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Title: Impact of biomass burning aerosols on radiation, clouds, and precipitation over the Amazon: relative importance of aerosol–cloud and aerosol–radiation interactions

Abstract

Biomass burning (BB) aerosols can influence regional and global climate through interactions with radiation, clouds, and precipitation. Here, we investigate the impact of BB aerosols on the energy balance and hydrological cycle over the Amazon Basin during the dry season. We performed simulations with a fully coupled meteorology–chemistry model, the Weather Research and Forecasting model coupled with Chemistry (WRF-Chem), for a range of different BB emission scenarios to explore and characterize nonlinear effects and individual contributions from aerosol–radiation interactions (ARIs) and aerosol–cloud interactions (ACIs). The ARIs of BB aerosols tend to suppress low-level liquid clouds by local warming and increased evaporation and to facilitate the formation of high-level ice clouds by enhancing updrafts and condensation at high altitudes. In contrast, the ACIs of BB aerosol particles tend to enhance the formation and lifetime of low-level liquid clouds by providing more cloud condensation nuclei (CCN) and to suppress the formation of high-level ice clouds by reducing updrafts and condensable water vapor at high altitudes (>8 km). For scenarios representing the lower and upper limits of BB emission estimates for recent years (2002–2016), we obtained total regional BB aerosol radiative forcings of –0.2 and 1.5 W m–2, respectively, showing that the influencemore » of BB aerosols on the regional energy balance can range from modest cooling to strong warming. We find that ACIs dominate at low BB emission rates and low aerosol optical depth (AOD), leading to an increased cloud liquid water path (LWP) and negative radiative forcing, whereas ARIs dominate at high BB emission rates and high AOD, leading to a reduction of LWP and positive radiative forcing. In all scenarios, BB aerosols led to a decrease in the frequency of occurrence and rate of precipitation, caused primarily by ACI effects at low aerosol loading and by ARI effects at high aerosol loading. The dependence of precipitation reduction on BB aerosol loading is greater in a strong convective regime than under weakly convective conditions. Overall, our results show that ACIs tend to saturate at high aerosol loading, whereas the strength of ARIs continues to increase and plays a more important role in highly polluted episodes and regions. This should hold not only for BB aerosols over the Amazon, but also for other light-absorbing aerosols such as fossil fuel combustion aerosols in industrialized and densely populated areas. The importance of ARIs at high aerosol loading highlights the need for accurately characterizing aerosol optical properties in the investigation of aerosol effects on clouds, precipitation, and climate.« less

Authors:
 [1]; ORCiD logo [1];  [1];  [1];  [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [1]; ORCiD logo [1]
  1. Max Planck Society, Mainz (Germany). Max Planck Inst. for Chemistry
  2. Univ. of Sao Paulo (Brazil)
  3. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  4. Max Planck Society, Mainz (Germany). Max Planck Inst. for Chemistry; Univ. of California, San Diego, CA (United States). Scripps Inst. of Oceanography
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER); German Federal Ministry of Education and Research (BMBF); Brazilian Ministério da Ciência, Tecnologia e Inovação (MCTI)
OSTI Identifier:
1721686
Report Number(s):
PNNL-SA-153797
Journal ID: ISSN 1680-7324
Grant/Contract Number:  
AC05-76RL01830; 01LB1001A; 01LK1602B; 01.11.01248.00
Resource Type:
Accepted Manuscript
Journal Name:
Atmospheric Chemistry and Physics (Online)
Additional Journal Information:
Journal Name: Atmospheric Chemistry and Physics (Online); Journal Volume: 20; Journal Issue: 21; Journal ID: ISSN 1680-7324
Publisher:
European Geosciences Union
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES

