摘要
根据表征土壤温度日变化的土温方程一阶近似解 ,提出一种利用一日中任意时刻 NOAA- AVHRR图像数据估计地表温度日较差的简易推算方法。该方法尤其可用于反演土壤含水量的计算 ,当图像数据的时次与热惯量法所要求的最高、最低温度时次配不准的情况下 ,近似地估计地表温度日较差 ,进而计算地表热惯量及相应的土壤含水量。用实例验证了该方法的可行性 ,为进一步推广应用奠定基础。
A simple method to estimate the daily range of surface temperature is presented by using daily arbitrary time NOAA AVHRR Graph data based on the soil temperature equation which can express the daily variation of soil temperature.Particularly,the method can be applied in the calculation of inverse soil moisture so that when the both times of maximum and minimum temperatures are not consistent with the times that are required by thermal inertia method,this method can approximately estimate the daily range of surface temperature and can calculate thermal inertia of surface and soil moisture. In this paper, the feasibility is demonstrated using real cases.
出处
《南京气象学院学报》
CSCD
北大核心
2001年第3期323-329,共7页
Journal of Nanjing Institute of Meteorology
基金
国家自然科学基金重大项目 49892 70
国家重点基础研究项目 G1 9980 40 91 1
