Atmospheric flow over Iceland has been simulated for the period January 1961 to July 2006, using the mesoscale MM5 model driven by initial and boundary data from the European Centre for Medium Range Weather Forecasts (ECMWF). Firstly, the simulated precipitation is compared to estimates derived from mass balance measurements on the Icelandic ice caps. It is found that the simulated precipitation compares favourably with the observed winter balance, in particular for Hofsjökull, where corrections to take liquid precipitation and/or winter ablation into account have been made, and for the outlet glaciers Dyngjujökull and Brúarjökull. Secondly, the model output is used as input to the WaSiM hydrological model to calculate and compare the runoff with observed runoff from six watersheds in Iceland. It is found that model results compare favourably with observations. Overall, the MM5 V3–7 is somewhat better than the MM5 V3–5. The V3–7 is drier than V3–5 on upstream slopes.
Research Article|April 01 2010
Dynamical downscaling of precipitation in Iceland 1961–2006
1Institute for Meteorological Research, Orkugarður, Grensásvegur 9, 108 Reykjavík, Iceland and Bergen School of Meteorology, Geophysical Institute, University of Bergen, Bergen, Norway
Search for other works by this author on:
Jóna Finndís Jónsdóttir
Ólafur Rögnvaldsson, Jóna Finndís Jónsdóttir, Haraldur Ólafsson; Dynamical downscaling of precipitation in Iceland 1961–2006. Hydrology Research 1 June 2010; 41 (3-4): 153–163. doi: https://doi.org/10.2166/nh.2010.132
Download citation file: