Archives par mot-clé : History

Learning from the climate’s history: the Arctic heat waves of the 1930s and 40s

by Dr. Sebastian Lüning and Prof. Fritz Vahrenholt [German text translated/edited by P Gosselin] , April 1, 2017


Now let’s extend the time scale and look back 100 years. What a surprise: In the 1930s and 1940s there were two heat decades in the Arctic which were almost as warm as today (Fig. 2). This is just a small fact that went missing in the WMO press release and in the derwesten.de article.

A Twenty-Six Decade Record of Atlantic Hurricanes

R. Garibaldi et al., 2016

Journal of Atmospheric and Solar-Terrestrial Physics, 148, 48-52


As for the potential cause behind the downward trend, Rojo-Garibaldi et al. examined the possibility of a solar influence, performing a series of additional statistical analyses (spectral, wavelet and coherence wavelet transform) on the hurricane database, as well as a sunspot database obtained from the Solar Influences Data Analysis Center of the Solar Physics Department of the Royal Observatory of Belgium. Therein, their exploratory analyses revealed that “this decline is related to an increase in sunspot activity.”

Les sociétés méditerranéennes à l’épreuve du climat 1500-1850

Prof. Emmanuel Granier

(Historien du climat, Institut Universitaire de France), 2011


L’étude concerne l’histoire du climat dans le bassin méditerranéen septentrional (Italie, France, Espagne) entre les XVIe et XIXe siècles. Préalablement, elle présente un état de l’art dans les domaines historiographique, documentaire et méthodologique pour les pays de l’Europe méditerranéenne. Puis, ce travail aborde la question des fluctuations en proposant successivement des reconstructions instrumentales et phénologiques (blé, olives et vendanges).

Selon E. Granier, l’espérance de vie moyenne d’un événement anormal dans la mémoire des gens est de l’ordre de 2 à 5 ans.