Impact of cloud radiative heating on East Asian summer monsoon circulation
Abstract
The impacts of cloud radiative heating on East Asian Summer Monsoon (EASM) over the southeastern China (105°-125°E, 20°-35°N) are explained by using the Community Atmosphere Model version 5 (CAM5). Sensitivity experiments demonstrate that the radiative heating of clouds leads to a positive effect on the local EASM circulation over southeastern China. Without the radiative heating of cloud, the EASM circulation and precipitation would be much weaker than that in the normal condition. The longwave heating of clouds dominates the changes of EASM circulation. The positive effect of clouds on EASM circulation is explained by the thermodynamic energy equation, i.e. the different heating rate between cloud base and cloud top enhances the convective instability over southeastern China, which enhances updraft consequently. The strong updraft would further result in a southward meridional wind above the center of the updraft through Sverdrup vorticity balance.
- Authors:
-
- Chinese Academy of Sciences (CAS), Beijing (China). LASG, Institute of Atmospheric Physics; Chinese Academy of Sciences (CAS), Beijing (China). Climate Change Research Center; Nanjing Univ. (China). Institute for Climate and Global Change Research & School of Atmospheric Sciences
- Chinese Academy of Sciences (CAS), Beijing (China). LASG, Institute of Atmospheric Physics; Chinese Academy of Sciences (CAS), Beijing (China). Climate Change Research Center
- Nanjing Univ. (China). Institute for Climate and Global Change Research & School of Atmospheric Sciences; Collaborative Innovation Center of Climate Change, Jiangsu Province (China); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Publication Date:
- Research Org.:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- OSTI Identifier:
- 1221466
- Report Number(s):
- PNNL-SA-110320
Journal ID: ISSN 1748-9326; KP1703020
- Grant/Contract Number:
- AC06-76RL01830
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Environmental Research Letters
- Additional Journal Information:
- Journal Volume: 10; Journal Issue: 7; Journal ID: ISSN 1748-9326
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; EASM; cloud radiative heating; numerical experiments
Citation Formats
Guo, Zhun, Zhou, Tianjun, Wang, Minghuai, and Qian, Yun. Impact of cloud radiative heating on East Asian summer monsoon circulation. United States: N. p., 2015.
Web. doi:10.1088/1748-9326/10/7/074014.
Guo, Zhun, Zhou, Tianjun, Wang, Minghuai, & Qian, Yun. Impact of cloud radiative heating on East Asian summer monsoon circulation. United States. https://doi.org/10.1088/1748-9326/10/7/074014
Guo, Zhun, Zhou, Tianjun, Wang, Minghuai, and Qian, Yun. Fri .
"Impact of cloud radiative heating on East Asian summer monsoon circulation". United States. https://doi.org/10.1088/1748-9326/10/7/074014. https://www.osti.gov/servlets/purl/1221466.
@article{osti_1221466,
title = {Impact of cloud radiative heating on East Asian summer monsoon circulation},
author = {Guo, Zhun and Zhou, Tianjun and Wang, Minghuai and Qian, Yun},
abstractNote = {The impacts of cloud radiative heating on East Asian Summer Monsoon (EASM) over the southeastern China (105°-125°E, 20°-35°N) are explained by using the Community Atmosphere Model version 5 (CAM5). Sensitivity experiments demonstrate that the radiative heating of clouds leads to a positive effect on the local EASM circulation over southeastern China. Without the radiative heating of cloud, the EASM circulation and precipitation would be much weaker than that in the normal condition. The longwave heating of clouds dominates the changes of EASM circulation. The positive effect of clouds on EASM circulation is explained by the thermodynamic energy equation, i.e. the different heating rate between cloud base and cloud top enhances the convective instability over southeastern China, which enhances updraft consequently. The strong updraft would further result in a southward meridional wind above the center of the updraft through Sverdrup vorticity balance.},
doi = {10.1088/1748-9326/10/7/074014},
journal = {Environmental Research Letters},
number = 7,
volume = 10,
place = {United States},
year = {Fri Jul 17 00:00:00 EDT 2015},
month = {Fri Jul 17 00:00:00 EDT 2015}
}
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Works referencing / citing this record:
Modulations of rising motion and moisture on summer precipitation over the middle and lower reaches of the Yangtze river
journal, May 2018
- Leung, Marco Y. T.; Qiu, Shuang; Zhou, Wen
- Climate Dynamics, Vol. 51, Issue 11-12