Observational relationships between aerosol and Asian monsoon rainfall, and circulation
Observational relationships between aerosol and Asian monsoon rainfall, and circulation
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DOI：
10.1029/2006gl027546
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发表时间：
2006-11-08
影响因子：
5.2
通讯作者：
Kim, K. -M.
中科院分区：
文献类型：
--
作者：
Lau, K. -M.;Kim, K. -M.
初步的观测证据表明，印度次大陆和周边地区受到重负荷的吸收气溶胶，即，沙尘和黑碳，具有与亚洲季风水循环密切相关的空间和时间变化。与高架热泵假说相一致，我们发现，在前季风季节，印度-恒河平原上空吸收性气溶胶负荷的增加与a）对流层上层加热的增加有关，4 - 5月在青藏高原上空形成暖心高层反气旋，B）5月印度北方季风雨季的提前，及c）其后印度次大陆的雨量增加，而东亚的雨量则在6月至7月间减少。
Preliminary observational evidences are presented showing that the Indian subcontinent and surrounding regions are subject to heavy loading of absorbing aerosols, i.e., dust and black carbon, which possess spatial and temporal variability that are closely linked to those of the Asian monsoon water cycle. Consistent with the Elevated Heat Pump hypothesis, we find that increased loading of absorbing aerosols over the Indo-Gangetic Plain in the pre-monsoon season is associated with a) increased heating of the upper troposphere, with the formation of a warm-core upper level anticyclone over the Tibetan Plateau in April May, b) an advance of the monsoon rainy season in northern India in May, and c) subsequent increased rainfall over the Indian subcontinent, and decreased rainfall over East Asia in June-July.