Mika Rantanenさんのイラストまとめ

Exactly year ago we were hitting the final nails in the coffin of the truly unprecedented winter 2019/2020.

This year the picture is slightly different, especially in NW-Russia.

@jkaljundi Sorry for not responding your earlier tweet... But here's the same change in temperatures as a map.

You can see that essentially the further north you go, the more warming you get = a phenomenon called Arctic amplification.

So I believe Arctic amplification is a key word here.

High-latitude blocking in the Arctic Canada has been near the record-levels for the month of February, according to the sounding climatology from Eureka, Nunavut.

The surface pattern features a ring of low pressure areas encircling the high-latitude blocking, where the sea level pressure can rise close to 1070 hPa.

https://t.co/QhBdiUWqvx

The circulation patterns in the Northern Hemisphere last February and this February.

Like mirror images!

@VaerTorsten Southern/Central Norway and Sweden are indeed the coldest regions in terms of temperature anomalies for the next days.

How it started: How it ended:

Helsingissä on talven kylmin yö käsillä, mutta #ilmastonmuutos etenee.

Juuri ilmestyneen @WMO raportin mukaan vuosi 2020 oli globaalisti joko 1., 2., tai 3. lämpimin vuosi, riippuen käytetystä aineistosta.

➡️https://t.co/r7mrZHDh0J

Verification. ECMWF was closer to reality but not perfect either. https://t.co/yZ3FHtkQPf

@SimonLeeWx I noticed the same. Some models had ensemble mean SSW while some didn't.

For instance, Met Office and Meteo-France didn't. 1/2