Abstract

본 연구의 목적은 인공위성 자료를 활용한 가뭄지수를 산정하고 이를 통해 2013년 발생한 남부지방의 가뭄을 평가하는데 있다. 다중분광센서인 MODerate resolution Imaging Spectroradiometer(MODIS) 센서의 다양한 산출물을 통해 수문기상인자 기반의 가뭄지수(Evaporative Stress Index, ESI)를 산정하고 이를 유관기관의 가뭄 정보 시스템의 가뭄 모니터링 결과와 비교 분석하였다. 또한 국내에서 널리 이용되고 있는 PDSI(Palmer Drought Severity Index), SPI(Standardized Precipitation Index)와 ESI의 시계열 분석을 통해 ESI의 국내 적용성을 판단하고자 하였다. 각 가뭄지수들의 시공간 비교를 통해 ESI의 국내 적용성이 높음을 확인할 수 있다. The objective of this study is to derive and evaluate the drought index by using satellite data. The satellite-based drought index was spatially assessed at Southern part of Korean peninsula in 2013. We estimated hydrometeorological parameter-based drought index (Evaporative Stress Index, ESI) by using various products of multispectral sensor, MODerate resoultion Imaging Spectroradiometer (MODIS). The ESI analyzed other spatial distribution of drought indices provided by drought information system from related organizations. Regional capability of ESI through time series analysis compared with PDSI(Palmer Drought Severity Index) and SPI(Standardized Precipitation Index) was assessed. Based on the results in this study, it can be concluded that the derived ESI showed better regional capability than the other drought indices.

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