Alaska Climate Research Center

The Alaska State Climate Center
The Alaska State Climate Center
The Alaska State Climate Center

Arctic Sea Ice

Arctic Sea Ice Extent: June 19, 2025

June 19, 2025: The  Arctic sea ice has experienced a greater decrease for this week of 5.64% (last week’s decrease rate was 4.75%), from the level on 06/12/2025 of 10.829 M km2 to 10.218 M km2 for this week. The sea ice extent is currently at record low levels for this time of year, beating the previous negative record of 10.301 M km2 on 6/19/2016. The negative […]

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Arctic Sea Ice Extent: June 12, 2025

June 12, 2025: The Arctic sea ice has experienced a greater decrease for this week of 4.75% (last week’s decrease rate was 3.76%), from the level on 06/05/2025 of 11.369 M km2 to 10.829 M km2 for this week. The negative sea ice anomaly this week was higher than the anomaly of -0.6017 M km2 on 06/05/2025 to a greater negative anomaly of -0.7613 M

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Arctic Sea Ice Extent: June 5, 2025

June 5, 2025: The Arctic sea ice has experienced a slightly greater decrease for this week of 3.76% (last week’s decrease rate was 3.54%), from the level on 05/29/2025 of 11.813 M km2 to 11.369 M km2 for this week.  The negative sea ice anomaly this week was higher than the anomaly of -0.4935 M km2 on 05/29/2025 to a greater negative anomaly of -0.6017

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Arctic Sea Ice Extent: May 29, 2025

May 29, 2025: The Arctic sea ice has experienced a greater decrease for this week of 3.54% (last week’s decrease rate was 2.41%), from the level on 05/22/2025 of 12.246 M km2 to 11.813 M km2 for this week. The negative sea ice anomaly this week was higher than the anomaly of -0.3852 M km2 on 05/22/2025 to a greater negative anomaly of -0.4935 M

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Arctic Sea Ice Extent: May 15, 2025

May 15, 2025: The Arctic sea ice has experienced a larger decrease for this week of 3.76% (last week’s decrease rate was 2.76%), from the level on 05/08/2025 of 13.038 M km2 to 12.548 M km2 for this week.  The negative sea ice anomaly this week was higher than the anomaly of -0.2812 M km2 on 05/08/2025 to a greater negative anomaly of -0.4197 M

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Arctic Sea Ice Extent: May 8, 2025

May 8, 2025: The Arctic sea ice has experienced a smaller decrease for this week of 2.76% (last week’s decrease rate was 3.53%), from the level on 05/01/2025 of 13.409 M km2 to 13.039 M km2 for this week. The negative sea ice anomaly this week was higher than the anomaly of -0.2665 M km2 on 05/01/2025 to a greater negative anomaly of -0.2812 M

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Arctic Sea Ice Extent: May 1, 2025

May 1, 2025: With 8 days worth of data this time we are returning to the usual schedule; the Arctic sea ice has experienced a larger decrease for this week of 3.53% (last week’s decrease rate was 0.39%), from the level on 04/23/2025 of 13.900 M km2 to 13.409 M km2 for this week. The negative sea ice anomaly this week was higher

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Arctic Sea Ice Extent: April 23, 2025

April 23, 2025: The Arctic sea ice has experienced a fairly small decrease for this week 0.39% (last week’s decrease rate was 0.04%), from the level on 04/17/2025 of 13.954 M km2 to 13.900 M km2 for this week. The negative sea ice anomaly this week was lower than the anomaly of -0.3531 M km2 on 04/17/2025 to a lesser negative anomaly of -0.1564 M km2 on 04/23/2025,

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Arctic Sea Ice Extent: April 17, 2025

April 17, 2025: The Arctic sea ice has experienced an extremely small decrease for this week of 0.04% (last week’s decrease rate was 0.14%), from the level on 04/10/2025 of 13.959 M km2 to 13.954 M km2 for this week.  The negative sea ice anomaly this week was lower than the anomaly of -0.5932 M km2 on 04/10/2025 to a lesser negative anomaly of -0.3531 M

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