Articles | Volume 22, issue 12
https://doi.org/10.5194/acp-22-8321-2022
© Author(s) 2022. 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-22-8321-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
28 Jun 2022
Research article |
| 28 Jun 2022
| 28 Jun 2022
Temporal and vertical distributions of the occurrence of cirrus clouds over a coastal station in the Indian monsoon region
Saleem Ali
Atmospheric Observations and Modelling Laboratory, Research
Institute/Department of Physics, SRM Institute of Science and Technology,
Kattankulathur, Tamil Nadu, India
Sanjay Kumar Mehta
CORRESPONDING AUTHOR
Atmospheric Observations and Modelling Laboratory, Research
Institute/Department of Physics, SRM Institute of Science and Technology,
Kattankulathur, Tamil Nadu, India
Aravindhavel Ananthavel
Atmospheric Observations and Modelling Laboratory, Research
Institute/Department of Physics, SRM Institute of Science and Technology,
Kattankulathur, Tamil Nadu, India
Indian Institute of Tropical Meteorology, Pune, India
Tondapu Venkata Ramesh Reddy
Atmospheric Observations and Modelling Laboratory, Research
Institute/Department of Physics, SRM Institute of Science and Technology,
Kattankulathur, Tamil Nadu, India
Department of Civil Engineering, Indian Institute of Technology
Kanpur, Kanpur, India
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M. Fujiwara, T. Hibino, S. K. Mehta, L. Gray, D. Mitchell, and J. Anstey
Atmos. Chem. Phys., 15, 13507–13518, https://doi.org/10.5194/acp-15-13507-2015, https://doi.org/10.5194/acp-15-13507-2015, 2015
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This paper evaluates the temperature response in the troposphere and the stratosphere to the three major volcanic eruptions between the 1960s and the 1990s by comparing nine reanalysis data sets. It was found that the volcanic temperature response patterns differ among the major eruptions and that in general, more recent reanalysis data sets show a more consistent response pattern.
Related subject area
Subject: Clouds and Precipitation | Research Activity: Field Measurements | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
Influence of air mass origin on microphysical properties of low-level clouds in a subarctic environment
Sensitivity of convectively driven tropical tropopause cirrus properties to ice habits in high-resolution simulations
Upper-tropospheric slightly ice-subsaturated regions: frequency of occurrence and statistical evidence for the appearance of contrail cirrus
Examination of aerosol indirect effects during cirrus cloud evolution
In situ microphysics observations of intense pyroconvection from a large wildfire
Conditions favorable for secondary ice production in Arctic mixed-phase clouds
Interaction between cloud–radiation, atmospheric dynamics and thermodynamics based on observational data from GoAmazon 2014/15 and a cloud-resolving model
Snowfall in Northern Finland derives mostly from ice clouds
Observation of secondary ice production in clouds at low temperatures
In situ and satellite-based estimates of cloud properties and aerosol–cloud interactions over the southeast Atlantic Ocean
Ice fog observed at cirrus temperatures at Dome C, Antarctic Plateau
Life cycle of stratocumulus clouds over 1 year at the coast of the Atacama Desert
Experimental study on the evolution of droplet size distribution during the fog life cycle
Significant continental source of ice-nucleating particles at the tip of Chile's southernmost Patagonia region
Retrieving ice-nucleating particle concentration and ice multiplication factors using active remote sensing validated by in situ observations
Aircraft observations of gravity wave activity and turbulence in the tropical tropopause layer: prevalence, influence on cirrus and comparison with global-storm resolving models
Continental thunderstorm ground enhancement observed at an exceptionally low altitude
Ice-nucleating particles from multiple aerosol sources in the urban environment of Beijing under mixed-phase cloud conditions
In situ observation of riming in mixed-phase clouds using the PHIPS probe
Measurement report: Introduction to the HyICE-2018 campaign for measurements of ice-nucleating particles and instrument inter-comparison in the Hyytiälä boreal forest
North Atlantic Ocean SST-gradient-driven variations in aerosol and cloud evolution along Lagrangian cold-air outbreak trajectories
Factors affecting precipitation formation and precipitation susceptibility of marine stratocumulus with variable above- and below-cloud aerosol concentrations over the Southeast Atlantic
An assessment of macrophysical and microphysical cloud properties driving radiative forcing of shallow trade-wind clouds
High concentrations of ice crystals in upper-tropospheric tropical clouds: is there a link to biomass and fossil fuel combustion?
Atmospheric rivers and associated precipitation patterns during the ACLOUD and PASCAL campaigns near Svalbard (May–June 2017): case studies using observations, reanalyses, and a regional climate model
Mass of different snow crystal shapes derived from fall speed measurements
Measurement report: Impact of African aerosol particles on cloud evolution in a tropical montane cloud forest in the Caribbean
Annual exposure to polycyclic aromatic hydrocarbons in urban environments linked to wintertime wood-burning episodes
Reduced ice number concentrations in contrails from low-aromatic biofuel blends
Distinct impacts on precipitation by aerosol radiative effect over three different megacity regions of eastern China
Estimation of the terms acting on local 1 h surface temperature variations in Paris region: the specific contribution of clouds
Contrasting characteristics of open- and closed-cellular stratocumulus cloud in the eastern North Atlantic
Mass and density of individual frozen hydrometeors
Linear relationship between effective radius and precipitation water content near the top of convective clouds: measurement results from ACRIDICON–CHUVA campaign
Supercooled liquid water and secondary ice production in Kelvin–Helmholtz instability as revealed by radar Doppler spectra observations
Morning boundary layer conditions for shallow to deep convective cloud evolution during the dry season in the central Amazon
Analysis of aerosol–cloud interactions and their implications for precipitation formation using aircraft observations over the United Arab Emirates
Impact of wind pattern and complex topography on snow microphysics during International Collaborative Experiment for PyeongChang 2018 Olympic and Paralympic winter games (ICE-POP 2018)
Evaluation of simulated cloud liquid water in low clouds over the Beaufort Sea in the Arctic System Reanalysis using ARISE airborne in situ observations
Comprehensive quantification of height dependence of entrainment mixing between stratiform cloud top and environment
Sunlight-absorbing aerosol amplifies the seasonal cycle in low-cloud fraction over the southeast Atlantic
Coupled and decoupled stratocumulus-topped boundary layers: turbulence properties
Shape dependence of snow crystal fall speed
Captured cirrus ice particles in high definition
What drives daily precipitation over the central Amazon? Differences observed between wet and dry seasons
Microphysical investigation of the seeder and feeder region of an Alpine mixed-phase cloud
Case study of a humidity layer above Arctic stratocumulus and potential turbulent coupling with the cloud top
Joint cloud water path and rainwater path retrievals from airborne ORACLES observations
Lagrangian matches between observations from aircraft, lidar and radar in a warm conveyor belt crossing orography
Influence of low-level blocking and turbulence on the microphysics of a mixed-phase cloud in an inner-Alpine valley
Konstantinos Matthaios Doulgeris, Ville Vakkari, Ewan J. O'Connor, Veli-Matti Kerminen, Heikki Lihavainen, and David Brus
Atmos. Chem. Phys., 23, 2483–2498, https://doi.org/10.5194/acp-23-2483-2023, https://doi.org/10.5194/acp-23-2483-2023, 2023
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We investigated how different long-range-transported air masses can affect the microphysical properties of low-level clouds in a clean subarctic environment. A connection was revealed. Higher values of cloud droplet number concentrations were related to continental air masses, whereas the lowest values of number concentrations were related to marine air masses. These were characterized by larger cloud droplets. Clouds in all regions were sensitive to increases in cloud number concentration.
Fayçal Lamraoui, Martina Krämer, Armin Afchine, Adam B. Sokol, Sergey Khaykin, Apoorva Pandey, and Zhiming Kuang
Atmos. Chem. Phys., 23, 2393–2419, https://doi.org/10.5194/acp-23-2393-2023, https://doi.org/10.5194/acp-23-2393-2023, 2023
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Cirrus in the tropical tropopause layer (TTL) can play a key role in vertical transport. We investigate the role of different cloud regimes and the associated ice habits in regulating the properties of the TTL. We use high-resolution numerical experiments at the scales of large-eddy simulations (LESs) and aircraft measurements. We found that LES-scale parameterizations that predict ice shape are crucial for an accurate representation of TTL cirrus and thus the associated (de)hydration process.
Yun Li, Christoph Mahnke, Susanne Rohs, Ulrich Bundke, Nicole Spelten, Georgios Dekoutsidis, Silke Groß, Christiane Voigt, Ulrich Schumann, Andreas Petzold, and Martina Krämer
Atmos. Chem. Phys., 23, 2251–2271, https://doi.org/10.5194/acp-23-2251-2023, https://doi.org/10.5194/acp-23-2251-2023, 2023
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The radiative effect of aviation-induced cirrus is closely related to ambient conditions and its microphysical properties. Our study investigated the occurrence of contrail and natural cirrus measured above central Europe in spring 2014. It finds that contrail cirrus appears frequently in the pressure range 200 to 245 hPa and occurs more often in slightly ice-subsaturated environments than expected. Avoiding slightly ice-subsaturated regions by aviation might help mitigate contrail cirrus.
