Chen, Mingjie Xie, Junwen Liu, Fengwen Wang, Shuhong Fang, Qiaoyun Yang, Hongya Niu, Mei Zheng, Yan Wu, and Likun Xue
EGUsphere, https://doi.org/10.5194/egusphere-2024-2416, https://doi.org/10.5194/egusphere-2024-2416, 2024
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A comprehensive understanding of the optical properties of brown carbon (BrC) is essential to accurately assess its climatic effects. Based on multi-site spectroscopic measurements, this study demonstrated the significant spatial heterogeneity in the optical and structural properties of water-soluble BrC (WS-BrC) in different regions of China, and revealed factors affecting WS-BrC light absorption and the relationship between fluorophores and light absorption of WS-BrC.
Ludovico Di Antonio, Claudia Di Biagio, Paola Formenti, Aline Gratien, Vincent Michoud, Christopher Cantrell, Astrid Bauville, Antonin Bergé, Mathieu Cazaunau, Servanne Chevaillier, Manuela Cirtog, Patrice Coll, Barbara D'Anna, Joel F. de Brito, David O. De Haan, Juliette R. Dignum, Shravan Deshmukh, Olivier Favez, Pierre-Marie Flaud, Cecile Gaimoz, Lelia N. Hawkins, Julien Kammer, Brigitte Language, Franck Maisonneuve, Griša Močnik, Emilie Perraudin, Jean-Eudes Petit, Prodip Acharja, Laurent Poulain, Pauline Pouyes, Eva Drew Pronovost, Véronique Riffault, Kanuri I. Roundtree, Marwa Shahin, Guillaume Siour, Eric Villenave, Pascal Zapf, Gilles Foret, Jean-François Doussin, and Matthias Beekmann
EGUsphere, https://doi.org/10.5194/egusphere-2024-2299, https://doi.org/10.5194/egusphere-2024-2299, 2024
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The spectral complex refractive index (CRI) and single scattering albedo were retrieved from submicron aerosol measurements at three sites within the greater Paris area during the ACROSS field campaign (June–July 2022). Measurements revealed the urban emission impact on the surrounding areas. The CRI full period averages at 520 nm were 1.41–0.037i (urban), 1.52–0.038i (peri-urban), 1.50−0.025i (rural). Organic aerosols dominated the aerosol mass and contributed up to 22% of absorption at 370 nm.
Elena Bazo, Daniel Perez-Ramirez, Antonio Valenzuela, Vanderlei Martins, Gloria Titos, Alberto Cazorla, Fernando Rejano, Diego Patrón, Arlett Diaz-Zurita, Francisco Jose Garcia-Izquierdo, David Fuertes, Lucas Alados-Arboledas, and Francisco Jose Olmo
EGUsphere, https://doi.org/10.5194/egusphere-2024-2080, https://doi.org/10.5194/egusphere-2024-2080, 2024
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This works analyses aerosol scattering phase function for transported Saharan dust to the city of Granada – located in southwestern Europe. We use the novel technique polar imaging nephelometry that helps to determine the phase functions using a CCD camara. The capability of measuring with polarized light helps to inferr new properties about the mixture of Saharan dust particles with other of anthropogenic origin.
Marco A. Franco, Rafael Valiati, Bruna A. Holanda, Bruno B. Meller, Leslie A. Kremper, Luciana V. Rizzo, Samara Carbone, Fernando G. Morais, Janaína P. Nascimento, Meinrat O. Andreae, Micael A. Cecchini, Luiz A. T. Machado, Milena Ponczek, Ulrich Pöschl, David Walter, Christopher Pöhlker, and Paulo Artaxo
Atmos. Chem. Phys., 24, 8751–8770, https://doi.org/10.5194/acp-24-8751-2024, https://doi.org/10.5194/acp-24-8751-2024, 2024
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The Amazon wet-season atmosphere was studied at the Amazon Tall Tower Observatory site, revealing vertical variations (between 60 and 325 m) in natural aerosols. Daytime mixing contrasted with nighttime stratification, with distinct rain-induced changes in aerosol populations. Notably, optical property recovery at higher levels was faster, while near-canopy aerosols showed higher scattering efficiency. These findings enhance our understanding of aerosol impacts on climate dynamics.
Kristina Pistone, Eric M. Wilcox, Paquita Zuidema, Marco Giordano, James Podolske, Samuel E. LeBlanc, Meloë Kacenelenbogen, Steven G. Howell, and Steffen Freitag
Atmos. Chem. Phys., 24, 7983–8005, https://doi.org/10.5194/acp-24-7983-2024, https://doi.org/10.5194/acp-24-7983-2024, 2024
Short summary
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The springtime southeast Atlantic atmosphere contains lots of smoke from continental fires. This smoke travels with water vapor; more smoke means more humidity. We use aircraft observations and models to describe how the values change through the season and over the region. We sort the atmosphere into different types by vertical structure and amount of smoke and humidity. Since our work shows how frequently these components coincide, it helps to better quantify heating effects over this region.
Corina Wieber, Lasse Z. Jensen, Leendert Vergeynst, Lorenz Maire, Thomas Juul-Pedersen, Kai Finster, and Tina Šantl-Temkiv
EGUsphere, https://doi.org/10.5194/egusphere-2024-1633, https://doi.org/10.5194/egusphere-2024-1633, 2024
Short summary
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The Arctic region is subjected to profound changes due to the warming climate. Ice nucleating particles (INPs) in the seawater can get transported to the atmosphere and impact cloud formation. However, the sources of characteristics of INPs in the marine areas are poorly understood. We investigated the INPs in seawater from Greenlandic fjords and identified a seasonal variability and highly active INPs originating from terrestrial sources.
Haifeng Yu, Yunhua Chang, Lin Cheng, Yusen Duan, and Jianlin Hu
EGUsphere, https://doi.org/10.5194/egusphere-2024-1488, https://doi.org/10.5194/egusphere-2024-1488, 2024
Short summary
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This study presents long-term measurements and comprehensive analysis of carbonaceous aerosols in PM2.5 in Shanghai. We further estimated POC and SOC levels, examining their temporal variations on interannual, monthly, seasonal, and diurnal scales. Through rigorous statistical analysis and correlation studies with meteorological parameters and pollutant concentrations, the origins, formation mechanisms, and spatial distribution patterns of SOC were elucidated.
