一种改进的遥感热惯量模型初探 |
| |
作者姓名: | 刘振华 赵英时 |
| |
作者单位: | 1. 华南农业大学, 广州 510642;
2. 中国科学院研究生院, 北京 100049 |
| |
基金项目: | 国家重点基础研究发展规划项目(G200077907)资助 |
| |
摘 要: | 本文改进了遥感热惯量模型,考虑到植被因素的影响,在植被覆盖区,使用双层模型中的土壤热能量平衡方程,同时在热传导方程的边界条件中引进显热通量和潜热通量,使热惯量模型的应用范围从裸土扩展到植被覆盖区.通过顺义地区的MODIS影像数据和同步野外测量数据对此模型进行验证,所获得的热惯量值与实测热惯量值进行比较,结果表明改进模型的实用性和可行性.
|
关 键 词: | 热惯量模型 热传导方程 土壤热惯量 地表显热 地表潜热 双层模型 |
收稿时间: | 2004-07-30 |
修稿时间: | 2004-11-03 |
An Improved Thermal Inertia Model |
| |
Authors: | LIU Zhen-Hua Zhao Ying-Shi |
| |
Institution: | 1.South China Agricultural University, Guangzhou 510642, China;2.Graduate School, Chinese Academy of Sciences, Beijing 100049, China |
| |
Abstract: | A simplified thermal inertia model is proposed. In the model, the surface sensible and latent fluxes are introduced into the boundary condition of thermal conductivity equation in order to extend the area of using the thermal inertia method. Furthermore,a two-layer model is applied to regions with better covered vegetation, which extends the scope of the thermal inertia method. Compared with field measured inertia, the result shows that the improved thermal model is feasible. |
| |
Keywords: | thermal inertia model thermal conductivity equation soil thermal inertia sensible flux latent flux two2layer model |
|
| 点击此处可从《》浏览原始摘要信息 |
| 点击此处可从《》下载免费的PDF全文 |
|