| 冰雪反照率研究进展 |
| |
| 引用本文： | 蒋熹.冰雪反照率研究进展[J].冰川冻土,2006,28(5):728-738. |
| |
| 作者姓名： | 蒋熹 |
| |
| 作者单位： | 中国科学院,寒区旱区环境与工程研究所,冰冻圈与环境联合重点实验室,甘肃,兰州,730000;中国科学院研究生院,北京,100039 |
| |
| 基金项目： | 中国科学院百人计划项目“江河源浅冰芯气候环境记录研究”(2004401)，中国科学院知识创新工程重要方向项目(KZCX3-SW-339)，国家重点基础研究发展规划项目(2005CB422003)资助 |
| |
| 摘 要： | 冰雪反照率在地气能量平衡中起重要作用,其大小取决于两个方面,即冰雪面的反射属性以及大气或天空的状况.因此,影响冰雪反照率的因素除其自身的物理属性如积雪粒径、密度、含水量、杂质和污化程度等外,云对冰雪反照率也产生影响,从而使冰雪的反照率呈现出日变化、季节变化和空间变化规律.最后,评述了利用数值模式及卫星遥感反演方法对冰雪反照率的相关研究进展.
|
| 关 键 词： | 冰雪 反照率 日变化 季节变化 能量平衡 遥感反演 |
| 文章编号： | 1000-0240(2006)05-0728-11 |
| 收稿时间： | 01 21 2006 12:00AM |
| 修稿时间： | 04 8 2006 12:00AM |
Progress in the Research of Snow and Ice Albedo |
| |
| JIANG Xi.Progress in the Research of Snow and Ice Albedo[J].Journal of Glaciology and Geocryology,2006,28(5):728-738. |
| |
| Authors: | JIANG Xi |
| |
| Institution: | 1. Key Laboratory of Cryosphere and Environment, CAREERI, CAS, Lanzhou Gansu 730000, China; 2. Graduate University of the Chinese Academy of Sciences, Beijing 100049, China |
| |
| Abstract: | The snow and ice albedo plays a key role in the energy balance between the earth and atmosphere.Its variation depends up two aspects,i.e.the reflecting properties of snow/ice and the sky conditions.So,many factors affect the snow and ice albedo,such as physical properties of snow and ice,including grain size,density,water content,impurity and so on.Again,cloud affects the albedo,because it changes the incoming solar radiation and its spectral distribution.In view of the changes in reflecting properties of snow/ice and the sky conditions,the albedo of snow and ice exhibits its diurnal,seasonal and spatial variations.The progress of numerical model and satellite remote sensing in snow/ice albedo are also reviewed in this article,especially focused on the Bidirectional Reflectance Distribution Function(BRDF) and the imperfection of albedo inversion in remote sensing. |
| |
| Keywords: | snow and ice albedo diurnal variation seasonal variation energy balance remote sensing |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