Citation Formats

Liu, Lixia, Cheng, Yafang, Wang, Siwen, Wei, Chao, Pöhlker, Mira L., Pöhlker, Christopher, Artaxo, Paulo, Shrivastava, Manish, Andreae, Meinrat O., Pöschl, Ulrich, and Su, Hang. Impact of biomass burning aerosols on radiation, clouds, and precipitation over the Amazon: relative importance of aerosol–cloud and aerosol–radiation interactions. United States: N. p., 2020. Web. https://doi.org/10.5194/acp-20-13283-2020.
Liu, Lixia, Cheng, Yafang, Wang, Siwen, Wei, Chao, Pöhlker, Mira L., Pöhlker, Christopher, Artaxo, Paulo, Shrivastava, Manish, Andreae, Meinrat O., Pöschl, Ulrich, & Su, Hang. Impact of biomass burning aerosols on radiation, clouds, and precipitation over the Amazon: relative importance of aerosol–cloud and aerosol–radiation interactions. United States. https://doi.org/10.5194/acp-20-13283-2020
Liu, Lixia, Cheng, Yafang, Wang, Siwen, Wei, Chao, Pöhlker, Mira L., Pöhlker, Christopher, Artaxo, Paulo, Shrivastava, Manish, Andreae, Meinrat O., Pöschl, Ulrich, and Su, Hang. Tue . "Impact of biomass burning aerosols on radiation, clouds, and precipitation over the Amazon: relative importance of aerosol–cloud and aerosol–radiation interactions". United States. https://doi.org/10.5194/acp-20-13283-2020. https://www.osti.gov/servlets/purl/1721686.
@article{osti_1721686,
title = {Impact of biomass burning aerosols on radiation, clouds, and precipitation over the Amazon: relative importance of aerosol–cloud and aerosol–radiation interactions},
author = {Liu, Lixia and Cheng, Yafang and Wang, Siwen and Wei, Chao and Pöhlker, Mira L. and Pöhlker, Christopher and Artaxo, Paulo and Shrivastava, Manish and Andreae, Meinrat O. and Pöschl, Ulrich and Su, Hang},
abstractNote = {Biomass burning (BB) aerosols can influence regional and global climate through interactions with radiation, clouds, and precipitation. Here, we investigate the impact of BB aerosols on the energy balance and hydrological cycle over the Amazon Basin during the dry season. We performed simulations with a fully coupled meteorology–chemistry model, the Weather Research and Forecasting model coupled with Chemistry (WRF-Chem), for a range of different BB emission scenarios to explore and characterize nonlinear effects and individual contributions from aerosol–radiation interactions (ARIs) and aerosol–cloud interactions (ACIs). The ARIs of BB aerosols tend to suppress low-level liquid clouds by local warming and increased evaporation and to facilitate the formation of high-level ice clouds by enhancing updrafts and condensation at high altitudes. In contrast, the ACIs of BB aerosol particles tend to enhance the formation and lifetime of low-level liquid clouds by providing more cloud condensation nuclei (CCN) and to suppress the formation of high-level ice clouds by reducing updrafts and condensable water vapor at high altitudes (>8 km). For scenarios representing the lower and upper limits of BB emission estimates for recent years (2002–2016), we obtained total regional BB aerosol radiative forcings of –0.2 and 1.5 W m–2, respectively, showing that the influence of BB aerosols on the regional energy balance can range from modest cooling to strong warming. We find that ACIs dominate at low BB emission rates and low aerosol optical depth (AOD), leading to an increased cloud liquid water path (LWP) and negative radiative forcing, whereas ARIs dominate at high BB emission rates and high AOD, leading to a reduction of LWP and positive radiative forcing. In all scenarios, BB aerosols led to a decrease in the frequency of occurrence and rate of precipitation, caused primarily by ACI effects at low aerosol loading and by ARI effects at high aerosol loading. The dependence of precipitation reduction on BB aerosol loading is greater in a strong convective regime than under weakly convective conditions. Overall, our results show that ACIs tend to saturate at high aerosol loading, whereas the strength of ARIs continues to increase and plays a more important role in highly polluted episodes and regions. This should hold not only for BB aerosols over the Amazon, but also for other light-absorbing aerosols such as fossil fuel combustion aerosols in industrialized and densely populated areas. The importance of ARIs at high aerosol loading highlights the need for accurately characterizing aerosol optical properties in the investigation of aerosol effects on clouds, precipitation, and climate.},
doi = {10.5194/acp-20-13283-2020},
journal = {Atmospheric Chemistry and Physics (Online)},
number = 21,
volume = 20,
place = {United States},
year = {2020},
month = {11}
}

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  • Huang, Chu-Chun; Chen, Shu-Hua; Lin, Yi-Chiu
  • Monthly Weather Review, Vol. 147, Issue 9
  • DOI: 10.1175/MWR-D-18-0459.1

Contrasting effects on deep convective clouds by different types of aerosols
journal, September 2018


Parameterization of cold-season processes in the MAPS land-surface scheme
journal, February 2000

