Surface brightness temperature images measured by an infrared camera installed on RV POLARSTERN during expedition PS131 (ATWAICE) (June - August 2022, Fram Strait/East Greenland) ...

• Main Authors: Rückert, Janna Elisabeth, Spreen, Gunnar, Huntemann, Marcus, Niehaus, Hannah, Walbröl, Andreas
• Format: Dataset
• Language: unknown
• Published: PANGAEA 2024
• Subjects: Arctic; brightness temperature; infrared imagery; marginal ice zone; ocean temperature; PS131; Sea ice; Binary Object; Binary Object File Size; Binary Object Media Type; Binary Object MD5 Hash; Underway cruise track measurements; Infrared head camera, InfraTec, VarioCAM HDx; Polarstern; Arctic Amplification AC3; East Greenland; Fram Strait; Greenland
• Online Access: https://dx.doi.org/10.1594/pangaea.967576; https://doi.pangaea.de/10.1594/PANGAEA.967576

During the Polarstern cruise PS131 infrared (IR) brightness temperatures of the surface (open ocean and sea ice) were recorded from onboard the vessel with a down-looking infrared camera (Infrared VarioCAM HDx head camera from InfraTec) that was installed on starboard on the upper deck (at around 21.5 m from sea level ('Peildeck')). The viewing angle (off-nadir) was around 70° and the camera has a field of view of 57.1° × 44.4°. Each image has a size of 640 × 480 IR pixels. The images are stored as netCDF files where one file includes data from one day. For each image, latitude and longitude information are included. They are obtained from the mastertrack of the ship (doi:10.1594/PANGAEA.950999). In addition the dataset contains the viewing angle for each image obtained from an auxiliary inertial measurement unit (IMU) installed on the IR camera that was resampled to 2 seconds. Missing data of the IMU was filled by the average of the existing angle measurements of the respective day or, if that was not ... : The data files are netCDF files (one per day) with a time coordinate. The brightness temperature (IR) images (variable called temps) have the spatial dimensions of 480x640. In addition, the variables latitude, longitude and viewing_angle are included. ...