Animation showing difference in artic ice cover between 1979 and 2016
Data required:
Download 1979 pngs from ftp://sidads.colorado.edu/pub/DATASETS/nsidc0051_gsfc_nasateam_seaice/final-gsfc/browse/north/daily/1979/
Download 2016 pngs from ftp://sidads.colorado.edu/pub/DATASETS/nsidc0081_nrt_nasateam_seaice/browse/north/
Make sure all pngs are in the same folder and rename them to nt_YYYYMMDD_n.png
Download nsidc_global_nt_final_and_nrt.txt.gz from https://sites.google.com/site/arctischepinguin/home/sea-ice-extent-area/data
Will require java.time library (joda-time-2.9.7.jar) in code folder of sketch.