Search results for "HIRLAM"
showing 3 items of 3 documents
Īstermiņa hidroloģisko prognožu salīdzinošā analīze 2013. un 2014.gadu hidroloģiskajās fāzēs: Irbes, Abavas, Bērzes, Gaujas, Ogres un Dubnas upju bas…
2015
Maģistra darba tēma ir „Īstermiņa hidroloģisko prognožu salīdzinošā analīze 2013. un 2014. gadu hidroloģiskajās fāzēs: Irbes, Abavas, Bērzes, Gaujas, Ogres un Dubnas upju baseinu piemēros”. Darba mērķis ir novērtēt, kura skaitliskā meteoroloģiskā modeļa HIRLAM vai ECMWF laika apstākļu prognozes ļauj modelēt precīzākās īstermiņa hidroloģiskās prognozes sešiem pētītajiem Latvijas upju baseiniem. Literatūras analīzē aplūkota hidroloģiskā modelēšana, modeļu veidi un to pielietojums hidroloģisko prognožu modelēšanā apvienojumā ar skaitlisko meteoroloģisko modeļu HIRLAM un ECMWF laikapstākļu prognozēm. Pētnieciskajā daļā tika modelētas īstermiņa hidroloģiskās prognozes sešiem pētītajiem upju base…
Sea breeze thunderstorms in the eastern Iberian Peninsula. Neighborhood verification of HIRLAM and HARMONIE precipitation forecasts
2014
In this study we investigated sea breeze thunderstorms with intense convective activity (i.e., heavy rainfall, hail and gusty winds) that occurred over the eastern Iberian Peninsula (Spain) and were missed by the operational HIRLAM model. We used two grid-spacing setups (5.0. km and 2.5. km) of the hydrostatic HIRLAM model, and the non-hydrostatic spectral HARMONIE suite (2.5. km), to simulate isolated convection associated with sea breezes. The overall aim is to estimate the ability of these three experimental setups, in particular the HARMONIE model as the forthcoming operational numerical weather prediction in most European Weather Services, to correctly simulate convective precipitation…
Assessment of the Present and Future Offshore Wind Power Potential: A Case Study in a Target Territory of the Baltic Sea Near the Latvian Coast
2013
Offshore wind energy development promises to be a significant domestic renewable energy source in Latvia. The reliable prediction of present and future wind resources at offshore sites is crucial for planning and selecting the location for wind farms. The overall goal of this paper is the assessment of offshore wind power potential in a target territory of the Baltic Sea near the Latvian coast as well as the identification of a trend in the future wind energy potential for the study territory. The regional climate model CLM and High Resolution Limited Area Model (Hirlam) simulations were used to obtain the wind climatology data for the study area. The results indicated that offshore wind en…