[MASK]: MEaSUREs ITS_LIVE Antarctic Annual Ice Masks, Version 1 #44
Labels
antarctica
documentation
Improvements or additions to documentation
info:mask
Information about masks
Milestone
Overview
Here's an animation of the final product:
![Calving animation](figures/screenshot.png)
Upstream
Radarsat Antarctic Mapping Project (RAMP) Antarctic Mapping Mission-1 coastline used
after_coast_continuous.shp
file for late 1997 and the RAMP Modified Antarctic Mapping Missioncst2000line.shp
, which corresponds to late 2000.MODIS Mosaic of Antarctica coastlines We use coastlines provided by the MODIS Mosaic of Antarctica (MOA) project for the years 2004, 2009 and 2014.
Circum-Antarctic landfast sea ice extent, 2000-2018 Annually from March 2000 to March 2017, we interpolate ice-sheet areas in a 1-km-resolution optical- and thermal-band Moderate Resolution Imaging Spectroradiometer (MODIS)-based fast-ice dataset to our 240-m-resolution grid.
Sentinel 1a Annually from March 2015 to March 2021, we digitize coastlines using the same methods that were used to generate the annual MODIS-based fast-ice dataset, but we apply the methods to Sentinel 1a radar image mosaics from http://seaice.dk/ that were collected concurrently with the MODIS data each March, thus providing two independent datasets obtained from different types of sensor.
Internal
Type: raster
Resolution if raster: 240 m
Projection information: EPSG 3031
Downstream
Raster data available here for now. The dataset is currently in review at NSIDC. We've submitted a revised version of the NetCDF which will be posted to NSIDC soon. Only the metadata have been changed in the revisions, and the ice mask data itself will not change from the original version here.
A vectorized version of the data is available here.
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