Total Sky Imager observations during POLARSTERN cruise PS122/4 on 2020-07-04

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.

本数据集包含天空的相机拍摄影像。所用相机为佳能（Canon）生产的Powershot型号全天空成像仪（total sky imager），安装于极地号（Polarstern）科考船的顶部。在MOSAIC实验的第4航段（2020年6月至8月，航行路线为从朗伊尔城前往北冰洋）期间，该相机完成拍摄，其时间分辨率介于16秒至1分钟之间。本数据集呈现了极地号科考船在接近天顶（zenith）方向记录的气象状况与云量分布的可见光成像结果。此类观测数据可用于辅助解读大气辐射测量（atmospheric radiation measurements）结果。