Start Submission Become a Reviewer

Reading: An extreme precipitation event in Central Norway

Download

A- A+
Alt. Display

Original Research Papers

An extreme precipitation event in Central Norway

Authors:

Birthe Marie Steensen ,

Geophysical Institute, University of Bergen, P.O. Box 7803, NO-5020 Bergen, NO
X close

Haraldur Ólafsson,

Geophysical Institute, University of Bergen, P.O. Box 7803, NO-5020 Bergen, NO; Department of Physics, University of Iceland, Reykjavik; Icelandic Meteorological Office, Bustadavegi 9, IS-150 Reykjavik, IS
X close

Marius O. Jonassen

Geophysical Institute, University of Bergen, P.O. Box 7803, NO-5020 Bergen, NO
X close

Abstract

At the end of January and beginning of February 2006, an extreme precipitation event occurred over Central Norway. The precipitation in addition to warm temperatures produced flooding and landslides that caused considerable damage to infrastructure. The event is explored with conventional data, data from remote sensing and numerical simulations. It is shown that there was very little quasi-geostrophic forcing during the event and that the extreme precipitation is locally generated by strong and persistent winds impinging the mountains. The mountains in the southwestern part of Norway, far away from the precipitation, contributed significantly to the extreme, by blocking, deflection and enhancement of the low-level flow. The warm and humid air masses involved are shown to originate in the subtropics. Assessment of forecasts with different lead times reveal a sensitivity to a baroclinic system to the east of Newfoundland upstream of the event in Central Norway.

How to Cite: Steensen, B.M., Ólafsson, H. and Jonassen, M.O., 2011. An extreme precipitation event in Central Norway. Tellus A: Dynamic Meteorology and Oceanography, 63(4), pp.675–686. DOI: http://doi.org/10.1111/j.1600-0870.2011.00522.x
4
Citations
  Published on 01 Jan 2011
 Accepted on 9 Mar 2011            Submitted on 14 Sep 2010

References

  1. Andersson , A. , Balcan , S. , Fennig , K. , Grassi , H. , Klepp , C. H. and co-authors . 2007 . Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite Data - HOAPS-3: twice daily composite. World Data Center for Climate https://doi.org/10.1594/VVDCC/HOAPS3_DAILY  

  2. Beldring , S. , Engen-Slcaugen , T. , Forland , E. J. and Roald , L. A . 2008 . Climate change impacts on hydrological processes in Norway based on two methods for transferring regional climate model results to meteorological station sites . Tellus 60A , 439 – 450 .  

  3. Benestad , R. E. and Haugen , J. E . 2007 . On complex extremes: flood hazards and combined high spring-time precipitation and tempera-ture in Norway . Clim. Change 85 , 381 – 406 . https://doi.org/10.1007/s10584-007-9263-2 .  

  4. Draxler , R. R. and Rolph , G. D . 2010 . HYSPLIT (HYbrid Single-Particle Lagrangian Integrated Trajectory) Model access via NOAA ARL READY Website (http://ready . arl.noaa.gov/HYSPLIT.php). NOAA Air Resources Laboratory, Silver Spring, MD , U.S.A .  

  5. Hagen , B . 2008 . Wind extremes in the Nordic Seas: dynamics and fore-casting , Master Thesis , Geophysical Institute , University of Bergen  

  6. Hanssen-Bauer , I. , Forland , E. J. , Haugen , J. E. and Tveito , O. E. 2003 . Temperature and precipitation scenarios for Norway: comparison of results from dynamical and empirical downscaling. Clim. Res . 25 , 15 - 27 .  

  7. Haugen , J. E. and Iversen , T . 2008 . Response in extremes of daily precipitation and wind from a downscaled multi-model ensemble of anthropogenic global climate change scenarios . Tellus 60A , 411 – 426 .  

  8. Holton , J. R . 2004 . An Introduction to Dynamic Meteorology . 4th Edi-tion , Elsevier Academic press , London , 164 pp .  

  9. Hunt , J. C. R ., olafsson , H. and Bougeault , P. 2001. Coriolis effects on orographic and mesoscale flows. Q. J. R. MeteoroL Soc . 56 , 601 - 633 .  

  10. Kalnay , E. and co-authors . 1996 . The NCEP/NCAR Reanalysis 40-year Project. Bull. Am. MeteoroL Soc . 77 , 437 - 471 .  

  11. Mohr , M . 2008 . New routines for gridding of temperature and precipitation observations for `seNorge . no. Met.no Report , pp. 40 .  

  12. álafsson , H. and Bougeault , P. 1996 . Nonlinear flow past an elliptic mounatin ridge. J. Atmos. Sc i . 127 , 2465 – 2489 .  

  13. álafsson , H. and Bougeault , P. 1997 . The effect of rotation and surface friction on orographic drag. J. Atmos. Sc i . 54 , 193 – 210 .  

  14. álafsson , H. 2000 . The impact of flow regimes on asymmetry of oro-graphic drag at moderate and low Rossby numbers . Tellus 52A , 365 – 379 .  

  15. Pierrehumbert , R. T. and Wyman B . 1985 . Upstream effects of mesoscale mountains. J. Atmos. Sc i . 42 , 977 – 1003 .  

  16. Rabier , F. , Klinker , E. , Courtier , P. and Hollingsworth , A . 1996 . Sensi-tivity of forecast errors to initial conditions . Q. J. R. Meteoml. Soc . 122 , 121 – 150 .  

  17. Reuder , J. , Fagerlid , G. O. , Barstad , I. and Sandvik , A. 2007. Stord Oro-graphic Precipitation Experiment (STOPEX): an overview of phase 1. Adv. Geosci . 10 , 17 - 23 .  

  18. Rolph , G. D. 2010. Real-time Environmental Applications and Display System (READY) Website ( http://ready.arl.noaa.gov ). NOAA Air Re-sources Laboratory, Silver Spring, MD, U.S.A.  

  19. Skamarock , W. C. , Klemp , J. B. , Dudhia , J. , Gill , D. O. , Barker , D. M. and co-authors . 2008. A Description of the Advanced Research WRF Version 3. Ncar technical Note , p. 125.  

  20. Stohl , A. , Forster , C. and Sodemann , H . 2008 . Remote sources of water vapor forming precipitation on the Norwegian west coast at 60 N° : a tale of hurricanes and an atmospheric river. J. Geophys. Res.-Atmos . D113 , 402 – 416 .  

  21. Tveita , B . 2008 . Extreme winds in the Nordic Seas: an observational and numerical study , Master thesis , Geophysical Institute , University of Bergen .  

  22. Wentz , F. J. and Spencer , R. W . 2008 . ssmn Rain Within an Unified All-Weather Ocean Algoritm. J. Atmos. Sc i . 55 , 1613 – 1627 .  

comments powered by Disqus