Ten years of monitoring areal snowpack in the Southern Alps using NOAA-AVHRR imagery, ground measurements and hydrological data
Ten years of monitoring areal snowpack in the Southern Alps using NOAA-AVHRR imagery, ground measurements and hydrological data
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DOI：
10.1002/(sici)1099-1085(199909)13:12/13
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发表时间：
1999-09
影响因子：
3.2
通讯作者：
R. Ranzi;G. Grossi;B. Bacchi
中科院分区：
文献类型：
--
作者：
R. Ranzi;G. Grossi;B. Bacchi
监测高山地区的积雪对于估计融雪季节的蓄水量非常重要，特别是考虑到灌溉、水力发电和供水。卫星上的诺阿-高级甚高分辨率辐射计传感器的图像具有成本效益和良好的时间分辨率，这表明这一信息来源是监测积雪覆盖范围的一个合适的候选来源。这些信息也可用于分布式融雪模型的验证。作为一项长期研究的结果，10年的积雪覆盖面积消耗曲线已估计使用遥感在7个流域的大小大于400平方公里的南阿尔卑斯山。卫星图像与详细的地形数据和积雪深度和密度的一些地面测量耦合提供了北方意大利，马焦雷湖，科莫湖，伊塞奥，伊德罗湖和加尔达湖上游的雪水当量的区域估计。流域水当量估计值进行比较，从水文水平衡方程中使用的两个选定的流域和计算不同的融雪季节的值。
Monitoring snow cover in alpine areas is important for the estimation of the water storage during the snowmelt season, especially in view of irrigation, hydropower production and water supply. Cost-efliciency and fine temporal resolution of images from the satellite-borne NOAA-AVHRR sensor indicate this source of information as a suitable candidate for monitoring snow cover extent. This information can also be used for validation of distributed snowmelt models. As a result of a long-term study, ten years of snow covered area depletion curves have been estimated using remote sensing in seven watersheds of size larger than 400 km 2 in the Southern Alps. Coupling of satellite imagery with detailed topographic data and some ground measurements of snowpack depth and density provides regional estimates of snow water equivalent in northern Italy, upstream of Lakes Maggiore, Como, Iseo, Idro, and Garda. The basin water equivalent estimates are compared with the values obtained from the hydrological water balance equation used in two of the selected watersheds and computed for different snowmelt seasons.