Total Sky Imager observations during POLARSTERN cruise PS122/4 on 2020-07-06@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.本数据集由天空摄影画面组成。所用相机为佳能（Canon）博秀（Powershot）系列全天空成像仪（total sky imager），安装于极地号（Polarstern）科考船的顶部。在从朗伊尔城出发前往北冰洋的MOSAIC科考实验第4航段（2020年6月至8月）期间，该相机以1分钟至16秒的时间分辨率完成拍摄。本数据集记录了极地号科考船在近天顶方向观测到的天气状况与云量的可见光投影结果，此类观测数据可用于辅助解读大气辐射测量成果。