摘要
地表反照率表征地球表面对太阳辐射的反射能力,决定着地表与大气之间辐射能量的分配过程,是影响地球气候系统的关键变量。在全球变化日益突出的今天,地表反照率与全球变化的相互影响机制已经成为地球科学研究领域的热点问题之一。地表反照率的细微变化,会影响到地气系统的能量收支平衡,进而引起区域以至全球气候变化。详细介绍地表反照率影响因素、研究方法等方面的最新研究进展,并从全球变化的角度阐述地表反照率的研究动态及其研究方向。
Surface albedo is a critical consideration for energy balance at the land-air interface. It determines the allocation of radiant energy between the earth＇s surface and atmosphere. Changes in surface albedo affect the energy balance of land-air system, which could in turn lead to climate change. Land Use/Cover Change （LUCC） is an important element of global climate change. LUCC affects surface albedo, and thus climate change. Surface albedo is controlled by solar elevation angle, land surface nature, soil moisture, weather condition, etc. This paper presents an in-depth review of the driving factors of surface albedo. Conventional observations of surface albedo are point-based, and therefore have limited spatial representation. On the other hand, surface albedo retrieved by Re- mote Sensing （RS） could have a large spatial representation. However, RS-driven surthce albedo needs validation by ground-truth observations. Hence this paper reviews and epitomizes observational and RS-based analyses surface albedo. It also summarizes research progress in surface albedo in relation to global climate. Moreover, this review highlights the strengths, weaknesses and future directions of sufface-albedo/climate-change research. The points documented herein could profoundly augment current understanding about global climate change and related driving factors.
出处
《地球科学进展》
CAS
CSCD
北大核心
2011年第11期1217-1224,共8页
Advances in Earth Science
基金
国家重点基础研究发展计划项目“LUCC对陆地生态系统的影响机制与多尺度LUCC生态效应研究”(编号:2010CB950902)资助
作者简介
作者简介：肖登攀（1982-），男，河北张北人，博士研究生，主要从事地表能量平衡研究．E-mail：xiaodp．10b@igsnrr．ac．cn
通讯作者：陶倡禄（1970-），男，河南洛阳人，研究员，主要从事全球变化生态学和农林气象学研究．E-mail：taofl@igsnrr．ac．cn
