Drought is one of the natural disasters that slowly begin to accumulate over a long period. Although there are many kinds of drought indices, one single universally accepted definition does not currently exist, which makes it difficult to evaluate drought severity comprehensively and objectively. This paper describes the comparisons of satellite-based drought indices such as SPI (Standardized Precipitation Index), NDDI (Normalized Difference Drought Index), NMDI (Normalized Multi-band Drought Index), VHI (Vegetation Health Index) and SDCI (Scaled Drought Condition Index) to analyze agricultural drought in Korea. Through an experiment using the five drought indices, we found that VHI and the SPI2 calculated from 2-month accumulated precipitation were highly correlated and appropriate to express agricultural drought in South and North Korea. Also, the SPI2 and VHI showed close relationships with hydro-meteorological factors and vegetation production variables. For future work, it is necessary to develop a comprehensive drought index which can cover various aspects of drought including precipitation, evapotranspiration, soil moisture, and vegetation state.

Abstract
 1. 서론
 2. 연구지역 및 자료
  1) 연구지역
  2) 연구자료
  3) 토지피복 자료
 3. 위성기반 가뭄지수
  1) Standardized Precipitation Index
  2) Normalized Difference Drought Index
  3) Normalized Multi-band Drought Index
  4) Vegetation Health Index
  5) Scaled Drought Condition Index
 4. 결과 및 고찰
  1) 토지 피복 비교 결과
  2) 가뭄지수 상호비교
  3) 가뭄지수 품질평가
  4) 북한 지역 적용
 5. 결론
 References

• 윤예슬(부경대학교 지구환경시스템과학부 공간정보공학전공) | Ye-Seul Yun (Department of Spatial Information Engineering, Pukyong National University)
• 이수진(부경대학교 지구환경시스템과학부 공간정보공학전공) | Soo-Jin Lee (Department of Spatial Information Engineering, Pukyong National University)
• 박성욱(부경대학교 지구환경시스템과학부 공간정보공학전공) | Seongwook Park (Department of Spatial Information Engineering, Pukyong National University)
• 이양원(부경대학교 지구환경시스템과학부 공간정보공학전공) | Yang-Won Lee (Department of Spatial Information Engineering, Pukyong National University)
• 김나리(부경대학교 지오메틱연구소) | Nari Kim (Geomatics Research Institute, Pukyong National University) Correspondence
• 손은하(국가기상위성센터 위성분석과) | Eunha Sohn (Satellite Analysis Division, National Meteorological Satellite Center)
• 장재동(국가기상위성센터 위성분석과) | Jae-Dong Jang (Satellite Analysis Division, National Meteorological Satellite Center)