Calculation of repeated accessibility (navigability) based on daily satellite images of sea ice concentration

• Main Authors: Pehlke, Hendrik, Brey, Thomas, Konijnenberg, Rebecca, Teschke, Katharina
• Format: Other/Unknown Material
• Language: English
• Published: 2021
• Subjects: sea ice concentration; satellite images; navigability; R language; Southern Ocean; Arctic seas; Arctic; Sea ice
• Online Access: https://zenodo.org/record/4714531; https://doi.org/10.5281/zenodo.4714531

The following downloadable R scripts for calculating the repeated accessibility are available here: "Download of daily sea ice raster" - The R script automatically downloads all GeoTiffs from IUP, University of Bremen, and saves them in the directory of your choice. "Existing and missing data" - The R script uses the downloaded GeoTiffs to create a table showing for which days satellite images are available and for which days they are not. "Information of GeoTiffs" - The R script extracts important metadata of the downloaded GeoTiffs such as geographical projection, spatial extent and maximum value. A metadata table is created. "Repeated accessibility" - The R script performs the repeated accessibility calculation based on a selectable threshold of sea ice concentration.