Polar Ice monitors.

Links to ice products.

Arctic - https://usicecenter.gov/Products/ArcticCharts

Antarctic - https://usicecenter.gov/Products/AntarcCharts

Data can be found by clicking product menu on page.

University of Bremen (since 73)

Graphs and data available.

https://seaice.uni-bremen.de/sea-ice-concentration/amsre-amsr2/time-series/

Sea Ice Denmark.

http://www.dcrs.dtu.dk/

NSIDC

https://nsidc.org/data/seaice_index/

JCOMM Ice Logistics portal

https://www.bsis-ice.de/IcePortal/Antarctica.html

ANTARCTICA TODAY Wisc-edu

Current temperatures.

http://amrc.ssec.wisc.edu/data/view-data.php?action=view_image&product=surface/plot/TAC.GIF

https://www.chartgo.com/share.do?id=866f06abaa