La Niña, which affects the climate of part of the world, will affect the snow cover this winter

By influencing the position JetThe continuation of La Niña will have consequences for temperatures and snow cover this winter, particularly in North America. In Europe, the impact of La Niña is not known, but the forecasts for this winter all depict the same alarming scenario.

La Niña appears in phases of one to two years, alternating with its warm counterpart, El Niño. These two phenomena are distinguished abnormalityabnormality Temperature over part of the Pacific Ocean: Colder than average for water over this specific region no ninano nina, while warm water is associated with the El Niño phenomenon. La Niña has experienced several decreases in intensity since September 2020, before rising again last spring and continuing until September 2022. NOAA . Climate Outlook It indicates that the phenomenon will intensify during the coming winter For the third year in a rowA rare event, but not unprecedented. Like El Niño, La Niña strongly influences weather reportweather report from a part of the world.

Heavy snow forecast for northern US and Canada

La Niña usually causes an anticyclone to shut down in the North Pacific Ocean, bringing more pressure Jet To the North: This winter is very cold in Canada and very wet in the Northwest United States (Washington, Montana, Wyoming), the Northeast (New York, Massachusetts, Maine…) as well as the Great Lakes region, and much warmer and drier than average on the half The entire South, that’s what happened in 2020 and 2021. Location severe weather europe He conducted a study of various long-term weather forecasting models (ECMWF and UKMO): While the ECMWF predicts significant snowfall in Canada and a deficit in the western United States, the UKMO model reveals more classic La Niña forecasts: Very snowy winters begin in December, and even more In January, over the northwestern United States (including the Rocky Mountains), the Great Lakes region, the northeast and all of Canada. Predictions quite similar to what these regions have experienced over the past two years: Snow cover has been very beneficial for the western United States in particular, while the southern United States has seen Historically warm and dry winter 2021-2022.

Towards a dry and mild winter in Europe?

The effect of La Niña on the European climate is unknown: it may be nonexistent, or just unknown from the current scientific state. Over the next three months (November, December, January), snow cover is seen as largely missing across Europe by the ECMWF and UKMO models, particularly December which promises to be very dry at the moment. Some snowfall is expected during November, but what follows does not look cold enough to allow snow to arrive, outside of higher elevation areas. I remember that long term forecast These are experimental samples taken with tweezers. But if these forecasts are confirmed for the winter, the deficit the snow over a large part of Europe would be very bad news for BiodiversityBiodiversityWater resources and the mountain recreation economy.