# Data fetched via HTTP from ['ftp://sidads.colorado.edu/DATASETS/NOAA/G02135/north/monthly/shapefiles/shp_median/median_extent_N_10_1981-2010_polyline_v3.0.zip']

# Data processed using the following steps:

unzip {input_dir}/median_extent_N_10_1981-2010_polyline_v3.0.zip -d {output_dir} 

ogr2ogr -lco ENCODING=UTF-8 -t_srs EPSG:3413 -clipdst {assets_dir}/latitude_shape_40_degrees.geojson -makevalid {output_dir}/final.gpkg {input_dir}/*.shp