Discover and read the best of Twitter Threads about #ENSO

Most recents (3)

🚨New Paper Alert🚨
Heureux de vous annoncer la publication d'une étude conduite avec des collègues du #CNRM (@meteofrance /@INSU_CNRS) revenant sur l'exceptionnel été #2022 pour les #SST sur les façades maritimes françaises.
Un 🧵 pour parler 🛰️et 🌊:
tinyurl.com/yc7dk2za
Vous vous souvenez de mon fil de l'an dernier?
Le but ici est de quantifier la réponse des #SST et d'attribuer ces extrêmes aux conditions atmosphériques en évaluant les contributions des variables atmosphériques.
Le contexte:
L'été #2022 est le 2ème été le + chaud en France depuis 1900 avec une moyenne saisonnière pour la T2m de 22.7°C.
En particulier, la France a subit 3 vagues de chaleur exceptionnelles Image
Read 21 tweets
#LaNina #ENSO & drought expectations in Africa - a deep dive into latest satellite imagery and model atmospheric precipitable water data.

Thread...

[image: There is remarkably complex water transport activiy underway over North Africa and the Middle East.]
First some background. ENSO, La Nina and El Nino is an oscillation related to sea surface temperatures in the Eastern Pacific. It is an important indicator of drought activity, especially in the US, but also as far away as Africa and NZ. La Nina typically mean less rain.
The image above shows equatorial tropical atmospheric water flows, and helps with understanding of why the Eastern Pacific sea surface temperature is important. Less convective storms in the Eastern Pacific leads to less atmospheric water everywhere.
Read 27 tweets
New paper from myself, Steve Woolnough, @CharltonPerez and Frederic Vitart published online today in #AGUpubs Geophysical Research Letters.
@AtmosScience @UniRdg_Met @ECMWF
#VotePlanet #MJO #ENSO #teleconnections #NAO
doi.org/10.1029/2019GL…
Summary:
Using a reanalysis to incorporate observations from the past 39 winters, we find a robust dependence of teleconnections from the Madden-Julian Oscillation (MJO) to the North Atlantic/European region weather regimes on the state of the El Niño–Southern Oscillation (ENSO)
More details:
Our study provides the first evidence to support this: in the form of contingency tables, using the method and format from @cassouman40, Nature (2008); geopotential height composites, to show the flow pattern; and analysis of the physical mechanisms
Read 15 tweets

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