Flor Vanessa Maciel, Minghui Diao, and Ryan Patnaude
Atmos. Chem. Phys., 23, 1103–1129, https://doi.org/10.5194/acp-23-1103-2023, https://doi.org/10.5194/acp-23-1103-2023, 2023
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Aerosol indirect effects on cirrus clouds are investigated during cirrus evolution, using global-scale in situ observations and climate model simulations. As cirrus evolves, the mechanisms to form ice crystals also change with time. Both small and large aerosols are found to affect cirrus properties. Southern Hemisphere cirrus appears to be more sensitive to additional aerosols. The climate model underestimates ice crystal mass, likely due to biases of relative humidity and vertical velocity.
David E. Kingsmill, Jeffrey R. French, and Neil P. Lareau
Atmos. Chem. Phys., 23, 1–21, https://doi.org/10.5194/acp-23-1-2023, https://doi.org/10.5194/acp-23-1-2023, 2023
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This study uses in situ aircraft measurements to characterize the size and shape distributions of 10 µm to 6 mm diameter particles observed during six penetrations of wildfire-induced pyroconvection. Particles sampled in one penetration of a smoke plume are most likely pyrometeors composed of ash. The other penetrations are through pyrocumulus clouds where particle composition is most likely a combination of hydrometeors (ice particles) and pyrometeors (ash).
Julie Thérèse Pasquier, Jan Henneberger, Fabiola Ramelli, Annika Lauber, Robert Oscar David, Jörg Wieder, Tim Carlsen, Rosa Gierens, Marion Maturilli, and Ulrike Lohmann
Atmos. Chem. Phys., 22, 15579–15601, https://doi.org/10.5194/acp-22-15579-2022, https://doi.org/10.5194/acp-22-15579-2022, 2022
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It is important to understand how ice crystals and cloud droplets form in clouds, as their concentrations and sizes determine the exact radiative properties of the clouds. Normally, ice crystals form from aerosols, but we found evidence for the formation of additional ice crystals from the original ones over a large temperature range within Arctic clouds. In particular, additional ice crystals were formed during collisions of several ice crystals or during the freezing of large cloud droplets.
Layrson J. M. Gonçalves, Simone M. S. C. Coelho, Paulo Y. Kubota, and Dayana C. Souza
Atmos. Chem. Phys., 22, 15509–15526, https://doi.org/10.5194/acp-22-15509-2022, https://doi.org/10.5194/acp-22-15509-2022, 2022
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This research aims to study the environmental conditions that are favorable and not favorable to cloud formation, in this case specifically for the Amazon region. The results found in this research will be used to improve the representation of clouds in numerical models that are used in weather and climate prediction. In general, it is expected that with better knowledge regarding the cloud–radiation interaction, it is possible to make a better forecast of weather and climate.
Claudia Mignani, Lukas Zimmermann, Rigel Kivi, Alexis Berne, and Franz Conen
Atmos. Chem. Phys., 22, 13551–13568, https://doi.org/10.5194/acp-22-13551-2022, https://doi.org/10.5194/acp-22-13551-2022, 2022
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We determined over the course of 8 winter months the phase of clouds associated with snowfall in Northern Finland using radiosondes and observations of ice particle habits at ground level. We found that precipitating clouds were extending from near ground to at least 2.7 km altitude and approximately three-quarters of them were likely glaciated. Possible moisture sources and ice formation processes are discussed.
Alexei Korolev, Paul J. DeMott, Ivan Heckman, Mengistu Wolde, Earle Williams, David J. Smalley, and Michael F. Donovan
Atmos. Chem. Phys., 22, 13103–13113, https://doi.org/10.5194/acp-22-13103-2022, https://doi.org/10.5194/acp-22-13103-2022, 2022
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The present study provides the first explicit in situ observation of secondary ice production at temperatures as low as −27 °C, which is well outside the range of the Hallett–Mossop process (−3 to −8 °C). This observation expands our knowledge of the temperature range of initiation of secondary ice in clouds. The obtained results are intended to stimulate laboratory and theoretical studies to develop physically based parameterizations for weather prediction and climate models.
Siddhant Gupta, Greg M. McFarquhar, Joseph R. O'Brien, Michael R. Poellot, David J. Delene, Ian Chang, Lan Gao, Feng Xu, and Jens Redemann
Atmos. Chem. Phys., 22, 12923–12943, https://doi.org/10.5194/acp-22-12923-2022, https://doi.org/10.5194/acp-22-12923-2022, 2022
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The ability of NASA’s Terra and Aqua satellites to retrieve cloud properties and estimate the changes in cloud properties due to aerosol–cloud interactions (ACI) was examined. There was good agreement between satellite retrievals and in situ measurements over the southeast Atlantic Ocean. This suggests that, combined with information on aerosol properties, satellite retrievals of cloud properties can be used to study ACI over larger domains and longer timescales in the absence of in situ data.
Étienne Vignon, Lea Raillard, Christophe Genthon, Massimo Del Guasta, Andrew J. Heymsfield, Jean-Baptiste Madeleine, and Alexis Berne
Atmos. Chem. Phys., 22, 12857–12872, https://doi.org/10.5194/acp-22-12857-2022, https://doi.org/10.5194/acp-22-12857-2022, 2022
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The near-surface atmosphere over the Antarctic Plateau is cold and pristine and resembles to a certain extent the high troposphere where cirrus clouds form. In this study, we use innovative humidity measurements at Concordia Station to study the formation of ice fogs at temperatures <−40°C. We provide observational evidence that ice fogs can form through the homogeneous freezing of solution aerosols, a common nucleation pathway for cirrus clouds.
Jan H. Schween, Camilo del Rio, Juan-Luis García, Pablo Osses, Sarah Westbrook, and Ulrich Löhnert
Atmos. Chem. Phys., 22, 12241–12267, https://doi.org/10.5194/acp-22-12241-2022, https://doi.org/10.5194/acp-22-12241-2022, 2022
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Marine stratocumulus clouds of the eastern Pacific play an essential role in the Earth's climate. These clouds form the major source of water to parts of the extreme dry Atacama Desert at the northern coast of Chile. For the first time these clouds are observed over a whole year with three remote sensing instruments. It is shown how these clouds are influenced by the land–sea wind system and the distribution of ocean temperatures.
Marie Mazoyer, Frédéric Burnet, and Cyrielle Denjean
Atmos. Chem. Phys., 22, 11305–11321, https://doi.org/10.5194/acp-22-11305-2022, https://doi.org/10.5194/acp-22-11305-2022, 2022
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The evolution of the droplet size distribution during the fog life cycle remains poorly understood and progress is required to reduce the uncertainty of fog forecasts. To gain insights into the physical processes driving the microphysics, intensive field campaigns were conducted during three winters at the SIRTA site in the south of Paris. This study analyzed the variations in fog microphysical properties and their potential interactions at the different evolutionary stages of the fog events.
Xianda Gong, Martin Radenz, Heike Wex, Patric Seifert, Farnoush Ataei, Silvia Henning, Holger Baars, Boris Barja, Albert Ansmann, and Frank Stratmann
Atmos. Chem. Phys., 22, 10505–10525, https://doi.org/10.5194/acp-22-10505-2022, https://doi.org/10.5194/acp-22-10505-2022, 2022
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The sources of ice-nucleating particles (INPs) are poorly understood in the Southern Hemisphere (SH). We studied INPs in the boundary layer in the southern Patagonia region. No seasonal cycle of INP concentrations was observed. The majority of INPs are biogenic particles, likely from local continental sources. The INP concentrations are higher when strong precipitation occurs. While previous studies focused on marine INP sources in SH, we point out the importance of continental sources of INPs.
Jörg Wieder, Nikola Ihn, Claudia Mignani, Moritz Haarig, Johannes Bühl, Patric Seifert, Ronny Engelmann, Fabiola Ramelli, Zamin A. Kanji, Ulrike Lohmann, and Jan Henneberger
Atmos. Chem. Phys., 22, 9767–9797, https://doi.org/10.5194/acp-22-9767-2022, https://doi.org/10.5194/acp-22-9767-2022, 2022
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Ice formation and its evolution in mixed-phase clouds are still uncertain. We evaluate the lidar retrieval of ice-nucleating particle concentration in dust-dominated and continental air masses over the Swiss Alps with in situ observations. A calibration factor to improve the retrieval from continental air masses is proposed. Ice multiplication factors are obtained with a new method utilizing remote sensing. Our results indicate that secondary ice production occurs at temperatures down to −30 °C.
Rachel Atlas and Christopher Bretherton
Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2022-491, https://doi.org/10.5194/acp-2022-491, 2022
Revised manuscript accepted for ACP
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The tropical tropopause layer exists between the troposphere and the stratosphere, in the tropics. Very thin cirrus clouds cool Earth's surface by scrubbing water vapor (a greenhouse gas) out of air parcels as they ascend through the tropical tropopause layer on their way to the stratosphere. We show observational evidence from aircraft that small-scale (< 100 km) turbulence and gravity waves increase the amount of ice in these clouds and allow them to remove more water vapor from the air.
