Séminaire
Titre :
Arctic warming and sea ice decline driven by atmospheric moist intrusions
Nom du conférencier :
R. Caballero
Son affiliation :
Univ. Stockholm
Laboratoire organisateur : LMD
Date et heure : 20-04-2018 14h00
Lieu :
Ecole Normale Supérieure, 24 rue Lhomond, salle E314
Résumé :
The Arctic is the region where the most dramatic climate change is expected. There is increasing observational evidence that the Arctic winter climate is strongly controlled by filamentary intrusions of moist, warm air–akin to the atmospheric rivers of lower latitudes–which cross the entire basin. I will discuss how the statistical distribution of these intrusions is affected by large-scale atmospheric circulation, particularly midlatitude storm track activity and blocking events; how the intrusions affect surface temperature and sea ice concentration; and how they contribute to Arctic extreme events.
Contact :
bruno.deremble@ens.fr