국지기후 예보를 위한 초고해상도 지면정보 데이터베이스 구축 (Constructing Ground Information Database with Ultra- high Resolution for Regional Climate Forecasting)

서지정보

· 발행기관 : 건국대학교 기후연구소
· 수록지 정보 : 기후연구 / 8권 / 1호 / 67 ~ 79페이지
· 저자명 : 장동호, 백승균

초록

In this study, the ultra-high resolution ground information database (30m × 30m), such as elevation map, facet map, coastal map, land cover map, was constructed over Korean Peninsula. ASTER GDEM with 30m resolution was used to generate elevation map, facet map, coastal map, and the accuracy of GDEM was validated using DEM constructed with 1:25,000 digital map. The facet map was generated with 8 direction and flat area using GDEM. The coastal map with 6 categories was generated by buffering of the distance from coast line, additionally considered with elevation. The land cover map was generated with Landsat ETM+ 24 scenes (around 2000’s) by supervised classification, the land cover classes was composed with urbanization, agriculture, green field, forest, tidal flat, bare land, water area. The file format of ground information database is 8-bit or 16-bit unsigned Geotiff, the image size is 27,331 × 40,858 pixels, and the file size is 1.04GB or 2.08GB. The coordinate system composed of UTM projection and WGS84 ellipsoid was applied to the database for the equal grid resolution. This ultra-high resolution ground information database will be able to provide a basis for regional climate modelling and forecasting accuracy enhancement.

영어초록

In this study, the ultra-high resolution ground information database (30m × 30m), such as elevation map, facet map, coastal map, land cover map, was constructed over Korean Peninsula. ASTER GDEM with 30m resolution was used to generate elevation map, facet map, coastal map, and the accuracy of GDEM was validated using DEM constructed with 1:25,000 digital map. The facet map was generated with 8 direction and flat area using GDEM. The coastal map with 6 categories was generated by buffering of the distance from coast line, additionally considered with elevation. The land cover map was generated with Landsat ETM+ 24 scenes (around 2000’s) by supervised classification, the land cover classes was composed with urbanization, agriculture, green field, forest, tidal flat, bare land, water area. The file format of ground information database is 8-bit or 16-bit unsigned Geotiff, the image size is 27,331 × 40,858 pixels, and the file size is 1.04GB or 2.08GB. The coordinate system composed of UTM projection and WGS84 ellipsoid was applied to the database for the equal grid resolution. This ultra-high resolution ground information database will be able to provide a basis for regional climate modelling and forecasting accuracy enhancement.

참고자료

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