Yange Deng, Hiroshi Tanimoto, Kohei Ikeda, Sohiko Kameyama, Sachiko Okamoto, Jinyoung Jung, Young Jun Yoon, Eun Jin Yang, and Sung-Ho Kang
Atmos. Chem. Phys., 24, 6339–6357, https://doi.org/10.5194/acp-24-6339-2024, https://doi.org/10.5194/acp-24-6339-2024, 2024
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Black carbon (BC) aerosols play important roles in Arctic climate change, yet they are not well understood because of limited observational data. We observed BC mass concentrations (mBC) in the western Arctic Ocean during summer and early autumn 2016–2020. The mean mBC in 2019 was much higher than in other years. Biomass burning was likely the dominant BC source. Boreal fire BC transport occurring near the surface and/or in the mid-troposphere contributed to high-BC events in the Arctic Ocean.
Máté Vörösmarty, Philip K. Hopke, and Imre Salma
Atmos. Chem. Phys., 24, 5695–5712, https://doi.org/10.5194/acp-24-5695-2024, https://doi.org/10.5194/acp-24-5695-2024, 2024
Short summary
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The World Health Organization identified ultrafine particles, which make up most of the particle number concentrations, as a potential risk factor for humans. The sources of particle numbers are very different from those of the particulate matter mass. We performed source apportionment of size-segregated particle number concentrations over the diameter range of 6–1000 nm in Budapest for 11 full years. Six source types were identified, characterized and quantified.
Gabriel Pereira Freitas, Ben Kopec, Kouji Adachi, Radovan Krejci, Dominic Heslin-Rees, Karl Espen Yttri, Alun Hubbard, Jeffrey M. Welker, and Paul Zieger
Atmos. Chem. Phys., 24, 5479–5494, https://doi.org/10.5194/acp-24-5479-2024, https://doi.org/10.5194/acp-24-5479-2024, 2024
Short summary
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Bioaerosols can participate in ice formation within clouds. In the Arctic, where global warming manifests most, they may become more important as their sources prevail for longer periods of the year. We have directly measured bioaerosols within clouds for a full year at an Arctic mountain site using a novel combination of cloud particle sampling and single-particle techniques. We show that bioaerosols act as cloud seeds and may influence the presence of ice within clouds.
Cited articles
Ackerman, A. S., Toon, O., Stevens, D., Heymsfield, A., Ramanathan, V., and
Welton, E.: Reduction of tropical cloudiness by soot, Science, 288,
1042–1047, https://doi.org/10.1126/science.288.5468.1042, 2000.
Anenberg, S. C., Talgo, K., Arunachalam, S., Dolwick, P., Jang, C., and West, J. J.: Impacts of global, regional, and sectoral black carbon emission reductions on surface air quality and human mortality, Atmos. Chem. Phys., 11, 7253–7267, https://doi.org/10.5194/acp-11-7253-2011, 2011.
Arun, B. S., Aswini, A. R., Gogoi, M. M., Hegde, P., Kompalli, S. K.,
Sharma, P., and Babu, S. S.: Physico-chemical and optical properties of
aerosols at a background site (∼ 4 km a.s.l.) in the western
Himalayas, Atmos. Environ., 218, 117017, https://doi.org/10.1016/j.atmosenv.2019.117017, 2019.
Arun, B. S., Gogoi, M. M., Hegde, P., Borgohain, A., Boreddy, S. K., Kundu,
S. S., and Babu, S. S.: Carbonaceous Aerosols over Lachung in the Eastern
Himalayas: Primary Sources and Secondary Formation of Organic Aerosols in a
Remote High-Altitude Environment, ACS Earth and Space Chemistry, 5,
2493–2506, 2021.
Babu, S. S. and Moorthy, K. K.: Anthropogenic impact on aerosol black carbon
mass concentration at a tropical coastal station: A case study, Curr.
Sci., 81, 1208–1214,
2001.
Babu, S. S. and Moorthy, K. K.: Aerosol black carbon over a tropical coastal
station in India, Geophys. Res. Lett., 29, 1311–1314, 2002.
Babu, S. S., Moorthy, K. K., and Satheesh, S. K.: Aerosol black carbon over
Arabian Sea during intermonsoon and summer monsoon seasons, Geophys. Res. Lett., 31, L06104, https://doi.org/10.1029/2003GL018716, 2004.
Babu, S. S., Satheesh, S. K., Moorthy, K. K., Dutt, C. B. S., Nair, V. S.,
Alappattu, D. P., and Kunhikrishnan, P.: Aircraft measurements of aerosol
black carbon from a coastal location in the north-east part of peninsular
India during ICARB, J. Earth Syst. Sci., 117, 263–271,
https://doi.org/10.1007/s12040-008-0030-1, 2008.
Babu, S. S., Moorthy, K. K., and Satheesh, S. K.: Vertical and horizontal
gradients in aerosol black carbon and its mass fraction to composite
aerosols over the east coast of Peninsular India from Aircraft measurements,
Adv. Meteorol., 2010, 812075, https://doi.org/10.1155/2010/812075, 2010.
Babu, S. S., Moorthy, K. K., Manchanda, R. K., Sinha, P. R., Satheesh, S.
K., Vajja, D. P., Srinivasan, S., and Kumar, V. A.: Free tropospheric black
carbon aerosol measurements using high altitude balloon: Do BC layers build
“their own homes” up in the atmosphere?, Geophys. Res. Lett., 38, L08803,
https://doi.org/10.1029/2011GL046654, 2011a.
Babu, S. S., Chaubey, J. P., Moorthy, K. K., Gogoi, M. M., Kompalli, S. K.,
Sreekanth, V., Bagare, S., Bhatt, B. C., Gaur, V. K., and Prabhu, T. P.:
High altitude (∼ 4520 m a.m.s.l.) measurements of black carbon aerosols
over western trans-Himalayas: Seasonal heterogeneity and source
apportionment, J. Geophys. Res.-Atmos., 116, D24201,
https://doi.org/10.1029/2011JD016722, 2011b.
Babu, S. S., Nair, V. S., Gogoi, M. M., and Moorthy, K. K.: Seasonal
variation of vertical distribution of aerosol single scattering albedo over
Indian sub-continent: RAWEX aircraft observations, Atmos. Environ.,
125, 312–323, https://doi.org/10.1016/j.atmosenv.2015.09.041, 2016.
Badarinath, K., Latha, K. M., Chand, T. K., Gupta, P. K., Ghosh, A., Jain,
S., Gera, B., Singh, R., Sarkar, A., and Singh, N.: Characterization of
aerosols from biomass burning – a case study from Mizoram (Northeast),
India, Chemosphere, 54, 167–175,
https://doi.org/10.1016/j.chemosphere.2003.08.032, 2004.
