Physics
Scientific paper
Jun 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3112112p&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 12, CiteID L12112
Physics
4
Meteorology And Atmospheric Dynamics: Climatology (1620), Meteorology And Atmospheric Dynamics: Precipitation (1854), Meteorology And Atmospheric Dynamics: Land/Atmosphere Interactions, Meteorology And Atmospheric Dynamics: Numerical Modeling And Data Assimilation
Scientific paper
The role of surface boundary forcing over South Asia in the Indian summer monsoon circulation is analyzed by a series of sensitivity experiments within a regional climate modeling framework. The components of surface boundary forcing that impacted the modeled monsoon circulation are: land use property, land-sea contrast, and orography over South Asia. The land use properties including vegetation and soil conditions do not significantly affect the simulated seasonal rainfall, but they do play an important role in reproducing its intra-seasonal variability. The land-sea contrast is found to play a role in monsoonal precipitation over India and southern China by enhancing the large-scale flow in the lower troposphere north of 10°N. Orography over South Asia affects the interhemispheric gyre circulation, and its impact penetrates up to the mid-troposphere. This study confirms that the regional climate model is a valuable tool for identifying the mechanisms associated with monsoonal circulation.
Hong Song-You
Park Suhee
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