Total Sky Imager observations during POLARSTERN cruise PS122/4 on 2020-07-19@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.本数据集由天空场景的相机拍摄画面构成。该相机为佳能（Canon）Powershot系列制造的全天空成像仪（Total Sky Imager），安装于极星号（Polarstern）科考调查船的顶部。在MOSAiC科考实验第4航段（2020年6月至8月，从朗伊尔城出发前往北冰洋海域）期间，以1分16秒的时间分辨率采集了上述拍摄画面。本数据集呈现了极星号科考调查船上朝向近天顶方向记录的天气状况与云覆盖情况的可见光影像。该观测数据可用于辅助解读大气辐射测量结果。