Bali, K., Mishra, A. K., and Singh, S.: Impact of anomalous forest fire on
aerosol radiative forcing and snow cover over Himalayan region, Atmos. Environ., 150, 264–275, https://doi.org/10.1016/J.ATMOSENV.2016.11.061,
2017.
Banerjee, P., Satheesh, S. K., Moorthy, K. K., Nanjundiah, R. S., and Nair,
V. S.: Long-range transport of mineral dust to the northeast Indian Ocean:
Regional versus remote sources and the implications, J. Climate, 32,
1525–1549, 2019.
Beegum, S. N., Moorthy, K. K., Babu, S. S., Satheesh, S. K., Vinoj, V.,
Badarinath, K., Safai, P., Devara, P., Singh, S., and Dumka, U.: Spatial
distribution of aerosol black carbon over India during pre-monsoon season,
Atmos. Environ., 43, 1071–1078,
https://doi.org/10.1016/j.atmosenv.2008.11.042, 2009.
Benedetti, A. and Fisher, M.: Background error statistics for aerosols,
Q. J. Roy. Meteor. Soc., 133,
391–405, https://doi.org/10.1002/qj.37, 2007.
Benedetti, A., Morcrette, J. J., Boucher, O., Dethof, A., Engelen, R.,
Fisher, M., Flentje, H., Huneeus, N., Jones, L., and Kaiser, J.: Aerosol
analysis and forecast in the European centre for medium-range weather
forecasts integrated forecast system: 2. Data assimilation, J. Geophys. Res.-Atmos., 114, D13205, https://doi.org/10.1029/2008JD011115, 2009.
Bond, T. C., Doherty, S. J., Fahey, D. W., Forster, P. M., Berntsen, T.,
DeAngelo, B. J., Flanner, M. G., Ghan, S., Kärcher, B., and Koch, D.:
Bounding the role of black carbon in the climate system: A scientific
assessment, J. Geophys. Res.-Atmos., 118, 5380–5552,
https://doi.org/10.1002/jgrd.50171, 2013.
Chin, M., Diehl, T., Ginoux, P., and Malm, W.: Intercontinental transport of pollution and dust aerosols: implications for regional air quality, Atmos. Chem. Phys., 7, 5501–5517, https://doi.org/10.5194/acp-7-5501-2007, 2007.
Chinnam, N., Dey, S., Tripathi, S., and Sharma, M.: Dust events in Kanpur,
northern India: Chemical evidence for source and implications to radiative
forcing, Geophys. Res. Lett., 33, L08803, https://doi.org/10.1029/2005GL025278, 2006.
Chuang, C. C., Penner, J. E., Prospero, J. M., Grant, K. E., Rau, G. H., and
Kawamoto, K.: Cloud susceptibility and the first aerosol indirect forcing:
Sensitivity to black carbon and aerosol concentrations, J. Geophys. Res.-Atmos., 107, AAC 10-11–AAC 10-23,
https://doi.org/10.1029/2000JD000215, 2002.
Chung, C. E., Ramanathan, V., Kim, D., and Podgorny, I.: Global
anthropogenic aerosol direct forcing derived from satellite and ground-based
observations, J. Geophys. Res.-Atmos., 110, D24207,
https://doi.org/10.1029/2005JD006356, 2005.
Clarke, A., Shinozuka, Y., Kapustin, V., Howell, S., Huebert, B., Doherty,
S., Anderson, T., Covert, D., Anderson, J., and Hua, X.: Size distributions
and mixtures of dust and black carbon aerosol in Asian outflow:
Physiochemistry and optical properties, J. Geophys. Res.-Atmos., 109, D15S09, https://doi.org/10.1029/2003JD004378, 2004.
Cressman, G. P.: An operational objective analysis system, Mon. Weather
Rev., 87, 367–374,
https://doi.org/10.1175/1520-0493(1959)087{%}3C0367:AOOAS{%}3E2.0.CO;2,
1959.
De Laat, A., Stein Zweers, D. C., Boers, R., and Tuinder, O. N.: A solar
escalator: Observational evidence of the self-lifting of smoke and aerosols
by absorption of solar radiation in the February 2009 Australian Black
Saturday plume, J. Geophys. Res.-Atmos., 117, D04204, https://doi.org/10.1029/2011JD017016, 2012.
Dey, S. and Di Girolamo, L.: A climatology of aerosol optical and
microphysical properties over the Indian subcontinent from 9 years
(2000–2008) of Multiangle Imaging Spectroradiometer (MISR) data, J. Geophys. Res.-Atmos., 115, D15204,
https://doi.org/10.1029/2009JD013395, 2010.
Di Girolamo, L., Bond, T., Bramer, D., Diner, D., Fettinger, F., Kahn, R.,
Martonchik, J., Ramana, M., Ramanathan, V., and Rasch, P.: Analysis of
Multi-angle Imaging SpectroRadiometer (MISR) aerosol optical 17 depths over
greater India during winter 2001–2004, Geophys. Res. Lett., 31, L23115,
https://doi.org/10.1029/2004GL021273, 2004.
Doglioni, G., Aquila, V., Das, S., Colarco, P. R., and Zardi, D.: Dynamical perturbation of the stratosphere by a pyrocumulonimbus injection of carbonaceous aerosols, Atmos. Chem. Phys., 22, 11049–11064, https://doi.org/10.5194/acp-22-11049-2022, 2022.
Dumka, U., Moorthy, K. K., Kumar, R., Hegde, P., Sagar, R., Pant, P., Singh,
N., and Babu, S. S.: Characteristics of aerosol black carbon mass
concentration over a high altitude location in the Central Himalayas from
multiyear measurements, Atmos. Res., 96, 510–521,
https://doi.org/10.1016/j.atmosres.2009.12.010, 2010.
Eswaran, K., Satheesh, S. K., and Srinivasan, J.: Multi-satellite retrieval of single scattering albedo using the OMI–MODIS algorithm, Atmos. Chem. Phys., 19, 3307–3324, https://doi.org/10.5194/acp-19-3307-2019, 2019.
Evan, A., Kossin, J., Chung, C., and Ramanathan, V.: Strengthening of
Arabian Sea tropical cyclones and the South Asian atmospheric brown cloud,
Nature, 479, 94–97, 2011.
Fadnavis, S., Kalita, G., Kumar, K. R., Gasparini, B., and Li, J.-L. F.: Potential impact of carbonaceous aerosol on the upper troposphere and lower stratosphere (UTLS) and precipitation during Asian summer monsoon in a global model simulation, Atmos. Chem. Phys., 17, 11637–11654, https://doi.org/10.5194/acp-17-11637-2017, 2017.
