摘要
采用HOCK的分布式能量物质平衡模型对老虎沟12号冰川消融期的物质平衡进行了模拟,时间步长为1 h,空间分辨率为30 m.模型结果利用物质平衡观测数据和气象站观测数据验证,模型模拟时期为2012年6月1日-9月30日.模型模拟结果表明,地形因子对太阳辐射影响相当显著;散射辐射在总辐射中的比例较大为39%,模拟期冰川表面物质平衡为-506 mm w.e..在模拟期整个冰川平均上净辐射占能量收入的84%,感热通量占有16%;消融耗热则是能量的主要支出占有62%,潜热通量占有能量支出的38%.
By using a 1-h temporal resolution and 30-m spatial resolution grid-based distributive surface mass-en- ergy model, the energy distribution and mass balance on the Laohugou No. 12 Glacier were simulated. The peri- od of simulation was from June 1 st to September 30 th, 2012. The simulated results were validated by solar and net radiation data from meteorological stations and measured mass-balance data, respectively. The simulated re- suits show that terrain factors have a considerably effect on solar radiation. Diffuse radiation accounts for 38% of global radiation. The mass balance averaged over the simulated period is 893 mm w. e. During the simulative pe- riod and over the glacier, the net radiation is the principal energy source （84%）, followed by the sensible het flux （ 16% ） ; whereas the main energy expenditure is the heat flux for snow/ice ablation （62%）, followed by the latent heat flux （38%）.
出处
《冰川冻土》
CSCD
北大核心
2014年第1期38-47,共10页
Journal of Glaciology and Geocryology
基金
国家重大科学研究计划项目(2013CBA01801)
国家自然科学基金项目(41201067
41371091
41271085
41271085)
冰冻圈科学国家重点实验室自主课题(SKLCS-ZZ-2012-01-05)资助
