Experimental Study Of The Temperature Variation Characteristic Of Some Typical Ground Objects

Geoscience is moving towards to the direction of more accurately quantitative, results of accurate quantitative retrieval the ground objects temperature will promote fields such as drought forecasting and crop water stress studies, crop yield estimates, digital weather forecasting, global change and global carbon balance studies progress. The temperature of ground objects is an important parameter that researches the material and energy exchange between ground objects and atmosphere, numerical prediction, global ocean circulation and climate change, it is a basic physics character of ground objects, which reflects the internal mechanism of ground objects, different ground objects have different temperature characteristics, therefore comprehended the temperature diurnal variation characteristics of the urban typical ground objects is not only a theory base of the research and application of the remote sensing technology, but also is a application basic of ground objects classification and identification.Based on the analysis of the typical ground objects research actuality at home and abroad, aim at several city typical ground objects (include concrete road, cypress, willow, poplar, pinaster, grassplot, water) different seasonal temperature diurnal variation characteristic, each species ground objects an temperature annual variation characteristics, as well as the temperature difference characteristics between each species ground objects, the study includes includes.①Convert the collected radiation temperature to true temperature in application of infrared temperature measurement principle.②Analysis temperature variation characteristic along with time in the four seasons, summing up the maximum temperature, minimum temperature changes along with time law about the objects, and analyze the law of reached around the maximum temperature, minimum temperature changes along with time.③Analysis of the temperature difference characteristics along with time between various typical ground objects, and the change law of the maximum temperature difference between objects, summing up the time change law of reached around the maximum temperature difference,the minimum temperature difference, summarizes the temperature difference characteristics between different ground objects in each season.④Establish temperature diurnal variation model of the typical ground objects in different seasons, and the temperature annual variation model of the typical ground objects.⑤Utilize actual remote sensing data to test and analysis the experiment results, and verify the accuracy of model and experiment results. The results of the study will have the reference value for identify and classify the type of ground objects, and provide the scientific basis for observation and identify the type of ground objects based on the temperature variation characteristics.