| 藏北高原多年冻土区地表反照率特征分析 |
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| 引用本文： | 肖瑶,赵林,李韧,姚济敏,孙琳婵,乔永平,焦克勤.藏北高原多年冻土区地表反照率特征分析[J].冰川冻土,2010,32(3). |
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| 作者姓名： | 肖瑶 赵林 李韧 姚济敏 孙琳婵 乔永平 焦克勤 |
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| 作者单位： | 中国科学院,寒区旱区环境与工程研究所,甘肃,兰州,730000;中国科学院,冰冻圈科学国家重点实验室,甘肃,兰州,730000;中国科学院,研究生院,北京,100049;中国科学院,寒区旱区环境与工程研究所,甘肃,兰州,730000;中国科学院,冰冻圈科学国家重点实验室,甘肃,兰州,730000 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)项目，国家自然科学基金，中国科学院青藏高原冰冻圈观测试验研究站资助 |
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| 摘 要： | 利用青藏高原冰冻圈观测研究站西大滩、五道梁和唐古拉自动气象站(AWS)2006—2007年的辐射观测资料,分析了藏北高原多年冻土区不同下垫面的地表反照率特征.结果表明:该地区地表反照率在四季都表现出明显的日变化特征,呈U形,早晚大,中午小.日平均和月平均地表反照率有相同的年变化特征,且冬半年的地表反照率远远大于夏半年.受积雪的影响,地表反照率年均值较高,夏季最小,冬季最大,春季大于秋季.针对3种不同植被类型的下垫面,在四季反照率都有高寒草甸(唐古拉)高寒草原(西大滩)荒漠草原(五道梁)的特点.
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| 关 键 词： | 多年冻土区 地表反照率 藏北高原 日变化 下垫面 |
The Characteristics of Surface Albedo in Permafrost Regions of Northern Tibetan Plateau |
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| XIAO Yao,ZHAO Lin,LI Ren,YAO Ji-min,SUN Lin-chan,QIAO Yong-ping,JIAO Ke-qin.The Characteristics of Surface Albedo in Permafrost Regions of Northern Tibetan Plateau[J].Journal of Glaciology and Geocryology,2010,32(3). |
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| Authors: | XIAO Yao ZHAO Lin LI Ren YAO Ji-min SUN Lin-chan QIAO Yong-ping JIAO Ke-qin |
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| Institution: | XIAO Yao1,2,3,ZHAO Lin 1,LI Ren 1,YAO Ji-min 1,SUN Lin-chan 1,QIAO Yong-ping 1,JIAO Ke-qin 1,2(1.Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China,2.State Key Laboratory of Cryospheric Sciences,China 3.Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | Based on the observed radiation data at automatic weather stations including Xidatan(XDT),Tanggula(TGL) and Wudaoliang(WDL)(operated by Cryosphere Research Station on Qinghai-Xizang Plateau,CAS) in 2006 and 2007,characteristics of surface albedo under different surface conditions in permafrost regions of Northern Tibetan Plateau are analyzed.The results indicated that surface albedo in these regions shows obvious diurnal variation characteristics in the four seasons.The diurnal variation curves present Usha... |
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| Keywords: | permafrost regions surface albedo Northern Tibetan Plateau diurnal variation underling surface |
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