| 青藏高原边缘积雪辐射特征 |
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| 引用本文： | 陈世强,吕世华,奥银焕,张宇,李锁锁,尚伦宇.青藏高原边缘积雪辐射特征[J].冰川冻土,2009,31(5):866-870. |
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| 作者姓名： | 陈世强 吕世华 奥银焕 张宇 李锁锁 尚伦宇 |
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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,甘肃省干旱气候变化与减灾重点实验室, 甘肃,兰州,730000;中国气象局,兰州干旱气象研究所, 甘肃,兰州,730020;中国科学院 寒区旱区环境与工程研究所,甘肃省干旱气候变化与减灾重点实验室, 甘肃,兰州,730000 |
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| 基金项目： | 国家自然科学基金重点项目(40975008);;中国气象局干旱气象科学研究基金项目(IAM200809)资助 |
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| 摘 要： | 利用中国陆地生态系统通量观测研究网络的玛曲站观测的一次降雪过程的资料,对青藏高原东部边缘冬季的降雪、积雪过程的辐射特征进行了分析.研究结果表明;积雪期晴天和降雪过程的向上短波辐射的峰值分别约为降雪前晴天的3和2倍.无积雪晴天地表反射率主要分布在0.175～0.36,新雪地表反射率主要分布在0.8～0.9.大气逆辐射变化较小,降雪过程的最大,积雪时的最小.地表长波辐射则为降雪前最大,降雪时最小.积雪覆盖的晴天比无积雪时的净辐射变化幅度减小,且早上由负转正的时间推迟.
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| 关 键 词： | 青藏高原边缘 积雪 辐射 |
Characteristics of the Radiation on Snow Cover at the Margin of the Tibet Plateau |
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| CHEN Shi-qiang,L Shi-hua,AO Yin-huan,ZHANG Yu,LI Suo-suo,SHANG Lun-yu.Characteristics of the Radiation on Snow Cover at the Margin of the Tibet Plateau[J].Journal of Glaciology and Geocryology,2009,31(5):866-870. |
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| Authors: | CHEN Shi-qiang L Shi-hua AO Yin-huan ZHANG Yu LI Suo-suo SHANG Lun-yu |
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| Institution: | 1.Laboratory of Arid Climatic Changing and Reducing Disaster of Gansu Province;Cold and Arid Regions Environmental and Engineering Research Institute;Chinese Academy of Sciences;Lanzhou Gansu730000;China;2.Lanzhou Institute of Arid Meteorology of China Meteorological Adminstration;Lanzhou Gansu730020;China |
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| Abstract: | Characteristics of radiation at a snowfall process and over snow cover in the margin of Tibet Plateau in winter were analyzed. The analysis was made by using the data of one snowfall process observed at Maqu station,which belongs to ChinaFlux Net. Results showed: upward shortwave radiation at the snowfall process and over snow cover is respectively double and triple as that without snow. Surface albedo varies mainly between 0^175 and 0^36 in a fine day without snow,and between 0^8 and 0^9 over new snow. The... |
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| Keywords: | margin of the Tibet Plateau snow cover radiation |
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