• Title/Summary/Keyword: Thermal Spatial Representativity

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Thermal Spatial Representativity of Meteorological Stations using MODIS Land Surface Temperature (MODIS 지표면온도 자료를 이용한 기상관측소의 열적 공간 대표성 조사)

  • Lee, Chang-Suk;Han, Kyung-Soo;Yeom, Jong-Min;Song, Bong-Geun;Kim, Young-Seup
    • Journal of the Korean Association of Geographic Information Studies
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    • v.10 no.3
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    • pp.123-133
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    • 2007
  • Thermal spatial representativities of meteorological stations over Korea have been investigated using land surface temperature (LST) based on MODerate resolution Imaging Spectroradiometer (MODIS) satellite observation. The linear regression method was used to estimate air temperatures from MODIS LST product. To compare MODIS LST with observed air temperatures at six meteorological stations, the mean values of MODIS LST with nine given window sizes were calculated. In this case, the position of centered pixel in each given window size is correspond to that of each meteorological station. We also applied $4^{\circ}C$ threshold for RMSE comparison, which is based on a analogous study on daily maximum air temperature model using satellite data. In this study, the results showed that each station has a different representativity; Deajeon $15km{\times}15km$, Chuncheon $11km{\times}11km$, Seoul $7km{\times}7km$, Deagu $5km{\times}5km$, Kwangju $3km{\times}3km$, and Busan $3km{\times}3km$.

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