Articles | Volume 21, issue 24
https://doi.org/10.5194/acp-21-18499-2021
© Author(s) 2021. 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-21-18499-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
21 Dec 2021
Research article |
| 21 Dec 2021
| 21 Dec 2021
Anthropogenic aerosol effects on tropospheric circulation and sea surface temperature (1980–2020): separating the role of zonally asymmetric forcings
Chenrui Diao
Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843, USA
Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843, USA
Shang-Ping Xie
Scripps Institution of Oceanography, University of California, San
Diego, La Jolla, CA 92093, USA
Related authors
Chenrui Diao, Yangyang Xu, Aixue Hu, and Zhili Wang
EGUsphere, https://doi.org/10.5194/egusphere-2024-1920, https://doi.org/10.5194/egusphere-2024-1920, 2024
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The increase of industrial aerosols in Asia and reductions in North America & Europe during 1980–2020 influenced the climate changes over the Pacific Ocean differently. Asian aerosols caused El Niño-like temperature pattern and slightly weakened the natural variation in North Pacific, while reduced western countries’ emissions led to extensive warming in mid-to-high latitudes of North Pacific. Human impacts on the Pacific climate may change when emission reduction occur over Asia in the future.
Yangyang Xu, Lei Lin, Simone Tilmes, Katherine Dagon, Lili Xia, Chenrui Diao, Wei Cheng, Zhili Wang, Isla Simpson, and Lorna Burnell
Earth Syst. Dynam., 11, 673–695, https://doi.org/10.5194/esd-11-673-2020, https://doi.org/10.5194/esd-11-673-2020, 2020
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Two geoengineering schemes to mitigate global warming, (a) capturing atmospheric CO2 and (b) injecting stratospheric sulfur gas, are compared. Based on two sets of large-ensemble model experiments, we show that sulfur injection will effectively mitigate projected terrestrial drying over the Americas, and the mitigation benefit will emerge more quickly than with carbon capture. Innovative means of sulfur injection should continue to be explored as one potential low-cost climate solution.
Chenrui Diao, Yangyang Xu, Aixue Hu, and Zhili Wang
EGUsphere, https://doi.org/10.5194/egusphere-2024-1920, https://doi.org/10.5194/egusphere-2024-1920, 2024
Short summary
Short summary
The increase of industrial aerosols in Asia and reductions in North America & Europe during 1980–2020 influenced the climate changes over the Pacific Ocean differently. Asian aerosols caused El Niño-like temperature pattern and slightly weakened the natural variation in North Pacific, while reduced western countries’ emissions led to extensive warming in mid-to-high latitudes of North Pacific. Human impacts on the Pacific climate may change when emission reduction occur over Asia in the future.
Katrine A. Gorham, Sam Abernethy, Tyler R. Jones, Peter Hess, Natalie M. Mahowald, Daphne Meidan, Matthew S. Johnson, Maarten M. J. W. van Herpen, Yangyang Xu, Alfonso Saiz-Lopez, Thomas Röckmann, Chloe A. Brashear, Erika Reinhardt, and David Mann
Atmos. Chem. Phys., 24, 5659–5670, https://doi.org/10.5194/acp-24-5659-2024, https://doi.org/10.5194/acp-24-5659-2024, 2024
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Rapid reduction in atmospheric methane is needed to slow the rate of global warming. Reducing anthropogenic methane emissions is a top priority. However, atmospheric methane is also impacted by rising natural emissions and changing sinks. Studies of possible atmospheric methane removal approaches, such as iron salt aerosols to increase the chlorine radical sink, benefit from a roadmapped approach to understand if there may be viable and socially acceptable ways to decrease future risk.
Chaman Gul, Shichang Kang, Siva Praveen Puppala, Xiaokang Wu, Cenlin He, Yangyang Xu, Inka Koch, Sher Muhammad, Rajesh Kumar, and Getachew Dubache
Atmos. Chem. Phys., 22, 8725–8737, https://doi.org/10.5194/acp-22-8725-2022, https://doi.org/10.5194/acp-22-8725-2022, 2022
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This work aims to understand concentrations, spatial variability, and potential source regions of light-absorbing impurities (black carbon aerosols, dust particles, and organic carbon) in the surface snow of central and western Himalayan glaciers and their impact on snow albedo and radiative forcing.
Yangyang Xu, Lei Lin, Simone Tilmes, Katherine Dagon, Lili Xia, Chenrui Diao, Wei Cheng, Zhili Wang, Isla Simpson, and Lorna Burnell
Earth Syst. Dynam., 11, 673–695, https://doi.org/10.5194/esd-11-673-2020, https://doi.org/10.5194/esd-11-673-2020, 2020
Short summary
Short summary
Two geoengineering schemes to mitigate global warming, (a) capturing atmospheric CO2 and (b) injecting stratospheric sulfur gas, are compared. Based on two sets of large-ensemble model experiments, we show that sulfur injection will effectively mitigate projected terrestrial drying over the Americas, and the mitigation benefit will emerge more quickly than with carbon capture. Innovative means of sulfur injection should continue to be explored as one potential low-cost climate solution.
Lei Lin, Andrew Gettelman, Yangyang Xu, Chenglai Wu, Zhili Wang, Nan Rosenbloom, Susan C. Bates, and Wenjie Dong
Geosci. Model Dev., 12, 3773–3793, https://doi.org/10.5194/gmd-12-3773-2019, https://doi.org/10.5194/gmd-12-3773-2019, 2019
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Here we evaluate the performance of the Community Atmosphere Model version 6 (CAM6) released in 2018, with the default 1º horizontal resolution and a higher-resolution simulation (approximately 0.25º), against various precipitation observational datasets over Asia. With the prognostic treatment of precipitation processes (which is missing in CAM5) and the new microphysics module, CAM6 is able to better simulate climatological mean and extreme precipitation over Asia.
Huopo Chen, Huijun Wang, Jianqi Sun, Yangyang Xu, and Zhicong Yin
Atmos. Chem. Phys., 19, 233–243, https://doi.org/10.5194/acp-19-233-2019, https://doi.org/10.5194/acp-19-233-2019, 2019
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Our results show that the anthropogenic air pollution over eastern China will increase considerably at the end of 21st century, even though we keep the aerosol emission constant throughout the experiment. Furthermore, estimation shows that the effect of climate change induced by the GHG warming can account for 11%–28% of the changes of anthropogenic air pollution days over this region.
Benjamin M. Sanderson, Yangyang Xu, Claudia Tebaldi, Michael Wehner, Brian O'Neill, Alexandra Jahn, Angeline G. Pendergrass, Flavio Lehner, Warren G. Strand, Lei Lin, Reto Knutti, and Jean Francois Lamarque
Earth Syst. Dynam., 8, 827–847, https://doi.org/10.5194/esd-8-827-2017, https://doi.org/10.5194/esd-8-827-2017, 2017
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We present the results of a set of climate simulations designed to simulate futures in which the Earth's temperature is stabilized at the levels referred to in the 2015 Paris Agreement. We consider the necessary future emissions reductions and the aspects of extreme weather which differ significantly between the 2 and 1.5 °C climate in the simulations.
Zhili Wang, Lei Lin, Meilin Yang, Yangyang Xu, and Jiangnan Li
Atmos. Chem. Phys., 17, 11075–11088, https://doi.org/10.5194/acp-17-11075-2017, https://doi.org/10.5194/acp-17-11075-2017, 2017
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There is still debate over whether the total aerosols enhance or weaken the East Asian summer monsoon (EASM). This could be related to both the complicated nature of aerosol chemical compositions and ocean responses to aerosols. Our results show that there is a clear distinction between fast and slow responses of the EASM to scattering and absorbing aerosols, and the slow response due to aerosol-induced change in sea surface temperature plays an important role in driving the change of the EASM.
Y. Xu, V. Ramanathan, and W. M. Washington
Atmos. Chem. Phys., 16, 1303–1315, https://doi.org/10.5194/acp-16-1303-2016, https://doi.org/10.5194/acp-16-1303-2016, 2016
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We show that black carbon aerosol pollution is likely the dominant factor in causing the accelerated retreat of snowpack in Himalayas. The simulated snow fraction and surface albedo change at the surface, as well as the enhanced warming at higher elevations, are remarkably similar to observations in past decades. The reason for the model's ability to simulate the observed trends is that we replace the model-simulated black carbon forcing with one that is constrained by observations.
Y. Xu and S.-P. Xie
Atmos. Chem. Phys., 15, 5827–5833, https://doi.org/10.5194/acp-15-5827-2015, https://doi.org/10.5194/acp-15-5827-2015, 2015
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Strong solar heating by absorbing aerosols (black carbon) is considered more effective in inducing atmospheric circulation change than reflecting aerosols (sulfate), which do not have direct atmospheric heating effect. Surprisingly, we show that reflecting aerosols induce tropospheric temperature and circulation response similar to that induced by absorbing aerosols. The common response is mediated by the ocean through SST gradient, a process overlooked so far in aerosol-climate connection.
