Tracing the Origin of the South Asian Summer Monsoon Precipitation and Its Variability Using a Novel Lagrangian Framework
نویسندگان
چکیده
Abstract The water sources and their variability responsible for the South Asian summer monsoon precipitation were analyzed using Lagrangian atmospheric water-mass trajectories. results indicated that evaporated waters from central south Indian Ocean are major contributors to rainfall, followed by contribution local recycling (precipitated evapotranspirated landmass), Arabian Sea, remote sources, Bay of Bengal. It was also found although direct originating Bengal is small, it still provides a pathway comes other regions. This hence only crossing over outcomes further revealed net coastal regions Ganges–Brahmaputra–Meghna Delta, northeast India, Myanmar, foothills Himalayas, central-east India. Evaporated Sea mainly contributing rainfall western coast west-central Summer due primarily restricted Indo-Gangetic plain. No recycled observed mountain chain along west India (Western Ghats). month-to-month variation Asia be linked with Somali low-level jet variability. interannual controlled sourced traveled Ocean.
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ژورنال
عنوان ژورنال: Journal of Climate
سال: 2021
ISSN: ['1520-0442', '0894-8755']
DOI: https://doi.org/10.1175/jcli-d-20-0967.1