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Title: Aerosol Impacts on Mesoscale Convective Systems Forming under Different Vertical Wind Shear Conditions

Abstract

Following our previous study of wind shear effect on mesoscale convective system (MCS) organization under a clean atmospheric condition using the Weather Research and Forecasting model coupled with Spectral-Bin Microphysics, we conduct sensitivity simulations by increasing cloud condensation nuclei (CCN) concentration and investigate aerosol impacts on MCSs forming under different wind shear conditions. We find that, aerosols induce stronger updrafts and downdrafts in all MCSs. The stronger updrafts and enlarged convective core area contribute to larger vertical mass fluxes and enhance precipitation, indicating convective invigoration. Increased updraft speed below 8-km altitude mainly results from enhanced condensational heating, and increased water loading effect is not large enough to overcome the increase in thermal buoyancy. Interestingly, above 8-km altitude we see reduced updraft speed by the increased aerosols due to reduced vertical pressure perturbation gradient force, and weakened depositional growth due to competition of water vapor by enhanced condensation. The accumulated rainfall and mean rain rate are increased, with an increased occurrence frequency of heavy rain. The increase of rain rate is seen in both convective and stratiform regions, with a more significant increase in convective rain rate. In general, we see a higher frequency of deep convective cloud in the pollutedmore » condition because of invigorated convection, and more stratiform/anvil clouds, but a lower frequency of shallow warm clouds. The unanimously invigorated MCSs by aerosols under various wind shear conditions revealed by this study has an important implication in weather and climate at warm and humid regions that are influenced by pollution.« less

Authors:
 [1];  [2];  [3];  [4]
  1. UNIVERSITY PROGRAMS
  2. BATTELLE (PACIFIC NW LAB)
  3. Nanjing University of Information Science and Technology
  4. NANJING UNIVERSITY
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1605104
Report Number(s):
[PNNL-SA-140094]
Grant/Contract Number:  
[AC05-76RL01830]
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Geophysical Research: Atmospheres
Additional Journal Information:
[ Journal Volume: 125; Journal Issue: 3]
Country of Publication:
United States
Language:
English

Citation Formats

Chen, Qian, Fan, Jiwen, Yin, Y, and Han, Bin. Aerosol Impacts on Mesoscale Convective Systems Forming under Different Vertical Wind Shear Conditions. United States: N. p., 2020. Web. doi:10.1029/2018JD030027.
Chen, Qian, Fan, Jiwen, Yin, Y, & Han, Bin. Aerosol Impacts on Mesoscale Convective Systems Forming under Different Vertical Wind Shear Conditions. United States. doi:10.1029/2018JD030027.
Chen, Qian, Fan, Jiwen, Yin, Y, and Han, Bin. Sun . "Aerosol Impacts on Mesoscale Convective Systems Forming under Different Vertical Wind Shear Conditions". United States. doi:10.1029/2018JD030027.
@article{osti_1605104,
title = {Aerosol Impacts on Mesoscale Convective Systems Forming under Different Vertical Wind Shear Conditions},
author = {Chen, Qian and Fan, Jiwen and Yin, Y and Han, Bin},
abstractNote = {Following our previous study of wind shear effect on mesoscale convective system (MCS) organization under a clean atmospheric condition using the Weather Research and Forecasting model coupled with Spectral-Bin Microphysics, we conduct sensitivity simulations by increasing cloud condensation nuclei (CCN) concentration and investigate aerosol impacts on MCSs forming under different wind shear conditions. We find that, aerosols induce stronger updrafts and downdrafts in all MCSs. The stronger updrafts and enlarged convective core area contribute to larger vertical mass fluxes and enhance precipitation, indicating convective invigoration. Increased updraft speed below 8-km altitude mainly results from enhanced condensational heating, and increased water loading effect is not large enough to overcome the increase in thermal buoyancy. Interestingly, above 8-km altitude we see reduced updraft speed by the increased aerosols due to reduced vertical pressure perturbation gradient force, and weakened depositional growth due to competition of water vapor by enhanced condensation. The accumulated rainfall and mean rain rate are increased, with an increased occurrence frequency of heavy rain. The increase of rain rate is seen in both convective and stratiform regions, with a more significant increase in convective rain rate. In general, we see a higher frequency of deep convective cloud in the polluted condition because of invigorated convection, and more stratiform/anvil clouds, but a lower frequency of shallow warm clouds. The unanimously invigorated MCSs by aerosols under various wind shear conditions revealed by this study has an important implication in weather and climate at warm and humid regions that are influenced by pollution.},
doi = {10.1029/2018JD030027},
journal = {Journal of Geophysical Research: Atmospheres},
number = [3],
volume = [125],
place = {United States},
year = {2020},
month = {2}
}

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Works referenced in this record:

