From observation to the quantification of snow processes with a time-lapse camera network
From observation to the quantification of snow processes with a time-lapse camera network
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DOI：
10.5194/hess-17-1415-2013
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发表时间：
2013-04
影响因子：
6.3
通讯作者：
J. Garvelmann;S. Pohl;M. Weiler
中科院分区：
文献类型：
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作者：
J. Garvelmann;S. Pohl;M. Weiler
在2010/2011年和2011/2012年冬季，使用45台空间分布的延时相机网络，以每小时的间隔对三个中纬度中海拔山区集水区的降雪过程和积雪特性进行连续观测。进行了简单的技术修改，以便能够在任何地点部署标准数码相机。应用图像分析软件从数字图像中提取积雪深度、地表覆盖和冠层截留等信息。此外，分布式设计的摄像机网络，它可以识别海拔的雪雨界面的任何降水事件，这是非常有帮助的冬季洪水事件的解释所造成的积雪融化。所有这些分析的示例性数据显示这种创新方法的应用的潜在领域。研究结果表明，应用数字延时摄影是一种合适的技术来观察季节性积雪的空间分布和时间演变在山区环境。
A network of 45 spatially distributed time-lapse cameras was used to carry out a continuous observation of snow processes and snow cover properties throughout three mid-latitude medium elevation mountain catchments in hourly intervals during the winter seasons of 2010/2011 and 2011/2012. A simple technical modification was conducted to enable the deployment of the standard digital cameras in any location. Image analysis software was applied to extract information about snow depth, surface albedo and canopy interception from the digital images. Furthermore, the distributed design of the camera network made it possible to identify the elevation of the snow rain interface for any precipitation event which is very helpful for the interpretation of winter flooding events resulting from snow melt. Exemplary data for all these analyses is presented to show the potential fields of application of this innovative approach. Study results prove that the application of digital time-lapse photography is an appropriate technique to observe the spatial distribution and temporal evolution of seasonal snow covers in a mountainous environment.