Arctic Sea Ice Extent: October 14, 2021
October 14, 2021: Over the past week the sea ice has now increased from last week by a rate of 9.58% from the level on 10/07/2021 of 5.719 M km2 to 6.325 M km2 for this week.
Blog
Arctic Sea Ice Extent: October 7, 2021
October 7, 2021: Over the past week the sea ice has now increased from last week by a rate of 8.59% from the level on 09/30/2021 of 5.228 M km2 to 5.719 M km2 for this week.
Arctic Sea Ice Extent: September 30, 2021
September 30, 2021: Over the past week the sea ice has now increased from last week by a rate of 6.64% from the level on 09/23/2021 of 4.881 M km2 to 5.228 M km2 for this week.
Arctic Sea Ice Extent: September 23, 2021
September 23, 2021: Over the past week the sea ice has now increased from last week by a rate of 2.89% from the level on 09/16/2021 of 4.740 M km2 to 4.881 M km2 for this week. This marks the end of the sea ice loss season, with a minimum value of 4.740 M km2 for 2021.
First Snowfall Date
With winter fast approaching, one commonly asked question we get is “What is the average date of the first snowfall of the season?” The answer is that it depends on the location. The table below shows the mean date of the first snowfall at 19 first-order weather stations, as well as the earliest and latest …
Arctic Sea Ice Extent: September 16, 2021
September 16, 2021: Over the past week the sea ice has now decreased from last week by a much lower rate of 1.50% from the level on 09/09/2021 of 4.812 M km2 to 4.740 M km2 for this week. The rate of loss at this time is about even with that in 2017, however, and well above the …
Arctic Sea Ice Extent: September 9, 2021
September 9, 2021: Over the past week the sea ice has now decreased from last week by a slightly lower rate of 4.52% from the level on 09/02/2021 of 5.040 M km2 to 4.812 M km2 for this week. The rate of loss at this time is about even with that in 2017, however, and well above the …
Arctic Sea Ice Extent: September 2, 2021
September 2, 2021: Over the past week the sea ice has now decreased from last week by a slightly greater rate of 5.64% from the level on 08/26/2021 of 5.341 M km2 to 5.040 M km2 for this week. The rate of loss at this time is about even with that in 2018, however, and well above the …
Arctic Sea Ice Extent: August 26, 2021
August 26, 2021: Over the past week the sea ice has now decreased from last week by a slightly greater rate of 4.49% from the level on 08/19/2021 of 5.592 M km2 to 5.341 M km2 for this week. The rate of loss at this time is not as low as in 2020, however, it is now above …
Arctic Sea Ice Extent: August 19, 2021
August 19, 2021: Over the past week the sea ice has now decreased from last week by a lesser rate of 3.60% from the level on 08/12/2021 of 5.801 M km2 to 5.592 M km2 for this week. The rate of loss at this time is not as low as in 2020, however, it is now above the …