Ivana Kolmašová, Ondřej Santolík, Jakub Šlegl, Jana Popová, Zbyněk Sokol, Petr Zacharov, Ondřej Ploc, Gerhard Diendorfer, Ronald Langer, Radek Lán, and Igor Strhárský
Atmos. Chem. Phys., 22, 7959–7973, https://doi.org/10.5194/acp-22-7959-2022, https://doi.org/10.5194/acp-22-7959-2022, 2022
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Gamma ray radiation related to thunderstorms was previously observed at the high-altitude mountain observatories or on the western coast of Japan, usually being terminated by lightning discharges. We show unusual observations of gamma rays at an altitude below 1000 m, coinciding with peculiar rapid variations in the vertical electric field, which are linked to inverted intracloud lightning discharges. This indicates that a strong, lower positive-charge region was present inside the thundercloud.
Cuiqi Zhang, Zhijun Wu, Jingchuan Chen, Jie Chen, Lizi Tang, Wenfei Zhu, Xiangyu Pei, Shiyi Chen, Ping Tian, Song Guo, Limin Zeng, Min Hu, and Zamin A. Kanji
Atmos. Chem. Phys., 22, 7539–7556, https://doi.org/10.5194/acp-22-7539-2022, https://doi.org/10.5194/acp-22-7539-2022, 2022
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The immersion ice nucleation effectiveness of aerosols from multiple sources in the urban environment remains elusive. In this study, we demonstrate that the immersion ice-nucleating particle (INP) concentration increased dramatically during a dust event in an urban atmosphere. Pollutant aerosols, including inorganic salts formed through secondary transformation (SIA) and black carbon (BC), might not act as effective INPs under mixed-phase cloud conditions.
Fritz Waitz, Martin Schnaiter, Thomas Leisner, and Emma Järvinen
Atmos. Chem. Phys., 22, 7087–7103, https://doi.org/10.5194/acp-22-7087-2022, https://doi.org/10.5194/acp-22-7087-2022, 2022
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Riming, i.e., the accretion of small droplets on the surface of ice particles via collision, is one of the major uncertainties in model prediction of mixed-phase clouds. We discuss the occurrence (up to 50% of particles) and aging of rimed ice particles and show correlations of the occurrence and the degree of riming with ambient meteorological parameters using data gathered by the Particle Habit Imaging and Polar Scattering (PHIPS) probe during three airborne in situ field campaigns.
Zoé Brasseur, Dimitri Castarède, Erik S. Thomson, Michael P. Adams, Saskia Drossaart van Dusseldorp, Paavo Heikkilä, Kimmo Korhonen, Janne Lampilahti, Mikhail Paramonov, Julia Schneider, Franziska Vogel, Yusheng Wu, Jonathan P. D. Abbatt, Nina S. Atanasova, Dennis H. Bamford, Barbara Bertozzi, Matthew Boyer, David Brus, Martin I. Daily, Romy Fösig, Ellen Gute, Alexander D. Harrison, Paula Hietala, Kristina Höhler, Zamin A. Kanji, Jorma Keskinen, Larissa Lacher, Markus Lampimäki, Janne Levula, Antti Manninen, Jens Nadolny, Maija Peltola, Grace C. E. Porter, Pyry Poutanen, Ulrike Proske, Tobias Schorr, Nsikanabasi Silas Umo, János Stenszky, Annele Virtanen, Dmitri Moisseev, Markku Kulmala, Benjamin J. Murray, Tuukka Petäjä, Ottmar Möhler, and Jonathan Duplissy
Atmos. Chem. Phys., 22, 5117–5145, https://doi.org/10.5194/acp-22-5117-2022, https://doi.org/10.5194/acp-22-5117-2022, 2022
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The present measurement report introduces the ice nucleation campaign organized in Hyytiälä, Finland, in 2018 (HyICE-2018). We provide an overview of the campaign settings, and we describe the measurement infrastructure and operating procedures used. In addition, we use results from ice nucleation instrument inter-comparison to show that the suite of these instruments deployed during the campaign reports consistent results.
Kevin J. Sanchez, Bo Zhang, Hongyu Liu, Matthew D. Brown, Ewan C. Crosbie, Francesca Gallo, Johnathan W. Hair, Chris A. Hostetler, Carolyn E. Jordan, Claire E. Robinson, Amy Jo Scarino, Taylor J. Shingler, Michael A. Shook, Kenneth L. Thornhill, Elizabeth B. Wiggins, Edward L. Winstead, Luke D. Ziemba, Georges Saliba, Savannah L. Lewis, Lynn M. Russell, Patricia K. Quinn, Timothy S. Bates, Jack Porter, Thomas G. Bell, Peter Gaube, Eric S. Saltzman, Michael J. Behrenfeld, and Richard H. Moore
Atmos. Chem. Phys., 22, 2795–2815, https://doi.org/10.5194/acp-22-2795-2022, https://doi.org/10.5194/acp-22-2795-2022, 2022
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Atmospheric particle concentrations impact clouds, which strongly impact the amount of sunlight reflected back into space and the overall climate. Measurements of particles over the ocean are rare and expensive to collect, so models are necessary to fill in the gaps by simulating both particle and clouds. However, some measurements are needed to test the accuracy of the models. Here, we measure changes in particles in different weather conditions, which are ideal for comparison with models.
Siddhant Gupta, Greg M. McFarquhar, Joseph R. O'Brien, Michael R. Poellot, David J. Delene, Rose M. Miller, and Jennifer D. Small Griswold
Atmos. Chem. Phys., 22, 2769–2793, https://doi.org/10.5194/acp-22-2769-2022, https://doi.org/10.5194/acp-22-2769-2022, 2022
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This study evaluates the impact of biomass burning aerosols on precipitation in marine stratocumulus clouds using observations from the NASA ObseRvations of Aerosols above CLouds and their intEractionS (ORACLES) field campaign over the Southeast Atlantic. Instances of contact and separation between aerosol and cloud layers show polluted clouds have a lower precipitation rate and a lower precipitation susceptibility. This information will help improve cloud representation in Earth system models.
Anna E. Luebke, André Ehrlich, Michael Schäfer, Kevin Wolf, and Manfred Wendisch
Atmos. Chem. Phys., 22, 2727–2744, https://doi.org/10.5194/acp-22-2727-2022, https://doi.org/10.5194/acp-22-2727-2022, 2022
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A combination of aircraft and satellite observations is used to show how the characteristics of tropical shallow clouds interact with incoming and outgoing energy. A complete depiction of these clouds is challenging to obtain, but such data are useful for understanding how models can correctly represent them. The amount of cloud is found to be the most important factor, while other cloud characteristics become increasingly impactful when more cloud is present.
Graciela B. Raga, Darrel Baumgardner, Blanca Rios, Yanet Díaz-Esteban, Alejandro Jaramillo, Martin Gallagher, Bastien Sauvage, Pawel Wolff, and Gary Lloyd
Atmos. Chem. Phys., 22, 2269–2292, https://doi.org/10.5194/acp-22-2269-2022, https://doi.org/10.5194/acp-22-2269-2022, 2022
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The In-Service Aircraft for a Global Observing System (IAGOS) is a small fleet of commercial aircraft that carry a suite of meteorological, gas, aerosol, and cloud sensors and have been measuring worldwide for almost 9 years, since late 2011. Extreme ice events (EIEs) have been identified from the IAGOS cloud measurements and linked to surface emissions for biomass and fossil fuel consumption. The results reported here are highly relevant for climate change and flight operations forecasting.
Carolina Viceto, Irina V. Gorodetskaya, Annette Rinke, Marion Maturilli, Alfredo Rocha, and Susanne Crewell
Atmos. Chem. Phys., 22, 441–463, https://doi.org/10.5194/acp-22-441-2022, https://doi.org/10.5194/acp-22-441-2022, 2022
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We focus on anomalous moisture transport events known as atmospheric rivers (ARs). During ACLOUD and PASCAL, three AR events were identified: 30 May, 6 June, and 9 June 2017. We explore their spatio-temporal evolution and precipitation patterns using measurements, reanalyses, and a model. We show the importance of the following: Atlantic and Siberian pathways during spring–summer in the Arctic, AR-associated heat/moisture increase, precipitation phase transition, and high-resolution datasets.
Sandra Vázquez-Martín, Thomas Kuhn, and Salomon Eliasson
Atmos. Chem. Phys., 21, 18669–18688, https://doi.org/10.5194/acp-21-18669-2021, https://doi.org/10.5194/acp-21-18669-2021, 2021
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High-resolution top- and side-view images of snow ice particles taken by the D-ICI instrument are used to determine the shape; size; cross-sectional area; fall speed; and, based upon these properties, the mass of the individual snow particles. The study analyses the relationships between these fundamental properties as a function of particle shape and highlights that the choice of size parameter, maximum dimension or another characteristic length, is crucial when relating fall speed to mass.
