Discover and read the best of Twitter Threads about #marineheatwave
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Torno sull'eccezionale ondata di calore marino che sta vivendo il Nord Atlantico (NATL), i. p. la regione E a ridosso delle coste europee e quella N. SST nel complesso (0-60N, 0-80W) > 23° C, SSTA > 1° C, std >+3σ! ↙️↘️ #marineHeatwave 🧵 (1/9) @Giulio_Firenze @RobertoIngross2 
Come tutte le forti anomalie, si tratta di una sovrapposizione fra variabilità interna e forzata. Una combinazione insolita delle due, anche perché insolita è la situazione della variabilità interna. Cominciamo con la prima.▶️ tinyurl.com/5x5zztxk (2/9)
C'è una modesta tendenza al rialzo guidata dal cambiamento climatico. In un mondo che si riscalda anche le SST sul NATL ne subiscono l’influenza.▶️ tinyurl.com/4z2zbtrj . Infatti l’indice che definisce la principale variabilità multi-decennale delle SST del NATL…(3/9)
While a severe 2022 #marineheatwave is affecting the #Mediterranean Sea, what are the lessons learnt from past #MHW?
1⃣ Tens of sessile species belonging to diverse groups (corals, sponges, algae...) can be affected by mass mortality events,.... will new ones enlarge the list?
1⃣ Tens of sessile species belonging to diverse groups (corals, sponges, algae...) can be affected by mass mortality events,.... will new ones enlarge the list?
2⃣ Large scale mass mortality events can affect thousands of km of coastline across all Mediterranean ecoregions, probably most of the affected areas have been already impacted by previous events...will new areas will enlarge the list?
3⃣ #Marineheatwave are not only observed in the sea surface, but they propagate down in the water column, correspondingly mass mortality events impacts are visible from surface down to +40m depth...will the events will reach depths never impacted before?
A major heatwave will hit this week to western Europe.
Temperatures over 40°C are expected in France and widely in Spain.
And this all will happen after a record-warm May in France and the 2nd warmest May in Spain.
Some thoughts in a thread 👇
Temperatures over 40°C are expected in France and widely in Spain.
And this all will happen after a record-warm May in France and the 2nd warmest May in Spain.
Some thoughts in a thread 👇
The heatwave forms when an upper-level ridge strengthens in the downstream of the Azorean cut-off low.
The ridge involves hot airmass from Africa, and perhaps more importantly, descending air parcels adiabatically warming when reaching surface.
The ridge involves hot airmass from Africa, and perhaps more importantly, descending air parcels adiabatically warming when reaching surface.
The evolution resembles 2019 western European heatwave, but this time the downstream ridge responsible for the heatwave does not grow as strong in amplitude, and also the wave breaking looks more cyclonic (or less anticyclonic) than in 2019.
