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- Title
Increasing trend of northeast monsoon rainfall over the equatorial Indian Ocean and peninsular India.
- Authors
Prakash, Satya; C., Mahesh; Sathiyamoorthy, V.; Gairola, R.
- Abstract
Peninsular India and Sri Lanka receive major part of their annual rainfall during the northeast monsoon season (October-December). The long-term trend in the northeast monsoon rainfall over the Indian Ocean and peninsular India is examined in the vicinity of global warming scenario using the Global Precipitation Climatology Project (GPCP) dataset available for the period 1979-2010. The result shows a significant increasing trend in rainfall rate of about 0.5 mm day decade over a large region bounded by 10 °S-10 °N and 55 °E-100 °E. The interannual variability of seasonal rainfall rate over peninsular India using conventional rain gauge data is also investigated in conjunction to the Indian Ocean dipole. The homogeneous rain gauge data developed by Indian Institute of Tropical Meteorology over peninsular India also exhibit the considerable upward rainfall trend of about 0.4 mm day decade during this period. The associated outgoing longwave radiation shows coherent decrease in the order of 2 W m decade over the rainfall increase region.
- Subjects
INDIAN Ocean; INDIA; RAINFALL frequencies; RAIN gauges; GLOBAL warming &; the environment; GLOBAL Precipitation Climatology Project
- Publication
Theoretical & Applied Climatology, 2013, Vol 112, Issue 1-2, p185
- ISSN
0177-798X
- Publication type
Article
- DOI
10.1007/s00704-012-0719-6