Fadnavis, S., Chavan, P., Joshi, A., Sonbawne, S. M., Acharya, A., Devara, P. C. S., Rap, A., Ploeger, F., and Müller, R.: Tropospheric warming over the northern Indian Ocean caused by South Asian anthropogenic aerosols: possible impact on the upper troposphere and lower stratosphere, Atmos. Chem. Phys., 22, 7179–7191, https://doi.org/10.5194/acp-22-7179-2022, 2022.
Forbes, M. S., Raison, R. J., and Skjemstad, J.: Formation, transformation
and transport of black carbon (charcoal) in terrestrial and aquatic
ecosystems, Sci. Total Environ., 370, 190–206,
https://doi.org/10.1016/j.scitotenv.2006.06.007, 2006.
Gautam, R., Hsu, N. C., Tsay, S. C., Lau, K. M., Holben, B., Bell, S., Smirnov, A., Li, C., Hansell, R., Ji, Q., Payra, S., Aryal, D., Kayastha, R., and Kim, K. M.: Accumulation of aerosols over the Indo-Gangetic plains and southern slopes of the Himalayas: distribution, properties and radiative effects during the 2009 pre-monsoon season, Atmos. Chem. Phys., 11, 12841–12863, https://doi.org/10.5194/acp-11-12841-2011, 2011.
Gelaro, R., McCarty, W., Suárez, M. J., Todling, R., Molod, A., Takacs,
L., Randles, C. A., Darmenov, A., Bosilovich, M. G., and Reichle, R.: The
modern-era retrospective analysis for research and applications, version 2
(MERRA-2), J. Climate, 30, 5419–5454, 2017.
Gogoi, M. M., Babu, S. S., Moorthy, K. K., Thakur, R. C., Chaubey, J. P.,
and Nair, V. S.: Aerosol black carbon over Svalbard regions of Arctic, Polar
Sci., 10, 60–70, 2016.
Gogoi, M. M., Babu, S. S., Arun, B. S., Krishna Moorthy, K., Ajay, A., Ajay, P., Suryavanshi, A., Borgohain, A., Guha, A., Shaikh, A., and Pathak, B.: Response of ambient BC concentration across the Indian region to the nationwide lockdown: Results from the ARFINET measurements of ISRO-GBP, Curr. Sci., 120, 341–351, https://doi.org/10.18520/cs/v120/i2/341-351, 2021.
Govardhan, G., Satheesh, S. K., Nanjundiah, R., Moorthy, K. K., and Babu, S. S.: Possible climatic implications of high-altitude black carbon emissions, Atmos. Chem. Phys., 17, 9623–9644, https://doi.org/10.5194/acp-17-9623-2017, 2017.
Grieshop, A. P., Reynolds, C. C., Kandlikar, M., and Dowlatabadi, H.: A
black-carbon mitigation wedge, Nat. Geosci., 2, 533–534,
http://https://doi.org/10.5194/acp-13-2423-2013, 2009.
Hansen, A., Rosen, H., and Novakov, T.: The aethalometer – an instrument for
the real-time measurement of optical absorption by aerosol particles,
Sci. Total Environ., 36, 191–196,
https://doi.org/10.1016/0048-9697(84)90265-1, 1984.
Hansen, A. D. A. and Novakov, T.: Real-Time Measurement of Aerosol Black
Carbon During the Carbonaceous Species Methods Comparison Study, Aerosol
Sci. Tech., 12, 194–199,
https://doi.org/10.1080/02786829008959339, 1990.
Haywood, J. and Shine, K.: Multi-spectral calculations of the direct
radiative forcing of tropospheric sulphate and soot aerosols using a column
model, Q. J. Roy. Meteor. Soc., 123, 1907,
https://doi.org/10.1002/qj.49712354307, 1997.
Hess, M., Koepke, P., and Schult, I.: Optical properties of aerosols and
clouds: The software package OPAC, B. Am. Meteorol.
Soc., 79, 831–844, https://doi.org/10.1175/1520-0477(1998)079{%}3C0831:OPOAAC{%}3E2.0.CO;2, 1998.
Jain, N., Bhatia, A., and Pathak, H.: Emission of air pollutants from CRB
in India, Aerosol Air Qual. Res., 14, 422–430, 2014.
Kahnert, M.: Variational data analysis of aerosol species in a regional CTM:
background error covariance constraint and aerosol optical observation
operators, Tellus B, 60, 753–770,
https://doi.org/10.1111/j.1600-0889.2008.00377.x, 2008.
Kala, N. K., Anand, N. S., Manoj, M. R., Pathak, H. S., Moorthy, K. K., and Satheesh, S. K.: Zonal variations in the vertical distribution of atmospheric aerosols over the Indian region and the consequent radiative effects, Atmos. Chem. Phys., 22, 6067–6085, https://doi.org/10.5194/acp-22-6067-2022, 2022.
Kalnay, E.: Atmospheric modeling, data assimilation and predictability,
Cambridge University Press, https://doi.org/10.1017/CBO9780511802270, 2003.
Kaskaoutis, D. G., Kumar, S., Sharma, D., Singh, R. P., Kharol, S.
K., and Sharma, M.: Effects of CRB on aerosol properties, plume characteristics,
and long-range transport over northern India, J. Geophys. Res.-Atmos., 119, 5424–5444, 2014.
Kaufman, Y. J., Koren, I., Remer, L. A., Rosenfeld, D., and Rudich, Y.: The effect of smoke, dust, and pollution aerosol on shallow cloud development over the Atlantic Ocean, P. Natl. Acad. Sci., 102, 11207–11212, 2005.
Keil, A., Wendisch, M., and Brüggemann, E.: Measured profiles of aerosol
particle absorption and its influence on clear-sky solar radiative forcing,
J. Geophys. Res.-Atmos., 106, 1237–1247,
https://doi.org/10.1029/2002JD002315, 2001.
Kharol, S. K. and Badarinath, K.: Impact of biomass burning on aerosol
properties over tropical urban region of Hyderabad, India, Geophys. Res. Lett., 33, L20801, https://doi.org/10.1029/2006GL026759, 2006.
Khaykin, S., Legras, B., Bucci, S., Sellitto, P., Isaksen, L., Tence, F.,
Bekki, S., Bourassa, A., Rieger, L., and Zawada, D.: The 2019/20 Australian
wildfires generated a persistent smoke-charged vortex rising up to 35 km altitude, Communications Earth Environment, 1, 22, https://doi.org/10.1038/s43247-020-00022-5, 2020.