Y. Xu, D. Zaelke, G. J. M. Velders, and V. Ramanathan
Atmos. Chem. Phys., 13, 6083–6089, https://doi.org/10.5194/acp-13-6083-2013, https://doi.org/10.5194/acp-13-6083-2013, 2013
Related subject area
Subject: Dynamics | Research Activity: Atmospheric Modelling and Data Analysis | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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The influences of El Niño–Southern Oscillation on tropospheric ozone in CMIP6 models
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Influence of lower-tropospheric moisture on local soil moisture–precipitation feedback over the US Southern Great Plains
The Lagrangian Atmospheric Radionuclide Transport Model (ARTM) – sensitivity studies and evaluation using airborne measurements of power plant emissions
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The tropopause separates the troposphere, where many greenhouse gases originate, from the stratosphere. This study examines a tropopause defined by potential vorticity – an analogue for angular momentum that changes sharply in the subtropics, creating a transport barrier. Between 1980 and 2017, this tropopause shifted poleward at lower altitudes and equatorward above, suggesting height-dependent changes in atmospheric circulation that may affect greenhouse gas distribution and global warming.
Johannes Mikkola, Alexander Gohm, Victoria A. Sinclair, and Federico Bianchi
EGUsphere, https://doi.org/10.5194/egusphere-2024-1900, https://doi.org/10.5194/egusphere-2024-1900, 2024
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This study investigates the influence of valley floor inclination on diurnal winds and passive tracer transport within idealised mountain valleys using numerical simulations. The valley inclination strengthens the daytime up-valley winds but only up to a certain point. Beyond that critical angle, the winds weaken again. The inclined valleys transport the tracers higher up in the free troposphere which would for example lead to higher potential for long-range transport.
Tanguy Lunel, Maria Antonia Jimenez, Joan Cuxart, Daniel Martinez-Villagrasa, Aaron Boone, and Patrick Le Moigne
Atmos. Chem. Phys., 24, 7637–7666, https://doi.org/10.5194/acp-24-7637-2024, https://doi.org/10.5194/acp-24-7637-2024, 2024
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During the summer in Catalonia, a cool wind, the marinada, blows into the eastern Ebro basin in the afternoon. This study investigates its previously unclear dynamics using observations and a meteorological model. It is found to be driven by a cool marine air mass that flows over the mountains into the basin. The study shows how the sea breeze, upslope winds, larger weather patterns and irrigation play a prominent role in the formation and characteristics of the marinada.
Thanh Le, Seon-Ho Kim, Jae-Yeong Heo, and Deg-Hyo Bae
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We examined the links between the El Niño–Southern Oscillation (ENSO) and tropospheric ozone (O3) using model data. Our results show that ENSO impacts on tropospheric O3 are mainly found over oceans, while the signature of ENSO over continents is largely unclear. These impacts in the midlatitude regions over the Southern Hemisphere may be more significant than previously known. The responses of O3 to ENSO are weak in the middle troposphere and stronger in the upper and lower troposphere.
James M. Salter, Helen N. Webster, and Cameron Saint
Atmos. Chem. Phys., 24, 6251–6274, https://doi.org/10.5194/acp-24-6251-2024, https://doi.org/10.5194/acp-24-6251-2024, 2024
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Models are used to make forecasts of volcanic ash dispersion during eruptions. These models have unknown inputs relating to the eruption itself, physical processes, and meteorological conditions. We use statistical models to predict the output of the expensive physical model and show we can account for the effects of the different inputs. We compare the model to real-world observations and show that accounting for all sources of uncertainty may lead to different conclusions about the inputs.
Alexis Squarcioni, Yelva Roustan, Myrto Valari, Youngseob Kim, Karine Sartelet, Lya Lugon, Fabrice Dugay, and Robin Voitot
EGUsphere, https://doi.org/10.5194/egusphere-2024-1043, https://doi.org/10.5194/egusphere-2024-1043, 2024
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This study highlights the interest of using a street network model to estimate pollutant concentrations of NOx, NO2, and PM2.5 in heterogeneous urban areas, particularly those adjacent to highways, compared with the Subgrid approach embedded in the 3D eulerian model CHIMERE. However, the study also reveals comparable performance between the two approaches for the aforementioned pollutants in areas near the city centre, where urban characteristics are more uniform.
Jing Wang, Yanju Liu, Fei Cheng, Chengyu Song, Qiaoping Li, Yihui Ding, and Xiangde Xu
Atmos. Chem. Phys., 24, 5099–5115, https://doi.org/10.5194/acp-24-5099-2024, https://doi.org/10.5194/acp-24-5099-2024, 2024
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Based on long-term observational, reanalysis, and numerical model simulation datasets from 1901 through 2014, this study shows that precipitation over the East Asian monsoon boundary zone featured prominent interdecadal changes, with dry summers during the periods preceding 1927, 1939–1945, 1968–1982, and 1998–2010 and wet summers during 1928–1938, 1946–1967, and 2011 onwards. The Indian Ocean basin mode is an important oceanic modulator responsible for its interdecadal variations.
Jordi Massagué, Eduardo Torre-Pascual, Cristina Carnerero, Miguel Escudero, Andrés Alastuey, Marco Pandolfi, Xavier Querol, and Gotzon Gangoiti
Atmos. Chem. Phys., 24, 4827–4850, https://doi.org/10.5194/acp-24-4827-2024, https://doi.org/10.5194/acp-24-4827-2024, 2024
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This study analyses three acute ozone episodes in Barcelona (NE Spain) which have occurred only in recent years and are of particular concern due to the city's significant population. The findings uncover a complex interplay of factors, notably shared among episodes, including pollution transport at different scales and specific weather and emission patterns. These insights significantly enhance our understanding of these occurrences and improve predictive capabilities.
Weiming Ma, Hailong Wang, Gang Chen, Yun Qian, Ian Baxter, Yiling Huo, and Mark W. Seefeldt
Atmos. Chem. Phys., 24, 4451–4472, https://doi.org/10.5194/acp-24-4451-2024, https://doi.org/10.5194/acp-24-4451-2024, 2024
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Extreme warming events with surface temperature going above 0°C can occur in the high-Arctic winter. Although reanalysis data show that these events were short-lived and occurred rarely during 1980–2021, they have become more frequent, stronger, and longer lasting latterly. A dipole pattern, comprising high- and low-pressure systems, is found to be the key in driving them. These findings have implications for the recent changes in sea ice, hydrological cycle, and ecosystem over the Arctic.
Gaoyun Wang, Rong Fu, Yizhou Zhuang, Paul A. Dirmeyer, Joseph A. Santanello, Guiling Wang, Kun Yang, and Kaighin McColl
Atmos. Chem. Phys., 24, 3857–3868, https://doi.org/10.5194/acp-24-3857-2024, https://doi.org/10.5194/acp-24-3857-2024, 2024
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This study investigates the influence of lower-tropospheric humidity on land–atmosphere coupling (LAC) during warm seasons in the US Southern Great Plains. Using radiosonde data and a buoyancy model, we find that elevated LT humidity is crucial for generating afternoon precipitation events under dry soil conditions not accounted for by conventional LAC indices. This underscores the importance of considering LT humidity in understanding LAC over dry soil during droughts in the SGP.
Robert Hanfland, Dominik Brunner, Christiane Voigt, Alina Fiehn, Anke Roiger, and Margit Pattantyús-Ábrahám
Atmos. Chem. Phys., 24, 2511–2534, https://doi.org/10.5194/acp-24-2511-2024, https://doi.org/10.5194/acp-24-2511-2024, 2024
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To show that the three-dimensional dispersion of plumes simulated by the Atmospheric Radionuclide Transport Model within the planetary boundary layer agrees with real plumes, we identify the most important input parameters and analyse the turbulence properties of five different turbulence models in very unstable stratification conditions using their deviation from the well-mixed state. Simulations show that one model agrees slightly better in unstable stratification conditions.
Bangjun Cao, Yaping Shao, Xianyu Yang, Xin Yin, and Shaofeng Liu
Atmos. Chem. Phys., 24, 275–285, https://doi.org/10.5194/acp-24-275-2024, https://doi.org/10.5194/acp-24-275-2024, 2024
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Our novel scheme enhances large-eddy simulations (LESs) for atmosphere–land interactions. It couples LES subgrid closure with Monin–Obukhov similarity theory (MOST), overcoming MOST's limitations. Validated over diverse land surfaces, our approach outperforms existing methods, aligning well with field measurements. Robustness is demonstrated across varying model resolutions. MOST's influence strengthens with decreasing grid spacing, particularly for sensible heat flux.
Gaëlle de Coëtlogon, Adrien Deroubaix, Cyrille Flamant, Laurent Menut, and Marco Gaetani
Atmos. Chem. Phys., 23, 15507–15521, https://doi.org/10.5194/acp-23-15507-2023, https://doi.org/10.5194/acp-23-15507-2023, 2023
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Using a numerical atmospheric model, we found that cooling sea surface temperatures along the southern coast of West Africa in July cause the “little dry season”. This effect reduces humidity and pollutant transport inland, potentially enhancing West Africa's synoptic and seasonal forecasting.
