Musk_Ox_census_area_Snow_cover

The snow cover is computed for the parts of the musk ox census area that is visible from the slope of Zackenberg where the automatic cameras are placed. Please find link to the shapefile for the region below. Photos from three different camera positions are orthorectified and mosaicked together and the snow cover is computed based on these images. The dataset starts in 2008, but 2009 is missing, because there weren't enough cloudfree days during the snow melting period. The images are captured every day at 13:20, which is solar noon in the Zackenberg valley.本数据集针对麝牛（Musk Ox）普查区域中，可从部署自动相机的扎科恩贝格山坡观测到的部分，计算积雪覆盖范围。下文提供了该区域的矢量形状文件（Shapefile）下载链接。 来自三个不同相机点位的影像均经过正射校正与影像镶嵌拼接，积雪覆盖范围即基于这些影像计算得到。该数据集的时间序列始于2008年，但缺失2009年的数据，原因是融雪期内有效无云天数不足。影像每日于13:20采集，此时为扎科恩贝格山谷的太阳正午时刻。