Diurnal variation in summer monsoon precipitation during active and break periods over central India and southern Himalayan foothills

Author
Singh, Prasamsa
Nakamura, Kenji
Faculty Advisor
Date
2010
Keywords
diurnal variation , active and break periods , TRMM
Abstract (summary)
The diurnal variations of summer precipitation over central India and the southern Himalayan foothills are investigated using Tropical Rainfall Measuring Mission (TRMM) data for July–August from 1998 to 2007. The TRMM precipitation radar (PR) and Lightning Imaging Sensor (LIS) data are used to understand characteristics of precipitation. Daily data from TRMM/3B42 are used to determine active and break periods in central India on the basis of rainfall characteristics. Diurnal variation in rain rate, frequency of rain, conditional rain rate, storm height, and occurrence of convective rain is analyzed using TRMM/PR data (0.1° × 0.1° resolution). Diurnal variation in total lightning flashes is analyzed using TRMM/LIS data. The precipitation over central India during wet periods is characterized by a large amount of rainfall with a high frequency of rain and a secondary morning peak. The precipitation in dry periods is characterized by a strong diurnal variation with convective rainfall and enhanced electrical activity over central India. Characteristics of wet and dry periods over central India are generally supported over the southern Himalayan foothills. Copyright American Geophysical Union.
Publication Information
Singh, P., & Nakamura, K. (2010). Diurnal variation in summer monsoon precipitation during active and break periods over central India and southern Himalayan foothills. Journal of Geophysical Research, 115, D12122, doi:10.1029/2009JD012794
DOI
Notes
Item Type
Article
Language
English
Rights
All Rights Reserved