Kompalli, S. K., Babu, S. S., Bharatan, L. N., and Moorthy, K. K.:
Spring-time enhancement in aerosol burden over a high-altitude location in
western trans-Himalaya: results from long-term observations, Curr.
Sci. India, 111, 117–131, 2016.
Kulkarni, J. R., Maheskumar, R. S., Morwal, S. B., Kumari, B. P., Konwar, M.,
Deshpande, C. G., Joshi, R. R., Bhalwankar, R. V., Pandithurai, G., Safai, P. D.,
and Narkhedkar, S. G.:. The cloud aerosol interaction and precipitation
enhancement experiment (CAIPEEX): overview and preliminary results, Curr.
Sci., 102, 413–425, 2012.
Kumar, R. R., Soni, V. K., and Jain, M. K.: Evaluation of spatial and
temporal heterogeneity of black carbon aerosol mass concentration over India
using three year measurements from IMD BC observation network, Sci. Total Environ., 723, 138060,
https://doi.org/10.1016/j.scitotenv.2020.138060, 2020.
Lau, K., Kim, M., and Kim, K.: Asian summer monsoon anomalies induced by
aerosol direct forcing: the role of the Tibetan Plateau, Clim. Dynam.,
26, 855–864, https://doi.org/10.1007/s00382-006-0114-z, 2006.
Lau, W. K. and Kim, K. M.: Recent trends in transport of surface
carbonaceous aerosols to the upper-troposphere-lower-stratosphere linked to
expansion of the Asian Summer Monsoon Anticyclone, J. Geophys. Res.-Atmos., 127, e2022JD036460, https://doi.org/10.1029/2022JD036460 2022.
Lawrence, M. G. and Lelieveld, J.: Atmospheric pollutant outflow from southern Asia: a review, Atmos. Chem. Phys., 10, 11017–11096, https://doi.org/10.5194/acp-10-11017-2010, 2010.
Legrand, M., Plana-Fattori, A., and N'doumé, C.: Satellite detection of
dust using the IR imagery of Meteosat: 1. Infrared difference dust index,
J. Geophys. Res.-Atmos., 106, 18251–18274, 2001.
Lewis, J. M., Lakshmivarahan, S., and Dhall, S.: Dynamic data assimilation:
a least squares approach, Cambridge University Press, Cambridge: Cambridge
University Press, ISBN 0521851556, 2006.
Lin, L., Xu, Y., Wang, Z., Diao, C., Dong, W., and Xie, S. P.: Changes in extreme rainfall over India and China attributed to regional aerosol‐cloud interaction during the late 20th century rapid industrialization, Geophys. Res. Lett., 45, 7857–7865, 2018.
Liou, K.-N.: An introduction to atmospheric radiation, Elsevier, ISBN 9780124514515, 2002.
Liu, Z., Liu, Q., Lin, H. C., Schwartz, C. S., Lee, Y. H., and Wang, T.:
Three-dimensional variational assimilation of MODIS aerosol optical depth:
Implementation and application to a dust storm over East Asia, J. Geophys. Res.-Atmos., 116, D23206,
https://doi.org/10.1029/2011JD016159, 2011.
Liu, Z., Kar, J., Zeng, S., Tackett, J., Vaughan, M., Avery, M., Pelon, J., Getzewich, B., Lee, K.-P., Magill, B., Omar, A., Lucker, P., Trepte, C., and Winker, D.: Discriminating between clouds and aerosols in the CALIOP version 4.1 data products, Atmos. Meas. Tech., 12, 703–734, https://doi.org/10.5194/amt-12-703-2019, 2019.
Maloney, C. M., Portmann, R. W., Ross, M. N., and Rosenlof, K. H.: The
climate and ozone impacts of black carbon emissions from global rocket
launches, J. Geophys. Res.-Atmos., 127, e2021JD036373, https://doi.org/10.1029/2021JD036373,
2022.
Manoj, M. R., Satheesh, S. K., Moorthy, K. K., Gogoi, M. M., and Babu, S.
S.: Decreasing trend in black carbon aerosols over the Indian region,
Geophys. Res. Lett., 46, 2903–2910, 2019.
Manoj, M. R., Satheesh, S. K., Moorthy, K. K., and Coe, H.: Vertical profiles of submicron aerosol single scattering albedo over the Indian region immediately before monsoon onset and during its development: research from the SWAAMI field campaign, Atmos. Chem. Phys., 20, 4031–4046, https://doi.org/10.5194/acp-20-4031-2020, 2020.
Masiello, C. A.: New directions in black carbon organic geochemistry, Mar.
Chem., 92, 201–213, http://https://doi.org/10.1016/j.marchem.2004.06.043, 2004.
Menon, S., Hansen, J., Nazarenko, L., and Luo, Y.: Climate effects of black
carbon aerosols in China and India, Science, 297, 2250–2253,
https://doi.org/10.1126/science.1075159, 2002.
Mitra, A., Gupta, M. D., Singh, S., and Krishnamurti, T.: Daily rainfall for
the Indian monsoon region from merged satellite and rain gauge values:
Large-scale analysis from real-time data, J. Hydrometeorol., 4,
769–781, https://doi.org/10.1175/1525-7541(2003)004<0769:DRFTIM>2.0.CO;2, 2003.
Mitra, A., Dasgupta, M., and Singh, S.: Daily Indian precipitation analyses
formed from a merge of rain-gauge with TRMM TMPA satellite derived rainfall
estimates, J. Meteorol. Soc. Jpn., 87, 265–279,
https://doi.org/10.2151/jmsj.87A.265, 2009.
Moorthy, K. K., Satheesh, S. K., and Babu, S. S.: ICARB: an integrated
campaign for aerosols, gases, and radiation budget over India, P. Soc. Photo-Opt. Ins., 6408, 127–133,
https://doi.org/10.1117/12.696110, 2006.
Moorthy, K. K., Satheesh, S. K., and Kotamarthi, V.: Evolution of aerosol
research in India and the RAWEX – GVAX: an overview, Curr. Sci., 111, 53–75,
2016.
Moorthy, K. K., Satheesh, S. K., and Murthy, B. V. K.: Investigations of
marine aerosols over the tropical Indian Ocean, J. Geophys. Res.-Atmos., 102, 18827–18842, 1997.
Moorthy, K. K., Babu, S. S., Sunilkumar, S., Gupta, P. K., and Gera, B.:
Altitude profiles of aerosol BC, derived from aircraft measurements over an
inland urban location in India, Geophys. Res. Lett., 31, L22103,
https://doi.org/10.1029/2004GL021336, 2004.
