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The Alaska State Climate Center
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Arctic Sea Ice Extent

Arctic Sea Ice Extent: February 15, 2024

February 15, 2024:  The sea ice has increased again this week, and at a rate of 2.04% (higher than last week’s rate of -0.60%), from the level on 02/08/2024 of 14.308 M km2 to 14.606 M km2 for this week.  So, we are still in the ice growth season but there is not a whole lot of growth. The negative sea ice anomaly this week was less pronounced than the anomaly of -0.423 M km2 on 02/08/2024 to a smaller negative anomaly of -0.297 M km2 on 02/15/2024, and so less anomalously negative for this time of year.

Arctic Sea Ice Extent Archive

Arctic Sea Ice Extent: February 8, 2024

February 8, 2024:  The sea ice has increased (slightly) this week, and at a rate of 0.60% (from last week’s decrease rate of -0.36%), from the level on 02/01/2024 of 14.222 M km2 to 14.308 M km2 for this week.  So, we are in what looks like a transition area between growth and decrease. It is still a tad bit early for the start of sea ice retreat season and it will be interesting to see what happens in the coming weeks. The sea ice anomaly this week was more negative than the anomaly of -0.308 M km2 on 02/01/2024 to a greater negative anomaly of -0.423 M km2 on 02/08/2024.

Arctic Sea Ice Extent: February 1, 2024

February 1, 2024:  The  sea ice has actually decreased this week, and at a rate of 0.36% (from last week’s growth rate of 0.81%), from the level on 01/25/2024 of 14.274 M km2 to 14.222 M km2 for this week.  A tad bit early for the start of sea ice retreat season, and so not sure if this is just a minor anomaly, or if there is something more significant going on, but it should be interesting to watch in the coming weeks. The negative sea ice anomaly this week was greater than the anomaly of -0.038 M km2 on 01/25/2024 to a more negative anomaly of -0.308 M km2 on 02/01/2024, and so more anomalously negative for this time of year.

Arctic Sea Ice Extent: January 25, 2024

January 25, 2024:  The sea ice has continued to increase, and at a greater rate of 1.68% (from last week’s growth rate of 0.81%), from the level on 01/18/2024 of 14.034 M km2 to 14.274 M km2 for this week. The negative sea ice anomaly this week was less than the anomaly of -0.046 M km2 on 01/18/2024 to a smaller negative anomaly of -0.038 M km2 on 01/25/2024, and so less anomalously negative for this time of year. 

Arctic Sea Ice Extent: January 18, 2024

January 18, 2024:  The sea ice has continued to increase, but at a much lesser rate of 0.81% (from last week’s growth rate of 3.38%), from the level on 01/11/2024 of 13.920 M km2 to 14.034 M km2 for this week. The negative sea ice anomaly this week was less than the anomaly of -0.096 M km2 on 01/04/2024 to a smaller negative anomaly of -0.046 M km2 on 01/18/2024, and so less anomalously negative for this time of year.

Arctic Sea Ice Extent: January 11, 2024

January 11, 2024:  The sea ice has continued to increase, but at a lesser rate of 3.38% (from last week’s growth rate of 3.93%), from the level on 01/04/2024 of 13.449 M km2 to 13.920 M km2 for this week. It is still a bit hard to see the new 2024 line, but it is there and will become more easily read in the next couple of weeks. The negative sea ice anomaly this week was greater than the anomaly of -0.075 M km2 on 01/04/2024 to a greater negative anomaly of -0.096 M km2 on 01/11/2024, and so more anomalously negative for this time of year.

Arctic Sea Ice Extent: January 4, 2024

January 4, 2024:  The sea ice has continued to increase, but at a greater rate of 3.93% (from last week’s growth rate of 2.44%), from the level on 12/28/2023 of 12.921 M km2 to 13.449 M km2 for this week. It is a bit hard to see the new 2024 line, but it is there and will become more easily read in the next couple of weeks. The negative sea ice anomaly this week was lower than the anomaly of -0.244 M km2 on 12/28/2023 to a lesser negative anomaly of -0.075 M km2 on 01/04/2024, and so less anomalously negative for this time of year.