基于过程的雪盖模型研发Ⅱ——应用

A Process-based Snowmelt Model:Ⅱ-Application

通过美国科罗拉多山脉Niwot Ridge 006号雪坑1997年~1999年实测数据对Snow Column Model进行验证;并以此为基础,通过1996年~1999年实测资料计算辐射数据和湍流通量在消融期各小时变化均值E和标准差σ;设置气候变化情景,分析入射短波辐射、反射短波辐射和潜热通量在E±σ变幅范围内,雪盖厚度、密度和雪水当量变化,探索雪盖参量对气候变化的响应。

The data from 1997 to 1999 of snowpit 006 in Niwot Ridge is used for the validation of process-based 1D energy balance Snow Column Model, and based on hourly data of radiation and turbulent flux in May during 1996 and 1999, the expected value （E） and standard deviation （σ） among the four years in each hour are obtained and used for scenarios setup. The scenarios are set following the changes of incident radiation, reflected radiation and latent heat flux varied within the range of E±σ, and then the responses of snow water equivalent （ SWE）, snowpack depth and snowpack density to those scenarios are analyzed for finding the impacts of the parameters of snowpack on climate change.