Please use this identifier to cite or link to this item:
Authors: D'Errico, Miriam* 
Cagnazzo, Chiara* 
Fogli, Pier Giuseppe* 
Lau, William K. M.* 
von Hardenberg, Jost* 
Fierli, Federico* 
Cherchi, Annalisa* 
Title: Indian monsoon and the elevated-heat-pump mechanism in a coupled aerosol-climate model
Journal: Journal of Geophysical Research: Atmospheres 
Series/Report no.: /120 (2015)
Issue Date: 2015
DOI: 10.1002/2015JD023346
Abstract: A coupled aerosol‐atmosphere‐ocean‐sea ice climate model is used to explore the interaction between aerosols and the Indian summer monsoon precipitation on seasonal‐to‐interannual time scales. Results show that when increased aerosol loading is found on the Himalayas slopes in the premonsoon period (April–May), intensification of early monsoon rainfall over India and increased low‐level westerly flow follow, in agreement with the elevated‐heat‐pump mechanism. The increase in rainfall during the early monsoon season has a cooling effect on the land surface. In the same period, enhanced surface cooling may also be amplified through solar dimming by more cloudiness and aerosol loading, via increased dust transported by low‐level westerly flow. The surface cooling causes subsequent reduction in monsoon rainfall in July–August over India. The time‐lagged nature of the reasonably realistic response of the model to aerosol forcing suggests that absorbing aerosols, besides their potential key roles in impacting monsoon water cycle and climate, may influence the seasonal variability of the Indian summer monsoon.
Appears in Collections:Article published / in press

Files in This Item:
File Description SizeFormat
derricoetal2015-online.pdf1.82 MBAdobe PDFView/Open
Show full item record

Citations 1

Last Week
Last month
checked on Feb 7, 2021

Page view(s)

Last Week
Last month
checked on Apr 17, 2021


checked on Apr 17, 2021

Google ScholarTM