Climate Dynamics

, Volume 41, Issue 5, pp 1333–1344

Ensemble reconstruction of the atmospheric column from surface pressure using analogues

  • Pascal Yiou
  • Tamara Salameh
  • Philippe Drobinski
  • Laurent Menut
  • Robert Vautard
  • Mathieu Vrac
Article

DOI: 10.1007/s00382-012-1626-3

Cite this article as:
Yiou, P., Salameh, T., Drobinski, P. et al. Clim Dyn (2013) 41: 1333. doi:10.1007/s00382-012-1626-3

Abstract

We present a statistical method to reconstruct continuous atmospheric fields on various pressure levels, given a constraint at the surface. The method is based on analogues of circulation and taking into consideration the time sequence of the analogues. The method is tested on the 2001–2011 period, with an emphasis on the year 2010. We base the atmospheric reconstruction on reanalysis data from 1948 to 2000, and use a constraint of sea-level pressure for 2001–2011. The pattern correlation scores appear to be significant most of the time, although score flaws are occasionally detected. Those flaws are mainly due to the time continuity constraint that is imposed on the reconstruction, which lowers the possibility of finding matching analogues. This method offers an ensemble of atmospheric reconstructions, and presents a computationally cheap alternative to data assimilation for a climate model, although with lower scores.

Keywords

Circulation analoguesClimate reconstructionsNorth Atlantic variability

Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Pascal Yiou
    • 1
  • Tamara Salameh
    • 1
  • Philippe Drobinski
    • 2
  • Laurent Menut
    • 2
  • Robert Vautard
    • 1
  • Mathieu Vrac
    • 1
  1. 1.Laboratoire des Sciences du Climat et de l’EnvironnementUMR CEA-CNRS-UVSQGif-sur-YvetteFrance
  2. 2.Laboratoire de Météorologie DynamiqueUMR CNRS-UPMC-ENS-XPalaiseauFrance