Areal distribution of snow water equivalent evaluated by snow cover monitoring
Areal distribution of snow water equivalent evaluated by snow cover monitoring
复制标题
通过积雪监测评估雪水当量的面积分布
DOI：
10.1029/wr017i005p01480
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发表时间：
1981
影响因子：
5.4
通讯作者：
A. Rango
中科院分区：
文献类型：
--
作者：
J. Martinec;A. Rango
提出了一种确定山区盆地积雪最大季节水当量的面积分布方法。由于在偏远、人迹罕至的地区没有足够的直接测量密度，融化季节开始时积雪被重新构成。利用陆地卫星数据监测网格单元中积雪的消失，计算融化积雪所需的摄氏天数，并计算融化积雪的水当量。重建水当量值可用于冬季降水测量的改正。与有限的点测量相结合，这些新的面积量数据可以改善积雪储量的评估，用于季节性流量预测。
A method is proposed to determine the areal distribution of the maximum seasonal water equivalent of snow in mountain basins. Because a sufficient density of direct measurements is not available in remote, inaccessible areas, the accumulation of snow at the start of the melting season is reconstituted. The disappearance of snow in grid units is monitored using Landsat data, the number of degree days necessary to melt the snow is totalized, and the water equivalent of the snow melted is calculated. The reconstituted water equivalent values can be used to correct precipitation measurements in winter. Together with limited point measurements these new areal data can improve the evaluation of snow reserves for seasonal discharge forecasts.