Annual Average Sea Ice Extent

The 365–day running average for sea ice extent is now lower than 9.98 million km² and dropping by about 8 thousand km² per month. The prognosis suggests 2019 may go lowest on record for all–year average.

Q: Where’s the data source for this plot?
A: Here: https://ads.nipr.ac.jp/vishop/#/extent
Q: How can anyone make an annual average graph?
A: Easy. Use a computer. Add all the ice for the latest 365 days, divide by that number of days.
Q: Why would I even do that?
A: Let’s say you want to know how much ice we have in 2019 compared to other years.