The next cold winter? Strong La nina in Winter 2021/2022 forecasted!




Although temperature anomalies during relatively cold La nina winters are not everywhere in Northern Hemisphere negative, La nina is giving big hopes for strong Arctic and Siberian outbreaks across all Northern Hemisphere in Winter 2021/2022, similarly, such as during the the last, Winter 2020/2021.

La nina means mainly much colder Earth than usually /https://mkweather.com/global-temperatures-dramatically-went-down-the-sharpest-jump-since-1990s-la-nina//, with regional anomalously cold conditions /https://mkweather.com/a-big-european-circulation-anomaly-in-2021-totally-oppositely-such-as-in-the-world-and-showing-what-climate-change-should-bring-until-2100// across Northern Hemisphere.

As we have showed in the last Mkweather article, La nina is relatively strongly associated with weak solar activity /https://mkweather.com/solar-cycle-behind-nao-coldwaves-in-europe-and-la-nina-coldwaves-around-the-world-2021//. Minimum of solar cycle is simultaneously associated with stronger NAO- and AO- phases, although, stronger correlation ranks between La nina and NAO- / AO- haven´t been confirmed.

La nina should mean not only good conditions for North American, European, Asian and north African coldwaves during the winter, but too cold and stormy Australia /https://mkweather.com/la-nina-in-australia-the-coldest-summer-in-9-and-the-wettest-in-4-years// or stronger Asian monsoon /https://mkweather.com/summer-forecast-for-asia-hot-but-strong-indian-monsoon//. Stronger coldwaves and cyclone season in South Africa, colder conditions in South America and Antarctica are during La nina observed, too /https://mkweather.com/base-esperanza-antarctica-10c-while-vostok-before-a-week-80c//.

In developing countries, La nina is associated mostly with periods of rains, what has better effect on agriculture such as hot El nino with drought or wildfires.

However, in Summer 2021 we will be relatively close to neutral ENSO phase, what should be associated with an overall warmer conditions around the Earth.

Many regions in Northern Hemisphere haven´t experienced with colder summer such as long-term average a few decades and hot Northern Hemisphere therefore should affect into warming of tropical regions in Pacific, temporarily (during summer months).

Autumn is bringing in last years cooling trends of temperature across key mid-latitudes, thanks to response to the Arctic-related circulation mechanisms and colder conditions in mid-latitudes, with often NAO- October phases, should mean the next effects to southern climate zones, reciprocally, with result of return into stronger La nina conditions.

Expected stronger Hurricane season 2021 will contribute into autumn return of La nina, too, because hurricanes and tropical storms will cooling North American and Euro-Atlantic sector, with some contribution into global climate system, too.

Until winter months 2021/2022 therefore we should fall into the next relatively strong La nina pattern again, still with relatively weak solar activity and numerous strong volcanic eruptions VEI4 - VEI5 in previous period.

Around 70% of La nina years are bringing powerful Major SSWs (Major Sudden Stratospheric Warming), therefore if we will have a luck in the middle of winter again, extreme, in continental Europe 30-degree, in the USA 40-degree and in Siberia 60-degree frosts should hit after a one-year break, after relatively cold Winter 2020/2021, cold Spring 2021, hot Summer 2021 and cooling in Autumn 2021.

Source: May 2021 ENSO update: bye for now, La Niña! | NOAA Climate.gov
Source: May 2021 ENSO update: bye for now, La Niña! | NOAA Climate.gov
Source: PowerPoint Presentation (noaa.gov)
Source: PowerPoint Presentation (noaa.gov)
Source: PowerPoint Presentation (noaa.gov)
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