Elvis Torres-Delgado, Darrel Baumgardner, and Olga L. Mayol-Bracero
Atmos. Chem. Phys., 21, 18011–18027, https://doi.org/10.5194/acp-21-18011-2021, https://doi.org/10.5194/acp-21-18011-2021, 2021
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African dust aerosols can travel thousands of kilometers and reach the Caribbean and other places, where they can serve as ice and cloud condensation nuclei and alter precipitation patterns. Cloud microphysical properties (droplet number and size) were measured in a Caribbean tropical montane cloud forest along with models and satellite products. The results of the study suggest that meteorology and air mass history are more important for cloud processes than aerosols transported from Africa.
Irini Tsiodra, Georgios Grivas, Kalliopi Tavernaraki, Aikaterini Bougiatioti, Maria Apostolaki, Despina Paraskevopoulou, Alexandra Gogou, Constantine Parinos, Konstantina Oikonomou, Maria Tsagkaraki, Pavlos Zarmpas, Athanasios Nenes, and Nikolaos Mihalopoulos
Atmos. Chem. Phys., 21, 17865–17883, https://doi.org/10.5194/acp-21-17865-2021, https://doi.org/10.5194/acp-21-17865-2021, 2021
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We analyze observations from year-long measurements at Athens, Greece. Nighttime wintertime PAH levels are 4 times higher than daytime, and wintertime values are 15 times higher than summertime. Biomass burning aerosol during wintertime pollution events is responsible for these significant wintertime enhancements and accounts for 43 % of the population exposure to PAH carcinogenic risk. Biomass burning poses additional health risks beyond those associated with the high PM levels that develop.
Tiziana Bräuer, Christiane Voigt, Daniel Sauer, Stefan Kaufmann, Valerian Hahn, Monika Scheibe, Hans Schlager, Felix Huber, Patrick Le Clercq, Richard H. Moore, and Bruce E. Anderson
Atmos. Chem. Phys., 21, 16817–16826, https://doi.org/10.5194/acp-21-16817-2021, https://doi.org/10.5194/acp-21-16817-2021, 2021
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Over half of aviation climate impact is caused by contrails. Biofuels can reduce the ice crystal numbers in contrails and mitigate the climate impact. The experiment ECLIF II/NDMAX in 2018 assessed the effects of biofuels on contrails and aviation emissions. The NASA DC-8 aircraft performed measurements inside the contrail of the DLR A320. One reference fuel and two blends of the biofuel HEFA and kerosene are analysed. We find a max reduction of contrail ice numbers through biofuel use of 40 %.
Yue Sun and Chuanfeng Zhao
Atmos. Chem. Phys., 21, 16555–16574, https://doi.org/10.5194/acp-21-16555-2021, https://doi.org/10.5194/acp-21-16555-2021, 2021
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Using high-resolution multi-year warm season data, the influence of aerosol on precipitation time over the North China Plain (NCP), Yangtze River Delta (YRD), and Pearl River Delta (PRD) is investigated. Aerosol amount and type have significant influence on precipitation time: precipitation start time is advanced by 3 h in the NCP, delayed 2 h in the PRD, and negligibly changed in the YRD. Aerosol impact on precipitation is also influenced by precipitation type and meteorological conditions.
Oscar Javier Rojas Muñoz, Marjolaine Chiriaco, Sophie Bastin, and Justine Ringard
Atmos. Chem. Phys., 21, 15699–15723, https://doi.org/10.5194/acp-21-15699-2021, https://doi.org/10.5194/acp-21-15699-2021, 2021
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A method is developed and evaluated to quantify each process that affects hourly 2 m temperature variations on a local scale, based almost exclusively on observations retrieved from an observatory near the Paris region. Each term involved in surface temperature variations is estimated, and its contribution and importance are also assessed. It is found that clouds are the main modulator on hourly temperature variations for most hours of the day, and thus their characterization is addressed.
Michael P. Jensen, Virendra P. Ghate, Dié Wang, Diana K. Apoznanski, Mary J. Bartholomew, Scott E. Giangrande, Karen L. Johnson, and Mandana M. Thieman
Atmos. Chem. Phys., 21, 14557–14571, https://doi.org/10.5194/acp-21-14557-2021, https://doi.org/10.5194/acp-21-14557-2021, 2021
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This work compares the large-scale meteorology, cloud, aerosol, precipitation, and thermodynamics of closed- and open-cell cloud organizations using long-term observations from the astern North Atlantic. Open-cell cases are associated with cold-air outbreaks and occur in deeper boundary layers, with stronger winds and higher rain rates compared to closed-cell cases. These results offer important benchmarks for model representation of boundary layer clouds in this climatically important region.
Karlie N. Rees, Dhiraj K. Singh, Eric R. Pardyjak, and Timothy J. Garrett
Atmos. Chem. Phys., 21, 14235–14250, https://doi.org/10.5194/acp-21-14235-2021, https://doi.org/10.5194/acp-21-14235-2021, 2021
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Accurate predictions of weather and climate require descriptions of the mass and density of snowflakes as a function of their size. Few measurements have been obtained to date because snowflakes are so small and fragile. This article describes results from a new instrument that automatically measures individual snowflake size, mass, and density. Key findings are that small snowflakes have much lower densities than is often assumed and that snowflake density increases with temperature.
Ramon Campos Braga, Daniel Rosenfeld, Ovid O. Krüger, Barbara Ervens, Bruna A. Holanda, Manfred Wendisch, Trismono Krisna, Ulrich Pöschl, Meinrat O. Andreae, Christiane Voigt, and Mira L. Pöhlker
Atmos. Chem. Phys., 21, 14079–14088, https://doi.org/10.5194/acp-21-14079-2021, https://doi.org/10.5194/acp-21-14079-2021, 2021
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Quantifying the precipitation within clouds is crucial for our understanding of the Earth's hydrological cycle. Using in situ measurements of cloud and rain properties over the Amazon Basin and Atlantic Ocean, we show here a linear relationship between the effective radius (re) and precipitation water content near the tops of convective clouds for different pollution states and temperature levels. Our results emphasize the role of re to determine both initiation and amount of precipitation.
Haoran Li, Alexei Korolev, and Dmitri Moisseev
Atmos. Chem. Phys., 21, 13593–13608, https://doi.org/10.5194/acp-21-13593-2021, https://doi.org/10.5194/acp-21-13593-2021, 2021
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Kelvin–Helmholtz (K–H) clouds embedded in a stratiform precipitation event were uncovered via radar Doppler spectral analysis. Given the unprecedented detail of the observations, we show that multiple populations of secondary ice columns were generated in the pockets where larger cloud droplets are formed and not at some constant level within the cloud. Our results highlight that the K–H instability is favorable for liquid droplet growth and secondary ice formation.
Alice Henkes, Gilberto Fisch, Luiz A. T. Machado, and Jean-Pierre Chaboureau
Atmos. Chem. Phys., 21, 13207–13225, https://doi.org/10.5194/acp-21-13207-2021, https://doi.org/10.5194/acp-21-13207-2021, 2021
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The Amazonian boundary layer is investigated during the dry season in order to better understand the processes that occur between night and day until the stage where shallow cumulus clouds become deep. Observations show that shallow to deep clouds are characterized by a shorter morning transition stage (e.g., the time needed to eliminate the stable boundary layer inversion), while higher humidity above the boundary layer favors the evolution from shallow to deep cumulus clouds.
Youssef Wehbe, Sarah A. Tessendorf, Courtney Weeks, Roelof Bruintjes, Lulin Xue, Roy Rasmussen, Paul Lawson, Sarah Woods, and Marouane Temimi
Atmos. Chem. Phys., 21, 12543–12560, https://doi.org/10.5194/acp-21-12543-2021, https://doi.org/10.5194/acp-21-12543-2021, 2021
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The role of dust aerosols as ice-nucleating particles is well established in the literature, whereas their role as cloud condensation nuclei is less understood, particularly in polluted desert environments. We analyze coincident aerosol size distributions and cloud particle imagery collected over the UAE with a research aircraft. Despite the presence of ultra-giant aerosol sizes associated with dust, an active collision–coalescence process is not observed within the limited depths of warm cloud.
Kwonil Kim, Wonbae Bang, Eun-Chul Chang, Francisco J. Tapiador, Chia-Lun Tsai, Eunsil Jung, and Gyuwon Lee
Atmos. Chem. Phys., 21, 11955–11978, https://doi.org/10.5194/acp-21-11955-2021, https://doi.org/10.5194/acp-21-11955-2021, 2021
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This study analyzes the microphysical characteristics of snow in complex terrain and the nearby ocean according to topography and wind pattern during the ICE-POP 2018 campaign. The observations from collocated vertically pointing radars and disdrometers indicate that the riming in the mountainous region is likely caused by a strong shear and turbulence. The different behaviors of aggregation and riming were found by three different synoptic patterns (air–sea interaction, cold low, and warm low).