Relative influence of meteorological conditions and aerosols on the lifetime of mesoscale convective systems
journal, June 2016

  • Chakraborty, Sudip; Fu, Rong; Massie, Steven T.
  • Proceedings of the National Academy of Sciences, Vol. 113, Issue 27
  • DOI: 10.1073/pnas.1601935113

Roles of wind shear at different vertical levels: Cloud system organization and properties: EFFECT OF WIND SHEAR ON MCS
journal, July 2015

  • Chen, Qian; Fan, Jiwen; Hagos, Samson
  • Journal of Geophysical Research: Atmospheres, Vol. 120, Issue 13
  • DOI: 10.1002/2015JD023253

How do changes in warm-phase microphysics affect deep convective clouds?
journal, January 2017

  • Chen, Qian; Koren, Ilan; Altaratz, Orit
  • Atmospheric Chemistry and Physics, Vol. 17, Issue 15
  • DOI: 10.5194/acp-17-9585-2017

Cloud‐resolving model intercomparison of an MC3E squall line case: Part I—Convective updrafts
journal, September 2017

  • Fan, Jiwen; Han, Bin; Varble, Adam
  • Journal of Geophysical Research: Atmospheres, Vol. 122, Issue 17
  • DOI: 10.1002/2017JD026622

Aerosol impacts on clouds and precipitation in eastern China: Results from bin and bulk microphysics: AEROSOL IMPACTS ON CLOUDS
journal, January 2012

  • Fan, Jiwen; Leung, L. Ruby; Li, Zhanqing
  • Journal of Geophysical Research: Atmospheres, Vol. 117, Issue D16
  • DOI: 10.1029/2011JD016537

Microphysical effects determine macrophysical response for aerosol impacts on deep convective clouds
journal, November 2013

  • Fan, J.; Leung, L. R.; Rosenfeld, D.
  • Proceedings of the National Academy of Sciences, Vol. 110, Issue 48
  • DOI: 10.1073/pnas.1316830110

Potential aerosol indirect effects on atmospheric circulation and radiative forcing through deep convection: AEROSOL-DEEP CONVECTION INTERACTIONS
journal, May 2012

  • Fan, Jiwen; Rosenfeld, Daniel; Ding, Yanni
  • Geophysical Research Letters, Vol. 39, Issue 9
  • DOI: 10.1029/2012GL051851

Substantial convection and precipitation enhancements by ultrafine aerosol particles
journal, January 2018


Review of Aerosol–Cloud Interactions: Mechanisms, Significance, and Challenges
journal, November 2016

  • Fan, Jiwen; Wang, Yuan; Rosenfeld, Daniel
  • Journal of the Atmospheric Sciences, Vol. 73, Issue 11
  • DOI: 10.1175/JAS-D-16-0037.1

Dominant role by vertical wind shear in regulating aerosol effects on deep convective clouds
journal, January 2009

  • Fan, Jiwen; Yuan, Tianle; Comstock, Jennifer M.
  • Journal of Geophysical Research, Vol. 114, Issue D22
  • DOI: 10.1029/2009JD012352

Effects of aerosols and relative humidity on cumulus clouds
journal, January 2007

  • Fan, Jiwen; Zhang, Renyi; Li, Guohui
  • Journal of Geophysical Research, Vol. 112, Issue D14
  • DOI: 10.1029/2006JD008136

Structure and Evolution of Mesoscale Convective Systems: Sensitivity to Cloud Microphysics in Convection‐Permitting Simulations Over the United States
journal, July 2018

  • Feng, Zhe; Leung, L. Ruby; Houze, Robert A.
  • Journal of Advances in Modeling Earth Systems, Vol. 10, Issue 7
  • DOI: 10.1029/2018MS001305

Aerosol-induced changes in the vertical structure of precipitation: a perspective of TRMM precipitation radar
journal, January 2018


Cloud‐Resolving Model Intercomparison of an MC3E Squall Line Case: Part II. Stratiform Precipitation Properties
journal, January 2019

  • Han, Bin; Fan, Jiwen; Varble, Adam
  • Journal of Geophysical Research: Atmospheres, Vol. 124, Issue 2
  • DOI: 10.1029/2018JD029596

Impact of aerosols on precipitation from deep convective clouds in eastern China: IMPACT OF AEROSOLS ON PRECIPITATION
journal, August 2016

  • Jiang, Mengjiao; Li, Zhanqing; Wan, Bingcheng
  • Journal of Geophysical Research: Atmospheres, Vol. 121, Issue 16
  • DOI: 10.1002/2015JD024246

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

Notes on state-of-the-art investigations of aerosol effects on precipitation: a critical review
journal, January 2009


Representation of microphysical processes in cloud-resolving models: Spectral (bin) microphysics versus bulk parameterization: BIN VS BULK
journal, May 2015

