期刊
JOURNAL OF EARTH SYSTEM SCIENCE
卷 117, 期 5, 页码 567-573出版社
INDIAN ACAD SCIENCES
DOI: 10.1007/s12040-008-0053-7
关键词
Surface energy balance; turbulent flux; radiation energy; snow-melt; data analysis; hydrology; modeling
资金
- Defence Research Development Organization [RD-PI-2004/SAS-35]
This study describes time series analysis of snow-melt, radiation data and energy balance for a seasonal snow cover at Dhundi field station of SASE, which lies in Pir Panjal range of the N-W Himalaya, for a winter season from 13 January to 12 April 2005. The analysis shows that mean snow surface temperature remains very close to the melting temperature of snow. It was found close to -1A degrees C for the complete observational period which makes the snow pack at Dhundi moist from its beginning. The average air temperature over this period was found to be 3.5A degrees C with hourly average variation from -5.5A degrees C to 13A degrees C. The snow surface at this station received a mean short wave radiation of 430W m(-2), out of which 298W m(-2) was reflected back by the snow surface with mean albedo value of 0.70. The high average temperature and more absorption of solar radiation resulted in higher thermal state of the snowpack which was further responsible for faster and higher densification of the snowpack. Net radiation energy was the major component of surface energy budget with a mean value of 83W m(-2). Bulk transfer model was used to calculate turbulent fluxes. The net energy was utilized for satisfying cold content and snow-melt by using measured snow surface temperature and density of snow pack. The mean square error between calculated and measured daily snow-melt was found to be approximately 6.6mm of water equivalent.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据