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Precipitation rnonitoring is a rnain task for weather radar applications. In quantitative applications, as estirnation of the rain rate, the fundamental quantity is the rneasurernent of the intensity of the retum signal strength, giving the so called reflectivity factor, or reflectivity, which is …

The Swedish Regional Clirnate Modeling Program (SWECLIM) is a 6-year national research effort with the airn of providing the Swedish society with more detailed regional climate scenarios than typically available from international global clirnate rnodel simulations. The background is the perceived …

Temperature, salinity, sea ice and sea leve! in the Baltic Sea have been analyzed under different climate conditions using a 3D coupled ice-ocean mode!. As a reference, hindcast simulations for the period 1980-93 have been performed with observed three-hourly meteorological forcing fields and …

Today, modern analysis systems synthesise meteorological data from a number of sources, e.g.\ round based SYNOP, satellites, radar, etc., into field information which enable us to model radiation at the Earth’s surface on the mesoscale. At the Swedish Meteorological and Hydrological Institute …

A ten-year NOAA A VHRR cloud climatology with a horizontal resolution of four km has been compiled over the Scandinavian region based on results from near real-lime cloud classifications of the SMHl SCANDlA mode!. The frequency and geographic distribution ofthe cloud groups Low-, Medium- and …

A new version of the land surface scheme has been completed and is now applied in comparative tests of version 2 of the Rossby Centre Regional Atmospheric Climate Model (RCA2) using analysed fields from the ECMWF reanalysis project (ERA). The scheme contains two soil layers and a vegetation layer. …

A statistical mode! is developed to reconstruct atmospheric surface data for the period 1902-I998 to force a coupled ocean-sea ice mode! of the Baltic Sea. As the longest time scale of the Baltic Sea is on the order of 30 years, climate relevant model studies should cover century Iong …

The present report describes the calculation of dry deposition in the Multi scale Atmospheric Transport and Chemistry modeling system (MATCH) applied in environmental monitoring studies. For this type of applications dry deposition is parameterized by means of a resistance concept. Modeled dry …