Moorthy, K. K., Nair, V. S., Babu, S. S., and Satheesh, S. K.: Spatial and
vertical heterogeneities in aerosol properties over oceanic regions around
India: Implications for radiative forcing, Q. J. Roy. Meteor. Soc., 135, 2131–2145,
https://doi.org/10.1002/qj.525, 2009.
Moorthy, K. K., Beegum, S. N., Babu, S. S., Smirnov, A., John, S. R., Kumar,
K. R., Narasimhulu, K., Dutt, C. B. S., and Nair, V. S.: Optical and
physical characteristics of Bay of Bengal aerosols during W-ICARB: Spatial
and vertical heterogeneities in the marine atmospheric boundary layer and in
the vertical column, J. Geophys. Res.-Atmos., 115, D24213,
https://doi.org/10.1029/2010JD014094, 2010.
Moorthy, K. K., Babu, S. S., Manoj, M. R., and Satheesh, S. K.: Buildup of
aerosols over the Indian Region, Geophys. Res. Lett., 40,
1011–1014, https://doi.org/10.1002/grl.50165, 2013.
Mor, V., Dhankhar, R., Attri, S., Soni, V., Sateesh, M., and Taneja, K.:
Assessment of aerosols optical properties and radiative forcing over an
Urban site in North-Western India, Environ. Technol., 38, 1232–1244,
2017.
Morcrette, J., Boucher, O., Jones, L., Salmond, D., and Bechtold, P.:
Aerosol analysis and forecast in the European Centre for Medium-Range
Weather Forecasts integrated forecast system: forward modelling, J.
Geophys. Res., 114, D06206, https://doi.org/10.1029/2008JD011235,
2009.
Nair, V. S., Babu, S. S., Gogoi, M. M., and Moorthy, K. K.: Large-scale
enhancement in aerosol absorption in the lower free troposphere over
continental India during spring, Geophys. Res. Lett., 43,
11453–11461, https://doi.org/10.1002/2016GL070669, 2016.
Negi, P. S., Pandey, C. P., and Singh, N.: Black carbon aerosols in the
ambient air of Gangotri Glacier valley of north-western Himalaya in
India, Atmos. Environ., 214, 116879, https://doi.org/10.1016/j.atmosenv.2019.116879, 2019.
Niu, T., Gong, S. L., Zhu, G. F., Liu, H. L., Hu, X. Q., Zhou, C. H., and Wang, Y. Q.: Data assimilation of dust aerosol observations for the CUACE/dust forecasting system, Atmos. Chem. Phys., 8, 3473–3482, https://doi.org/10.5194/acp-8-3473-2008, 2008.
Ogren, J. A. and Charlson, R. J.: Elemental carbon in the atmosphere: cycle and lifetime, Tellus B, 35, 241–254, 1983
Ohneiser, K., Ansmann, A., Witthuhn, J., Deneke, H., Chudnovsky, A., Walter, G., and Senf, F.: Self-lofting of wildfire smoke in the troposphere and stratosphere: simulations and space lidar observations, Atmos. Chem. Phys., 23, 2901–2925, https://doi.org/10.5194/acp-23-2901-2023, 2023.
Padmakumari, B., Maheskumar, R., Harikishan, G., Morwal, S., Prabha, T., and
Kulkarni, J.: In situ measurements of aerosol vertical and spatial
distributions over continental India during the major drought year 2009,
Atmos. Environ., 80, 107–121,
https://doi.org/10.1016/j.atmosenv.2013.07.064, 2013.
Pagowski, M. and Grell, G. A.: Experiments with the assimilation of fine
aerosols using an ensemble Kalman filter, J. Geophys. Res.-Atmos., 117, D21302, https://doi.org/10.1029/2012JD018333, 2012.
Pagowski, M., Grell, G., McKeen, S., Peckham, S., and Devenyi, D.:
Three-dimensional variational data assimilation of ozone and fine
particulate matter observations: some results using the Weather Research and
Forecasting – Chemistry model and Grid-point Statistical Interpolation,
Q. J. Roy. Meteor. Soc., 136, 2013–2024,
https://doi.org/10.1002/qj.700, 2010.
Pathak, H. S., Satheesh, S. K., Nanjundiah, R. S., Moorthy, K. K., Lakshmivarahan, S., and Babu, S. N. S.: Assessment of regional aerosol radiative effects under the SWAAMI campaign – Part 1: Quality-enhanced estimation of columnar aerosol extinction and absorption over the Indian subcontinent, Atmos. Chem. Phys., 19, 11865–11886, https://doi.org/10.5194/acp-19-11865-2019, 2019.
Penner, J. E., Dong, X. Q., and Chen, Y.: Observational evidence of a
change in radiative forcing due to the indirect aerosol effect, Nature,
427, 231–234, https://doi.org/10.1038/nature02234, 2004.
Prasad, A. K., Singh, R. P., and Kafatos, M.: Influence of coal based
thermal power plants on aerosol optical properties in the Indo-Gangetic
basin, Geophys. Res. Lett., 33, L05805, https://doi.org/10.1029/2005GL023801,
2006.
Pusechel, R., Blake, D., Snetsinger, K., Hansen, A., Verma, S., and Kato,
K.: Black carbon (soot) aerosol in the lower stratosphere and upper
troposphere, Geophys. Res. Lett., 19, 1659–1662, 1992.
Rahul, P., Bhawar, R., Ayantika, D., Panicker, A., Safai, P.,
Tharaprabhakaran, V., Padmakumari, B., and Raju, M.: Double blanket effect
caused by two layers of black carbon aerosols escalates warming in the
Brahmaputra River Valley, Sci. Rep., 4, 3670,
https://doi.org/10.1038/srep03670, 2014.
Ratnam, M. V., Prasad, P., Raj, S. A., Raman, M. R., and Basha, G.: Changing
patterns in aerosol vertical distribution over South and East Asia,
Sci. Rep., 11, 308, https://doi.org/10.1038/s41598-020-79361-4, 2021.
Reddy, M. S. and Venkataraman, C.: Inventory of aerosol and sulphur dioxide
emissions from India: I – Fossil fuel combustion, Atmos. Environ.,
36, 677–697, https://doi.org/10.1016/S1352-2310(01)00463-0, 2002.
Rehman, I. H., Ahmed, T., Praveen, P. S., Kar, A., and Ramanathan, V.: Black carbon emissions from biomass and fossil fuels in rural India, Atmos. Chem. Phys., 11, 7289–7299, https://doi.org/10.5194/acp-11-7289-2011, 2011.
