Published on 12 January 2023
According to the World Meteorological Organization, a high-pressure zone over the Mediterranean region and an Atlantic low-pressure system induced a strong southwest flux that brought warm air from northwest Africa to the middle latitudes. The air was further warmed when passing the North Atlantic owing to higher-than-normal sea surface temperatures.
All this caused record-breaking heat on New Year's Eve and New Year's Day with temperatures above 20°C observed in many European countries. The unexpectedly warm weather comes after excruciatingly hot weather in 2022 which saw the hottest summer on record for Europe, according to the latest Copernicus Climate Change Report published a few days ago.
contains modified Copernicus Sentinel data (2023), processed by ESA, CC BY-SA 3.0 IGO
In the 2023 satellite image, snow is more likely to be found on the peaks above 2000 m, while the ski slopes under this altitude have had to rely on artificial snow this season. Artificial ski slopes can be seen as thin, white strips in the bottom of the 2023 image.
Copernicus Sentinel-2 is a two-satellite mission. Each satellite carries a high-resolution camera that images Earth’s surface in 13 spectral bands. Together they cover all Earth’s land surfaces, large islands, inland and coastal waters every five days at the equator.
European Space Agency [ESA]. (2023, January 12). Snowless ski slopes from space. Observing the Earth. https://www.esa.int/ESA_Multimedia/Images/2023/01/Snowless_ski_slopes_fr...