Rising surface pressure over Tibetan Plateau strengthens indian summer monsoon rainfall over northwestern India.

ABSTRACT: The dipole pattern (wetting over northwestern India and drying over the Indo-Gangetic plains and northeast India) in the rainfall trends is reported in many earlier studies. The exact cause of the rainfall trends' asymmetry remains unclear. We show that increasing trends over the northwestern parts are closely associated with the rise in surface pressure over the Tibetan Plateau. The surface pressure over Tibetan Plateau shows increasing trends (0.23 hPa decade^-1, p < 0.01) during 1979-2020. Easterlies across northwest India and southerlies over east India show rises of - 0.26 ms^-1 decade^-1 and 0.15 ms^-1 decade^-1, respectively, in line with Tibetan surface pressure trends. Water vapour transfer across northwest India has increased as a

SUBMITTER: Singh R 

PROVIDER: S-EPMC9124204 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature