Science Source
Observed changes in extreme wet and dry spells during the South Asian summer monsoon season
- Completes a comprehensive statistical analysis of precipitation observations from 1951–2011
- Shows that statistically significant decreases in peak-season precipitation over the core-monsoon region have co-occurred with statistically significant increases in daily-scale precipitation variability
- Finds statistically significant increases in the frequency of dry spells and intensity of wet spells, and statistically significant decreases in the intensity of dry spells
- Finds that these changes in extreme wet and dry spell characteristics are supported by increases in convective available potential energy and low-level moisture convergence, along with changes to the large-scale circulation aloft in the atmosphere
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