Ricchiazzi, P., Yang, S., Gautier, C., and Sowle, D.: SBDART: A research and
teaching software tool for plane- parallel radiative transfer in the Earth's
atmosphere, B. Am. Meteorol. Soc., 79, 2101–2114,
1998.
Rosenfeld, D.: Suppression of rain and snow by urban and industrial air
pollution, Science, 287, 1793–1796,
https://doi.org/10.1126/science.287.5459.1793, 2000.
Rouïl, L., Honore, C., Vautard, R., Beekmann, M., Bessagnet, B.,
Malherbe, L., Meleux, F., Dufour, A., Elichegaray, C., and Flaud, J.:
PREV'AIR An Operational Forecasting and Mapping System for Air Quality in
Europe, B. Am. Meteorol. Soc., 90, 73–83,
https://doi.org/10.1175/2008BAMS2390.1, 2009.
Safai, P., Raju, M., Maheshkumar, R., Kulkarni, J., Rao, P., and Devara, P.:
Vertical profiles of black carbon aerosols over the urban locations in South
India, Sci. Total Environ., 431, 323–331,
https://doi.org/10.1016/j.scitotenv.2012.05.058, 2012.
Saide, P. E., Carmichael, G. R., Liu, Z., Schwartz, C. S., Lin, H. C., da Silva, A. M., and Hyer, E.: Aerosol optical depth assimilation for a size-resolved sectional model: impacts of observationally constrained, multi-wavelength and fine mode retrievals on regional scale analyses and forecasts, Atmos. Chem. Phys., 13, 10425–10444, https://doi.org/10.5194/acp-13-10425-2013, 2013.
Samset, B. H. and Myhre, G.: Vertical dependence of black carbon, sulphate
and biomass burning aerosol radiative forcing, Geophys. Res. Lett.,
38, L24802, https://doi.org/10.1029/2011GL049697, 2011.
Samset, B. H., Lund, M. T., Bollasina, M., Myhre, G., and Wilcox, L.:
Emerging Asian aerosol patterns, Nat. Geosci., 12, 582–584, 2019.
Satheesh, S. K.: Letter to the Editor
Aerosol radiative forcing over land: effect of surface and cloud reflection, Ann. Geophys., 20, 2105–2109, https://doi.org/10.5194/angeo-20-2105-2002, 2002.
Satheesh, S. K., Moorthy, K. K., Babu, S. S., Vinoj, V., and Dutt, C.:
Climate implications of large warming by elevated aerosol over India,
Geophys. Res. Lett., 35, L19809, https://doi.org/10.1029/2008GL034944,
2008.
Satheesh, S. K., Moorthy, K. K., Babu, S. S., Vinoj, V., Nair, V. S.,
Naseema Beegum, S., Dutt, C. B. S., Alappattu, D. P., and Kunhikrishnan, P.:
Vertical structure and horizontal gradients of aerosol extinction
coefficients over coastal India inferred from airborne lidar measurements
during the Integrated Campaign for Aerosol, Gases and Radiation Budget
(ICARB) field campaign, J. Geophys. Res.-Atmos., 114, D05204, https://doi.org/10.1029/2008JD011033,
2009.
Satheesh, S. K., Vinoj, V., and Moorthy, K. K.: Assessment of aerosol
radiative impact over oceanic regions adjacent to Indian subcontinent using
multisatellite analysis, Adv. Meteorol., 2010, 139186,
https://doi.org/10.1155/2010/139186, 2010.
Satheesh, S. K., Moorthy, K. K., and Srinivasan, J.: New Directions:
Elevated layers of anthropogenic aerosols aggravate stratospheric ozone
loss?, Atmos. Environ., 79, 879–882, 2013.
Schmidt, M. W. and Noack, A. G.: Black carbon in soils and sediments:
analysis, distribution, implications, and current challenges, Global
Biogeochem. Cy., 14, 777–793, https://doi.org/10.1029/1999GB001208,
2000.
Schutgens, N. A. J., Miyoshi, T., Takemura, T., and Nakajima, T.: Applying an ensemble Kalman filter to the assimilation of AERONET observations in a global aerosol transport model, Atmos. Chem. Phys., 10, 2561–2576, https://doi.org/10.5194/acp-10-2561-2010, 2010.
Schwartz, C. S., Liu, Z., Lin, H. C., and McKeen, S. A.: Simultaneous
three-dimensional variational assimilation of surface fine particulate
matter and MODIS aerosol optical depth, J. Geophys. Res.-Atmos., 117, D13202, https://doi.org/10.1029/2011JD017383, 2012.
Schwartz, C. S., Liu, Z., Lin, H. C., and Cetola, J. D.: Assimilating
aerosol observations with a “hybrid” variational-ensemble data
assimilation system, J. Geophys. Res.-Atmos., 119,
4043–4069, https://doi.org/10.1002/2013JD020937, 2014.
Shindell, D., Kuylenstierna, J., Vignati, E., Van Dingenen, R., Amann, M.,
Klimont, Z., Anenberg, S., Muller, N., Janssens-Maenhout, G., Raes, F.,
Schwartz, J., Faluvegi, G., Pozzoli, L., Kupiainen, K.,
Höglund-Isaksson, L., Emberson, L., Streets, D., Ramanathan, V., Hicks,
K., and Fowler, D.: Simultaneously Mitigating Near-Term Climate Change and
Improving Human Health and Food Security, Science, 335,
183–189, https://doi.org/10.1126/science.1210026, 2012.
Sheoran, R., Dumka, U. C., Hyvärinen, A. P., Sharma, V. P., Tiwari, R. K., Lihavainen, H., Virkkula, A., and Hooda, R. K.: Assessment of carbonaceous
aerosols at Mukteshwar: A high-altitude (∼ 2200 m amsl)
background site in the foothills of the Central Himalayas, Sci.
Total Environ., 866, 161334, https://doi.org/10.1016/j.scitotenv.2022.161334, 2023.
Sicard, M., Granados-Muñoz, M. J., Alados-Arboledas, L., Barragán,
R., Bedoya-Velásquez, A. E., Benavent-Oltra, J. A., Bortoli, D.,
Comerón, A., Córdoba-Jabonero, C., and Costa, M. J.: Ground/space,
passive/active remote sensing observations coupled with particle dispersion
modelling to understand the inter-continental transport of wildfire smoke
plumes, Remote Sens. Environ., 232, 111294, https://doi.org/10.1016/j.rse.2019.111294, 2019.
