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冰川冻土 ›› 2014, Vol. 36 ›› Issue (5): 1101-1110.doi: 10.7522/j.issn.1000-0240.2014.0132

• 冰冻圈与全球变化 • 上一篇    下一篇

喜马拉雅山珠穆朗玛峰北坡绒布冰川度日因子研究

刘伟刚1,2, 效存德2,3, 刘景时4, 王建2, 王航5, 柳景峰2, 刘娜6, 张通2, 林霞7, 邓诗光8   

  1. 1. 中国气象局 兰州干旱气象研究所/甘肃省干旱气候变化与减灾重点实验室/中国气象局 干旱气候变化与减灾重点实验室, 甘肃 兰州 730020;
    2. 中国科学院 寒区旱区环境与工程研究所 冰冻圈科学国家重点实验, 甘肃 兰州 730000;
    3. 中国气象科学研究院, 北京 100081;
    4. 中国科学院 青藏高原研究所, 北京 100101;
    5. 吉林省气象服务中心, 吉林 长春 130000;
    6. 国家气象信息中心, 北京 100081;
    7. 山东省泰安市第一中学, 山东 泰安 271000;
    8. 黑龙江省伊春市乌伊岭区气象局, 黑龙江 乌伊岭 153038
  • 收稿日期:2014-03-03 修回日期:2014-05-10 出版日期:2014-10-25 发布日期:2014-11-19
  • 通讯作者: 王航, E-mail:wang2hang2@163.com E-mail:wang2hang2@163.com
  • 作者简介:刘伟刚(1980-), 男, 山东莱芜人, 副研究员, 2010年在中国科学院寒区旱区环境与工程研究所获博士学位, 现主要从事寒旱区水文和干旱过程研究. E-mail:liuweig@lzb.ac.cn
  • 基金资助:

    国家重大科学研究计划(2013CBA01808);国家自然科学基金项目(41101073);国家重点基础研究发展计划(973计划)项目(2007CB411503);冰冻圈科学国家重点实验室开放基金项目(SKLCS 2010-07)资助

Study of the degree-day factors on the Rongbuk Glacier in the Mt. Qomolangma, Central Himalayas

LIU Weigang1,2, XIAO Cunde2,3, LIU Jingshi4, WANG Jian2, WANG Hang5, LIU Jingfeng2, LIU Na6, ZHANG Tong2, LIN Xia7, DENG Shiguang8   

  1. 1. Institute of Arid Meteorology, China Meteorological Administration/Key Laboratory of Arid Climatic Change and Disaster Reduction of Gansu Province/Key Laboratory of Arid Climate Change and Disaster Reduction of China Meteorological Administration, Lanzhou 730020, China;
    2. State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
    3. Chinese Academy of Meteorological Sciences, Beijing 100081, China;
    4. Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China;
    5. Meteorological Service Center of Jilin Province, Changchun 130000, China;
    6. National Meteorological Information Center, Beijing 100081, China;
    7. No.1 Middle School of Tai'an, Tai'an 271000, Shandong, China;
    8. Wuyiling Meteorological Bureau, Wuyiling 153038, Heilongjiang, China
  • Received:2014-03-03 Revised:2014-05-10 Online:2014-10-25 Published:2014-11-19

摘要:

根据喜马拉雅山珠穆朗玛峰绒布冰川消融资料和同期气温数据, 分析了该冰川度日因子时空变化. 研究结果显示: 绒布冰川度日因子随海拔升高而增加, 海拔5 260 m、5 350 m、5 450 m、5 500 m 和5 750 m处冰川度日因子平均值分别为3.27 mm·℃-1·d-1、8.21 mm·℃-1·d-1、23.19 mm·℃-1·d-1、46.41 mm·℃-1·d-1和42.05 mm·℃-1·d-1; 不同厚度表碛下的冰川度日因子有所差异; 但对同一观测点来说, 度日因子随时间变化较小; 在喜马拉雅山南北坡海拔<5 350 m 的地区, 冰川度日因子普遍较小(<10.5 mm·℃-1·d-1); 而在南北坡海拔>5 350 m的地区, 度日因子普遍较大(大部分>15.8 mm·℃-1·d-1), 相比南坡, 喜马拉雅山北坡冰川度日因子更大.

关键词: 喜马拉雅山, 珠穆朗玛峰, 度日因子, 冰川消融

Abstract:

Based on data of meteorology and glacier ablation observed in 1959 and 2009, spatiotemporal variation of degree-day factor (DDF) on the Rongbuk Glacier in the Mt. Qomolangma of Central Himalayas was analyzed in this paper. It is found that DDF increased with altitude; the values of DDF at 5 260 m a.s.l., 5 350 m a.s.l., 5 450 m a.s.l., 5 500 m a.s.l. and 5 750 m a.s.l. were 3.27, 8.21, 23.19, 46.41 and 42.05 mm·℃-1·d-1, respectively. DDF varied less temporally for the same observational site. There was a few difference of DDF between observational sites with different thicknesses of debris. Generally DDF was less than 10.5 mm·℃-1·d-1 on both northern and southern slopes of the Himalayas at the altitude below 5 350 m a.s.l. When altitude was higher than 5 350 m a.s.l., DDFs on northern slopes of the Himalayas were larger than those on southern ones, with higher DDF in both slopes of the Himalayas (more than 15.8 mm·℃-1·d-1 in most areas).

Key words: Himalayas, Mt. Qomolangma (Mt. Everest), degree-day factor, glacier ablation

中图分类号: 

  • P343.6