Development and Evaluation of an Explicit Treatment of Aerosol Processes at Cloud Scale Within a Multi‐Scale Modeling Framework (MMF)
Abstract
Modeling the aerosol lifecycle in traditional global climate models (GCM) is challenging for a variety of reasons, not the least of which is the coarse grid. The multi-scale modeling framework (MMF), in which a cloud resolving model replaces conventional parameterizations of cloud processes within each GCM grid column, provides a promising framework to address this challenge. Here, we develop a new version of MMF that for the first time treats aerosol processes at cloud scale to improve the aerosol-cloud interaction representation in the model. We demonstrate that the model with the explicit aerosol treatments shows significant improvements of many aspects of the simulated aerosols compared to the previous version of MMF with aerosols parameterized at the GCM grid scale. The explicit aerosol treatments produce a significant increase of the column burdens of black carbon (BC), primary organic aerosol (POA), and sulfate by up to 40% in many remote regions, a decrease of the sea-salt aerosol burdens by 40% in remote regions. These differences are caused by the differences in aerosol convective transport and wet removal between these two models. The new model also shows reduced bias of BC surface concentration in North America and BC vertical profiles in the high-latitudes.more »
- Authors:
-
- Atmospheric Science and Global Change Division Pacific Northwest National Laboratory Richland WA USA
- Institute for Climate and Global Change Research and School of Atmospheric Sciences Nanjing University Nanjing China
- Publication Date:
- Research Org.:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1461620
- Alternate Identifier(s):
- OSTI ID: 1461621; OSTI ID: 1464497; OSTI ID: 1510935
- Report Number(s):
- PNNL-SA-136107
Journal ID: ISSN 1942-2466
- Grant/Contract Number:
- DE‐AC02‐05CH11231; AC02-05CH11231; 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: 10 Journal Issue: 7; Journal ID: ISSN 1942-2466
- Publisher:
- American Geophysical Union (AGU)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; aerosol; aerosol-cloud ineractions; MMF; aerosol radiative forcing
Citation Formats
Lin, Guangxing, Ghan, Steven J., Wang, Minghuai, Ma, Po‐Lun, Easter, Richard C., Ovchinnikov, Mikhail, Fan, Jiwen, Zhang, Kai, Wang, Hailong, Chand, Duli, and Qian, Yun. Development and Evaluation of an Explicit Treatment of Aerosol Processes at Cloud Scale Within a Multi‐Scale Modeling Framework (MMF). United States: N. p., 2018.
Web. doi:10.1029/2018MS001287.
Lin, Guangxing, Ghan, Steven J., Wang, Minghuai, Ma, Po‐Lun, Easter, Richard C., Ovchinnikov, Mikhail, Fan, Jiwen, Zhang, Kai, Wang, Hailong, Chand, Duli, & Qian, Yun. Development and Evaluation of an Explicit Treatment of Aerosol Processes at Cloud Scale Within a Multi‐Scale Modeling Framework (MMF). United States. https://doi.org/10.1029/2018MS001287
Lin, Guangxing, Ghan, Steven J., Wang, Minghuai, Ma, Po‐Lun, Easter, Richard C., Ovchinnikov, Mikhail, Fan, Jiwen, Zhang, Kai, Wang, Hailong, Chand, Duli, and Qian, Yun. Wed .
"Development and Evaluation of an Explicit Treatment of Aerosol Processes at Cloud Scale Within a Multi‐Scale Modeling Framework (MMF)". United States. https://doi.org/10.1029/2018MS001287.
@article{osti_1461620,
title = {Development and Evaluation of an Explicit Treatment of Aerosol Processes at Cloud Scale Within a Multi‐Scale Modeling Framework (MMF)},
author = {Lin, Guangxing and Ghan, Steven J. and Wang, Minghuai and Ma, Po‐Lun and Easter, Richard C. and Ovchinnikov, Mikhail and Fan, Jiwen and Zhang, Kai and Wang, Hailong and Chand, Duli and Qian, Yun},
abstractNote = {Modeling the aerosol lifecycle in traditional global climate models (GCM) is challenging for a variety of reasons, not the least of which is the coarse grid. The multi-scale modeling framework (MMF), in which a cloud resolving model replaces conventional parameterizations of cloud processes within each GCM grid column, provides a promising framework to address this challenge. Here, we develop a new version of MMF that for the first time treats aerosol processes at cloud scale to improve the aerosol-cloud interaction representation in the model. We demonstrate that the model with the explicit aerosol treatments shows significant improvements of many aspects of the simulated aerosols compared to the previous version of MMF with aerosols parameterized at the GCM grid scale. The explicit aerosol treatments produce a significant increase of the column burdens of black carbon (BC), primary organic aerosol (POA), and sulfate by up to 40% in many remote regions, a decrease of the sea-salt aerosol burdens by 40% in remote regions. These differences are caused by the differences in aerosol convective transport and wet removal between these two models. The new model also shows reduced bias of BC surface concentration in North America and BC vertical profiles in the high-latitudes. However, the biased-high BC concentrations in the upper troposphere over the remote Pacific regions remain, requiring further improvements on other process representations (for example, secondary activation neglected in the model).},
doi = {10.1029/2018MS001287},
journal = {Journal of Advances in Modeling Earth Systems},
number = 7,
volume = 10,
place = {United States},
year = {Wed Jul 25 00:00:00 EDT 2018},
month = {Wed Jul 25 00:00:00 EDT 2018}
}
https://doi.org/10.1029/2018MS001287
Web of Science
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