Abstract
Abstract. Towards the goal to understand the role of land-surface processes over the Indian sub-continent, a series of soil-moisture sensitivity simulations have been performed using a non-hydrostatic regional climate model COSMO-CLM. The experiments were driven by the lateral boundary conditions provided by the ERA-Interim (ECMWF) reanalysis. The simulation results show that the pre-monsoonal soil moisture has a significant influence on the monsoonal precipitation. Both, positive and negative soil-moisture precipitation (S-P) feedback processes are of importance. The negative S-P feedback process is especially influential in the western and the northern parts of India.
Highlights
The Earth’s surface plays a key role in weather and climate because of the large energy and water exchange with the overlying atmosphere (Zhang et al, 2004)
The present work focuses on the investigation of the soil moisture-precipitation (S-P) feedback process over the Indian region
The results show that the changes in the monsoonal precipitation are clearly dominated by the indirect process in most of the years
Summary
The Earth’s surface plays a key role in weather and climate because of the large energy and water exchange with the overlying atmosphere (Zhang et al, 2004). The water reaching the land surface is distributed into soil water storage, runoff, or recycled into the atmosphere by evapotranspiration. Sensible heat, latent heat, and momentum has direct impacts on the wind vector, precipitation, and surface soil (Sellers, 1991). A proper understanding of the land atmosphere interaction is necessary. The present work focuses on the investigation of the soil moisture-precipitation (S-P) feedback process over the Indian region. The structure of this paper is as follows. The results and discussion are addressed in Sect.
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