  • Smirnova, Tatiana G.; Brown, John M.; Benjamin, Stanley G.
  • Journal of Geophysical Research: Atmospheres, Vol. 105, Issue D3
  • DOI: 10.1029/1999JD901047

A new lumped structure photochemical mechanism for large-scale applications
journal, December 1999

  • Zaveri, Rahul A.; Peters, Leonard K.
  • Journal of Geophysical Research: Atmospheres, Vol. 104, Issue D23
  • DOI: 10.1029/1999JD900876

HTAP_v2.2: a mosaic of regional and global emission grid maps for 2008 and 2010 to study hemispheric transport of air pollution
journal, January 2015

  • Janssens-Maenhout, G.; Crippa, M.; Guizzardi, D.
  • Atmospheric Chemistry and Physics, Vol. 15, Issue 19
  • DOI: 10.5194/acp-15-11411-2015

Aerosol optical properties and related chemical apportionment at Xinken in Pearl River Delta of China
journal, August 2008


Inclusion of biomass burning in WRF-Chem: impact of wildfires on weather forecasts
journal, January 2011

  • Grell, G.; Freitas, S. R.; Stuefer, M.
  • Atmospheric Chemistry and Physics, Vol. 11, Issue 11
  • DOI: 10.5194/acp-11-5289-2011

Aerosol-induced changes of convective cloud anvils produce strong climate warming
journal, January 2010

  • Koren, I.; Remer, L. A.; Altaratz, O.
  • Atmospheric Chemistry and Physics, Vol. 10, Issue 10
  • DOI: 10.5194/acp-10-5001-2010

Aerosol impact on the dynamics and microphysics of deep convective clouds
journal, October 2005

  • Khain, A.; Rosenfeld, D.; Pokrovsky, A.
  • Quarterly Journal of the Royal Meteorological Society, Vol. 131, Issue 611
  • DOI: 10.1256/qj.04.62

Impact of elevated aerosol layer on the cloud macrophysical properties prior to monsoon onset
journal, May 2013


Smoking Rain Clouds over the Amazon
journal, February 2004


A regional climate model study of how biomass burning aerosol impacts land-atmosphere interactions over the Amazon
journal, January 2008

  • Zhang, Yan; Fu, Rong; Yu, Hongbin
  • Journal of Geophysical Research, Vol. 113, Issue D14
  • DOI: 10.1029/2007JD009449

Effect of aerosol on warm convective clouds: Aerosol-cloud-surface flux feedbacks in a new coupled large eddy model
journal, January 2006

  • Jiang, Hongli; Feingold, Graham
  • Journal of Geophysical Research, Vol. 111, Issue D1
  • DOI: 10.1029/2005JD006138

Air quality and human health improvements from reductions in deforestation-related fire in Brazil
journal, September 2015

  • Reddington, C. L.; Butt, E. W.; Ridley, D. A.
  • Nature Geoscience, Vol. 8, Issue 10
  • DOI: 10.1038/ngeo2535

Estimates of global terrestrial isoprene emissions using MEGAN (Model of Emissions of Gases and Aerosols from Nature)
journal, January 2006

  • Guenther, A.; Karl, T.; Harley, P.
  • Atmospheric Chemistry and Physics, Vol. 6, Issue 11
  • DOI: 10.5194/acp-6-3181-2006

Influx of African biomass burning aerosol during the Amazonian dry season through layered transatlantic transport of black carbon-rich smoke
journal, January 2020

  • Holanda, Bruna A.; Pöhlker, Mira L.; Walter, David
  • Atmospheric Chemistry and Physics, Vol. 20, Issue 8
  • DOI: 10.5194/acp-20-4757-2020

Constraining Aging Processes of Black Carbon in the Community Atmosphere Model Using Environmental Chamber Measurements
journal, October 2018

  • Wang, Yuan; Ma, Po‐Lun; Peng, Jianfei
  • Journal of Advances in Modeling Earth Systems, Vol. 10, Issue 10
  • DOI: 10.1029/2018MS001387

Observed Increase of TTL Temperature and Water Vapor in Polluted Clouds over Asia
journal, June 2011

  • Su, Hui; Jiang, Jonathan H.; Liu, Xiaohong
  • Journal of Climate, Vol. 24, Issue 11
  • DOI: 10.1175/2010JCLI3749.1