Dongqi Lin, Marwan Katurji, Laura E. Revell, Basit Khan, and Andrew Sturman
Atmos. Chem. Phys., 23, 14451–14479, https://doi.org/10.5194/acp-23-14451-2023, https://doi.org/10.5194/acp-23-14451-2023, 2023
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Accurate fog forecasting is difficult in a complex environment. Spatial variations in soil moisture could impact fog. Here, we carried out fog simulations with spatially different soil moisture in complex topography. The soil moisture was calculated using satellite observations. The results show that the spatial variations in soil moisture do not have a significant impact on where fog occurs but do impact how long fog lasts. This finding could improve fog forecasts in the future.
Shuqi Yan, Hongbin Wang, Xiaohui Liu, Fan Zu, and Duanyang Liu
Atmos. Chem. Phys., 23, 13987–14002, https://doi.org/10.5194/acp-23-13987-2023, https://doi.org/10.5194/acp-23-13987-2023, 2023
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In this study, we quantitatively study the effect of the boundary layer low-level jet (BLLJ) on fast fog spatial propagation; i.e., the fog area expands very fast along a certain direction. The wind speed (10 m s−1) and direction (southeast) of the BLLJ core are consistent with fog propagation (9.6 m s−1). The BLLJ-induced temperature and moisture advections are possible reasons for fast fog propagation. The propagation speed would decrease by 6.4 m s−1 if these advections were turned off.
Miriam Saraceni, Lorenzo Silvestri, Peter Bechtold, and Paolina Bongioannini Cerlini
Atmos. Chem. Phys., 23, 13883–13909, https://doi.org/10.5194/acp-23-13883-2023, https://doi.org/10.5194/acp-23-13883-2023, 2023
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This study focuses on three medicanes, tropical-like cyclones that form in the Mediterranean Sea, studied by ensemble forecasting. This involved multiple simulations of the same event by varying initial conditions and model physics parameters, especially related to convection, which showed comparable results. It is found that medicane development is influenced by the model's ability to predict precursor events and the interaction between upper and lower atmosphere dynamics and thermodynamics.
Andrew R. Jones, Susan J. Leadbetter, and Matthew C. Hort
Atmos. Chem. Phys., 23, 12477–12503, https://doi.org/10.5194/acp-23-12477-2023, https://doi.org/10.5194/acp-23-12477-2023, 2023
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The paper explores spread and calibration properties of ensemble atmospheric dispersion forecasts for hypothetical release events. Real-time forecasts from an ensemble weather prediction system were used to generate an ensemble of dispersion predictions and assessed against simulations produced using analysis meteorology. Results demonstrate good performance overall but highlight more skilful predictions for material released in the upper air compared with releases near the surface.
Jason A. Otkin, Lee M. Cronce, Jonathan L. Case, R. Bradley Pierce, Monica Harkey, Allen Lenzen, David S. Henderson, Zac Adelman, Tsengel Nergui, and Christopher R. Hain
Atmos. Chem. Phys., 23, 7935–7954, https://doi.org/10.5194/acp-23-7935-2023, https://doi.org/10.5194/acp-23-7935-2023, 2023
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We performed model simulations to assess the impact of different parameterization schemes, surface initialization datasets, and analysis nudging on lower-tropospheric conditions near Lake Michigan. Simulations were run with high-resolution, real-time datasets depicting lake surface temperatures, green vegetation fraction, and soil moisture. The most accurate results were obtained when using high-resolution sea surface temperature and soil datasets to constrain the model simulations.
Mark T. Richardson, Brian H. Kahn, and Peter Kalmus
Atmos. Chem. Phys., 23, 7699–7717, https://doi.org/10.5194/acp-23-7699-2023, https://doi.org/10.5194/acp-23-7699-2023, 2023
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Convection over land often triggers hours after a satellite last passed overhead and measured the state of the atmosphere, and during those hours the atmosphere can change greatly. Here we show that it is possible to reconstruct most of those changes by using weather forecast winds to predict where warm and moist air parcels will travel. The results can be used to better predict where precipitation is likely to happen in the hours after satellite measurements.
Lars Hoffmann, Paul Konopka, Jan Clemens, and Bärbel Vogel
Atmos. Chem. Phys., 23, 7589–7609, https://doi.org/10.5194/acp-23-7589-2023, https://doi.org/10.5194/acp-23-7589-2023, 2023
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Atmospheric convection plays a key role in tracer transport in the troposphere. Global meteorological forecasts and reanalyses typically have a coarse spatiotemporal resolution that does not adequately resolve the dynamics, transport, and mixing of air associated with storm systems or deep convection. We discuss the application of the extreme convection parameterization in a Lagrangian transport model to improve simulations of tracer transport from the boundary layer into the free troposphere.
Angshuman Modak and Thorsten Mauritsen
Atmos. Chem. Phys., 23, 7535–7549, https://doi.org/10.5194/acp-23-7535-2023, https://doi.org/10.5194/acp-23-7535-2023, 2023
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We provide an improved estimate of equilibrium climate sensitivity (ECS) constrained based on the instrumental temperature record including the corrections for the pattern effect. The improved estimate factors in the uncertainty caused by the underlying sea-surface temperature datasets used in the estimates of pattern effect. This together with the inter-model spread lifts the corresponding IPCC AR6 estimate to 3.2 K [1.8 to 11.0], which is lower and better constrained than in past studies.
Xiaoyu Sun, Mathias Palm, Katrin Müller, Jonas Hachmeister, and Justus Notholt
Atmos. Chem. Phys., 23, 7075–7090, https://doi.org/10.5194/acp-23-7075-2023, https://doi.org/10.5194/acp-23-7075-2023, 2023
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The tropical western Pacific (TWP) is an active interhemispheric transport region contributing significantly to the global climate. A method to determine the chemical equator was developed by model simulations of a virtual passive tracer to analyze transport in the tropics, with a focus on the TWP region. We compare the chemical equator with tropical rain belts and wind fields and obtain a vertical pattern of interhemispheric transport processes which shows tilt structure in certain seasons.
Andrew E. Schuh and Andrew R. Jacobson
Atmos. Chem. Phys., 23, 6285–6297, https://doi.org/10.5194/acp-23-6285-2023, https://doi.org/10.5194/acp-23-6285-2023, 2023
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A comparison of atmospheric carbon dioxide concentrations resulting from two different atmospheric transport models showed large differences in predicted concentrations with significant space–time correlations. The vertical mixing of long-lived trace gases by convection was determined to be the main driver of these differences. The resulting uncertainty was deemed significant to the application of using atmospheric gradients of carbon dioxide to estimate surface fluxes of carbon dioxide.
Qike Yang, Xiaoqing Wu, Xiaodan Hu, Zhiyuan Wang, Chun Qing, Tao Luo, Pengfei Wu, Xianmei Qian, and Yiming Guo
Atmos. Chem. Phys., 23, 6339–6355, https://doi.org/10.5194/acp-23-6339-2023, https://doi.org/10.5194/acp-23-6339-2023, 2023
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The AMPS-forecasted Richardson number was first comprehensively validated over the Antarctic continent. Some potential underlying reasons for the discrepancies between the forecasts and observations were analyzed. The underlying physical processes of triggering atmospheric turbulence in Antarctica were investigated. Our results suggest that the estimated Richardson number by the AMPS is reasonable and the turbulence conditions in Antarctica are well revealed.
Edward Groot and Holger Tost
Atmos. Chem. Phys., 23, 6065–6081, https://doi.org/10.5194/acp-23-6065-2023, https://doi.org/10.5194/acp-23-6065-2023, 2023
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It is shown that the outflow from cumulonimbus clouds or thunderstorms in the upper troposphere and lower stratosphere in idealized high-resolution simulations (LESs) depends linearly on the net amount of latent heat released by the cloud for fixed geometry of the clouds. However, it is shown that, in more realistic situations, convective organization and aggregation (collecting mechanisms of cumulonimbus clouds) affect the amount of outflow non-linearly through non-idealized geometry.
Zixuan Jia, Carlos Ordóñez, Ruth M. Doherty, Oliver Wild, Steven T. Turnock, and Fiona M. O'Connor
Atmos. Chem. Phys., 23, 2829–2842, https://doi.org/10.5194/acp-23-2829-2023, https://doi.org/10.5194/acp-23-2829-2023, 2023
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This study investigates the influence of the winter large-scale circulation on daily concentrations of PM2.5 and their sensitivity to emissions. The new proposed circulation index can effectively distinguish different levels of air pollution and explain changes in PM2.5 sensitivity to emissions from local and surrounding regions. We then project future changes in PM2.5 concentrations using this index and find an increase in PM2.5 concentrations over the region due to climate change.
Chao Lin, Yunyi Wang, Ryozo Ooka, Cédric Flageul, Youngseob Kim, Hideki Kikumoto, Zhizhao Wang, and Karine Sartelet
Atmos. Chem. Phys., 23, 1421–1436, https://doi.org/10.5194/acp-23-1421-2023, https://doi.org/10.5194/acp-23-1421-2023, 2023
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In this study, SSH-aerosol, a modular box model that simulates the evolution of gas, primary, and secondary aerosols, is coupled with the computational fluid dynamics (CFD) software, OpenFOAM and Code_Saturne. The transient dispersion of pollutants emitted from traffic in a street canyon of Greater Paris is simulated. The coupled model achieved better agreement in NO2 and PM10 with measurement data than the conventional CFD simulation which regards pollutants as passive scalars.
