An Arctic Blue Ocean event could occur in Sep 2026. Could an Antarctic Blue Ocean Event also occur, in early 2027? The image shows a NOAA forecast issued Apr 21, 2026, for the Niño3.4 region up to Jan 2027 that goes off the scale for some forecast members. arctic-news.blogspot.com/2026/04/doub...

End April 2025, an Arctic sea ice maximum volume was reached of about 19,000 km³. The 2026 maximum may turn out to be even lower, about 18,000 km³. In years when Arctic sea ice melting between April and Sept is strong, some 18,000 km³ of sea ice disappears. arctic-news.blogspot.com/2026/04/doub...

Arctic sea ice volume was at a record low for the time of year on April 20, 2026. arctic-news.blogspot.com/2026/04/doub...

The world (60°S–60°N, 0–360°E) sea surface temperature (SST) was at a record high for the time of year on April 19, 2026. arctic-news.blogspot.com/2026/04/doub...

In the Southern Hemisphere, the surface air temperature remains at a record high for the time of year. The image shows SH temperatures through April 14, 2026. arctic-news.blogspot.com/2026/04/doub...

This combination image illustrates the rise of sea surface temperature anomalies in the Niño 1+2 region of more than 3°C (from less than -1.5°C to more than 1.5°C) over the past four months. arctic-news.blogspot.com/2026/04/a-hu...

Arctic sea ice volume was at a record low for the time of year on April 18, 2026. arctic-news.blogspot.com/2026/04/doub...

End April 2025, the Arctic sea ice maximum volume was about 19,000 km³. The 2026 maximum may only be about 18,000 km³. Strong melting may cause virtually all Arctic sea ice to disappear later in 2026 and also cause an Antarctic Blue Ocean event early 2027. arctic-news.blogspot.com/2026/04/doub...

Arctic sea ice volume through Apr 18, 2026. Melting strength Apr (maximum, blue) to Sep (minimum, red) is indicated by magenta (strong melting, 18,000 km³) and green (little melting, 15,000 km³) bars. Strong melting could cause a Blue Ocean Event in Sep 2026.
arctic-news.blogspot.com/2026/04/doub...

Image adapted from a NASA image with a trend showing change from 1954 to 2025. arctic-news.blogspot.com/2026/04/a-hu...

Arctic sea ice volume was at a record low for the time of year on April 17, 2026. arctic-news.blogspot.com/2026/04/a-hu...

On April 16, 2026, Arctic sea ice area was 11.87 million km², a record low for the time of year and 1.16 million km² lower than it was on April 16, 2012. A Blue Ocean Event could occur in September 2026. arctic-news.blogspot.com/2026/04/a-hu...

The world (60°S–60°N, 0–360°E) sea surface temperature (SST) was 21.16°C on April 16, 2026, 0.81°C higher than 1982-2010 and a record high for the time of year, just short of the record high 21.17°C SST reached in 2024. SST was 0.47°C higher than Jan 1, 2026. arctic-news.blogspot.com/2026/04/a-hu...

Arctic sea ice volume was at a record low for the time of year on April 16, 2026. arctic-news.blogspot.com/2026/04/a-hu...

On April 15, 2026, Arctic sea ice area was 11.91 million km², a record low for the time of year and 1.1 million km² lower than it was on April 15, 2012. A Blue Ocean Event could occur in September 2026. arctic-news.blogspot.com/2026/04/a-hu...

Arctic sea ice volume was at a record low for the time of year on April 15, 2026. arctic-news.blogspot.com/2026/04/a-hu...

The temperature anomaly versus 1951-1980 for the United States in March 2026 was 4.1°C. arctic-news.blogspot.com/2026/04/a-hu...

Over the years, temperature anomalies have been highest in the Arctic. arctic-news.blogspot.com/2026/04/a-hu...

The surface air temperature in the Southern Hemisphere was at a record high for the time of year on April 9, 2026. arctic-news.blogspot.com/2026/04/a-hu...

Arctic sea ice volume was at a record low for the time of year on April 14, 2026. arctic-news.blogspot.com/2026/04/a-hu...

On April 13, 2026, Arctic sea ice area was 12.01 million km², a record low for the time of year and about 1 million km² lower than it was on April 13, 2012. A Blue Ocean Event could occur in September 2026. arctic-news.blogspot.com/2026/04/a-hu...

The daily average for the de-seasonalized global average CO₂ trend was at a record high of 427.59 ppm on April 13, 2026. Concentrations of CO₂ haven't been this high for millions of years and they are still increasing rapidly. arctic-news.blogspot.com/2026/04/a-hu...

Arctic sea ice area was 0.74 million km² lower than 1981-2010 on April 11, 2026 (in black), the lowest anomaly on record for the time of year and a deviation from 1981-2010 of -2.77σ. Also highlighted are 2025 (in purple), 2016 (light purple) and 2012 (blue). arctic-news.blogspot.com/2026/04/a-hu...

The daily average for the de-seasonalized global average CO₂ trend was at a record high of 427.58 ppm on April 11, 2026. Concentrations of CO₂ haven't been this high for millions of years and they are still increasing rapidly. arctic-news.blogspot.com/2026/04/a-hu...

Arctic sea ice volume was at a record low for the time of year on April 12, 2026. arctic-news.blogspot.com/2026/04/a-hu...

Arctic sea ice area was 0.71 million km² lower than 1981-2010 on April 10, 2026 (black), the lowest daily anomaly on record and a deviation from 1981-2010 of -2.74σ. arctic-news.blogspot.com/2026/04/a-hu...

The daily average for the de-seasonalized global average CO₂ trend was at a record high of 427.58 ppm on April 10, 2026. Concentrations of CO₂ haven't been this high for millions of years and they are still increasing rapidly. arctic-news.blogspot.com/2026/04/a-hu...

Arctic sea ice volume was at a record low for the time of year on April 11, 2026. arctic-news.blogspot.com/2026/04/a-hu...

A huge amount of heat has accumulated in oceans. Much of this heat is on track to move from ocean to atmosphere over the next few months, and much ocean heat will also move along the path of ocean currents to the Arctic Ocean, resulting in sea ice decline. arctic-news.blogspot.com/2026/04/a-hu...

The bars on the first image indicate the likely strength of the upcoming El Niño. arctic-news.blogspot.com/2026/04/a-hu...