Aerosols in the E3SM Version 1: New Developments and Their Impacts on Radiative Forcing
Abstract
The new Energy Exascale Earth System Model version 1 (E3SMv1) developed for the U.S. Department of Energy has significant new treatments of aerosols and light-absorbing snow impurities as well as their interactions with clouds and radiation. This study describes seven sets of new aerosol-related treatments (involving emissions, new particle formation, aerosol transport, wet scavenging and resuspension, and snow radiative transfer) and examines how they affect global aerosols and radiative forcing in E3SMv1. Altogether they give a reduced total aerosol radiative forcing (-1.6 W m-2) and sensitivity in cloud liquid water to aerosols, but an increased sensitivity in cloud droplet size to aerosols. A new approach for H2SO4 production/loss largely increases reduces a low bias in small particles concentrations and leads to substantial increases in CCN concentrations and cloud radiative cooling. Emitting secondary organic aerosol (SOA) precursor gases from elevated sources increases the column burden of SOA, contributing substantially to global clear-sky aerosol radiative cooling (-0.15 out of -0.5 W m-2). A new treatment of aerosol resuspension from evaporating precipitation, developed to remedy two shortcomings of the original treatment, produces a modest reduction in aerosols and cloud droplets; its impact depends strongly on the model physics and is much stronger inmore »
- Authors:
-
more »
- Pacific Northwest National Laboratory Richland WA USA
- Pacific Northwest National Laboratory Richland WA USA, Now at Indian Institute of Technology (IIT) Delhi New Delhi India
- Pacific Northwest National Laboratory Richland WA USA, Now at Nanjing University of Information Science and Technology Nanjing China
- Argonne National Laboratory Lemont IL USA
- University of Michigan Ann Arbor MI USA
- University of Wyoming Laramie WY USA, Now at Texas A&,M University College Station TX USA
- Lawrence Livermore National Laboratory Livermore CA USA
- Pacific Northwest National Laboratory Richland WA USA, Now at Gwangju Institute of Science and Technology Gwangju South Korea
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23). Earth System Modeling; USDOE
- OSTI Identifier:
- 1581193
- Alternate Identifier(s):
- OSTI ID: 1581194; OSTI ID: 1599048; OSTI ID: 1602755
- Report Number(s):
- PNNL-SA-146124
Journal ID: ISSN 1942-2466
- Grant/Contract Number:
- AC02-06CH11357; AC02‐05CH11231; NRF_2017R1A2b4007480; AC52‐07NA27344; AC05‐76RL01830; AC05-76RL01830
- Resource Type:
- Published Article
- Journal Name:
- Journal of Advances in Modeling Earth Systems
- Additional Journal Information:
- Journal Name: Journal of Advances in Modeling Earth Systems Journal Volume: 12 Journal Issue: 1; Journal ID: ISSN 1942-2466
- Publisher:
- American Geophysical Union (AGU)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; E3SM; EAMv1; aerosol; snow impurity; aerosol‐cloud interaction; radiative forcing
Citation Formats
Wang, Hailong, Easter, Richard C., Zhang, Rudong, Ma, Po‐Lun, Singh, Balwinder, Zhang, Kai, Ganguly, Dilip, Rasch, Philip J., Burrows, Susannah M., Ghan, Steven J., Lou, Sijia, Qian, Yun, Yang, Yang, Feng, Yan, Flanner, Mark, Leung, Ruby L., Liu, Xiaohong, Shrivastava, Manish, Sun, Jian, Tang, Qi, Xie, Shaocheng, and Yoon, Jin‐Ho. Aerosols in the E3SM Version 1: New Developments and Their Impacts on Radiative Forcing. United States: N. p., 2020.
Web. doi:10.1029/2019MS001851.
Wang, Hailong, Easter, Richard C., Zhang, Rudong, Ma, Po‐Lun, Singh, Balwinder, Zhang, Kai, Ganguly, Dilip, Rasch, Philip J., Burrows, Susannah M., Ghan, Steven J., Lou, Sijia, Qian, Yun, Yang, Yang, Feng, Yan, Flanner, Mark, Leung, Ruby L., Liu, Xiaohong, Shrivastava, Manish, Sun, Jian, Tang, Qi, Xie, Shaocheng, & Yoon, Jin‐Ho. Aerosols in the E3SM Version 1: New Developments and Their Impacts on Radiative Forcing. United States. doi:10.1029/2019MS001851.
Wang, Hailong, Easter, Richard C., Zhang, Rudong, Ma, Po‐Lun, Singh, Balwinder, Zhang, Kai, Ganguly, Dilip, Rasch, Philip J., Burrows, Susannah M., Ghan, Steven J., Lou, Sijia, Qian, Yun, Yang, Yang, Feng, Yan, Flanner, Mark, Leung, Ruby L., Liu, Xiaohong, Shrivastava, Manish, Sun, Jian, Tang, Qi, Xie, Shaocheng, and Yoon, Jin‐Ho. Sat .
"Aerosols in the E3SM Version 1: New Developments and Their Impacts on Radiative Forcing". United States. doi:10.1029/2019MS001851.
@article{osti_1581193,
title = {Aerosols in the E3SM Version 1: New Developments and Their Impacts on Radiative Forcing},
author = {Wang, Hailong and Easter, Richard C. and Zhang, Rudong and Ma, Po‐Lun and Singh, Balwinder and Zhang, Kai and Ganguly, Dilip and Rasch, Philip J. and Burrows, Susannah M. and Ghan, Steven J. and Lou, Sijia and Qian, Yun and Yang, Yang and Feng, Yan and Flanner, Mark and Leung, Ruby L. and Liu, Xiaohong and Shrivastava, Manish and Sun, Jian and Tang, Qi and Xie, Shaocheng and Yoon, Jin‐Ho},
abstractNote = {The new Energy Exascale Earth System Model version 1 (E3SMv1) developed for the U.S. Department of Energy has significant new treatments of aerosols and light-absorbing snow impurities as well as their interactions with clouds and radiation. This study describes seven sets of new aerosol-related treatments (involving emissions, new particle formation, aerosol transport, wet scavenging and resuspension, and snow radiative transfer) and examines how they affect global aerosols and radiative forcing in E3SMv1. Altogether they give a reduced total aerosol radiative forcing (-1.6 W m-2) and sensitivity in cloud liquid water to aerosols, but an increased sensitivity in cloud droplet size to aerosols. A new approach for H2SO4 production/loss largely increases reduces a low bias in small particles concentrations and leads to substantial increases in CCN concentrations and cloud radiative cooling. Emitting secondary organic aerosol (SOA) precursor gases from elevated sources increases the column burden of SOA, contributing substantially to global clear-sky aerosol radiative cooling (-0.15 out of -0.5 W m-2). A new treatment of aerosol resuspension from evaporating precipitation, developed to remedy two shortcomings of the original treatment, produces a modest reduction in aerosols and cloud droplets; its impact depends strongly on the model physics and is much stronger in E3SM version 0. New treatments of the mixing state and optical properties of snow impurities and snow grains introduce a positive present-day shortwave radiative forcing (0.26 W m-2), but changes in aerosol transport and wet removal processes also affect the concentration and radiative forcing of light-absorbing impurities in snow/ice.},
doi = {10.1029/2019MS001851},
journal = {Journal of Advances in Modeling Earth Systems},
number = 1,
volume = 12,
place = {United States},
year = {2020},
month = {1}
}
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DOI: 10.1029/2019MS001851
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