다중선형 회귀모형과 천리안 지면온도를 활용한 토양수분 산정 연구
Estimation of Soil Moisture Using Multiple Linear Regression Model and COMS Land Surface Temperature Data
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참고문헌
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초록
This study is to estimate the spatial soil moisture using multiple linear regression model (MLRM) and 15 minutes interval Land Surface Temperature(LST) data of Communication, Ocean and Meteorological Satellite (COMS). For the modeling, the input data of COMS LST, Terra MODIS NormalizedDifference Vegetation Index (NDVI), daily rainfall and sunshine hour were considered and prepared. Using the observed soil moisture data at 9 stationsof Automated Agriculture Observing System (AAOS) from January 2013 to May 2015, the MLRMs were developed by twelve scenarios of inputcomponents combination. The model results showed that the correlation between observed and modelled soil moisture increased when using antecedentrainfalls before the soil moisture simulation day. In addition, the correlation increased more when the model coefficients were evaluated by seasonalbase. This was from the reverse correlation between MODIS NDVI and soil moisture in spring and autumn season.
Abstract
This study is to estimate the spatial soil moisture using multiple linear regression model (MLRM) and 15 minutes interval Land Surface Temperature(LST) data of Communication, Ocean and Meteorological Satellite (COMS). For the modeling, the input data of COMS LST, Terra MODIS NormalizedDifference Vegetation Index (NDVI), daily rainfall and sunshine hour were considered and prepared. Using the observed soil moisture data at 9 stationsof Automated Agriculture Observing System (AAOS) from January 2013 to May 2015, the MLRMs were developed by twelve scenarios of inputcomponents combination. The model results showed that the correlation between observed and modelled soil moisture increased when using antecedentrainfalls before the soil moisture simulation day. In addition, the correlation increased more when the model coefficients were evaluated by seasonalbase. This was from the reverse correlation between MODIS NDVI and soil moisture in spring and autumn season.
참고문헌 (31)
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