Johannes Mikkola, Victoria A. Sinclair, Marja Bister, and Federico Bianchi
Atmos. Chem. Phys., 23, 821–842, https://doi.org/10.5194/acp-23-821-2023, https://doi.org/10.5194/acp-23-821-2023, 2023
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Local winds in four valleys located in the Nepal Himalayas are studied by means of high-resolution meteorological modelling. Well-defined daytime up-valley winds are simulated in all of the valleys with some variation in the flow depth and strength among the valleys and their parts. Parts of the valleys with a steep valley floor inclination (2–5°) are associated with weaker and shallower daytime up-valley winds compared with the parts that have nearly flat valley floors (< 1°).
Edward Groot and Holger Tost
Atmos. Chem. Phys., 23, 565–585, https://doi.org/10.5194/acp-23-565-2023, https://doi.org/10.5194/acp-23-565-2023, 2023
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Thunderstorm systems play an important role in the dynamics of the Earth’s atmosphere, and some of them form a well-organised line: squall lines. Simulations of such squall lines with very small initial perturbations are compared to a reference simulation. The evolution of perturbations and processes amplifying them are analysed. It is shown that the formation of new secondary thunderstorm cells (after the initial primary cells) directly ahead of the line affects the spread strongly.
Matthias Nützel, Sabine Brinkop, Martin Dameris, Hella Garny, Patrick Jöckel, Laura L. Pan, and Mijeong Park
Atmos. Chem. Phys., 22, 15659–15683, https://doi.org/10.5194/acp-22-15659-2022, https://doi.org/10.5194/acp-22-15659-2022, 2022
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During the Asian summer monsoon season, a large high-pressure system is present at levels close to the tropopause above Asia. We analyse how air masses are transported from surface levels to this high-pressure system, which shows distinct features from the surrounding air masses. To this end, we employ multiannual data from two complementary models that allow us to analyse the climatology as well as the interannual and intraseasonal variability of these transport pathways.
Alice Crawford, Tianfeng Chai, Binyu Wang, Allison Ring, Barbara Stunder, Christopher P. Loughner, Michael Pavolonis, and Justin Sieglaff
Atmos. Chem. Phys., 22, 13967–13996, https://doi.org/10.5194/acp-22-13967-2022, https://doi.org/10.5194/acp-22-13967-2022, 2022
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This study describes the development of a workflow which produces probabilistic and quantitative forecasts of volcanic ash in the atmosphere. The workflow includes methods of incorporating satellite observations of the ash cloud into a modeling framework as well as verification statistics that can be used to guide further model development and provide information for risk-based approaches to flight planning.
Alessandro Carlo Maria Savazzi, Louise Nuijens, Irina Sandu, Geet George, and Peter Bechtold
Atmos. Chem. Phys., 22, 13049–13066, https://doi.org/10.5194/acp-22-13049-2022, https://doi.org/10.5194/acp-22-13049-2022, 2022
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Winds are of great importance for the transport of energy and moisture in the atmosphere. In this study we use measurements from the EUREC4A field campaign and several model experiments to understand the wind bias in the forecasts produced by the European Centre for Medium-Range Weather Forecasts. We are able to link the model errors to heights above 2 km and to the representation of the diurnal cycle of winds: the model makes the winds too slow in the morning and too strong in the evening.
Ivo Neefjes, Roope Halonen, Hanna Vehkamäki, and Bernhard Reischl
Atmos. Chem. Phys., 22, 11155–11172, https://doi.org/10.5194/acp-22-11155-2022, https://doi.org/10.5194/acp-22-11155-2022, 2022
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Collisions between ionic and dipolar molecules and clusters facilitate the formation of atmospheric aerosol particles, which affect global climate and air quality. We compared often-used classical approaches for calculating ion–dipole collision rates with robust atomistic computer simulations. While classical approaches work for simple ions and dipoles only, our modeling approach can also efficiently calculate reasonable collision properties for more complex systems.
Alice Maison, Cédric Flageul, Bertrand Carissimo, Yunyi Wang, Andrée Tuzet, and Karine Sartelet
Atmos. Chem. Phys., 22, 9369–9388, https://doi.org/10.5194/acp-22-9369-2022, https://doi.org/10.5194/acp-22-9369-2022, 2022
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This paper presents a parameterization of the tree crown effect on air flow and pollutant dispersion in a street network model used to simulate air quality at the street level. The new parameterization is built using a finer-scale model (computational fluid dynamics). The tree effect increases with the leaf area index and the crown volume fraction of the trees; the street horizontal velocity is reduced by up to 68 % and the vertical transfer into or out of the street by up to 23 %.
Natalie J. Harvey, Helen F. Dacre, Cameron Saint, Andrew T. Prata, Helen N. Webster, and Roy G. Grainger
Atmos. Chem. Phys., 22, 8529–8545, https://doi.org/10.5194/acp-22-8529-2022, https://doi.org/10.5194/acp-22-8529-2022, 2022
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In the event of a volcanic eruption, airlines need to make decisions about which routes are safe to operate and ensure that airborne aircraft land safely. The aim of this paper is to demonstrate the application of a statistical technique that best combines ash information from satellites and a suite of computer forecasts of ash concentration to provide a range of plausible estimates of how much volcanic ash emitted from a volcano is available to undergo long-range transport.
Jean-Pierre Chaboureau, Laurent Labbouz, Cyrille Flamant, and Alma Hodzic
Atmos. Chem. Phys., 22, 8639–8658, https://doi.org/10.5194/acp-22-8639-2022, https://doi.org/10.5194/acp-22-8639-2022, 2022
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Ground-based, spaceborne and rare airborne observations of biomass burning aerosols (BBAs) during the AEROCLO-sA field campaign in 2017 are complemented with convection-permitting simulations with online trajectories. The results show that the radiative effect of the BBA accelerates the southern African easterly jet and generates upward motions that transport the BBAs to higher altitudes and farther southwest.
Annika Drews, Wenjuan Huo, Katja Matthes, Kunihiko Kodera, and Tim Kruschke
Atmos. Chem. Phys., 22, 7893–7904, https://doi.org/10.5194/acp-22-7893-2022, https://doi.org/10.5194/acp-22-7893-2022, 2022
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Solar irradiance varies with a period of approximately 11 years. Using a unique large chemistry–climate model dataset, we investigate the solar surface signal in the North Atlantic and European region and find that it changes over time, depending on the strength of the solar cycle. For the first time, we estimate the potential predictability associated with including realistic solar forcing in a model. These results may improve seasonal to decadal predictions of European climate.
Shipra Jain, Ruth M. Doherty, David Sexton, Steven Turnock, Chaofan Li, Zixuan Jia, Zongbo Shi, and Lin Pei
Atmos. Chem. Phys., 22, 7443–7460, https://doi.org/10.5194/acp-22-7443-2022, https://doi.org/10.5194/acp-22-7443-2022, 2022
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We provide a range of future projections of winter haze and clear conditions over the North China Plain (NCP) using multiple simulations from a climate model for the high-emission scenario (RCP8.5). The frequency of haze conducive weather is likely to increase whereas the frequency of clear weather is likely to decrease in future. The total number of hazy days for a given winter can be as much as ˜3.5 times higher than the number of clear days over the NCP.
Antonio Capponi, Natalie J. Harvey, Helen F. Dacre, Keith Beven, Cameron Saint, Cathie Wells, and Mike R. James
Atmos. Chem. Phys., 22, 6115–6134, https://doi.org/10.5194/acp-22-6115-2022, https://doi.org/10.5194/acp-22-6115-2022, 2022
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Forecasts of the dispersal of volcanic ash in the atmosphere are hampered by uncertainties in parameters describing the characteristics of volcanic plumes. Uncertainty quantification is vital for making robust flight-planning decisions. We present a method using satellite data to refine a series of volcanic ash dispersion forecasts and quantify these uncertainties. We show how we can improve forecast accuracy and potentially reduce the regions of high risk of volcanic ash relevant to aviation.
Piyush Srivastava, Ian M. Brooks, John Prytherch, Dominic J. Salisbury, Andrew D. Elvidge, Ian A. Renfrew, and Margaret J. Yelland
Atmos. Chem. Phys., 22, 4763–4778, https://doi.org/10.5194/acp-22-4763-2022, https://doi.org/10.5194/acp-22-4763-2022, 2022
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The parameterization of surface turbulent fluxes over sea ice remains a weak point in weather forecast and climate models. Recent theoretical developments have introduced more extensive physics but these descriptions are poorly constrained due to a lack of observation data. Here we utilize a large dataset of measurements of turbulent fluxes over sea ice to tune the state-of-the-art parameterization of wind stress, and compare it with a previous scheme.
