Total Sky Imager observations during POLARSTERN cruise PS122/4 on 2020-07-15@en

The dataset consist of camera shots of the sky. The camera - a total sky imager manufactured by Canon (Powershot) - was mounted at the top of the Research Vessel Polarstern. At the leg4 (from June until August 2020) of the MOSAIC experiment from Longyearbyen - Arctic Ocean this camera shots were taken with a temporal resolution between 1 minute and 16 seconds. The dataset represents the visible projection of weather conditions and cloud cover recorded on the vessel Polarstern in the direction near the zenith. These observations are useful for the interpretation of the atmospheric radiation measurements.本数据集包含天空实拍影像。所用拍摄设备为佳能（Canon）PowerShot系列全天空成像仪（total sky imager），安装于极星号（Polarstern）科考船的船顶。在MOSAIC实验的第4航次（2020年6月至8月，航行起始于朗伊尔城，作业区域覆盖北冰洋）中，该相机以介于16秒至1分钟的时间分辨率进行拍摄。本数据集呈现了极星号科考船在接近天顶方向记录的天气状况与云量覆盖情况的可见光成像结果，此类观测数据可用于辅助大气辐射测量结果的解译。