J. Brant Dodson, Patrick C. Taylor, Richard H. Moore, David H. Bromwich, Keith M. Hines, Kenneth L. Thornhill, Chelsea A. Corr, Bruce E. Anderson, Edward L. Winstead, and Joseph R. Bennett
Atmos. Chem. Phys., 21, 11563–11580, https://doi.org/10.5194/acp-21-11563-2021, https://doi.org/10.5194/acp-21-11563-2021, 2021
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Aircraft in situ observations of low-level Beaufort Sea cloud properties and thermodynamics from the ARISE campaign are compared with the Arctic System Reanalysis (ASR) to better understand deficiencies in simulated clouds. ASR produces too little cloud water, which coincides with being too warm and dry. In addition, ASR struggles to produce cloud water even in favorable thermodynamic conditions. A random sampling experiment also shows the effects of the limited aircraft sampling on the results.
Sinan Gao, Chunsong Lu, Yangang Liu, Seong Soo Yum, Jiashan Zhu, Lei Zhu, Neel Desai, Yongfeng Ma, and Shang Wu
Atmos. Chem. Phys., 21, 11225–11241, https://doi.org/10.5194/acp-21-11225-2021, https://doi.org/10.5194/acp-21-11225-2021, 2021
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Only a few studies have been focused on the vertical variation of entrainment mixing with low resolutions which are crucial to cloud-related processes. A sawtooth pattern allows for an examination of mixing with high vertical resolution. A new measure is introduced to estimate entrainment mixing to overcome difficulties in existing measures, where vertical profile indicates that entrainment mixing becomes more homogeneous with decreasing altitudes, consistent with the dynamical measures.
Jianhao Zhang and Paquita Zuidema
Atmos. Chem. Phys., 21, 11179–11199, https://doi.org/10.5194/acp-21-11179-2021, https://doi.org/10.5194/acp-21-11179-2021, 2021
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The subtropical Atlantic hosts one of the planet's largest marine low cloud decks and interacts with biomass burning aerosol from approximately July through October. This study clarifies how the monthly evolution in meteorology and the biomass burning aerosol vertical structure affects the seasonal cycle in its low cloud fraction, such that the July–October evolution in low cloud cover and morphology are reinforced, when compared to scenarios with less aerosol present.
Jakub L. Nowak, Holger Siebert, Kai-Erik Szodry, and Szymon P. Malinowski
Atmos. Chem. Phys., 21, 10965–10991, https://doi.org/10.5194/acp-21-10965-2021, https://doi.org/10.5194/acp-21-10965-2021, 2021
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Turbulence properties in two cases of a marine stratocumulus-topped boundary layer have been compared using high-resolution helicopter-borne in situ measurements. In the coupled one, small-scale turbulence was close to isotropic and reasonably followed inertial range scaling according to Kolmogorov theory. In the decoupled one, turbulence was more anisotropic and the scaling deviated from theory. This was more pronounced in the cloud and subcloud layers in comparison to the surface mixed layer.
Sandra Vázquez-Martín, Thomas Kuhn, and Salomon Eliasson
Atmos. Chem. Phys., 21, 7545–7565, https://doi.org/10.5194/acp-21-7545-2021, https://doi.org/10.5194/acp-21-7545-2021, 2021
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In this work, we present new fall speed measurements of natural snow particles and ice crystals. We study the particle fall speed relationships and how they depend on particle shape. We analyze these relationships as a function of particle size, cross-sectional area, and area ratio for different particle shape groups. We also investigate the dependence of the particle fall speed on the orientation, as it has a large impact on the cross-sectional area.
Nathan Magee, Katie Boaggio, Samantha Staskiewicz, Aaron Lynn, Xuanyi Zhao, Nicholas Tusay, Terance Schuh, Manisha Bandamede, Lucas Bancroft, David Connelly, Kevin Hurler, Bryan Miner, and Elissa Khoudary
Atmos. Chem. Phys., 21, 7171–7185, https://doi.org/10.5194/acp-21-7171-2021, https://doi.org/10.5194/acp-21-7171-2021, 2021
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The cryo-electron microscopy images and analysis in this paper result from the first balloon-borne capture, preservation, and high-resolution imaging of ice particles from cirrus clouds. The images show cirrus particle complexity in unprecedented detail, revealing unexpected morphology, a mixture of surface roughness scales and patterns, embedded aerosols, and a large variety of habits within a single cloud. The results should inform ongoing efforts to refine modeling of cirrus radiative impact.
Thiago S. Biscaro, Luiz A. T. Machado, Scott E. Giangrande, and Michael P. Jensen
Atmos. Chem. Phys., 21, 6735–6754, https://doi.org/10.5194/acp-21-6735-2021, https://doi.org/10.5194/acp-21-6735-2021, 2021
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This study suggests that there are two distinct modes driving diurnal precipitating convective clouds over the central Amazon. In the wet season, local factors such as turbulence and nighttime cloud coverage are the main controls of daily precipitation, while dry-season daily precipitation is modulated primarily by the mesoscale convective pattern. The results imply that models and parameterizations must consider different formulations based on the seasonal cycle to correctly resolve convection.
Fabiola Ramelli, Jan Henneberger, Robert O. David, Johannes Bühl, Martin Radenz, Patric Seifert, Jörg Wieder, Annika Lauber, Julie T. Pasquier, Ronny Engelmann, Claudia Mignani, Maxime Hervo, and Ulrike Lohmann
Atmos. Chem. Phys., 21, 6681–6706, https://doi.org/10.5194/acp-21-6681-2021, https://doi.org/10.5194/acp-21-6681-2021, 2021
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Orographic mixed-phase clouds are an important source of precipitation, but the ice formation processes within them remain uncertain. Here we investigate the origin of ice crystals in a mixed-phase cloud in the Swiss Alps using aerosol and cloud data from in situ and remote sensing observations. We found that ice formation primarily occurs in cloud top generating cells. Our results indicate that secondary ice processes are active in the feeder region, which can enhance orographic precipitation.
Ulrike Egerer, André Ehrlich, Matthias Gottschalk, Hannes Griesche, Roel A. J. Neggers, Holger Siebert, and Manfred Wendisch
Atmos. Chem. Phys., 21, 6347–6364, https://doi.org/10.5194/acp-21-6347-2021, https://doi.org/10.5194/acp-21-6347-2021, 2021
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This paper describes a case study of a three-day period with a persistent humidity inversion above a mixed-phase cloud layer in the Arctic. It is based on measurements with a tethered balloon, complemented with results from a dedicated high-resolution large-eddy simulation. Both methods show that the humidity layer acts to provide moisture to the cloud layer through downward turbulent transport. This supply of additional moisture can contribute to the persistence of Arctic clouds.
Andrew M. Dzambo, Tristan L'Ecuyer, Kenneth Sinclair, Bastiaan van Diedenhoven, Siddhant Gupta, Greg McFarquhar, Joseph R. O'Brien, Brian Cairns, Andrzej P. Wasilewski, and Mikhail Alexandrov
Atmos. Chem. Phys., 21, 5513–5532, https://doi.org/10.5194/acp-21-5513-2021, https://doi.org/10.5194/acp-21-5513-2021, 2021
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This work highlights a new algorithm using data collected from the 2016–2018 NASA ORACLES field campaign. This algorithm synthesizes cloud and rain measurements to attain estimates of cloud and precipitation properties over the southeast Atlantic Ocean. Estimates produced by this algorithm compare well against in situ estimates. Increased rain fractions and rain rates are found in regions of atmospheric instability. This dataset can be used to explore aerosol–cloud–precipitation interactions.
Maxi Boettcher, Andreas Schäfler, Michael Sprenger, Harald Sodemann, Stefan Kaufmann, Christiane Voigt, Hans Schlager, Donato Summa, Paolo Di Girolamo, Daniele Nerini, Urs Germann, and Heini Wernli
Atmos. Chem. Phys., 21, 5477–5498, https://doi.org/10.5194/acp-21-5477-2021, https://doi.org/10.5194/acp-21-5477-2021, 2021
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Warm conveyor belts (WCBs) are important airstreams in extratropical cyclones, often leading to the formation of intense precipitation. We present a case study that involves aircraft, lidar and radar observations of water and clouds in a WCB ascending from western Europe across the Alps towards the Baltic Sea during the field campaigns HyMeX and T-NAWDEX-Falcon in October 2012. A probabilistic trajectory measure and an airborne tracer experiment were used to confirm the long pathway of the WCB.
Fabiola Ramelli, Jan Henneberger, Robert O. David, Annika Lauber, Julie T. Pasquier, Jörg Wieder, Johannes Bühl, Patric Seifert, Ronny Engelmann, Maxime Hervo, and Ulrike Lohmann
Atmos. Chem. Phys., 21, 5151–5172, https://doi.org/10.5194/acp-21-5151-2021, https://doi.org/10.5194/acp-21-5151-2021, 2021
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Interactions between dynamics, microphysics and orography can enhance precipitation. Yet the exact role of these interactions is still uncertain. Here we investigate the role of low-level blocking and turbulence for precipitation by combining remote sensing and in situ observations. The observations show that blocked flow can induce the formation of feeder clouds and that turbulence can enhance hydrometeor growth, demonstrating the importance of local flow effects for orographic precipitation.