Singh, A., Mahata, K. S., Rupakheti, M., Junkermann, W., Panday, A. K., and Lawrence, M. G.: An overview of airborne measurement in Nepal – Part 1: Vertical profile of aerosol size, number, spectral absorption, and meteorology, Atmos. Chem. Phys., 19, 245–258, https://doi.org/10.5194/acp-19-245-2019, 2019.
Singh, P., Sarawade, P., and Adhikary, B.: Transport of black carbon from
planetary boundary layer to free troposphere during the summer monsoon over
South Asia, Atmos. Res., 235, 104761, https://doi.org/10.1016/j.atmosres.2019.104761, 2020.
Singh, R., Singh, C., Ojha, S. P., Kumar, A. S., and Kumar, A. K.:
Development of an improved aerosol product over the Indian subcontinent:
Blending model, satellite, and ground-based estimates, J. Geophys. Res.-Atmos., 122, 367–390,
https://doi.org/10.1002/2016JD025335, 2017.
Singh, S. K., Radhakrishnan, S. R., Jaswant, Mishra, S. K., Shukla, D. K.,
Ranjan, A., and Sharma, C.: Study of variation of aerosol optical
properties over a high-altitude station in Indian Western Himalayan region,
palampur using raman lidar system, J. Atmos. Chem., 79,
117–139, 2022.
Srivastava, A., Yadav, V., Pathak, V., Singh, S., Tiwari, S., Bisht, D., and
Goloub, P.: Variability in radiative properties of major aerosol types: A
year-long study over Delhi – An urban station in Indo-Gangetic Basin,
Sci. Total Environ., 473, 659–666,
https://doi.org/10.1016/j.scitotenv.2013.12.064, 2014.
Stamnes, K., Tsay, S.-C., Wiscombe, W., and Jayaweera, K.: Numerically
stable algorithm for discrete-ordinate-method radiative transfer in multiple
scattering and emitting layered media, Appl. Opt., 27, 2502–2509, 1988.
Thakur, R. C., Arun, B. S., Gogoi, M. M., Thamban, M., Thayyen, R. J.,
Redkar, B. L., and Babu, S. S.: Multi-layer distribution of Black
Carbon and inorganic ions in the snowpacks of western Himalayas and snow
albedo forcing, Atmos. Environ., 261, 118564, https://doi.org/10.1016/j.atmosenv.2021.118564, 2021.
Torres, O., Bhartia, P., Sinyuk, A., Welton, E., and Holben, B.: Total Ozone
Mapping Spectrometer measurements of aerosol absorption from space:
Comparison to SAFARI 2000 ground-based observations, J. Geophys. Res.-Atmos., 110, D10S18, https://doi.org/10.1029/2004JD004611, 2005.
Torres, O., Bhartia, P. K., Taha, G., Jethva, H., Das, S., Colarco, P.,
Krotkov, N., Omar, A., and Ahn, C.: Stratospheric injection of massive smoke
plume from Canadian boreal fires in 2017 as seen by DSCOVR-EPIC, CALIOP, and
OMPS-LP observations, J. Geophys. Res.-Atmos., 125,
e2020JD032579, https://doi.org/10.1029/2020JD032579, 2020.
Vaishya, A., Babu, S. N. S., Jayachandran, V., Gogoi, M. M., Lakshmi, N. B., Moorthy, K. K., and Satheesh, S. K.: Large contrast in the vertical distribution of aerosol optical properties and radiative effects across the Indo-Gangetic Plain during the SWAAMI–RAWEX campaign, Atmos. Chem. Phys., 18, 17669–17685, https://doi.org/10.5194/acp-18-17669-2018, 2018.
Venkataraman, C., Habib, G., Kadamba, D., Shrivastava, M., Leon, J. F.,
Crouzille, B., Boucher, O., and Streets, D.: Emissions from open biomass
burning in India: Integrating the inventory approach with high-resolution
Moderate Resolution Imaging Spectroradiometer (MODIS) active-fire and land
cover data, Global Biogeochem. Cy., 20, GB2013,
https://doi.org/10.1029/2005GB002547, 2006.
Wang, C.: Impact of direct radiative forcing of black carbon aerosols on
tropical convective precipitation, Geophys. Res. Lett., 34, L05709,
https://doi.org/10.1029/2006GL028416, 2007.
Williams, A. I., Stier, P., Dagan, G., and Watson-Parris, D.: Strong control
of effective radiative forcing by the spatial pattern of absorbing aerosol,
Nat. Clim. Change, 12, 735–742, 2022.
Yadav, R., Sahu, L. K., Jaaffrey, S. N. A., and Beig, G.: Temporal variation
of particulate matter (PM) and potential sources at an urban site of Udaipur
in western India, Aerosol Air Qual. Res., 14, 1613–1629, https://doi.org/10.4209/aaqr.2013.10.0310, 2014.
Young, S. A., Vaughan, M. A., Garnier, A., Tackett, J. L., Lambeth, J. D., and Powell, K. A.: Extinction and optical depth retrievals for CALIPSO's Version 4 data release, Atmos. Meas. Tech., 11, 5701–5727, https://doi.org/10.5194/amt-11-5701-2018, 2018.
Zanatta, M., Mertes, S., Jourdan, O., Dupuy, R., Järvinen, E., Schnaiter, M., Eppers, O., Schneider, J., Jurányi, Z., and Herber, A.: Airborne investigation of black carbon interaction with low-level, persistent, mixed-phase clouds in the Arctic summer, Atmos. Chem. Phys., 23, 7955–7973, https://doi.org/10.5194/acp-23-7955-2023, 2023.
Zarzycki, C. M. and Bond, T. C.: How much can the vertical distribution of
black carbon affect its global direct radiative forcing?, Geophys. Res. Lett., 37, L20807, https://doi.org/10.1029/2010GL044555, 2010.
Zhang, J., Reid, J. S., Westphal, D. L., Baker, N. L., and Hyer, E. J.: A
system for operational aerosol optical depth data assimilation over global
oceans, J. Geophys. Res.-Atmos., 113, D10208,
https://doi.org/10.1029/2007JD009065, 2008.
Short summary
We present a 3D data set of aerosol black carbon over the Indian mainland by assimilating data from surface, aircraft, and balloon measurements, along with multi-satellite observations. Radiative transfer computations using height-resolved aerosol absorption show higher warming in the free troposphere and will have large implications for atmospheric stability. This data set will help reduce the uncertainty in aerosol radiative effects in climate model simulations over the Indian region.
We present a 3D data set of aerosol black carbon over the Indian mainland by assimilating data...
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