Total Sky Imager observations during POLARSTERN cruise PS122/4 on 2020-07-11

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.

本数据集由天空实拍影像组成。所用相机为佳能（Canon）博秀（Powershot）系列全天空成像仪（total sky imager），安装于极星号（Polarstern）研究船的顶部。在MOSAIC科考实验的第4航次（2020年6月至8月，航次起点为朗伊尔城，航行区域为北冰洋）期间，该相机以16秒至1分钟的时间分辨率进行拍摄。本数据集记录了极星号科考船在接近天顶方向所捕获的、反映气象条件与云量覆盖情况的可见光影像。此类观测数据可用于辅助解读大气辐射测量结果。