Forecast models indicate that the Polar Vortex will strengthen in late December 2025 after a split and disrupted phase earlier in the season. The recovery is expected to influence North American and European weather in January 2026, potentially sending colder air southward while reorganizing jet stream flow.
Forecast data indicate an early weakening and displacement of the stratospheric polar vortex over the Arctic in October 2025, as a developing high-pressure anomaly over Greenland interacts with the circulation earlier than usual, increasing the chances of colder air movement toward the mid-latitudes of North America and Europe.
A sudden stratospheric warming event is unfolding over Antarctica in early September 2025, rapidly weakening the southern polar vortex. Forecast models indicate potential downstream effects on the Northern Hemisphere jet stream, with implications for winter 2025/26 in the USA and Canada.
The cooling trend observed in the late 20th century at the transition between the troposphere and stratosphere at an altitude of about 15 kilometers is usually believed to be caused by human influences. Now, climate scientists from Kiel And Bergen (Norway) have…
At the start of 2013, temperature change occurred high in the atmosphere over the Arctic Circle, which caused an arctic outbreak in North America during the middle of January. In some places the air just north of the Great Lakes was colder than that over the North
NASA has issued an update on the condition of the decaying UARS satellite: “As of 1:30 p.m. EDT Sept. 21, 2011, the orbit of UARS was 120 mi by 130 mi (190 km by 205 km). Re-entry is expected sometime during the afternoon of Sept. 23, Eastern Daylight Time. The
There are reports from Chile that Puyehue-Cordón Caulle has erupted and produced a large plume. ‘Just after 14:40,′ reports soychile.cl, ‘a huge plume began to be visible from the district of Entre Lagos, which corresponds to the beginning…
In a study to be published in the April 21st issue of Science magazine, researchers at Columbia University’s School of Engineering and Applied Science report their findings that the ozone hole, which is located over the South Pole, has affected the entire circulation
The ozone hole over Antarctica has been rearranging rainfall patterns throughout the Southern Hemisphere for decades, a new modeling analysis shows. The idea that losing ozone in the cold stratosphere over the South Pole could affect weather in the lower atmosphere…
