Åke Johansson


Phone: +46 11 495 8453

E-mail: firstname.lastname@smhi.se

Research areas

Research and development aimed at improving and refining the methodology on which ensemble forecasting is based. The work includes

  • Development of methodologies to construct equally probable ensemble members. This work is closely related to the research area data assimilation.
  • Development of methodologies aimed at more accurately estimating and specifying the desirable spread of an ensemble prediction system at the initial time.
  • Development of verifications which more accurately and realistically measures the quality of an ensemble prediction system.
  • Development of verification methodologies which produces similar results regardless of whether the verification is done against observations or analysis.

The work is done within the international HIRLAM-ALADIN cooperation for Limited Area Weather Forecasting.

Follows the development – research and practical applications – in seasonal forecasting, especially regarding the predictability of the NAO (North Atlantic Oscillation) och ENSO (El Niño-Southern Oscillation). 

Research interests and special competence

  • Dynamic meteorology and its practical application in short and medium-range Numerical Weather Prediction (NWP)  
  • Predictability, non-linear dynamical systems and chaos theory 
  • Low-frequency phenomena such as NAO and ENSO and its importance and relevance for longer range forecasting (sub-seasonal and seasonal forecasting)
  • Empirical and statistical methods in meteorology and climatology


Latest publications from Åke Johansson

  1. Bojarova,Jelena
    The ETKF rescaling scheme in HIRLAM
    In: Tellus. Series A, Dynamic meteorology and oceanography, Vol. 63, no 3, 385-401 p.
    DOI: 10.1111/j.1600-0870.2011.00513.x
  2. Van den Dool,H. M.
    Seasonal-to-decadal predictability and prediction of North American climate - The Atlantic influence
    In: Journal of Climate, Vol. 19, no 23, 6005-6024 p.
    DOI: 10.1175/JCLI3942.1
  3. van den Dool,H M
    Empirical orthogonal teleconnections
    In: Journal of Climate, Vol. 13, no 8, 1421-1435 p.
    DOI: 10.1175/1520-0442(2000)013<1421:EOT>2.0.CO;2