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 km2 on 05/08/2025, and so more anomalously negative for this time of year. 

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 than the anomaly of -0.1564 M km2 on 04/23/2025 to a greater negative anomaly of -0.2665 M km2 on 05/01/2025, and so more anomalously negative for this time of year. 

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, and so less anomalously negative for this time of year.

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 km2 on 04/17/2025, and so less anomalously negative for this time of year.

April 10, 2025: The Arctic sea ice has experienced a decrease for this week at a pretty small rate of 0.14% (last week’s decrease rate was 0.35%), from the level on 04/03/2025 of 13.979 M km2 to 13.959 M km2 for this week.  The negative sea ice anomaly this week was lower than the anomaly of -0.7676 M km2 on 04/03/2025 to a lesser negative anomaly of -0.5932 M km2 on 04/10/2025, and so less anomalously negative for this time of year.

April 3, 2025: The Arctic sea ice has experienced a decrease for this week at a pretty small rate of 0.35% (as opposed to last week’s decrease rate of 2.13%), from the level on 03/27/2025 of 14.028 M km2 to 13.979 M km2 for this week.  The sea ice extent right now continues to be at the lowest on record for this time of year; and despite the relatively low decrease in sea ice this past week, we are moving further into the sea ice melt season. The negative sea ice anomaly this week was lower than the anomaly of -0.8692 M km2 on 03/27/2025 to a lesser negative anomaly of -0.7676 M km2 on 04/03/2025, and so less anomalously negative for this time of year.