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作者投稿 专家审稿 编辑办公 编委办公 主编办公

冰川冻土 ›› 2022, Vol. 44 ›› Issue (3): 1053-1062.doi: 10.7522/j.issn.1000-0240.2022.0098

• 冰冻圈水文与水资源 • 上一篇    下一篇


冯紫荆1(), 何天豪1, 汪少勇2, 何晓波2(), 高红凯1()   

  1. 1.华东师范大学 地理科学学院,上海 200241
    2.中国科学院 西北生态环境资源研究院 冰冻圈科学国家重点实验室,甘肃 兰州 730000
  • 收稿日期:2021-09-12 修回日期:2022-05-25 出版日期:2022-06-25 发布日期:2022-08-27
  • 通讯作者: 何晓波,高红凯 E-mail:fzjzh222@163.com;hxb@lzb.ac.cn;hkgao@geo.ecnu.edu.cn
  • 作者简介:冯紫荆,硕士研究生,主要从事寒区水文学研究. E-mail: fzjzh222@163.com
  • 基金资助:

The impacts of albedo on Dongkemadi Glacier runoff and mass balance simulation

Zijing FENG1(), Tianhao HE1, Shaoyong WANG2, Xiaobo HE2(), Hongkai GAO1()   

  1. 1.School of Geography Science,East China Normal University,Shanghai 200241,China
    2.State Key Laboratory of Cryospheric Science,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
  • Received:2021-09-12 Revised:2022-05-25 Online:2022-06-25 Published:2022-08-27
  • Contact: Xiaobo HE, Hongkai GAO E-mail:fzjzh222@163.com;hxb@lzb.ac.cn;hkgao@geo.ecnu.edu.cn



关键词: 反照率, 入射短波辐射, 冰川径流模拟, 冰川物质平衡模拟, 冬克玛底冰川


Albedo has been considered an important factor affecting the process of glacier runoff and mass balance, but still lack of quantitative studies. In this study, albedo and incoming shortwave radiation are taken into account in the glacier hydrological model FLEXG, and tested in the Dongkemadi River Basin, in the source region of the Yangtze River. To account for spatial heterogeneity, the basin was classified into 19 elevation bands at 50 m intervals, and was divided into 3 different aspects (north facing, south facing and west/east facing) for both glacier and non-glacier regions. Observed hydrology and meteorology data from 2005 to 2009, MODIS(MOD10A1) daily albedo product and daily incoming shortwave radiation product during ablation seasons (May-September) were used to force the models, and calibrate the parameters. The hydro-meteorological data and glacier mass balance data from 2010 to 2014 were used to validate model performance. Monte Carlo sampling was used to generate 2×104 sets of parameters within the prior range. Kling-Gupta efficiency (KGE) was used as an objective function to evaluate model performance in calibration. Then the best one percent of parameter sets was regarded as behavioral ones for further analysis and generate uncertainty ranges of the simulated runoff. The results showed that consideration of the albedo and incoming shortwave radiation could increase the model realism, including daily runoff, glacier mass balance, and the glacial runoff proportion. More specifically, the runoff simulation was improved from KGE=0.49 to KGE=0.51, the glacier mass balance simulation was improved from R2=0.67 to R2=0.83; and the glacier runoff proportion was increased from 63% to 66%, which is closer to the previous result obtained by isotopic hydrograph separation. This study illustrates that considering the albedo and incoming shortwave radiation can improve the performance and model realism of the degree-day factor model.

Key words: albedo, incoming shortwave radiation, runoff simulation, glacier mass balance simulation, Dongkemadi Glacier


  • P343.6