Calculation of solar irradiance i.e. shortwave radiation flux and the atmosphere's heat radiation i.e. longwave radiation flux is important. The radiative flux predicted by the HIRLAM weather model was compared to observations made in Jokioinen and Sodankylä. Extensive materials covering three hour averages over a period of ten years from 2006 to 2016 were used in the comparison. It was demonstrated that the models and observations were very similar to one another especially in cloudless conditions. When it was cloudy, the HIRLAM model's atmosphere seems to let a bit too much solar radiation through.
Researcher Laura Rontu, firstname.lastname@example.org
Laura Rontu, Emily Gleeson, Petri Räisänen, Kristian Pagh Nielsen, Hannu Savijärvi and Bent Hansen Sass : The HIRLAM fast radiation scheme for mesoscale numerical weather prediction models. Adv. Sci. Res., 14, 195–215, 2017.
The Finnish Meteorological Institute is a leading expert in meteorology, air quality, climate change, earth observation, marine and arctic research areas. FMI is in a unique position to study various themes of climate change in the Northern context.
High-quality observational data and research is utilized to develop services to benefit our everyday life. Visible examples are improvement of weather forecasts, development of new expert and warning services as well as applications of the newest research results.