Cited articles
Ali, S., Mehta, S. K., Annamalai, V., Ananthavel, A., and Reddy, R.:
Qualitative observations of the cirrus clouds effect on the thermal
structure of the tropical tropopause, J. Atmos.
Sol.-Terr. Phys., 211, 105440, https://doi.org/10.1016/j.jastp.2020.105440, 2020.
Ananthavel, A., Mehta, S. K., Ali, S., Reddy, T. R., Annamalai, V., and Rao,
D. N: Micro Pulse Lidar measurements in coincidence with CALIPSO overpasses:
Comparison of tropospheric aerosols over Kattankulathur (12.82∘ N,
80.04∘ E), Atmos. Pollut. Res., 12, 101082, https://doi.org/10.1016/j.apr.2021.101082, 2021a.
Ananthavel, A., Mehta, S. K., Reddy, T. R., Ali, S., and Rao, D. N.:
Vertical distributions and columnar properties of the aerosols during
different seasons over Kattankulathur (12.82∘ N, 80.04∘ E): A
semi-urban tropical coastal station, Atmos. Environ., 256, 118457, https://doi.org/10.1016/j.atmosenv.2021.118457,
2021b.
Annamalai, V. and Mehta, S. K.: Extreme variability of the tropical tropopause
over the Indian monsoon region, Clim. Dynam.,
https://doi.org/10.1007/s00382-022-06264-7, 2022.
Campbell, J. R., Welton, E. J., Spinhirne, J. D., Ji, Q., Tsay, S. C.,
Piketh, S. J., and Holben, B. N.: Micropulse lidar observations of
tropospheric aerosols over northeastern South Africa during the ARREX and
SAFARI 2000 dry season experiments, J. Geophys. Res., 108, 8497,
https://doi.org/10.1029/2002JD002563, 2003.
Chen, S. S. and Houze Jr., R. A.:Diurnal variation and life-cycle of
deep convective systems over the tropical Pacific warm pool, Q.
J. Roy. Meteorol. Soc., 123, 357–388, 1997.
Corti, T., Luo, B. P., Fu, Q., Vömel, H., and Peter, T.: The impact of
cirrus clouds on tropical troposphere-to-stratosphere transport, Atmos.
Chem. Phys., 6, 2539–2547, https://doi.org/10.5194/acp-6-2539-2006, 2006.
Cziczo, D. J. and Froyd, K. D.: Sampling the composition of cirrus ice
residuals, Atmos. Res., 142, 15–31, https://doi.org/10.1016/j.atmosres.2013.06.012,
2014.
Dai, G., Wu, S., Song, X., and Liu, L.: Optical and Geometrical Properties of
Cirrus Clouds over the Tibetan Plateau Measured by Lidar and Radiosonde
Sounding at the Summertime in 2014, Remote
Sens., 2019, 302,
https://doi.org/10.1051/epjconf/201817605040, 2017.
Das, S. K., Chiang, C. W., and Nee, J. B.: Influence of tropical easterly jet
on upper tropical cirrus: An observational study from CALIPSO, Aura-MLS, and
NCEP/NCAR data, J. Geophys. Res.-Atmos., 116, D12, https://doi.org/10.1029/2011JD015923,
2011.
Dessler, A. E., Palm, S. P., Hart, W. D., and Spinhirne, J. D.:
Tropopause-level thin cirrus coverage revealed by ICESat/Geoscience Laser
Altimeter System, J. Geophys. Res.-Atmos., 111, 1–10, https://doi.org/10.1029/2005JD006586, 2006.
Devasthale, A. and Fueglistaler, S.: A climatological perspective of deep convection penetrating the TTL during the Indian summer monsoon from the AVHRR and MODIS instruments, Atmos. Chem. Phys., 10, 4573–4582, https://doi.org/10.5194/acp-10-4573-2010, 2010.
Davis, S. M., Liang, C. K., and Rosenlof, K. H.: Interannual
variability of tropical tropopause layer clouds, Geophys. Res.
Lett., 40, 2862–2866, 2013.
Dowling, D. R. and Radke, L. F.: A summary of the physical
properties of cirrus clouds, J. Appl. Meteorol. Climatol.,
29, 970–978, 1990.
Eriksson, P., Rydberg, B., Johnston, M., Murtagh, D. P., Struthers, H., Ferrachat, S., and Lohmann, U.: Diurnal variations of humidity and ice water content in the tropical upper troposphere, Atmos. Chem. Phys., 10, 11519–11533, https://doi.org/10.5194/acp-10-11519-2010, 2010.
Feofilov, A. G. and Stubenrauch, C. J.: Diurnal variation of high-level clouds from the synergy of AIRS and IASI space-borne infrared sounders, Atmos. Chem. Phys., 19, 13957–13972, https://doi.org/10.5194/acp-19-13957-2019, 2019.
Fleming, J. R. and Cox, S. K.: Radiative effects of cirrus clouds, J.
Atmos. Sci., 31, 2182–2188, 1974.
Flynn, C. J., Mendoza, A., Zheng, Y., and Mathur, S.: Novel
polarization-sensitive micropulse lidar measurement technique, Opt.
Exp., 15, 2785–2790, 2007.
Fu, Q. and Liou, K. N.: Parameterization of the Radiative Properties of
Cirrus Clouds, J. Atmos. Sci., 50, 2008–2025,
https://doi.org/10.1175/1520-0469(1993)050<2008:POTRPO>2.0.CO;2,
1993.
Fueglistaler, S., Dessler, A. E., Dunkerton, T. J., Folkins, I., Fu, Q., and
Mote, P. W.: Tropical tropopause layer, Rev. Geophys., 47, https://doi.org/10.1029/2008RG000267, 2009.
Fujiwara, M., Iwasaki, S., Shimizu, A., Inai, Y., Shiotani, M., Hasebe, F.,
Matsui, I., Sugimoto, N., Okamoto, H., Nishi, N., Hamada, A., Sakazaki, T.,
and Yoneyama, K.: Cirrus observations in the tropical tropopause layer over
the western Pacific, J. Geophys. Res., 114, D09304,
https://doi.org/10.1029/2008JD011040, 2009.
Goswami, B. N. and Xavier, P. K.: ENSO control on the south
Asian monsoon through the length of the rainy season, Geophys. Res.
Lett., 32, https://doi.org/10.1029/2005GL023216, 2005.
Gouveia, D. A., Barja, B., Barbosa, H. M. J., Seifert, P., Baars, H., and
Pauliquevis, T.: Optical and geometrical properties of cirrus clouds in
Amazonia derived from 1 year of ground-based lidar measurements, Atmos. Chem. Phys., 17,
3619–3636, https://doi.org/10.5194/acp-17-3619-2017, 2017.
Gupta, A. K., Rajeev, K., and Sijikumar, S.: Day-night changes in the
altitude distribution, physical properties and radiative impact of
low-altitude clouds over the stratocumulus-dominated subtropical oceans,
J. Atmos. Sol.-Terr. Phys., 161, 118–126, 2017.
Haladay, T. and Stephens, G.: Characteristics of tropical thin cirrus clouds
deduced from joint CloudSat and CALIPSO observations, J. Geophys. Res.-Atmos., 114, 1–13, https://doi.org/10.1029/2008JD010675, 2009.
Held, I. M. and Hoskins, B. J.: Large-scale eddies and the general
circulation of the troposphere, in: Advances in geophysics, Elsevier, Vol. 28,
3–31, https://doi.org/10.1016/S0065-2687(08)60218-6, 1985
JCA Marrero, B. B.: Cirrus Clouds Optical Properties Measured With Lidar At
Camagüey, Cuba, Propiedades Ópticas de Nubes Cirros Medidas con
Lidar en Camagüey, Cuba, Opt. Pura Apl., 39, 11–16, 2006.
Heymsfield, A. J.: Ice particles observed in a cirriform cloud at
−83 ∘C and implications for polar stratospheric clouds, J. Atmos.
Sci., 43, 851–855, 1986.
Heymsfield, A. J. and Iaquinta, J.: Cirrus crystal terminal velocities, J.
Atmos. Sci., 57, 914–936, 2000.
Jakob, C.: Ice clouds in numerical weather prediction models:
Progress, problems, and prospects, Cirrus, Oxford University Press, https://doi.org/10.1093/oso/9780195130720.001.0001, 2002.
Jensen, E. J., Toon, O. B., Pfister, L., and Selkirk, H. B.: Dehydration of
the upper troposphere and lower by subvisible cirrus clouds near the
tropical tropopause, Geophys. Res. Lett., 23, 825–828, 1996.
