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冰川冻土 ›› 2007, Vol. 29 ›› Issue (4): 589-594.

• 冰冻圈与全球变化 • 上一篇    下一篇

珠穆朗玛峰北坡海拔6523m辐射平衡观测结果分析

蒋友严, 任贾文, 秦翔, 谢爱红, 王叶堂   

  1. 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
  • 收稿日期:2006-12-05 修回日期:2007-04-09 出版日期:2007-08-25 发布日期:2012-04-26
  • 基金资助:
    中国科学院知识创新工程重要方向项目(KZCX3-SW-344);国家自然科学基金项目(40501015);中国科学院知识创新工程重要方向项目(KZCX3-SW-339)资助

Radiation Balance Observation at an Elevation of 6523 m on the North Slope of Mount Qomolangma

JIANG You-yan, REN Jia-wen, QIN Xiang, XIE Ai-hong, WANG Ye-tang   

  1. State Key Laboratory of Cryosphere Science, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou Gansu 730000, China
  • Received:2006-12-05 Revised:2007-04-09 Online:2007-08-25 Published:2012-04-26

摘要: 利用2005年5月1日至7月22日在东绒布冰川海拔6523m的若普拉垭口架设的自动气象站获得的各辐射参数资料,分析了该地区总辐射、地面反射辐射、地面长波辐射、天空长波辐射的日平均变化和平均日变化,并计算了反射率和辐射平衡.结果表明:1)短波辐射的平均日变化都随着太阳高度角的增大而加强,并且总辐射和地面反射辐射的日平均变化有很好的相关性,观测期间二者的月平均值都在5月份最大.由于垭口新降雪较多,雪面的反射率也很高;2)天空长波辐射的平均日变化比地面长波辐射变化滞后2 h,且其日平均变化幅度比地面长波辐射的变化幅度大;3)净辐射的平均日变化随着太阳高度角的变化而变化,下午14:00时净辐射最大,其日平均变化在观测期间整体上有增大趋势.

关键词: 珠穆朗玛峰, 总辐射, 辐射平衡, 反射率

Abstract: Diurnal mean variation and variations of mean daily variations of global radiation,surface short-wave radiation,surface longwave radiation,atmospheric counter-radiation are analyzed by using the radiation parameters obtained from the automatic weather station over the Ruopula pass of the East Rongbuk Glacier(at an elevation of 6523 m) from May 1 to July 22,2005,the surface albedo and the radiation balance.The short-wave radiation has a big change with the solar elevation angle increasing,and the daily global radiation has a good correlation with the surface short-wave radiation.The surface albedo is higher due to new snow always falling.Diurnal variation of atmospheric counter radiation lags for 2 hours behind the surface long wave radiation change,with a daily variation larger than that of the surface long-wave radiation.Diurnal mean net radiation changes with solar elevation angle increasing.There is an increasing tendency of the daily radiation balance during the observing duration.

Key words: Mount Qomolangma, global radiation, radiation balance, albedo

中图分类号: 

  • P422.4