Total Sky Imager observations during POLARSTERN cruise PS122/3 on 2020-03-03@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 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.本数据集包含天空实拍影像。所用相机为佳能（PowerShot）品牌的全天空成像仪，安装于极星号（Polarstern）科考船的顶部。在MOSAIC北极科考实验第3航段（2020年2月至6月，作业区域覆盖北极洋、始发于朗伊尔城）期间，该相机完成了拍摄，其时间分辨率介于15秒至15分钟之间。本数据集记录了极星号科考船在近似天顶（zenith）方向捕捉到的天气状况与云量分布的可见光影像。此类观测数据可用于辅助解读大气辐射测量结果。