Mid-Holocene Ocean Feedback on Global Monsoon Area and Precipitation

Mid-Holocene ocean feedback on global monsoon area, global monsoon precipitation(GMP), and GMP intensity(GMPI) was investigated by a set of numerical experiments performed with the Community Climate System Model version 4. Results showed that ocean feedback induced an increase in land monsoon area f...

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Published inAtmospheric and oceanic science letters = Daqi-he-haiyang-kexue-kuaibao Vol. 8; no. 1; pp. 29 - 32
Main Author TIAN Zhi-Ping JIANG Da-Bang
Format Journal Article
LanguageEnglish
Published Beijing Routledge 2015
KeAi Publishing Communications Ltd
Climate Change Research Center, Chinese Academy of Sciences, Beijing 100029, China%Climate Change Research Center, Chinese Academy of Sciences, Beijing 100029, China
Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
Subjects
Area
area;monsoon
Climate system
feedback;monsoon
Holocene
Mid-Holocene
Mid-Holocene;ocean
monsoon area
monsoon precipitation
Monsoons
Ocean currents
ocean feedback
Precipitation
Temperature gradients
Tropical climate
Wind
Indian Ocean
Southern Hemisphere
ocean feedback
Mid-Holocene
monsoon area
monsoon precipitation
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Summary:Mid-Holocene ocean feedback on global monsoon area, global monsoon precipitation(GMP), and GMP intensity(GMPI) was investigated by a set of numerical experiments performed with the Community Climate System Model version 4. Results showed that ocean feedback induced an increase in land monsoon area for northern Africa but a decrease for Asia and North and South America, and led to an increase in ocean monsoon area for the western Indian Ocean and southeastern Pacific but a decrease for the eastern Indian Ocean, tropical western Pacific, and tropical West Atlantic between the mid-Holocene and pre-industrial period. Dynamic oceaninduced changes in GMP and GMPI were 10.9×109 m3 d-1and-0.11 mm d-1 between the two periods, respectively.Ocean feedback induced consistent change between the Northern and Southern Hemisphere land or ocean but opposite change between land and ocean in the Northern or Southern Hemisphere monsoon areas for monsoon precipitation. The mid-Holocene summer changes in meridional temperature gradient and land-sea thermal contrast were the underlying mechanisms.
Bibliography:Mid-Holocene;ocean feedback;monsoon area;monsoon p
Mid-Holocene ocean feedback on global monsoon area, global monsoon precipitation(GMP), and GMP intensity(GMPI) was investigated by a set of numerical experiments performed with the Community Climate System Model version 4. Results showed that ocean feedback induced an increase in land monsoon area for northern Africa but a decrease for Asia and North and South America, and led to an increase in ocean monsoon area for the western Indian Ocean and southeastern Pacific but a decrease for the eastern Indian Ocean, tropical western Pacific, and tropical West Atlantic between the mid-Holocene and pre-industrial period. Dynamic oceaninduced changes in GMP and GMPI were 10.9×109 m3 d-1and-0.11 mm d-1 between the two periods, respectively.Ocean feedback induced consistent change between the Northern and Southern Hemisphere land or ocean but opposite change between land and ocean in the Northern or Southern Hemisphere monsoon areas for monsoon precipitation. The mid-Holocene summer changes in meridional temperature gradient and land-sea thermal contrast were the underlying mechanisms.
11-5693/P
TIAN Zhi-Ping;JIANG Da-Bang;Climate Change Research Center, Chinese Academy of Sciences;Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences
ISSN:1674-2834
2376-6123
DOI:10.3878/AOSL20140068