Yiqing Liu, Zhiwen Luo, and Sue Grimmond
Atmos. Chem. Phys., 22, 4721–4735, https://doi.org/10.5194/acp-22-4721-2022, https://doi.org/10.5194/acp-22-4721-2022, 2022
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Anthropogenic heat emission from buildings is important for atmospheric modelling in cities. The current building anthropogenic heat flux is simplified by building energy consumption. Our research proposes a novel approach to determine ‘real’ building anthropogenic heat emission from the changes in energy balance fluxes between occupied and unoccupied buildings. We hope to provide new insights into future parameterisations of building anthropogenic heat flux in urban climate models.
Lars Hoffmann and Reinhold Spang
Atmos. Chem. Phys., 22, 4019–4046, https://doi.org/10.5194/acp-22-4019-2022, https://doi.org/10.5194/acp-22-4019-2022, 2022
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We present an intercomparison of 2009–2018 lapse rate tropopause characteristics as derived from ECMWF's ERA5 and ERA-Interim reanalyses. Large-scale features are similar, but ERA5 shows notably larger variability, which we mainly attribute to UTLS temperature fluctuations due to gravity waves being better resolved by ECMWF's IFS forecast model. Following evaluation with radiosondes and GPS data, we conclude ERA5 will be a more suitable asset for tropopause-related studies in future work.
Linye Song, Shangfeng Chen, Wen Chen, Jianping Guo, Conglan Cheng, and Yong Wang
Atmos. Chem. Phys., 22, 1669–1688, https://doi.org/10.5194/acp-22-1669-2022, https://doi.org/10.5194/acp-22-1669-2022, 2022
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This study shows that in most years when haze pollution (HP) over the North China Plain (NCP) is more (less) serious in winter, air conditions in the following spring are also worse (better) than normal. Conversely, there are some years when HP in the following spring is opposed to that in winter. It is found that North Atlantic sea surface temperature (SST) anomalies play important roles in HP evolution over the NCP. Thus North Atlantic SST is an important preceding signal for NCP HP evolution.
Anna A. Shestakova, Dmitry G. Chechin, Christof Lüpkes, Jörg Hartmann, and Marion Maturilli
Atmos. Chem. Phys., 22, 1529–1548, https://doi.org/10.5194/acp-22-1529-2022, https://doi.org/10.5194/acp-22-1529-2022, 2022
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This article presents a comprehensive analysis of the easterly orographic wind episode which occurred over Svalbard on 30–31 May 2017. This wind caused a significant temperature rise on the lee side of the mountains and greatly intensified the snowmelt. This episode was investigated on the basis of measurements collected during the ACLOUD/PASCAL field campaigns with the help of numerical modeling.
Xiadong An, Lifang Sheng, Chun Li, Wen Chen, Yulian Tang, and Jingliang Huangfu
Atmos. Chem. Phys., 22, 725–738, https://doi.org/10.5194/acp-22-725-2022, https://doi.org/10.5194/acp-22-725-2022, 2022
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The North China Plain (NCP) suffered many periods of haze in winter during 1985–2015, related to the rainfall-induced diabatic heating over southern China. The haze over the NCP is modulated by an anomalous anticyclone caused by the Rossby wave and a north–south circulation (NSC) induced mainly by diabatic heating. As a Rossby wave source, rainfall-induced diabatic heating supports waves and finally strengthens the anticyclone over the NCP. These changes favor haze over the NCP.
Francisco J. Pérez-Invernón, Heidi Huntrieser, Sergio Soler, Francisco J. Gordillo-Vázquez, Nicolau Pineda, Javier Navarro-González, Víctor Reglero, Joan Montanyà, Oscar van der Velde, and Nikos Koutsias
Atmos. Chem. Phys., 21, 17529–17557, https://doi.org/10.5194/acp-21-17529-2021, https://doi.org/10.5194/acp-21-17529-2021, 2021
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Lightning-ignited fires tend to occur in remote areas and can spread significantly before suppression. Long continuing current (LCC) lightning, preferably taking place in dry thunderstorms, is believed to be the main precursor of lightning-ignited fires. We analyze fire databases of lightning-ignited fires in the Mediterranean basin and report the shared meteorological conditions of fire- and LCC-lightning-producing thunderstorms. These results can be useful to improve fire forecasting methods.
Diego Aliaga, Victoria A. Sinclair, Marcos Andrade, Paulo Artaxo, Samara Carbone, Evgeny Kadantsev, Paolo Laj, Alfred Wiedensohler, Radovan Krejci, and Federico Bianchi
Atmos. Chem. Phys., 21, 16453–16477, https://doi.org/10.5194/acp-21-16453-2021, https://doi.org/10.5194/acp-21-16453-2021, 2021
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We investigate the origin of air masses sampled at Mount Chacaltaya, Bolivia. Three-quarters of the measured air has not been influenced by the surface in the previous 4 d. However, it is rare that, at any given time, the sampled air has not been influenced at all by the surface, and often the sampled air has multiple origins. The influence of the surface is more prevalent during day than night. Furthermore, during the 6-month study, one-third of the air masses originated from Amazonia.
Michael Biggart, Jenny Stocker, Ruth M. Doherty, Oliver Wild, David Carruthers, Sue Grimmond, Yiqun Han, Pingqing Fu, and Simone Kotthaus
Atmos. Chem. Phys., 21, 13687–13711, https://doi.org/10.5194/acp-21-13687-2021, https://doi.org/10.5194/acp-21-13687-2021, 2021
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Heat-related illnesses are of increasing concern in China given its rapid urbanisation and our ever-warming climate. We examine the relative impacts that land surface properties and anthropogenic heat have on the urban heat island (UHI) in Beijing using ADMS-Urban. Air temperature measurements and satellite-derived land surface temperatures provide valuable means of evaluating modelled spatiotemporal variations. This work provides critical information for urban planners and UHI mitigation.
Tobias Wolf, Lasse H. Pettersson, and Igor Esau
Atmos. Chem. Phys., 21, 12463–12477, https://doi.org/10.5194/acp-21-12463-2021, https://doi.org/10.5194/acp-21-12463-2021, 2021
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House heating by wood-burning stoves is cozy and needed in boreal cities, e.g., Bergen, Norway. But smoke (aerosols) from stoves may reduce urban air quality. It can be transported over long distance excessively polluting some neighborhoods. Who will suffer the most? Our modelling study looks at urban pollution in unprecedented meter-sized details tracing smoke pathways and turbulent dispersion in a typical city. We prototype effective policy scenarios to mitigate urban air quality problems.
Piotr Sekuła, Anita Bokwa, Jakub Bartyzel, Bogdan Bochenek, Łukasz Chmura, Michał Gałkowski, and Mirosław Zimnoch
Atmos. Chem. Phys., 21, 12113–12139, https://doi.org/10.5194/acp-21-12113-2021, https://doi.org/10.5194/acp-21-12113-2021, 2021
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The wind shear generated on a local scale by the diversified relief’s impact can be a factor which significantly modifies the spatial pattern of PM10 concentration. The vertical profile of PM10 over a city located in a large valley during the events with high surface-level PM10 concentrations may show a sudden decrease with height not only due to the increase in wind speed, but also due to the change in wind direction alone. Vertical aerosanitary urban zones can be distinguished.
Cited articles
Acosta Navarro, J. C., Ekman, A. M. L., Pausata, F. S. R., Lewinschal, A.,
Varma, V., Seland, Ø., Gauss, M., Iversen, T., Kirkevåg, A.,
Riipinen, I., and Hansson, H. C.: Future Response of Temperature and
Precipitation to Reduced Aerosol Emissions as Compared with Increased
Greenhouse Gas Concentrations, J. Climate, 30, 939–954,
https://doi.org/10.1175/JCLI-D-16-0466.1, 2017.
Allen, R. J. and Ajoku, O.: Future aerosol reductions and widening of the
northern tropical belt, J. Geophys. Res.-Atmos., 121, 6765–6786,
https://doi.org/10.1002/2016JD024803, 2016.
Allen, R. J., Norris, J. R., and Kovilakam, M.: Influence of anthropogenic
aerosols and the Pacific Decadal Oscillation on tropical belt width, Nat.
Geosci., 7, 270–274, https://doi.org/10.1038/ngeo2091, 2014.
Allen, R. J., Turnock, S., Nabat, P., Neubauer, D., Lohmann, U., Olivié, D., Oshima, N., Michou, M., Wu, T., Zhang, J., Takemura, T., Schulz, M., Tsigaridis, K., Bauer, S. E., Emmons, L., Horowitz, L., Naik, V., van Noije, T., Bergman, T., Lamarque, J.-F., Zanis, P., Tegen, I., Westervelt, D. M., Le Sager, P., Good, P., Shim, S., O'Connor, F., Akritidis, D., Georgoulias, A. K., Deushi, M., Sentman, L. T., John, J. G., Fujimori, S., and Collins, W. J.: Climate and air quality impacts due to mitigation of non-methane near-term climate forcers, Atmos. Chem. Phys., 20, 9641–9663, https://doi.org/10.5194/acp-20-9641-2020, 2020.
Amaya, D. J., Siler, N., Xie, S.-P., and Miller, A. J.: The interplay of
internal and forced modes of Hadley Cell expansion: lessons from the global
warming hiatus, Clim. Dynam., 51, 305–319,
https://doi.org/10.1007/s00382-017-3921-5, 2018.
