Helicopter-borne thermal infrared sea ice surface temperature images during the MOSAiC expedition, NetCDF format, version 2

This data set includes a series of surface temperature images for each of the 35 flights, which were performed between 02.10.2019 and 23.04.2020 during the MOSAiC expedition. There is one file for every flight. The flights can be identified by the event-related Device Operation label or Flight ID. The images have a temporal resolution of 1 Hz. The spatial resolution depends on the flight altitude and the incidence angle of the camera and can be tens of centimeters for the highest spatial resolution. The surface temperature is derived from the measured brightness temperature with a constant emissivity of 0.996. All data are ice drift corrected and georeferenced as well as provided with longitude and latitude coordinates. In addition, the position data of the helicopter as well as image corrections are included.

本数据集包含35次飞行任务各自对应的一系列地表温度图像，这些飞行任务于2019年10月2日至2020年4月23日期间在MOSAiC远征科考中开展。每次飞行任务对应一个独立数据文件。可通过与事件相关的设备操作标签（Device Operation label）或飞行编号（Flight ID）识别对应飞行任务。该系列图像的时间分辨率（temporal resolution）为1赫兹。空间分辨率（spatial resolution）取决于飞行高度与相机入射角度，最高空间分辨率可达数十厘米。地表温度由实测亮温（brightness temperature）推导得到，推导过程中采用固定发射率（emissivity）0.996。所有数据均经过冰漂移校正与地理配准，并附带经纬度坐标。此外，数据集还包含直升机位置数据与图像校正相关信息。