한국GIS학회:학술대회논문집 (Proceedings of the Korean Association of Geographic Inforamtion Studies Conference)
- 한국GIS학회 2003년도 공동 춘계학술대회 논문집
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- Pages.291-296
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- 2003
NOAA/AVHRR 자료를 이용한 일 최고기온 추정에 관한 연구
Estimation of daily maximum air temperature using NOAA/AVHRR data
초록
This study estimated surface temperature by using split-window technique and NOAA/AVHRR data was used. For surface monitoring, cloud masking procedure was carried out using threshold algorithm. The daily maximum air temperature is estimated by multiple regression method using independent variables such as satellite-derived surface temperature, EDD, and latitude. When the EDD data added, the highest correlation shown. This indicates that EDD data is the necessary element for estimation of the daily maximum air temperature. We derived correlation and experience equation by three approaching method to estimate daily maximum air temperature. 1) non-considering landcover method as season, 2) considering landcover method as season, and 3) just method as landcover. The last approaching method shows the highest correlation. So cross-validation procedure was used in third method for validation of the estimated value. For all landcover type 5, the results using the cross-validation procedure show reasonable agreement with measured values(slope=0.97, intercept=-0.30, R
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