摘要
地表反照率是陆面过程模式及气候模拟研究中的一个重要参数,地表反照率的变化会改变整个地气系统的能量收支平衡,并引起局地以至全球的气候变化。不同下垫面地表反照率存在明显的差异,中国区域地表反照率的空间分布也存在明显的区域差异。遥感反演地表反照率在空间上具有较高的精度,但反演结果很难直接应用于陆面过程模式。各种陆面模式对地表反照率计算主要基于陆面土地覆盖分类,包含了许多先验的预定参数,由于某些过程处理中的简化假设,从而对地表反照率的计算带来一定的误差。
As an important parameter in the research of Land Surface Model and Climate Model,the change of albedo influenced the energy balance in the Earth-atmospheric System,leaded to climatic change in the world.The albedo of different plants function type had observably difference,and there was observably difference in the dimensional？distribution of surface albedo in China.The spatial distribution of surface albedo calculated with the remote sensing data was veracious,but the calculate result can＇t be used in the Land Surface Model directly.The calculation of albedo in different Land Surface Model was based on plants function type,the calculate results were not exactly because it comprised some parameters which were initialized subjectively.
出处
《高原山地气象研究》
2010年第2期79-83,共5页
Plateau and Mountain Meteorology Research
基金
中国气象局成都高原气象研究所高原气象开放实验室课题基金项目(LPM2009018)
关键词
地表反照率
遥感
模拟
surface albedo
remote sensing
simulate
