Published April 23, 2021
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Calculation of repeated accessibility (navigability) based on daily satellite images of sea ice concentration
- 1. Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar und Meeresforschung
Description
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.
Files
Files
(58.6 kB)
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md5:05825a65612981cea490d3efad352000
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13.6 kB | Download |
md5:74972b77665ef792cff9f9fa730261c0
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7.3 kB | Download |
md5:1a707e6bfff74f9b30c2ad396dd4d3f5
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7.6 kB | Download |
md5:c03d4cb96a3c57d7f2f336d7449373f8
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30.1 kB | Download |
Additional details
References
- https://seaice.uni-bremen.de/sea-ice-concentration/amsre-amsr2/
- Spreen, G., Kaleschke, L. and Heygster, G.: Sea ice remote sensing using AMSR-E 89 GHz channels, J. Geophys. Res. Atmos., 113(C2), https://doi.org/10.1029/2005JC003384, 2008