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News and highlights

NEWS

CHANGE OF GOVERNANCE

Life of the project – We are happy to announce that Dim COUMOU is now the Scientific Coordinator of the XAIDA Project, unanimously approved by the Consortium. Read more to know the context and the other changes in the XAIDA governance.

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EVENTS

XAIDA Webinar #8

The 8th session of our webinar will occur on July 3rd at 2 PM CET. Lucas Fery (LSCE-IPSL, CEA Saclay) will do a presentation on the detection and attribution of derechos in France.
Check out the details to attend, discuss and follow the discussion!

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XAIDA Webinar #7

The 7th session of our webinar will occur on June 13th at 2 PM CET. Christian Reimers (Max Planck Institute, Germany) will do a presentation on impact modeling for phenology.
Check out the details to attend, discuss and follow the discussion!

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XAIDA Webinar #6

The 6th session of our webinar will occur on May 21th at 2 PM CET. Emmanuel Rouges (University of Reading, UK) will explain the link bertween weather regimes and energy shortfall events in Europe.
Check out the details to attend, discuss and follow the discussion!

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XAIDA Webinar #5

The 5th session of our webinar will occur on April 30th at 2 PM CET. Jitendra Singh (Institute for Atmospheric and Climate Science, ETH Zurich) will explain how circulation dampened heat extremes intensification over the Midwest USA and amplified over Western Europe.
Check out the details to attend, discuss and follow the discussion!

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XAIDA Webinar #4

The 4th session of our webinar will occur on April 9th at 2 PM CET. Miguel Ángel Fernández Torres (IPL, Universitat de València) will present the AIDE Toolbox: Artificial Intelligence for Disentangling Extreme Events.
Check out the details to attend, discuss and follow the discussion!

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XAIDA Webinar #3

The 3rd session of our webinar will occur on March 19th at 2 PM CET. José M. Tárraga will speak about Exploring interactions between socioeconomic context and natural hazards on human population displacement.
Check out the details to attend, discuss and follow the discussion!

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SUMMER TRAINING SCHOOL: I2C

CALL FOR APPLICATIONS: The next XAIDA training school entitled ‘Attributing Impacts of Climate Change (I2C): Challenges, Methods and Perspectives’ will take place on May 26-31, 2024 in the Les Plantiers village, in France.
Check out the lectures, details and how to apply.

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XAIDA Webinar #2

The 2nd session of our webinar will occur on Feburary 28th at 2 PM CET. Raed Hamed (VU) will speak about Climate storylines for assessing compound events and extreme crop impacts.
Check out the details to attend, discuss and follow the discussion!

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XAIDA Webinar #1

The 1st session of our webinar will occur on January 24th at 10:30 AM CET. Davide FARANDA (CNRS) will speak about A framework for attributing extreme events to climate change and evaluating adaptation strategies: the example of Venice Acqua Alta events.
Check out the details to attend, discuss and follow the discussion!

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PRESS: MANY DEVASTATING EXTREMES IN 2023 WERE AMPLIFIED BY GLOBAL WARMING

In 2023, the world reached new record temperatures, with an unprecedented global mean temperature of 1.48°C above pre-industrial levels. These record temperatures strongly increased the intensity of heatwaves, droughts and extreme rainfall associated with storms like Otis and Daniel.
The XAIDA team hosted a Press Conference on January 9th 2024 at 2pm CET to explain these results and methods. Find the Press Release and the video record of the Press Conference here.

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BRIEFS

How can we attribute weather extremes to climate change?

With climate change we see an increase in extreme weather events around the globe; occurrences of floods, heatwaves, and droughts. Within XAIDA, we aim to determine to what extent human induced climate change has altered the probability of occurrence and/or intensity of an extreme weather event, also known as attribution science. Several institutions work on attribution science, using different but complementary methodological frameworks. In this brief we explain the three main approaches used within XAIDA: unconditional probabilistic analysis, circulation analogues, and the storyline approach.

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©EUMETSAT2019

DESPITE GLOBAL WARMING, COLD SPELLS SUCH AS WITNESSED IN THE 1980’s IN WESTERN EUROPE ARE STILL POSSIBLE

Extreme cold spells are still possible today in Western Europe, even with current warming trends.
The atmospheric circulation patterns that drive extreme low temperatures, e.g. as in January 1985, remain possible in current winters.
Under such conditions we anticipate that with current regional warming trends, temperatures would only be about 1.4°C warmer than in 1985, with potential impacts on the electricity grid, and health.
As an example, a circulation-induced 1985-like cold spell in today’s climate would likely stand at around -9°C over France for minimum temperatures, which would still be amongst the 5-10 coldest cold spells observed in the past five decades.

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The “Medicanes” (Mediterranean Hurricanes) and climate change

Medicanes are Mediterranean cyclones whose characteristics resemble those of tropical cyclones. They are often associated with hurricane-force winds and heavy precipitation. With a frequency of 1-2 per year, it is a challenge to determine whether their frequency should increase or decrease in a warmer world. Their intensity is however projected to increase due to the warming projections for the Mediterranean sea, the main source of energy for medicanes.

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EARLY 2022 HEAT WAVES IN EUROPE AND CLIMATE CHANGE

The summer of 2022 was pounded by a series of heat waves in Europe. The first, an outstanding early heat wave, took place in mid-June 2022 across Europe, mostly hitting Spain, France, but also other parts of Europe. The early character of the heat, in a crucial season for agriculture and ecosystems, is likely to have induced specific impacts on health and agriculture, which will need to be assessed. During the XAIDA Summer School in Trieste, students have studied the relation of this heatwave to climate change.

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CYCLONES AND CLIMATE CHANGE: WHAT DO WE KNOW? THE CASE OF CYCLONE BATSIRAI

Tropical Cyclone Batsirai has left Madagascar after killing dozens, displacing tens of thousands and devastating the island’s agriculture, already suffering from drought hard hitting a vulnerable population, Unicef said, adding that many of the victims are probably children, who make up more than 50% of Madagascar’s population. Batsirai hit eastern Madagascar with a Category 3 strength on the evening of Saturday 5 february 2022, bringing heavy rains and winds of 165 km/h. The city of Mananjary in the east of the country “has been completely destroyed”, one of its residents said.

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TORNADOES AND CLIMATE CHANGE: WHAT WE KNOW

Devastating tornadoes in central U.S.A. took place on 10 and 11 December 2021, with widespread destruction of homes, infrastructures, and large parts of some midwest cities. Over a hundred people lost their lives and many more were injured. Given that we already live in a world of 1.2°C global warming, such extreme events immediately raise the question whether and to what extent climate change altered the likelihood and intensity of these devastating storms. Here we briefly summarize the current scientific knowledge on such links.

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