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冰川冻土 ›› 2006, Vol. 28 ›› Issue (4): 477-484.

• 冰冻圈与全球变化 • 上一篇    下一篇

天山南坡科契卡尔巴西冰川物质平衡初步研究

张勇1, 刘时银1,2, 丁永建1, 李晶1, 上官冬辉1   

  1. 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;
    2. 中国科学院, 青藏高原研究所, 北京, 100029
  • 收稿日期:2006-05-23 修回日期:2006-06-09 出版日期:2006-08-25 发布日期:2012-04-26
  • 基金资助:
    国家自然科学基金项目(40371026,4050100790202013);中国科学院知识创新工程重大项目(KZCX3-SW-345KZCX3-SW-339);中国科学院寒区旱区环境与工程研究所冰川学冻土学人才培养基金项目(J0130084)资助

Preliminary Study of Mass Balance on the Keqicar Baxi Glacier on the South Slopes of Tianshan Mountains

ZHANG Yong1, LIU Shi-yin1,2, DING Yong-jian1, LI Jing1, SHANGGUAN Donghui1   

  1. 1. Key Laboratory of Cryosphere and Environment, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou Gansu 730000, China;
    2. Institute for Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100029, China
  • Received:2006-05-23 Revised:2006-06-09 Online:2006-08-25 Published:2012-04-26

摘要: 基于2003—2005年考察期间观测的气温与降水资料,运用度日物质平衡模型模拟了天山南坡科契卡尔巴西冰川近期的物质平衡变化状况.结果表明:度日物质平衡模型模拟的冰川物质平衡值与实测值的变化趋势基本一致,模型模拟结果较为理想;2003/2004年度和2004/2005年度两个物质平衡年的平均物质平衡值分别为-494和-384 mm,平衡线高度(ELA)比20世纪70年升高了300 m左右.由此可见,在由暖干向暖湿转型的气候背景下,尽管降水增加显著,但强烈的升温导致科契卡尔巴西冰川处于强烈的物质亏损状态.

关键词: 科契卡尔巴西冰川, 度日物质平衡模型, 物质平衡, 暖湿

Abstract: Since the late 1980s,there is a strong signal of climate shift from warm-dry to warm-humid in Northwest China.The mean air temperature of West China from 1987 to 2000 had increased by 0.7℃ as compared with the that from 1961 to 1986.With the rapid rising of air temperature,the annual mean precipitation during the period from 1987 to 2000 increased by 11% in northern Xinjiang and 32% in southern Xinjiang relative to that from 1960 to 1986 within the Tarim basin.In this paper,mass balance of the Keqicar Baxi Glacier in the Tarim River basin,Northwest China,is simulated under the condition of climate change,using a degree-day glacier mass-balance model.The glacier has detailed mass-balance measurement over the period 2003-2005.The modeling results are in good agreement with the measured variations in the mass balance changing with elevation during 2003-2005.The mean mass balance was-494 and-384 mm in the mass balance year of 2003-2004 and 2004-2005,respectively;compared to that in the 1970s,the equilibrium line altitude shifted up about 300 m.It can be seen that,though precipitation increases significantly,there is in the state of strong mass loss on the Keqicar Baxi Glacier due to the air temperature rising significantly.This study aims at providing a method for modelling the mass balance in the glacierised areas of the Tarim River basin,especially,in the non-monitored glacierised areas of Northwest China,as well as to assess the change in the cryosphere due to climate change.

Key words: Keqicar Baxi Glacier, degree-day mass-balance model, mass balance, wet and warm

中图分类号: 

  • P343.6