The expansion of agriculture and aquaculture farms in the coastal areas has led to conversion of mangroves in the recent past. The extent of mangroves has also changed due to the erosion of mangroves along the coast and accretion near river mouths, leading to the formation of new mangrove areas.

Drought is one of the climatic Disasters and it is complex phenomenon. The main reason for Drought is deficiency of precipitation. Mainly drought can be classified into four types they are meteorological drought, hydrological drought, agricultural drought and socioeconomic drought. The present paper summarizes the assessment of meteorological drought using India Meteorological Department (IMD) method and Standardized Precipitation Index (SPI) method. SPI was calculated for 3months, 6months and 12months time scales using a program SPI_SL_6.exe, developed by the WMO (World Meteorological Organization) in 2012 and DrinC software developed by National Technical University of Athens. The meteorological vulnerability map generated in GIS platform will help to concentrate more on problematic areas to prepare mitigation measures to reduce the impact of drought of the study area.

No abstract