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Feb 13 โ€ข 4 tweets โ€ข 4 min read
#Climatechange, combined with continued development and urbanization in some areas, has increased the risk of ๐Ÿ๐ฅ๐ฎ๐ฏ๐ข๐š๐ฅ ๐Ÿ๐ฅ๐จ๐จ๐๐ข๐ง๐  in much of #Europe; and, despite extensive efforts to reduce the #risk, #flood impacts have increased in recent decades. Image
The climate crisis makes it increasingly urgent and necessary to put #adaptation strategies, as well as #mitigation, at the center of policies.
So what type of adaptation? How can we, in the face of different risks, identify the most effective #strategies?
A new study in @NatureClimate, co-authored by our Francesco Dottori and Lorenzo Alfieri, focuses on river flooding: simulating different types of interventions, they present a cost-benefit analysis to identify the best strategies for limiting land vulnerability to #flood #risk. Image
Find out more on our website! ๐Ÿ’ป cimafoundation.org/en/news/river-โ€ฆ

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More from @CIMAFoundation

Feb 16
Itโ€™s mid-Feb and two more weeks have passed in the 2023 Italian #snow-season marathon. Mixed weather, with cold air but overall dry conditions โ€“ especially in the Alps.
So, how is the Italian deficit in snow-water resources doing at the moment?

A thread ๐Ÿ‘‡๐Ÿงต Image
We havenโ€™t seen much new snow since late-January snowfalls, and thus estimate half of snow water resources at national scale compared to 2011-21 (deficit: -45%). At national scale, conditions remain similar to 2022, which was already a significant #drought year. ๐Ÿ‘‡ Image
A recap about this plot ๐Ÿ‘†
X axis is time, from autumn to summer.
Y axis is Snow Water Equivalent, i.e., how much water we have in snow (the higher, the better).
Black line: median for 2011-2021; red line: 2023; dashed line: 2022.
Read 12 tweets
Feb 16
Siamo a metร  febbraio e sono passate altre due settimane di maratona per la stagione 2023 della #neve in Italia. โ„๏ธ
Aria fredda ma condizioni complessivamente asciutte, soprattutto sulle Alpi... Come sta andando il #deficit italiano di risorse idriche nivali?
Leggi il thread๐Ÿ‘‡๐Ÿงต Image
Non abbiamo visto molte nuove nevicate dopo la fine di gen. Al momento, quindi, stimiamo che le risorse idriche nivali su scala nazionale siano la metร  rispetto al 2011-21 (deficit -45%).
A livello nazionale, le condizioni rimangono simili al 2022, un anno di #siccitร  rilevante๐Ÿ‘‡ Image
Un riepilogo su questo grafico ๐Ÿ‘†
L'asse X รจ il tempo, dall'autunno all'estate.
L'asse Y รจ lo Snow Water Equivalent, cioรจ quanta acqua abbiamo nella neve (piรน รจ alta, meglio รจ).
Linea nera: mediana per il periodo 2011-2021.
Linea rossa: 2023.
Linea tratteggiata: 2022.
Read 12 tweets
Jan 31
Tre settimane fa abbiamo pubblicato la nostra prima valutazione delle risorse idriche nivali italiane del 2023 e abbiamo parlato di un forte deficit. Come vanno le cose ad oggi, dopo quale giorno freddo e nevoso?

Leggi il thread!๐Ÿงต๐Ÿ‘‡
Vedrete molti grafici come questo๐Ÿ‘‡
L'asse X รจ il tempo, dall'autunno all'estate.
L'asse Y รจ lo Snow Water Equivalent, una misura di quanta acqua abbiamo nella neve (qui in tutta Italia).
La linea nera รจ una media per 2011-2021, la rossa รจ il 2023, quella tratteggiata il 2022.
I dati provengono da S3M Italia, strumento operativo in tempo reale sviluppato da noi per @DPCGov per quantificare le risorse idriche nivali con modelli fisici, dati satellitari e misure al suolo. Le abbiamo simulate dal 2010 e i dati sono disponibili qui: bit.ly/3GZRVWD
Read 13 tweets
Jan 31
Quite cold & snowy days over Italy! Three weeks ago we published our first assessment of 2023 Italian #snow water resources and we reported a significant deficit. How are things going after recent snowfalls?

A thread! ๐Ÿงต๐Ÿ‘‡
๐Ÿ”‘ Youโ€™ll see many plots like this one๐Ÿ‘‡
X axis is time, from autumn to summer.
Y axis is Snow Water Equivalent, i.e., how much water we have in snow (across all Italy in this case).
The black line is a median for 2011-2021, the red line is 2023, the dashed line is 2022.
These data come from S3M Italy, a real-time operational tool we developed for the Italian @DPCgov to estimate snow water resources using models, satellite data and ground measurements. We simulated since 2010 & data are freely available here: bit.ly/3GZRVWD
Read 13 tweets
Jan 9
Italy is facing another severe deficit in #snow water resources in 2023. We all see landscapes with scarce snow, but we also know that snow accumulation can change significantly from one year to the others. So, how serious is the situation at the moment?

Thread below! ๐Ÿงต๐Ÿ‘‡
There are two variables we should keep in mind when thinking about snow: snow extent (where?) and snow depth (how much?). By feeding physical models with satellite images, IT-SNOW provides both information in real time. Thus, how much water in snow are we missing at the moment?
According to our estimates, we are currently missing about 69% of water from snow at national scale. In other words: we are experiencing a larger deficit than last year, which was already an historical drought year.
Read 7 tweets
Jan 9
L'Italia sta affrontando un altro grave deficit di risorse idriche da #neve nel 2023. Vediamo paesaggi con poca neve, ma sappiamo anche che l'accumulo di neve puรฒ cambiare significativamente da un anno all'altro. Quindi quanto รจ grave la situazione al momento?
Segui il thread๐Ÿ‘‡๐Ÿงต
Ci sono due variabili da tenere presenti quando si parla di neve e risorse idriche: l'estensione (dove) e la profonditร  della neve (quanta). Alimentando i nostri modelli fisici con le immagini satellitari, IT-SNOW fornisce entrambe le informazioni in tempo reale.
Ma quindi, quanta neve ci manca al momento? Secondo le nostre stime, attualmente ci manca circa il 69% dell'acqua accumulata nella neve a scala nazionale. In altre parole, stiamo registrando un deficit maggiore rispetto all'anno scorso, che รจ giร  stato un anno storico di #siccitร 
Read 7 tweets

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