Intra-seasonal contrasting trends in clouds due to warming induced circulation changes.

ABSTRACT: Quantification of long term changes in cloud distribution and properties is critical for the proper assessment of future climate. We show contrasting trends in cloud properties and cloud radiative effects over Northwest Indian Ocean (NWIO) in south Asian summer monsoon. Cloud top height (CTH) decreases in June (- 69 ± 3 myr^-1) and July (- 44 ± 3 myr^-1), whereas it increases in August (106 ± 2 myr^-1) and September (37 ± 1 myr^-1). These contrasting trends are investigated to be due to the changes in upper tropospheric winds and atmospheric circulation pattern. Strengthening of upper tropospheric easterlies and changes in vertical wind dampen the vertical development of clouds in June and July. In contrast, weakening of upper tropospheric winds over

SUBMITTER: Prijith SS 

PROVIDER: S-EPMC8379180 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature