Correlation analysis of agricultural drought risk on wet farming crop and meteorological drought index in the tropical-humid region

Abstract In the tropical-humid region, wet farming crops (e.g., paddy) are a common agricultural commodity with high-water requirement. Usually planted in Asia monsoon region high precipitation rate, these divided into cropping season and dry season. During season, they particularly vulnerable to drought caused by decrease precipitation. This study used Indonesia as case is aimed at assessing risk on crop during examining correlation between hazard its risk. For assessment, Standardized Precipitation Index (SPI) was assess drought, using Global Satellite Mapping of (GSMaP) which has 0.1° × spatial resolution. The result analysis SPI drought-affected areas city scale showed that SPI-3 August most suitable timescale Indonesia. assessment conducted grid scale, where yield estimation model developed help Normalized Difference Vegetation (NDVI). Based detrended indicators, higher loss found area above threshold value ( r -value ≤ 0.6) indicating those were more while below lower even hit severe because existing irrigation system able resist drought’s impact loss.