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Presentation
WRF input parameter updates based on recent and long-term satellite observations
12th International Conference of Meteorology, Climatolog and Physics of the Atmosphere (CEMECAP 2014) (2014)
  • N. Benas
  • Nektarios Chrysoulakis
  • N. Christakis, University of Crete
  • G. Kossioris, University of Crete
  • M. Plexousakis, University of Crete
Abstract
Recent satellite-derived products are analyzed and processed in order to update input parameters of the meso-scale model WRF (Weather Research and Forecasting), used for the study and prediction of extreme weather events in Greece, in the framework of the AKAIPRO1 project. Updated input parameters include: the ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer, onboard Terra satellite) derived GDEM (Global Digital Elevation Model), which substantially improves the original WRF elevation spatial resolution and surface emissivity and albedo derived from MODIS (Moderate Resolution Imaging Spectroradiometer, onboard Terra and Aqua satellites) multi-year observations. These emissivity and albedo timeseries, covering Europe, northern Africa and the Middle East, were used to update corresponding WRF input tables based on land cover classification after statistical processing. Updated input parameters also include land cover maps extracted from ESA’s GlobCOVER product, based on MERIS (Medium Resolution Imaging Spectrometer, onboard Envisat platform) data. The processing and implementation procedures for updating the WRF input parameters are described in this study. WRF numerical simulations results and comparisons with data from meteorological stations are also presented, in order to assess the impact of the performed updates on the effectiveness of WRF in severe weather predictions.
Keywords
  • Earth Observation,
  • WRF modelling parameterization
Publication Date
May 31, 2014
Citation Information
Benas N., Chrysoulakis N., Christakis N., Kossioris G. and Plexousakis M., 2014. WRF input parameter updates based on recent and long-term satellite observations. In: Kanakidou, M., Mihalopoulos, N. and Nastos, P. (Eds): e-book of Contributions of the 12th International Conference of Meteorology, Climatolog and Physics of the Atmosphere (CEMECAP 2014), organized by University of Crete, Hellenic Meteorological Society and Mariolopoulos - Kanaginis Foundation for Environmental Sciences in Heraklion on May 28 - 31, Vol. 1, pp. 127 - 131.