Andreae, M. O., Jones, C. D., and Cox, P. M.: Strong present-day aerosol
cooling implies a hot future, Nature, 435, 1187–1190,
https://doi.org/10.1038/nature03671, 2005.
Bahadur, R., Praveen, P. S., Xu, Y., and Ramanathan, V.: Solar absorption by
elemental and brown carbon determined from spectral observations, P.
Natl. Acad. Sci. USA, 109, 17366–17371,
https://doi.org/10.1073/pnas.1205910109, 2012.
Bellomo, K., Murphy, L. N., Cane, M. A., Clement, A. C., and Polvani, L. M.:
Historical forcings as main drivers of the Atlantic multidecadal variability
in the CESM large ensemble, Clim. Dynam., 50, 3687–3698,
https://doi.org/10.1007/s00382-017-3834-3, 2018.
Bender, F. A.-M.: Aerosol Forcing: Still Uncertain, Still Relevant, AGU
Adv., 1, e2019AV000128, https://doi.org/10.1029/2019AV000128, 2020.
Booth, B. B. B., Dunstone, N. J., Halloran, P. R., Andrews, T., and
Bellouin, N.: Aerosols implicated as a prime driver of twentieth-century
North Atlantic climate variability, Nature, 484, 228–232,
https://doi.org/10.1038/nature10946, 2012.
Broccoli, A. J., Dahl, K. A., and Stouffer, R. J.: Response
of the ITCZ to Northern Hemisphere cooling, Geophys. Res. Lett., 33, L01702,
https://doi.org/10.1029/2005GL024546, 2006.
Cai, W., Bi, D., Church, J., Cowan, T., Dix, M., and Rotstayn, L.:
Pan-oceanic response to increasing anthropogenic aerosols: Impacts on the
Southern Hemisphere oceanic circulation, Geophys. Res. Lett., 33, L21707,
https://doi.org/10.1029/2006GL027513, 2006.
Chemke, R. and Dagan, G.: The Effects of the Spatial Distribution of Direct
Anthropogenic Aerosols Radiative Forcing on Atmospheric Circulation, J.
Climate, 31, 7129–7145, https://doi.org/10.1175/JCLI-D-17-0694.1, 2018.
Chung, E.-S. and Soden, B. J.: Hemispheric climate shifts driven by
anthropogenic aerosol – cloud interactions, Nat. Geosci., 10, 566–571,
https://doi.org/10.1038/ngeo2988, 2017.
Dagan, G., Stier, P., and Watson-Parris, D.: Aerosol Forcing Masks and
Delays the Formation of the North Atlantic Warming Hole by Three Decades,
Geophys. Res. Lett., 47, e2020GL090778, https://doi.org/10.1029/2020GL090778, 2020.
Dai, A., Fyfe, J. C., Xie, S. P., and Dai, X.: Decadal modulation of global
surface temperature by internal climate variability, Nat. Clim. Change, 5,
555, https://doi.org/10.1038/nclimate2605, 2015.
Delworth, T. L. and Dixon, K. W.: Have anthropogenic aerosols delayed a
greenhouse gas-induced weakening of the North Atlantic thermohaline
circulation?, Geophys. Res. Lett., 33, L02606, https://doi.org/10.1029/2005GL024980, 2006.
Deng, J., Dai, A., and Xu, H.: Nonlinear Climate Responses to Increasing CO2
and Anthropogenic Aerosols Simulated by CESM1, J. Clim., 33, 281–301,
https://doi.org/10.1175/JCLI-D-19-0195.1, 2019.
Deser, C., Phillips, A. S., Simpson, I. R., Rosenbloom, N., Coleman, D.,
Lehner, F., Pendergrass, A. G., DiNezio, P., and Stevenson, S.: Isolating
the Evolving Contributions of Anthropogenic Aerosols and Greenhouse Gases: A
New CESM1 Large Ensemble Community Resource, J. Climate, 33, 7835–7858,
https://doi.org/10.1175/JCLI-D-20-0123.1, 2020 (data available at: https://www.cesm.ucar.edu/working_groups/CVC/simulations/cesm1-single_forcing_le.html, last access: 15 December 2021).
Ding, Q., Schweiger, A., L'Heureux, M., Steig, E. J., Battisti, D. S.,
Johnson, N. C., Blanchard-Wrigglesworth, E., Po-Chedley, S., Zhang, Q.,
Harnos, K., Bushuk, M., Markle, B., and Baxter, I.: Fingerprints of internal
drivers of Arctic sea ice loss in observations and model simulations, Nat.
Geosci., 12, 28–33, https://doi.org/10.1038/s41561-018-0256-8, 2019.
Dong, B., Wilcox, L. J., Highwood, E. J., and Sutton, R. T.: Impacts of
recent decadal changes in Asian aerosols on the East Asian summer monsoon:
roles of aerosol–radiation and aerosol–cloud interactions, Clim. Dynam., 53,
3235–3256, https://doi.org/10.1007/s00382-019-04698-0, 2019.
Dong, L. and McPhaden, M. J.: The role of external forcing and internal
variability in regulating global mean surface temperatures on decadal
timescales, Environ. Res. Lett., 12, 034011,
https://doi.org/10.1088/1748-9326/aa5dd8, 2017.
Dong, L., Zhou, T., and Chen, X.: Changes of Pacific decadal variability in
the twentieth century driven by internal variability, greenhouse gases, and
aerosols, Geophys. Res. Lett., 41, 8570–8577, https://doi.org/10.1002/2014GL062269, 2014.
Fiedler, S. and Putrasahan, D.: How Does the North Atlantic SST Pattern
Respond to Anthropogenic Aerosols in the 1970s and 2000s?, Geophys. Res.
Lett., 48, e2020GL092142, https://doi.org/10.1029/2020GL092142, 2021.
Fiedler, S., Stevens, B., and Mauritsen, T.: On the sensitivity of
anthropogenic aerosol forcing to model-internal variability and
parameterizing a Twomey effect, J. Adv. Model. Earth Syst., 9, 1325–1341, https://doi.org/10.1002/2017MS000932, 2017.
Gillett, N. P., Shiogama, H., Funke, B., Hegerl, G., Knutti, R., Matthes,
K., Santer, B. D., Stone, D., and Tebaldi, C.: The Detection and Attribution
Model Intercomparison Project (DAMIP v1.0) contribution to CMIP6, Geosci.
Model Dev., 9, 3685–3697, https://doi.org/10.5194/gmd-9-3685-2016, 2016.
Hassan, T., Allen, R. J., Liu, W., and Randles, C. A.: Anthropogenic aerosol
forcing of the Atlantic meridional overturning circulation and the
associated mechanisms in CMIP6 models, 21, 5821–5846,
https://doi.org/10.5194/acp-21-5821-2021, 2021.
Hilgenbrink, C. C. and Hartmann, D. L.: The Response of Hadley Circulation
Extent to an Idealized Representation of Poleward Ocean Heat Transport in an
Aquaplanet GCM, J. Clim., 31, 9753–9770,
https://doi.org/10.1175/JCLI-D-18-0324.1, 2018.
Hua, W., Dai, A., and Qin, M.: Contributions of Internal Variability and
External Forcing to the Recent Pacific Decadal Variations, Geophys. Res.
Lett., 45, 7084–7092, https://doi.org/10.1029/2018GL079033, 2018.
Hua, W., Dai, A., Zhou, L., Qin, M., and Chen, H.: An Externally Forced
Decadal Rainfall Seesaw Pattern Over the Sahel and Southeast Amazon,
Geophys. Res. Lett., 46, 923–932, https://doi.org/10.1029/2018GL081406,
2019.
Hurrell, J. W., Holland, M. M., Gent, P. R., Ghan, S., Kay, J. E., Kushner,
P. J., Lamarque, J.-F., Large, W. G., Lawrence, D., Lindsay, K., Lipscomb,
W. H., Long, M. C., Mahowald, N., Marsh, D. R., Neale, R. B., Rasch, P.,
Vavrus, S., Vertenstein, M., Bader, D., Collins, W. D., Hack, J. J., Kiehl,
J., and Marshall, S.: The Community Earth System Model: A Framework for
Collaborative Research, B. Am. Meteorol. Soc., 94, 1339–1360,
https://doi.org/10.1175/BAMS-D-12-00121.1, 2013.
Hwang, Y. T., Frierson, D. M. W., and Kang, S. M.:
Anthropogenic sulfate aerosol and the southward shift of tropical precipitation in
the late 20th century, Geophys. Res. Lett., 40, 2845–2850,
https://doi.org/10.1002/grl.50502, 2013.
