【摘要】 重点阐述用AVHRR的CH4反演的下垫面温度监测四川中部旱情的方法。结果表明，遥感下垫面温度与干旱指数线性相关很好，其空间分布与地面旱情分布基本一致，用遥感下垫面温度结合地面气象、农气、灾情等实时资料可快速、实时监测大面积夏旱动态。更多还原

【Abstract】 The method of using the underlying surface temperature from the forth channel data of AVHRR to monitor the drought in centeral Sichuan Province is described,and some interesting results are obtained. The underlying surface temperature is much linearly interrelated to the drought index,and it’s spacial distribution is almost consistent with the condition of drought.Through comprehensive analysis of the underlying surface temperature from remote sensing,realtime surface observations, observations from agriculture meteorology,and information from the drought,it is possible to monitor the trend of a drought for large area in real-time.更多还原