Cartographic representation of climate spatial variability in Greece

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Owner: stam

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Last Updated: 15-02-2016 3:11

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A gridded dataset representing near surface climate fields has been developed to allow spatial analysis of climate patterns over an area with significant climate spatiotemporal variability, Greece. The climate elements considered are means of minimum and maximum temperatures, means of relative humidity and heat index of the maximum temperature, monthly and annual accumulated precipitation. The extracted climatology is based on the gridded ECMWF daily analyses interpolated on a fine regular 0.25°x0.25° grid. The quality and mainly the high horizontal resolution of analyses dataset are able to resolve climate patterns on a regional scale which is critical for an area with complex physiographic characteristics. Advanced statistical
methods, such as optimal averaging on annual and monthly basis for 18 year reference period (1990-2007), are applied in order to produce long-term means for the continuous fields. Monthly and annual averages of accumulated precipitation for the period of 1980-2001 have also been created from near to analyses ECMWF forecasts. Although precipitation is a prognostic
field it contains considerably useful information for the climatic patterns of rainfall over Greece. The extracted dataset has been accordingly formatted in order to allow visualization of the climate surfaces using Geographic Information Systems.

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