Articles | Volume 3, issue 1
Research article
01 Mar 2022
Research article |  | 01 Mar 2022

Past evolution of western Europe large-scale circulation and link to precipitation trend in the northern French Alps

Antoine Blanc, Juliette Blanchet, and Jean-Dominique Creutin

Data sets

ERA5 hourly data on pressure levels from 1950 to 1978 (preliminary version) B. Bell, H. Hersbach, P. Berrisford, P. Dahlgren, A. Horányi, J. Muñoz Sabater, J. Nicolas, R. Radu, D. Schepers, A. Simmons, C. Soci, and J.-N. Thépaut!/dataset/reanalysis-era5-pressure-levels-preliminary-back-extension?tab=overview

The ERA5 global reanalysis (!/dataset/reanalysis-era5-pressure-levels?tab=overview) H. Hersbach, B. Bell, P. Berrisford, S. Hirahara, A. Horányi, J. Muñoz-Sabater, J. Nicolas, C. Peubey, R. Radu, D. Schepers, A. Simmons, C. Soci, S. Abdalla, X. Abellan, G. Balsamo, P. Bechtold, G. Biavati, J. Bidlot, M. Bonavita, G. De Chiara, P. Dahlgren, D. Dee, M. Diamantakis, R. Dragani, J. Flemming, R. Forbes, M. Fuentes, A. Geer, L. Haimberger, S. Healy, R. J. Hogan, E. Hólm, M. Janisková, S. Keeley, P. Laloyaux, P. Lopez, C. Lupu, G. Radnoti, P. de Rosnay, I. Rozum, F. Vamborg, S. Villaume, and J.-N. Thépaut

ERA20C reanalysis ECMWF

20th Century Reanalysis V2c data NOAA/OAR/ESRL PSL

Model code and software

R: A Language and Environment for Statistical Computing R Core Team

RStudio: Integrated Development Environment for R RStudio Team

Short summary
Precipitation variability and extremes in the northern French Alps are governed by the atmospheric circulation over western Europe. In this work, we study the past evolution of western Europe large-scale circulation using atmospheric descriptors. We show some discrepancies in the trends obtained from different reanalyses before 1950. After 1950, we find trends in Mediterranean circulations that appear to be linked with trends in seasonal and extreme precipitation in the northern French Alps.