IPCC: Summary for Policymakers, in
Global Warming of 1.5∘C. An IPCC Special Report on the impacts of global
warming of 1.5∘C above pre-industrial levels and related global greenhouse gas
emission pathways, in the context of strengthening the global response to the
threat of climate change, sustainable development, and efforts to eradicate
poverty, Tech. rep., edited by: Masson-Delmotte, V., Zhai, P., Pörtner, H.-O., Roberts, D.,
Skea, J., Shukla, P. R., Pirani, A., Moufouma-Okia, W., Péan, C., Pidcock, R.,
Connors, S., Matthews, J. B. R., Chen, Y., Zhou, X., Gomis, M. I., Lonnoy, E.,
Maycock, T., Tignor, M., and Waterfield, T., World Meteorological
Organization, Geneva, Switzerland, 32 pp., 2018.
Jacobson, M. Z.: Investigating cloud absorption effects: Global absorption
properties of black carbon, tar balls, and soil dust in clouds and aerosols,
J. Geophys. Res.-Atmos., 117, D06205, https://doi.org/10.1029/2011JD017218, 2012.
Kang, S. M., Xie, S.-P., Deser, C., and Xiang, B.: Zonal mean and shift
modes of historical climate response to evolving aerosol distribution, Sci.
Bull., 66, 2405–2411, https://doi.org/10.1016/j.scib.2021.07.013, 2021.
Kaufmann, R. K., Kauppi, H., Mann, M. L., and Stock, J. H.: Reconciling
anthropogenic climate change with observed temperature 1998–2008, P.
Natl. Acad. Sci. USA, 108, 11790–11793,
https://doi.org/10.1073/pnas.1102467108, 2011.
Kay, J. E., Deser, C., Phillips, A., Mai, A., Hannay, C., Strand, G.,
Arblaster, J. M., Bates, S. C., Danabasoglu, G., Edwards, J., Holland, M.,
Kushner, P., Lamarque, J.-F., Lawrence, D., Lindsay, K., Middleton, A.,
Munoz, E., Neale, R., Oleson, K., Polvani, L., and Vertenstein, M.: The
Community Earth System Model (CESM) Large Ensemble Project: A Community
Resource for Studying Climate Change in the Presence of Internal Climate
Variability, B. Am. Meteorol. Soc., 96, 1333–1349,
https://doi.org/10.1175/BAMS-D-13-00255.1, 2015 (data available at: https://www.cesm.ucar.edu/projects/community-projects/LENS/data-sets.html, last access: 15 December 2021).
Kirtman, B., Power, S. B., Adedoyin, A. J., Boer, G. J., Bojariu, R.,
Camilloni, I., Doblas-Reyes, F., Fiore, A. M., Kimoto, M., Meehl, G.,
Prather, M., Sarr, A., Schar, C., Sutton, R., van Oldenborgh, G. J., Vecchi,
G., and Wang, H.-J.: Chapter 11 – Near-term climate change: Projections and
predictability, in: Climate Change 2013: The Physical Science Basis, IPCC
Working Group I Contribution to AR5, edited by: IPCC, Cambridge University
Press, Cambridge, United Kingdom and New York, NY, USA, 2013.
Klimont, Z., Smith, S. J., and Cofala, J.: The last decade of global
anthropogenic sulfur dioxide: 2000–2011 emissions, Environ. Res. Lett., 8,
14003, https://doi.org/10.1088/1748-9326/8/1/014003, 2013.
Kodros, J. K., Scott, C. E., Farina, S. C., Lee, Y. H., L'Orange, C., Volckens, J., and Pierce, J. R.: Uncertainties in global aerosols and climate effects due to biofuel emissions, Atmos. Chem. Phys., 15, 8577–8596, https://doi.org/10.5194/acp-15-8577-2015, 2015.
Krishnan, S., Ekman, A. M. L., Hansson, H.-C., Riipinen, I., Lewinschal, A.,
Wilcox, L. J., and Dallafior, T.: The Roles of the Atmosphere and Ocean in
Driving Arctic Warming Due to European Aerosol Reductions, Geophys. Res.
Lett., 47, e2019GL086681, https://doi.org/10.1029/2019GL086681, 2020.
Lelieveld, J., Klingmüller, K., Pozzer, A., Burnett, R. T., Haines, A.,
and Ramanathan, V.: Effects of fossil fuel and total anthropogenic emission
removal on public health and climate, P. Natl. Acad. Sci. USA, 116,
7192–7197, https://doi.org/10.1073/pnas.1819989116, 2019.
Lin, L., Gettelman, A., Xu, Y., and Fu, Q.: Simulated responses of
terrestrial aridity to black carbon and sulfate aerosols, J. Geophys. Res.-Atmos., 121, 785–794, https://doi.org/10.1002/2015JD024100, 2016.
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, https://doi.org/10.1029/2018GL078308, 2018.
Liu, D., He, C., Schwarz, J. P., and Wang, X.: Lifecycle of light-absorbing
carbonaceous aerosols in the atmosphere, npj Clim. Atmos. Sci., 3, 40,
https://doi.org/10.1038/s41612-020-00145-8, 2020.
Liu, X., Easter, R. C., Ghan, S. J., Zaveri, R., Rasch, P., Shi, X., Lamarque, J.-F., Gettelman, A., Morrison, H., Vitt, F., Conley, A., Park, S., Neale, R., Hannay, C., Ekman, A. M. L., Hess, P., Mahowald, N., Collins, W., Iacono, M. J., Bretherton, C. S., Flanner, M. G., and Mitchell, D.: Toward a minimal representation of aerosols in climate models: description and evaluation in the Community Atmosphere Model CAM5, Geosci. Model Dev., 5, 709–739, https://doi.org/10.5194/gmd-5-709-2012, 2012.
Mann, M. E., Rahmstorf, S., Kornhuber, K., Steinman, B. A., Miller, S. K.,
and Coumou, D.: Influence of Anthropogenic Climate Change on Planetary Wave
Resonance and Extreme Weather Events, Sci. Rep., 7, 45242,
https://doi.org/10.1038/srep45242, 2017.
McGregor, S., Timmermann, A., Stuecker, M. F., England, M. H., Merrifield,
M., Jin, F.-F., and Chikamoto, Y.: Recent Walker circulation strengthening
and Pacific cooling amplified by Atlantic warming, Nat. Clim. Change, 4,
888–892, https://doi.org/10.1038/nclimate2330, 2014.
Meehl, G. A., Washington, W. M., Ammann, C. M., Arblaster, J. M., Wigley, T.
M. L., and Tebaldi, C.: Combinations of Natural and Anthropogenic Forcings
in Twentieth-Century Climate, J. Climate, 17, 3721–3727,
https://doi.org/10.1175/1520-0442(2004)017<3721:CONAAF>2.0.CO;2, 2004.
Meehl, G. A., Hu, A., Arblaster, J. M., Fasullo, J., and Trenberth, K. E.:
Externally Forced and Internally Generated Decadal Climate Variability
Associated with the Interdecadal Pacific Oscillation, J. Climate, 26,
7298–7310, https://doi.org/10.1175/JCLI-D-12-00548.1, 2013.
Meehl, G. A., Hu, A., and Teng, H.: Initialized decadal prediction for
transition to positive phase of the Interdecadal Pacific Oscillation, Nat.
Commun., 7, 11718, https://doi.org/10.1038/ncomms11718, 2016.
Menary, M. B., Robson, J., Allan, R. P., Booth, B. B. B., Cassou, C.,
Gastineau, G., Gregory, J., Hodson, D., Jones, C., Mignot, J., Ringer, M.,
Sutton, R., Wilcox, L., and Zhang, R.: Aerosol-Forced AMOC Changes in CMIP6
Historical Simulations, Geophys. Res. Lett., 47, e2020GL088166, https://doi.org/10.1029/2020GL088166, 2020.
Ming, Y. and Ramaswamy, V.: A Model Investigation of Aerosol-Induced Changes
in Tropical Circulation, J. Climate, 24, 5125–5133,
https://doi.org/10.1175/2011JCLI4108.1, 2011.
Morrison, H. and Gettelman, A.: A New Two-Moment Bulk Stratiform Cloud
Microphysics Scheme in the Community Atmosphere Model, Version 3 (CAM3),
Part I: Description and Numerical Tests, J. Climate, 21, 3642–3659,
https://doi.org/10.1175/2008JCLI2105.1, 2008.
Oudar, T., Kushner, P. J., Fyfe, J. C., and Sigmond, M.: No Impact of
Anthropogenic Aerosols on Early 21st Century Global Temperature Trends in a
Large Initial-Condition Ensemble, Geophys. Res. Lett., 45, 9245–9252, https://doi.org/10.1029/2018GL078841, 2018.
Persad, G. G. and Caldeira, K.: Divergent global-scale temperature effects
from identical aerosols emitted in different regions, Nat. Commun., 9, 3289,
https://doi.org/10.1038/s41467-018-05838-6, 2018.
Penner, J. E., Andreae, M. O., Annegarn, H., Barrie, L., Feichter, J., Hegg,
D., and Pitari, G.: Aerosols, their direct and indirect effects, In Climate
Change 2001: The Scientific Basis. Contribution of Working Group I to the
Third Assessment Report of the Intergovernmental Panel on Climate Change,
Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, 289–348, 2001.
Qin, M., Dai, A., and Hua, W.: Aerosol-forced multidecadal variations across
all ocean basins in models and observations since 1920, Sci. Adv., 6,
eabb0425, https://doi.org/10.1126/sciadv.abb0425, 2020.