  • Khain, A. P.; Beheng, K. D.; Heymsfield, A.
  • Reviews of Geophysics, Vol. 53, Issue 2
  • DOI: 10.1002/2014RG000468

Are simulated aerosol-induced effects on deep convective clouds strongly dependent on saturation adjustment?
journal, January 2012

  • Lebo, Z. J.; Morrison, H.; Seinfeld, J. H.
  • Atmospheric Chemistry and Physics, Vol. 12, Issue 20
  • DOI: 10.5194/acp-12-9941-2012

The dependence of aerosol effects on clouds and precipitation on cloud-system organization, shear and stability
journal, January 2008

  • Lee, Seoung Soo; Donner, Leo J.; Phillips, Vaughan T. J.
  • Journal of Geophysical Research, Vol. 113, Issue D16
  • DOI: 10.1029/2007JD009224

Implementation of a two-moment bulk microphysics scheme to the WRF model to investigate aerosol-cloud interaction
journal, January 2008

  • Li, Guohui; Wang, Yuan; Zhang, Renyi
  • Journal of Geophysical Research, Vol. 113, Issue D15
  • DOI: 10.1029/2007JD009361

Multi-layer arctic mixed-phase clouds simulated by a cloud-resolving model: Comparison with ARM observations and sensitivity experiments
journal, January 2008

  • Luo, Yali; Xu, Kuan-Man; Morrison, Hugh
  • Journal of Geophysical Research, Vol. 113, Issue D12
  • DOI: 10.1029/2007JD009563

On the robustness of aerosol effects on an idealized supercell storm simulated with a cloud system-resolving model
journal, January 2012


Response of Tropical Deep Convection to Localized Heating Perturbations: Implications for Aerosol-Induced Convective Invigoration
journal, November 2013

  • Morrison, Hugh; Grabowski, Wojciech W.
  • Journal of the Atmospheric Sciences, Vol. 70, Issue 11
  • DOI: 10.1175/JAS-D-13-027.1

Heavy pollution suppresses light rain in China: Observations and modeling
journal, January 2009

  • Qian, Yun; Gong, Daoyi; Fan, Jiwen
  • Journal of Geophysical Research, Vol. 114
  • DOI: 10.1029/2008JD011575

Flood or Drought: How Do Aerosols Affect Precipitation?
journal, September 2008


A Theory for Strong, Long-Lived Squall Lines
journal, February 1988


Aerosol‐induced mechanisms for cumulus congestus growth
journal, September 2015

  • Sheffield, Amanda M.; Saleeby, Stephen M.; Heever, Susan C.
  • Journal of Geophysical Research: Atmospheres, Vol. 120, Issue 17
  • DOI: 10.1002/2015JD023743

Climatological Characterization of Three-Dimensional Storm Structure from Operational Radar and Rain Gauge Data
journal, September 1995


Simultaneous influences of thermodynamics and aerosols on deep convection and lightning in the tropics: THERMODYNAMICS, AEROSOLS, AND CONVECTION
journal, June 2015

  • Stolz, Douglas C.; Rutledge, Steven A.; Pierce, Jeffrey R.
  • Journal of Geophysical Research: Atmospheres, Vol. 120, Issue 12
  • DOI: 10.1002/2014JD023033

Parameterizing deep convection using the assumed probability density function method
journal, January 2015

  • Storer, R. L.; Griffin, B. M.; Höft, J.
  • Geoscientific Model Development, Vol. 8, Issue 1
  • DOI: 10.5194/gmd-8-1-2015

Microphysical Processes Evident in Aerosol Forcing of Tropical Deep Convective Clouds
journal, February 2013

  • Storer, Rachel L.; van den Heever, Susan C.
  • Journal of the Atmospheric Sciences, Vol. 70, Issue 2
  • DOI: 10.1175/JAS-D-12-076.1

Impact of aerosols on convective clouds and precipitation: AEROSOL IMPACT ON CONVECTIVE CLOUDS
journal, April 2012

  • Tao, Wei-Kuo; Chen, Jen-Ping; Li, Zhanqing
  • Reviews of Geophysics, Vol. 50, Issue 2
  • DOI: 10.1029/2011RG000369

Aerosol Indirect Effects on Tropical Convection Characteristics under Conditions of Radiative–Convective Equilibrium
journal, April 2011

  • van den Heever, Susan C.; Stephens, Graeme L.; Wood, Norman B.
  • Journal of the Atmospheric Sciences, Vol. 68, Issue 4
  • DOI: 10.1175/2010JAS3603.1

Distinct effects of anthropogenic aerosols on tropical cyclones
journal, March 2014

  • Wang, Yuan; Lee, Keun-Hee; Lin, Yun
  • Nature Climate Change, Vol. 4, Issue 5
  • DOI: 10.1038/nclimate2144