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A Method of Calculating Surface Moisture from GMS and AHHRR
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摘要: 根据GMS红外通道遥感到的土壤表面温度随时间的变化率对土壤水分最敏感，且该变化率又与极轨卫星测到的植被指数存在负相关的事实，提出了一个更能反映土壤表面水分的干旱分级指数（DCI），对土壤水分按6个等级监测。该指数与江苏、吉林两省实测土壤湿度或降水分级之间的相关系数在0.70以上。Abstract: The change of soil surface temperature with time from GMS infrared channels is the most sensitive to soil moisture and has negative correlation with vegetation index from polar orbiting satellite, so that a Drought Condition Index (DCI) with six classifications to estimate surface moisture is put up. The correlation coefficients between DCI and the observed soil moisture or precipitation classification in Jiangsu and Jilin Provinces are more than 0.7.
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