Salzmann, M.: Global warming without global mean precipitation increase?,
Sci. Adv., 2, e1501572, https://doi.org/10.1126/sciadv.1501572, 2016.
Samset, B. H., Myhre, G., Forster, P. M., Hodnebrog, Ø., Andrews, T.,
Faluvegi, G., Fläschner, D., Kasoar, M., Kharin, V., Kirkevåg, A.,
Lamarque, J.-F., Olivié, D., Richardson, T., Shindell, D., Shine, K. P.,
Takemura, T., and Voulgarakis, A.: Fast and slow precipitation responses to
individual climate forcers: A PDRMIP multimodel study, Geophys. Res. Lett.,
43, 2782–2791, https://doi.org/10.1002/2016GL068064, 2016.
Samset, B. H., Stjern, C. W., Andrews, E., Kahn, R. A., Myhre, G., Schulz,
M., and Schuster, G. L.: Aerosol Absorption: Progress Towards Global and
Regional Constraints, Curr. Clim. Chang. Reports, 4, 65–83,
https://doi.org/10.1007/s40641-018-0091-4, 2018.
Samset, B. H., Lund, M. T., Bollasina, M., Myhre, G., and Wilcox, L.:
Emerging Asian aerosol patterns, Nat. Geosci., 12, 582–584,
https://doi.org/10.1038/s41561-019-0424-5, 2019.
Seo, J., Kang, S. M., and Frierson, D. M. W.: Sensitivity of
Intertropical Convergence Zone Movement to the Latitudinal Position of Thermal
Forcing, J. Climate, 27, 3035–3042,
https://doi.org/10.1175/JCLI-D-13-00691.1, 2014.
Shen, Z. and Ming, Y.: The Influence of Aerosol Absorption on the
Extratropical Circulation, J. Clim., 31, 5961–5975,
https://doi.org/10.1175/JCLI-D-17-0839.1, 2018.
Shindell, D. T. and Faluvegi, G.: Climate response to regional radiative
forcing during the twentieth century, Nat. Geosci., 2, 294–300,
https://doi.org/10.1038/ngeo473, 2009.
Shindell, D. T., Faluvegi, G., Rotstayn, L., and Milly, G.: Spatial patterns
of radiative forcing and surface temperature response, J. Geophys. Res.-Atmos., 120, 5385–5403, https://doi.org/10.1002/2014JD022752, 2015.
Smith, D. M., Booth, B. B. B., Dunstone, N. J., Eade, R., Hermanson, L.,
Jones, G. S., Scaife, A. A., Sheen, K. L., and Thompson, V.: Role of
volcanic and anthropogenic aerosols in the recent global surface warming
slowdown, Nat. Clim. Change, 6, 936–940,
https://doi.org/10.1038/nclimate3058, 2016.
Song, F., Leung, L. R., Lu, J., Dong, L., Zhou, W., Harrop, B., and Qian,
Y.: Emergence of seasonal delay of tropical rainfall during 1979–2019, Nat.
Clim. Change, 11, 605–612, https://doi.org/10.1038/s41558-021-01066-x,
2021.
Swart, N. C., Fyfe, J. C., Hawkins, E., Kay, J. E., and Jahn, A.: Influence
of internal variability on Arctic sea-ice trends, Nat. Clim. Change, 5,
86–89, https://doi.org/10.1038/nclimate2483, 2015.
Takahashi, C. and Watanabe, M.: Pacific trade winds accelerated by aerosol
forcing over the past two decades, Nat. Clim. Change, 6, 768–772,
https://doi.org/10.1038/nclimate2996, 2016.
Taylor, K. E., Stouffer, R. J., and Meehl, G. A.: An Overview of CMIP5 and
the Experiment Design, B. Am. Meteorol. Soc., 93, 485–498,
https://doi.org/10.1175/BAMS-D-11-00094.1, 2012.
Verma, T., Saravanan, R., Chang, P., and Mahajan, S.: Tropical Pacific Ocean
Dynamical Response to Short-Term Sulfate Aerosol Forcing, J. Clim., 32,
8205–8221, https://doi.org/10.1175/JCLI-D-19-0050.1, 2019.
Wang, H., Xie, S.-P., and Liu, Q.: Comparison of Climate Response to
Anthropogenic Aerosol versus Greenhouse Gas Forcing: Distinct Patterns, J.
Clim., 29, 5175–5188, https://doi.org/10.1175/JCLI-D-16-0106.1, 2016.
Wang, H., Xie, S.-P., Zheng, X.-T., Kosaka, Y., Xu, Y., and Geng, Y.-F.:
Dynamics of Southern Hemisphere Atmospheric Circulation Response to
Anthropogenic Aerosol Forcing, Geophys. Res. Lett., 47, e2020GL089919,
https://doi.org/10.1029/2020GL089919, 2020.
Wang, Y., Jiang, J. H., and Su, H.: Atmospheric responses to the
redistribution of anthropogenic aerosols, J. Geophys. Res.-Atmos., 120,
9625–9641, https://doi.org/10.1002/2015JD023665, 2015.
Wang, Y., Le, T., Chen, G., Yung, Y. L., Su, H., Seinfeld, J. H., and Jiang,
J. H.: Reduced European aerosol emissions suppress winter extremes over
northern Eurasia, Nat. Clim. Change, 10, 225–230, https://doi.org/10.1038/s41558-020-0693-4, 2020.
Wang, Z., Lin, L., Yang, M., Xu, Y., and Li, J.: Disentangling fast and slow responses of the East Asian summer monsoon to reflecting and absorbing aerosol forcings, Atmos. Chem. Phys., 17, 11075–11088, https://doi.org/10.5194/acp-17-11075-2017, 2017.
Wang, Z., Lin, L., Xu, Y., Che, H., Zhang, X., Zhang, H., Dong, W.,
Wang, C.,
Gui, K., and
Xie, B.: Incorrect Asian aerosols affecting the attribution and projection of
regional climate change in CMIP6 models, Npj Clim. Atmos. Sci.,
4, 2, https://doi.org/10.1038/s41612-020-00159-2, 2021.
Watanabe, M. and Tatebe, H.: Reconciling roles of sulphate aerosol forcing
and internal variability in Atlantic multidecadal climate changes, Clim.
Dynam., 53, 4651–4665, https://doi.org/10.1007/s00382-019-04811-3, 2019.
Xie, S.-P. and Kosaka, Y.: What Caused the Global Surface Warming Hiatus of
1998–2013?, Curr. Clim. Chang. Reports, 3, 128–140,
https://doi.org/10.1007/s40641-017-0063-0, 2017.
Xie, S.-P., Lu, B., and Xiang, B.: Similar spatial patterns of climate
responses to aerosol and greenhouse gas changes, Nat. Geosci., 6, 828–832,
https://doi.org/10.1038/ngeo1931, 2013.
Xu, Y. and Xie, S.-P.: Ocean mediation of tropospheric response to reflecting and absorbing aerosols, Atmos. Chem. Phys., 15, 5827–5833, https://doi.org/10.5194/acp-15-5827-2015, 2015.
Xu, Y., Wu, X., Kumar, R., Barth,
M., Diao, C., Gao, M., Lin, L., Jones, B., and Meehl, G. A.: Substantial Increase in
the Joint Occurrence and Human Exposure of Heatwave and High‐PM Hazards
Over South Asia in the Mid‐21st Century, AGU Advances, 1, e2019AV000103,
https://doi.org/10.1029/2019AV000103, 2020.
Xu, Y., Ramanathan, V., and Washington, W. M.: Observed high-altitude warming and snow cover retreat over Tibet and the Himalayas enhanced by black carbon aerosols, Atmos. Chem. Phys., 16, 1303–1315, https://doi.org/10.5194/acp-16-1303-2016, 2016.
Xu, Y., Lamarque, J. F., and Sanderson, B. M.: The importance of aerosol
scenarios in projections of future heat extremes, Clim. Change, 146, 393–406, https://doi.org/10.1007/s10584-015-1565-1, 2018.
Zhao, A., Bollasina, M. A., and Stevenson, D. S.: Strong Influence of
Aerosol Reductions on Future Heatwaves, Geophys. Res. Lett., 46, 4913–4923,
https://doi.org/10.1029/2019GL082269, 2019.
Zheng, Y., Zhang, Q., Tong, D., Davis, S. J., and Caldeira, K.: Climate
effects of China's efforts to improve its air quality, Environ. Res. Lett.,
15, 104052, https://doi.org/10.1088/1748-9326/ab9e21, 2020.
Short summary
Anthropogenic aerosol (AA) emission has shown a zonal redistribution since the 1980s, with a decline in the Western Hemisphere (WH) high latitudes and an increase in the Eastern Hemisphere (EH) low latitudes. This study compares the role of zonally asymmetric forcings affecting the climate. The WH aerosol reduction dominates the poleward shift of the Hadley cell and the North Pacific warming, while the EH AA forcing is largely confined to the emission domain and induces local cooling responses.
Anthropogenic aerosol (AA) emission has shown a zonal redistribution since the 1980s, with a...
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