Jensen, E. J., Diskin, G., Lawson, R. P., Lance, S., Bui, T. P., Hlavka, D.,
McGill, M., Pfister, L., Toon, O. B., and Gao, R.: Ice nucleation and
dehydration in the Tropical Tropopause Layer, P. Natl. Acad. Sci. USA,
110, 2041–2046, https://doi.org/10.1073/pnas.1217104110, 2013.
Kim, J., Grise, K. M., and Son, S.-W.: Thermal characteristics of the
cold-point tropopause region in CMIP5 models, J. Geophys. Res.-Atmos.,
118, 8827–8841, https://doi.org/10.1002/jgrd.50649, 2013.
Kim, J.-E., Alexander, M. J., Bui, T. P., Dean-Day, J. M., Lawson, R. P.,
Woods, S., Hlavka, D., Pfister, L., and Jensen, E. J.: Ubiquitous influence of waves on tropical high cirrus
clouds, Geophys. Res. Lett., 43, 5895–5901, 2016.
Kottayil, A., Satheesan, K., John, V. O., and Antony, R.: Diurnal variation of deep convective clouds over Indian monsoon region and its association with rainfall, Atmos. Res., 255, 105540, https://doi.org/10.1016/j.atmosres.2021.105540, 2021.
Kulkarni, P., Ramachandran, S., Bhavani Kumar, Y., Narayana Rao, D., and
Krishnaiah, M.: Features of upper troposphere and lower stratosphere
aerosols observed by lidar over Gadanki, a tropical Indian station, J.
Geophys. Res., 113, D17207, https://doi.org/10.1029/2007JD009411, 2008.
Li, J., Yi, Y., Minnis, P., Huang, J., Yan, H., Ma, Y., and Ayers, J.
K.: Radiative effect differences between multi-layered and single-layer
clouds derived from CERES, CALIPSO, and CloudSat data, J.
Quant. Spectrosc. Ra., 112, 361–375, 2011.
Liou, K. N.: Influence of cirrus clouds on weather and climate
processes A global perspective, Mon. Weather Rev., 114, 1167–1199,
https://doi.org/10.1175/1520-0493(1986)114<1167:IOCCOW>2.0.CO;2,
1986.
Liu, Z., Vaughan, M., Winker, D., Kittaka, C., Getzewich, B., Kuehn, R.,
Omar, A., Powell, K., Trepte, C., and Hostetler, C.: The CALIPSO Lidar Cloud and
Aerosol Discrimination: Version 2 Algorithm and Initial Assessment of
Performance, J. Atmos. Ocean. Technol., 26, 1198–1213,
https://doi.org/10.1175/2009JTECHA1229.1, 2009.
Lynch, D. K.: Cirrus, Oxford University Press,
https://books.google.co.in/books/about/Cirrus.html?id=58v1fg4xeo8C
(last access: 25 October 2018), 2002.
Massie, S. T., Khosravi, R., and Gille, J. C.: A multidecadal study of cirrus
in the tropical tropopause layer, J. Geophys. Res.-Atmos., 118, 7938–7947,
https://doi.org/10.1002/jgrd.50596, 2013.
McFarquhar, G. M., Heymsfield, A. J., Spinhirne, J., and Hart, B.: Thin and
Subvisual Tropopause Tropical Cirrus: Observations and Radiative Impacts, J.
Atmos. Sci., 57, 1841–1853, https://doi.org/10.1175/1520-0469(2000)057<1841:TASTTC>2.0.CO;2, 2000.
Meenu, S., Rajeev, K., and Parameswaran, K.: Regional and vertical
distribution of semitransparent cirrus clouds over the tropical Indian
region derived from CALIPSO data, J. Atmos. Sol.-Terr. Phys., 73,
1967–1979, https://doi.org/10.1016/j.jastp.2011.06.007, 2011.
Mehta, S. K., Venkat Ratnam, M., and Krishna Murthy, B. V.:
Characteristics of the tropical tropopause over different longitudes,
J. Atmos. Sol.-Terr. Phys., 73, 2462–2473, 2011.
Mehta, S. K., Fujiwara, M., Tsuda, T., and Vernier, J. P: Effect of recent
minor volcanic eruptions on temperatures in the upper troposphere and lower
stratosphere, J. Atmos. Sol.-Terr. Phys., 129,
99–110, 2015.
Mitchell, D. L., Rasch, P., Ivanova, D., McFarquhar, G., and Nousiainen, T.:
Impact of small ice crystal assumptions on ice sedimentation rates in cirrus
clouds and GCM simulations, Geophys. Res. Lett., 35, https://doi.org/10.1029/2008GL033552, 2008.
Muhsin, M., Sunilkumar, S. V., Ratnam, M. V., Parameswaran, K., Murthy, B.
K., Ramkumar, G., and Rajeev, K.: Diurnal variation of atmospheric stability
and turbulence during different seasons in the troposphere and lower
stratosphere derived from simultaneous radiosonde observations at two
tropical stations, in the Indian Peninsula, Atmos. Res., 180,
12–23, 2016.
Muhsin, M., Sunilkumar, S. V., Venkat Ratnam, M., Krishna Murthy, B. V., and
Parameswaran, K.: Seasonal and diurnal variations of tropical tropopause
layer (TTL) over the Indian Peninsula, J. Geophys. Res.-Atmos., 122, 12–672, 2017.
Murthy, B. V. K., Satheesan, K., Parameswaran, K., Sasi, M. N., Ramkumar,
G., Bhavanikumar, Y., Raghunath, K., and Krishniah, M.: Equatorial waves in
temperature in the altitude range 4 to 70 km, Q. J. R. Meteorol. Soc.,
128, 819–837, https://doi.org/10.1256/0035900021643700, 2002.
Nair, A. K. M., Rajeev, K., Mishra, M. K., Thampi, B. V., and Parameswaran,
K.: Multiyear lidar observations of the descending nature of tropical cirrus
clouds, J. Geophys. Res.-Atmos., 117, 1–9, https://doi.org/10.1029/2011JD017406,
2012.
Nazaryan, H., McCormick, M. P., and Menzel, W. P.: Global characterization of
cirrus clouds using CALIPSO data, J. Geophys. Res.-Atmos., 113, 1–11,
https://doi.org/10.1029/2007JD009481, 2008.
Noel, V., Chepfer, H., Chiriaco, M., and Yorks, J.: The diurnal cycle of cloud profiles over land and ocean between 51∘ S and 51∘ N, seen by the CATS spaceborne lidar from the International Space Station, Atmos. Chem. Phys., 18, 9457–9473, https://doi.org/10.5194/acp-18-9457-2018, 2018.
Pal, S. R., Steinbrecht, W., and Carswell, A. I.: Automated method for lidar
determination of cloud-base height and vertical extent, Appl. Opt., 31,
1488, https://doi.org/10.1364/AO.31.001488, 1992.
Pan, L. L. and Munchak, L. A.: Relationship of cloud top to the tropopause
and jet structure from CALIPSO data, J. Geophys. Res.-Atmos., 116,
1–17, https://doi.org/10.1029/2010JD015462, 2011.
Pandit, A. K., Gadhavi, H., Ratnam, M. V., Jayaraman, A., Raghunath, K., and
Rao, S. V. B.: Characteristics of cirrus clouds and tropical tropopause
layer: Seasonal variation and long-term trends, J. Atmos. Sol.-Terr.
Phys., 121, 248–256, https://doi.org/10.1016/j.jastp.2014.07.008, 2014.
Pandit, A. K., Gadhavi, H. S., Ratnam, M. V., Raghunath, K., Rao, S. V. B.,
and Jayaraman, A.: Long-term trend analysis and climatology of tropical
cirrus clouds using 16 years of lidar data set over Southern India, Atmos.
Chem. Phys., 15, 13833–13848, https://doi.org/10.5194/acp-15-13833-2015, 2015.
Parameswaran, K., SunilKumar, S. V., Krishna Murthy, B. V., Satheesan, K.,
Bhavani Kumar, Y., Krishnaiah, M., and Nair, P. R.: Lidar observations of
cirrus cloud near the tropical tropopause: Temporal variations and
association with tropospheric turbulence, Atmos. Res., 69, 29–49,
https://doi.org/10.1016/j.atmosres.2003.08.002, 2003.
Parameswaran, K., Sunilkumar, S. V., Murthy, B. K., and Satheesan, K.: Lidar observations of high altitude cirrus clouds
near the tropical tropopause, Adv. Space Res., 34, 845–850, 2004.
Platt, C. M., Young, S. A., Carswell, A. I., Pal, S. R., McCormick, M. P.,
Winker, D. M., DelGuasta, M., Stefanutti, L., Eberhard, W. L., Hardesty, M.,
Flamant, P. H., Valentin, R., Forgan, B., Gimmestad, G. G., Jäger, H.,
Khmelevtsov, S. S., Kolev, I., Kaprieolev, B., Lu, D., Sassen, K.,
Shamanaev, V. S., Uchino, O., Mizuno, Y., Wandinger, U., Weitkamp, C.,
Ansmann, A., and Wooldridge, C.: The Experimental Cloud Lidar Pilot Study
(ECLIPS) for Cloud – Radiation Research, Bull. Am. Meteorol. Soc., 75,
1635–1654, https://doi.org/10.1175/1520-0477(1994)075<1635:TECLPS>2.0.CO;2, 1994.
