With deepest sadness we must share with you the news that Geert Jan van Oldenborgh, dear friend, amazing scientist, co-founder and co-leader of World Weather Attribution, husband and father, and a wonderful human, passed away on 12 October 2021.
From the 12th to the 15th of July, heavy rainfall associated with cut-off low-pressure system “Bernd” led to severe flooding particularly in the German states North Rhine-Westphalia and Rhineland-Palatinate, as well as in Luxembourg, and along the river Meuse and some of its tributaries in Belgium and the Netherlands.
During the last days of June 2021, Pacific northwest areas of the U.S. and Canada experienced temperatures never previously observed, with records broken in many places by several degrees Celsius.
In our latest study, scientists from France, Germany, Netherlands, and the UK collaborated to examine whether and to what extent human-induced climate change had a part to play in the cold early April following a very warm March 2021 that led to large scale frost damages in grapevines and fruit trees in central France.
Experiences from the World Weather Attribution collaboration: We attempt to answer the question whether and to what extent the likelihood and intensity of an observed event changed due to the anthropogenic modification of the Earth’s climate using a method called extreme event attribution.