Different precipitation response over land and ocean to orbital and greenhouse gas forcing.

ABSTRACT: Various proxies suggest a nearly in-phase variation of monsoons with local summer insolation. Oceanic proxies of monsoons document a more complex response. Climate model simulations also indicate that the response is different over land and ocean. Here using a transient simulation by a climate model over the last 22,000 years we have unraveled the factors that lead to these differences within the Indian subcontinent. We show that during the deglacial (22-12 ka) precipitation over India and the Bay of Bengal (BoB) are in phase, whereas they are out of phase across the Holocene ([Formula: see text] 12 ka to 0 ka). During the deglacial, water vapor amplifies the effect of solar forcing on precipitation over both the regions, whereas contributions from surface latent heat fluxes over the BoB d

SUBMITTER: Jalihal C 

PROVIDER: S-EPMC7367857 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature