# Data accessed manually by a human following instructions:

Dataset can be found on the European Space Agency (ESA)
Climate Change Initiative (CCI) products website
(http://products.esa-icesheets-cci.org). Data are free to
download after simple registration requiring `first.last` name
and `affiliation`. No password is required.

# Data processed using the following steps:

unzip {input_dir}/greenland_iv_250m_s1_20191214_20200131_v1_3.zip -d {output_dir} greenland_iv_250m_s1_20191214_20200131_v1_3/greenland_iv_250m_s1_20191214_20200131_v1_3.nc

gdalwarp -t_srs EPSG:3413 -r bilinear NETCDF:{input_dir}/greenland_iv_250m_s1_20191214_20200131_v1_3/greenland_iv_250m_s1_20191214_20200131_v1_3.nc:land_ice_surface_velocity_magnitude {output_dir}/warped.tif

gdalwarp -cutline {assets_dir}/greenland_rectangle.geojson -crop_to_cutline -co COMPRESS=DEFLATE {input_dir}/warped.tif {output_dir}/esa_cci_velocity_magnitude.tif

gdal_translate -co TILED=YES -co COMPRESS=DEFLATE -co PREDICTOR=3 {input_dir}/esa_cci_velocity_magnitude.tif {output_dir}/compressed.tif

cp {input_dir}/compressed.tif {output_dir}/esa_cci_velocity_magnitude.tif && gdaladdo -r average {output_dir}/esa_cci_velocity_magnitude.tif 2 4 8 16