Les changements des situations météorologiques renforcent les impacts des vagues de chaleurs et tempêtes  en France et en Europe Une nouvelle étude réalisée par des chercheurs de l’IPSL et de l’université d’Uppsala publiée dans PNAS révèle que les changements de situations météorologiques en Europe ont un impact majeur sur le climat de surface, exacerbant les effets du changement climatique.

Going Beyond Models: A Statistical Method for Predicting the Madden Julian Oscillation The Madden Julian Oscillation (MJO) is the major source of fluctuation in tropical weather on weekly to monthly timescales [1].

Le changement climatique des vents extrêmes affecte déjà la disponibilité de l'énergie éolienne offshore en Europe par Lia Rapella L'énergie éolienne offshore joue un rôle clé dans la transition vers un système d'énergie renouvelable, et son utilisation devrait augmenter au cours des prochaines décennies.

Le Changement Climatique: cause majeure de la sécheresse 2022 en Europe de l'Ouest Les chercheurs de l’IPSL et de l'Université de Bologne démontrent le lien entre la sécheresse en Europe en 2022 et le changement climatique dû à l'homme.

Acquisition et mise en service d’un Spectromètre de Masse isotopique Isoprime Précision Groupe de dendroisotopie et partenaires (Daux V., Pierre M., Stievenard M.

Soil carbon dynamics is strongly controlled by depth globally, with increasingly slow dynamics found at depth. The mechanistic basis remains however controversial, limiting our ability to predict carbon cycle-climate feedbacks.

Few studies have focused on Arenosols with regard to soil carbon dynamics despite the fact that they represent 7% of the world’s soils and are present in key areas where food security is a major issue (e.g., in Sahelian regions).

Crédit photo : ©Cyril Fresillon - ISTO - CNRS Photothèque Le comité de pilotage du DIM PAMIR (Domaine de Recherche et d'Innovation Majeur - Patrimoines matériels – innovation, expérimentation, résilience) a voté, au titre de l'Appel à Projets 2023 au fil de l'eau, le financement de projet d'équipement EXTRAAAAAA : EXTRAction AutomAtisée et Améliorée de biomArqueurs moléculAires.

Ice core and marine archives provide detailed quantitative records of last glacial climate changes, whereas comparable terrestrial records from the mid-latitudes remain scarce.

When could compound events emerge in the future? Separating changes in univariate and dependence properties by Bastien François   High-impact climate events such as floods or wildfires often result from interactions between several climate phenomena, also referred to as “compound events” [1].

Changes in temperature–precipitation correlations over Europe:  Are climate models reliable? by Mathieu Vrac, Soulivanh Thao, Pascal Yiou Inter-variable correlations (e.g.

Should Multivariate Bias Corrections of Climate Simulations Account for Changes of Rank Correlation Over Time? by M. Vrac, S. Thao, P.

Auteurs: Tristan Vadsaria, Sébastien Zaragosi, Gilles Ramstein, Jean‑Claude Dutay, Laurent Li, Giuseppe Siani, Marie Revel, Takashi Obase & Ayako Abe‑Ouchi Publié dans Scientific Reports, le 19 mai 2022 https://doi.org/10.

Changes in the climate dynamics have already modified characteristics and impacts of storms in France: the case  study of storm Alex 2020 by Mireia Ginesta Extratropical cyclones play a key role in modulating the precipitation and wind in mid-latitudes and can be responsible for extreme wet and windy events.

Can we attribute the intense precipitation event in the Brisbane region in February 2022 to climate change? Camille Cadiou, Robin Noyelle, Nemo Malhomme & Davide Faranda   From the last week of February to mid-March 2022, the eastern coast of Australia faced an episode of intense rainfall.

Annuellement, une centaine de chercheurs postdoctoraux, toutes sciences confondues, remportent les prestigieuses bourses Banting en démontrant leur leadership et leur excellence en recherche.

A weather ensemble forecasting tool based on statistical and probabilistic methods Ensemble weather forecasts can help to anticipate the risks and probabilities of extreme weather events. Nevertheless, weather forecasting is a complex task due to the chaotic behavior of the atmosphere [1].

​Une équipe du LSCE (CEA-CNRS-UVSQ) a participé à des travaux de reconstruction des températures et précipitations pour les continents, à la dernière époque glaciaire, à partir de granules de vers de terre.

à l'occasion du colloque "post-inondation" organisé par le Cluster Eau-Milieu-Sols le 11/10/2022 Pour dimensionner les aménagements de protection contre les inondations, les aménageurs et gestionnaires utilisent des "pluies de projet" qui sont souvent trop faibles par rapport au vrai risque climatique.

Attributing Extreme Events to Climate Change using Observations and taking into account the Atmospheric Circulation   When extreme events are very rare, it is often difficult to prove that their probability of occurrence has changed due to climate change.

La tornade du 23/1022 en France: Analyse météo et lien avec le Réchauffement Climatique  Flavio Pons  (flavio.pons@lsce.ipsl.

Our colleague Jonathan Barichivich has estimated the age of this alerce at 5,484 years. Article in The Guardian: https://www.theguardian.com/environment/2022/sep/23/gran-abuelo-chile-world-oldest-living-tree-alerce French podcat: https://www.airzen.

​Deux chercheuses du LSCE (CEA-CNRS-UVSQ) ont publié un article dans un numéro hors-série d'Archeologia à l'occasion de l'inauguration du fac-similé de la grotte Cosquer dans le département des Bouches-du-Rhône.

This Open Access volume highlights how tree ring stable isotopes have been used to address a range of environmental issues from paleoclimatology to forest management, and anthropogenic impacts on forest growth. It will further evaluate weaknesses and strengths of isotope applications in tree rings.

Along the coasts of northern Alaska, in a treeless tundra environment, the primary wood resource for coastal populations is driftwood, a seasonal and exogenous resource carried by the major rivers of western North America.

Hydroclimate variability in tropical South America is strongly regulated by the South American Summer Monsoon (SASM). However, past precipitation changes are poorly constrained due to limited observations and high-resolution paleoproxies.

L’anticipation des effets du changement climatique est désormais un objectif de plus en plus partagé.

Notre-Dame de Paris, the so famous Catholic cathedral standing on Ile de la Cité in Paris, was built in 1163, largely completed by 1260, then frequently modified in the following centuries until a major restoration between 1844 and 1864.

Tree-ring width (TRW) chronologies have been widely and long-time used to reconstruct past climate variations in the Andes in South America. The use of tree-ring isotopic chronologies is still not widespread in this region although they have proved to be very efficient climate proxies.

Authors: Mohamed Ayache, Jean-Claude Dutay, Kazuyo Tachikawa, Gilles Ramstein, Laurent Li, Thomas Arsouze, Camille Risi, Anne Mouchet, Laurence Vidal, and Catherine Jeandel Our present knowledge of ocean ventilation relies on the distributions of hydrographic tracers such as oxygen and neodymium; (i) the oxygen isotopic composition (δ18O) of ocean water varies as a function of the evaporation–precipitation balance and water mass mixing.