Podglajen, A., Plougonven, R., Hertzog, A., and Jensen, E.: Impact of gravity
waves on the motion and distribution of atmospheric ice particles, Atmos.
Chem. Phys., 18, 10799–10823, https://doi.org/10.5194/acp-18-10799-2018, 2018.
Ramkumar, T. K., Niranjan Kumar, K., and Mehta, S. K.:
Mesosphere-stratosphere-troposphere radar observations of characteristics of
lower atmospheric high-frequency gravity waves passing through the tropical
easterly jet, J. Geophys. Res.-Atmos., 115, https://doi.org/10.1029/2009JD013733, 2010.
Randel, W. J. and Jensen, E. J.: Physical processes in the tropical
tropopause layer and their roles in a changing climate, Nat. Geosci.,
6, 169–176, 2013.
Randel, W. J., Garcia, R. R., and Wu, F.: Time-Dependent Upwelling in the
Tropical Lower Stratosphere Estimated from the Zonal-Mean Momentum Budget,
J. Atmos. Sci., 59, 2141–2152, https://doi.org/10.1175/1520-0469(2002)059<2141:tduitt>2.0.co;2, 2002.
Ratnam, M. V., Raman, M. R., Mehta, S. K., Nath, D., Krishnamurthy, B. V.,
Rajeevan, M., and Rao, D. N.: Sub-daily variations observed in
Tropical Easterly Jet (TEJ) streams, J. Atmos. Sol.-Terr. Phys., 73, 731–740, 2011.
Reddy, T. R., Mehta, S. K., Ananthavel, A., Ali, S., Annamalai, V., and Rao,
D. N.:Seasonal characteristics of sea breeze and thermal internal boundary
layer over Indian east coast region, Meteorol. Atmos. Phys., 133, 217–232, 2020.
Riese, M., Ploeger, F., Rap, A., Vogel, B., Konopka, P., Dameris, M., and
Forster, P.: Impact of uncertainties in atmospheric mixing on simulated UTLS
composition and related radiative effects, J. Geophys. Res.-Atmos., 117, 1–10,
https://doi.org/10.1029/2012JD017751, 2012.
Sandhya, M., Sridharan, S., Indira Devi, M., Niranjan, K., and Jayaraman, A.: A case study of formation and maintenance of a lower stratospheric cirrus cloud over the tropics, Ann. Geophys., 33, 599–608, https://doi.org/10.5194/angeo-33-599-2015, 2015.
Sassen, K. and Byung, S. C.: Subvisual-thin cirrus lidar dataset
for satellite verification and climatological research, J. Appl.
Meteorol. Climatol., 31, 1275–1285, 1992.
Sassen, K., Wang, Z., and Liu, D.: Global distribution of cirrus clouds from
CloudSat/Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations
(CALIPSO) measurements, J. Geophys. Res., 113, D00A12,
https://doi.org/10.1029/2008JD009972, 2008.
Sassen, K., Wang, Z., and Liu, D.: Cirrus clouds and deep convection in the
tropics: Insights from CALIPSO and CloudSat, J. Geophys. Res.-Atmos.,
114, 1–11, https://doi.org/10.1029/2009JD011916, 2009.
Satheesan, K. and Murthy, B. V. K.: Turbulence parameters in the tropical
troposphere and lower stratosphere, J. Geophys. Res.-Atmos., 107, 1–13, 2002.
Selkirk, H. B.: The tropopause cold trap in the Australian monsoon during STEP/AMEX 1987, J. Geophys. Res.-Atmos., 98, 8591–8610, 1993.
Simpson, M., Warrior, H., Raman, S., Aswathanarayana, P. A., Mohanty, U. C., and Suresh, R.: Sea-breeze-initiated rainfall over the east coast of India during the Indian southwest monsoon, Nat. Hazard., 42, 401–413, 2007.
Sivakumar, V., Bhavanikumar, Y., Rao, P. B., Mizutani, K., Aoki, T., Yasui,
M., and Itabe, T.: Lidar observed characteristics of the tropical cirrus
clouds, Radio Sci., 38, https://doi.org/10.1029/2002RS002719, 2003.
Spinhirne, J. D., Palm, S. P., Hart, W. D., Hlavka, D. L., and Welton, E. J.:
Cloud and aerosol measurements from GLAS: Overview and initial results, Geophys. Res. Lett.,
32, 1–5, https://doi.org/10.1029/2005GL023507, 2005.
Stephens, G. L. and Webster, P. J.: Clouds and Climate: Sensitivity of
Simple Systems, J. Atmos. Sci., 38, 235–247,
https://doi.org/10.1175/1520-0469(1981)038<0235:CACSOS>2.0.CO;2,
1981.
Subrahmanyam, K. V. and Kumar, K. K.: CloudSat observations of cloud-type distribution over the Indian summer monsoon region, Ann. Geophys., 31, 1155–1162, https://doi.org/10.5194/angeo-31-1155-2013, 2013.
Sunil Kumar, S. V., Parameswaran, K., and Krishna Murthy, B. V.: Lidar
observations of cirrus cloud near the tropical tropopause: General features,
Atmos. Res., 66, 203–227, https://doi.org/10.1016/S0169-8095(02)00159-X, 2003.
Sunilkumar, S. V., Parameswaran, K., Rajeev, K., Krishna Murthy, B. V.,
Meenu, S., Mehta, S. K., and Babu, A.: Semitransparent cirrus clouds in the
tropical tropopause layer during two contrasting seasons, J. Atmos.
Sol.-Terr. Phys., 72, 745–762,
https://doi.org/10.1016/j.jastp.2010.03.020, 2010.
Tseng, H.-H. and Fu, Q.: Tropical tropopause layer cirrus and its relation
to tropopause, J. Quant. Spectrosc. Radiat. Transf., 188, 118–131,
https://doi.org/10.1016/J.JQSRT.2016.05.029, 2017.
Tsuda, T., Murayama, Y., Wiryosumarto, H., Harijono, S. W. B., and Kato, S.:
Equatorial waves and diurnal tides, J. Geophys. Res.-Atmos., 99, 10491–10505, https://doi.org/10.1029/94JD00355, 1994.
Vernier, J., Fairlie, T. D., Natarajan, M., Wienhold, F. G., Bian, J.,
Martinsson, B. G., Crumeyrolle, S., Thomason, L. W., and Bedka, K. M.:
J. Geophys. Res.-Atmos., 120, 1608–1619,
https://doi.org/10.1002/2014JD022372.Received, 2015.
Wang, T. and Dessler, A. E.: Analysis of cirrus in the tropical tropopause
layer from CALIPSO and MLS data: A water perspective, , 117,
1–10, https://doi.org/10.1029/2011JD016442, 2012.
Welton, E. J., Voss, K. J., Quinn, P. K., Flatau, P. J., Markowicz, K.,
Campbell, J. R., Spinhirne, J. D., Gordon, H. R., and Johnson, J. E.:
Measurements of aerosol vertical profiles and optical properties during
INDOEX 1999 using micropulse lidars, J. Geophys. Res.-Atmos., 107,
1–20, https://doi.org/10.1029/2000JD000038, 2002.
Winker, D. M. and Trepte, C. R: Laminar cirrus observed near the tropical
tropopause by LITE, Geophys. Res. Lett., 25, 3351–3354, 1998.
Wu, S., Song, X., Liu, B., Dai, G., Liu, J., Zhang, K., Qin, S., Hua, D.,
Gao, F., and Liu, L.: Mobile multi-wavelength polarization Raman lidar for
water vapor, cloud and aerosol measurement, Opt. Express, 23, 33870,
https://doi.org/10.1364/OE.23.033870, 2015.
Wylie, D., Jackson, D. L., Menzel, W. P., and Bates, J. J.: Trends in
Global Cloud Cover in Two Decades of HIRS Observations, J. Clim., 18, 3021–3031, https://doi.org/10.1175/JCLI3461.1, 2005.
Yang, Q., Fu, Q., and Hu, Y.: Radiative impacts of clouds in the tropical
tropopause layer, J. Geophys. Res.-Atmos., 115, https://doi.org/10.1029/2009JD012393,
2010.
Young, S. A.: Analysis of lidar backscatter profiles in optically thin
clouds, Appl. Optics, 34, 7019–7031, 1995.
Short summary
Multiple cirrus clouds frequently occur over regions of deep convection in the tropics. Tropical convection has a strong diurnal pattern, with peaks in the afternoon to early evening, over the continents. Continuous micropulse lidar observations over a coastal station in the Indian monsoon region enable us, for the first time, to demonstrate a robust diurnal pattern of single and multiple cirrus occurrences, with peaks during the late afternoon and early morning hours, respectively.
Multiple cirrus clouds frequently occur over regions of deep convection in the tropics. Tropical...
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