The La Niña phenomenon, which affects the weather in one part of the world, will affect the snowfall this winter

The La Niña phenomenon, which affects the weather in one part of the world, will affect the snowfall this winter

By influencing the position of The jet stream, the persistence of the La Niña phenomenon will have consequences for temperatures and snow cover this winter, particularly in North America. In Europe, the impact of La Niña is unknown, but forecasts for this winter all envision the same worrying scenario.

La Nina, along with its warmer counterpart El Niño, appears in phases of up to one or two years. Both these phenomena are characteristic AnomaliesAnomalies Temperatures in a part of the Pacific Ocean: Colder than average waters are associated with this particular region the girlthe girl, warm water associated with El Niño. La Niña has had several dips in intensity since September 2020, peaking again last spring and continuing through September 2022. NOAA Weather Forecasts This phenomenon is indicated to intensify in the coming winter Third year in a row, a rare but unprecedented event. Like El Nino, La Nina also has a strong influence Weather descriptionWeather description From one part of the world.

Heavy snow is forecast for the northern US and Canada

La Niña usually causes an anticyclone to lock in the North Pacific Ocean, which intensifies. The jet stream North: It produces very cold winters in Canada and very wet winters in the United States’ Northwest (Washington, Montana, Wyoming), Northeast (New York, Massachusetts, Maine…) as well as the Great Lakes region. , and warmer and drier than average across the southern half, which is what happened in 2020 and 2021. site Harsh weather in Europe A study of various long-term climate forecast models (ECMWF, UKMO) was conducted: while the ECMWF model predicts significant snowfall in Canada and a deficit in the western United States, the UKMO model reveals more classic predictions for La Niña: A very snowy winter beginning in December, and in January, the northwestern United States (Rockies including), the Great Lakes region, the northeast of the country, and Canada. Forecasts are similar to what these regions have experienced over the past two years: the western United States will benefit from snow cover in particular, while the southern United States will experience A historically warm and dry winter 2021-2022.

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Towards a dry and mild winter in Europe?

The impact of La Niña on the European climate is unknown: it may be non-existent or unknown at the current state of science. Both ECMWF and UKMO models do not see much snow across Europe for the next three months (November, December and January), with December in particular promising to be very dry at the moment. Some snow is expected in November, but the following are not cold enough to allow snow outside of the higher elevations. Remember that Long term forecast Test specimens are to be taken with tweezers. But if these predictions for winter are confirmed, the deficit the snow That would be very bad news for much of Europe BiodiversityBiodiversityWater resources and the economics of mountain recreation.

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