西北师范大学学报（自然科学版）2017，Vol.53Issue(6)：88-96,9.DOI:10.16783/j.cnki.nwnuz.2017.06.016
基于DEM的马衔山山顶辐射平衡特征分析
Analysis of radiation balance over terrain factors of Mahan Mountain based on DEM
摘要
Abstract
Based on 30 m × 30 m digital elevation model,this paper combined solar total radiation calculation model over rugged terrain with surface albedo retrieved,the spatial distribution of the total solar radiation and the short-wave net radiation of Mahan Mountain at 11:30 on July 23,2013 were obtained,and then the radiation characteristics of permafrost region are mainly analyzed.The results show that local terrain has strong influence on the spatial distribution of solar radiation.The sunny slope and ridge of flatter area can get more solar total radiation,the shady slope and valleys of steep area is smaller contrary.The permafrost regions is flat,which receives more solar total radiation and the surface albedo is small,large short-wave net radiation is larger.But due to the loss of latent heat of evaporation and thermal conductivity of dry peat layer is lower,the heat into the shallow soil is little.In addition,heat is mainly used for melting underground ice so that soil temperature is lower.Therefore,although the local terrain has a significant effect on regional radiation budget,the surface features and soil properties influence the distribution of energy distribution and contribute to the development and protection of permafrost.关键词
太阳辐射/短波净辐射/能量平衡/局地地形/马衔山Key words
solar radiation/net short-wave radiation/energy balance/local topography/Mahan Mountain分类
天文与地球科学引用本文复制引用
刘文惠,谢昌卫,李韧,胡国杰,朱小凡..基于DEM的马衔山山顶辐射平衡特征分析[J].西北师范大学学报（自然科学版）,2017,53(6):88-96,9.基金项目
中国科学院百人计划资助项目(51Y551831002) （51Y551831002）
