Assessment of Meteorological Drought using Drinc and GIS in Tiruttani Block of Thiruvallur District, Tamil Nadu, India

Abstract

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.

SPI-Based Spatiotemporal Drought over Sri Lanka

“…Also, based on SPI, drought can be calculated at different time scales [3], and it can also be considered as an agricultural drought indicator [7]. A number of published studies are available in the literature on the use of SPI in assessing drought intensity in many countries [4,8,9]. However, application of SPI to assess the drought during recent past over entire Sri Lanka has not been reported in the literature to the best of authors' knowledge.…”