Total Sky Imager observations during POLARSTERN cruise PS122/3 on 2020-05-30

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 leg 3 (from February until June 2020) of the MOSAIC experiment from Arctic Ocean - Longyearbyen this camera shots were taken with a temporal resolution between 15 minutes and 15 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.本数据集包含相机拍摄的天空影像。所用相机为佳能（Canon）PowerShot系列全天空成像仪，安装于极星号（Polarstern）科考船顶部。在北冰洋-朗伊尔城海域开展的MOSAIC科考实验第3航段（2020年2月至6月）期间，该相机以15秒至15分钟的时间分辨率采集了上述影像。本数据集呈现了极星号船上沿近似天顶方向记录的气象状况与云量可见投影结果。此类观测数据可用于大气辐射测量的解译分析。