CV Sami Niemelä

Title Head of the Group, Numerical Weather Prediction

Postal address Finnish Meteorological Institute (FMI) Meteorology P.O.Box 503, FI-00101 Helsinki

Street address Finnish Meteorological Institute (FMI) Meteorology, Erik Palmenin aukio 1, 00560 Helsinki, Finland

Phone number +358 (0) 9 1929 4172

Fax +358 (0) 9 1929 4103

Fields of expertise

  • High resolution numerical weather prediction models.
  • Convection processes and parameterization schemes.
  • Radiation processes and parameterization schemes.

List of publications

Tisler P., Gregow E., Niemelä S. and Savijärvi H. (2006): Wind field prediction in coastal zone: operational mesoscale model evaluation and simulations with increased horizontal resolution. Accepted in Journal of Coastal Research.

Niemelä S. and Fortelius C. (2005): Applicability of large scale convection and condensation parameterization to meso-gamma-scale HIRLAM: a case study of a convective event. Mon. Wea. Rev., 133, No. 8, 2422-2435.

Savijärvi H., Niemelä S. and Tisler P. (2005): Coastal winds and low level jets: Simulations for sea gulfs. Q. J. R. Meteorol. Soc., 131, No. 606, 625-637.

Niemelä S., Räisänen P. and Savijärvi H. (2001): Comparison of surface radiative flux parameterizations Part II: Shortwave radiation. Atmos. Res., 58, 141-154.

Niemelä S., Räisänen P. and Savijärvi H. (2001): Comparison of surface radiative flux parameterizations Part I: Longwave radiation. Atmos. Res., 58, 1-18.
Other publications
Niemelä S. and Fortelius C.(2005): Applicability of large-scale convection and condensation parameterization to meso-gamma scales. Research activities in atmospheric and oceanic modelling, 35, Chapter 4, 25-26.

Järvenoja S., Eerola K., Fortelius C., Kangas M., Niemelä S. and Sokka N. (2004): Validation of RCR for spring and summer 2004. Hirlam Newsletter, 46 (November), 78-100.

Niemelä S. and Loridan T.(2004): The flood case 27-29 July 2004: added value of the meso-gamma-scale HIRLAM? Hirlam Newsletter, 46 (November), 48-58.

Savijärvi H., Kauhanen J., Lauros J., Matthews S., Määttänen A., Niemelä S., Pirazzini R., and Tisler P. (2003): Numerical studies of atmospheric processes and atmospheric flows on Earth and Mars. CSC report on scientific computing 2001-2003, 201-203.

Niemelä S. and Fortelius C. (2002): Comparison of convection and condensation schemes under non-hydrostatic Hirlam-model: A case study. Hirlam Newsletter, 41 (June), 125-130.

Conference abstracts and publications

Niemelä S. and Fortelius C. (2005): Applicability of grid-size-dependent convection parameterization to meso-gamma-scale HIRLAM. 17th Conference on Numerical Weather Prediction, Washington D.C., USA, 1-5 Aug 2005, Amer. Meteor. Soc.

Niemelä S. (2005): The flood case 27-29 July 2004. HIRLAM/NetFAM Workshop on Convection and Clouds, Tartu, Estonia, 24-26 Jan 2005

Niemelä S. and Fortelius C. (2004): Convection in hydrostatic and non-hydrostatic HIRLAM. Baltic HIRLAM Workshop, St.Petersburg, Russia, 17-20 Nov 2003

Niemelä S. and Savijärvi H. (2004): Numerical methods and modelling at the Division of Atmospheric Sciences at Helsinki University. Baltic HIRLAM Workshop, St.Petersburg, Russia, 17-20 Nov 2003

Niemelä S. and Fortelius C. (2003): Representation of convection under hydrostatic and non-hydrostatic HIRLAM: a case study of the convective event. DWD Forschung und Entwicklung Arbeitsergebnisse ,78, 5th International SRNWP-Workshop on Non-hydrostatic Modelling in Bad Orb, Germany, 27-29 Oct 2003

Niemelä S. (2002): Convection and condensation studies under hydrostatic and non-hydrostatic HIRLAM. HIRLAM Workshop on Mesoscale Modelling, Dublin, Ireland, 14-16 Oct 2002. HIRLAM-5 Project, c/o Per Unden, SMHI, S-601 76 Norrköping, Sweden.

Niemelä S. and Fortelius C. (2002): Comparison of convection and condensation schemes under non-hydrostatic Hirlam-model: A case study. 23. Nordic Meteorology Meeting, in Copenhagen, Denmark, 27-31 May 2002