[1]张鹏飞,李国平.青藏高原西部地表反射率的合成分析[J].山地学报,2007,(06):649.
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青藏高原西部地表反射率的合成分析()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2007年06期
页码:
649
栏目:
山地学报
出版日期:
2007-11-15

文章信息/Info

作者:
张鹏飞;李国平;
成都信息工程学院高原大气与环境四川高校重点实验室;成都信息工程学院高原大气与环境四川高校重点实验室 四川成都610225;四川成都610225
关键词:
青藏高原地表反射率变化合成分析太阳高度角
文献标志码:
A
摘要:
利用中(国)日(本)青藏高原陆面过程合作试验(GAME/Tibet)设立于青藏高原西部狮泉河和改则两地自动气象站(AW S)1997~1998年观测的大气、辐射和土壤等资料,计算了两地的逐时地表反射率,并进行了日平均、月平均和日合成分析,据此讨论了青藏高原西部地表反射率的若干变化特征,并在计算了对反射率影响最大的因子——太阳高度角的基础上,着重讨论了青藏高原西部地表反射率的日变化特征。结果表明:夏半年,由于降水使土壤湿度增大,植被生长、地表反射率值较低;冬半年,受土壤湿度减小、雪盖覆盖影响,地表反射率值较高,12月平均值可达0.5以上。而地表反射率的日变化特征表现为,清晨、黄昏地表反射率高,中...

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更新日期/Last Update: 2007-11-15