Investigation of climatic variable's spatial distribution in Greece

The main purpose of the present diplomatic work is the investigation of territorial distribution of several climatic variables and their application in Greece with the use of G.I.S. (Geographic Information System). The investigation which is being attempted includes the measurement, recording, analysis and treatment of climatic data, which come from 40 meteorological stations in all Greece, aiming at the creation of climatic maps. To be more specific, a database of prices of various climatic variables was created in 40 stations in Greece for 32 possessed years (1965-1996). ). The 40 stations are placed in 5 regions in Peloponnese, 3 regions in Attica, 4 regions in Crete, 2 regions in Evia, 14 regions in central and northern continental Greece, as well as regions in the islands Chios, Skyros, Samos, Rhodes, Naxos, Mitilini, Milos, Limnos, Kithira, Corfu, Zakynthos and Kephalonia. The climatic data was available via the monthly weather forecasts of National Meteorological Service (E.M.Y.) and concerned elements for the temperature, the atmospheric pressure, the relative humidity, the sunshine, the total height of precipitation, the biggest height of precipitation in 24 hours, as well as the days of precipitation. An important observation that must be reported is that the 40 stations that were used, are all of the National Meteorological Service and obviously have been placed in areas, where exist airports. Therefore, these stations are not representative of the geographical morphology of Greece, which means that do not exist stations of measurements of meteorological variables in high altitudes, as for example in the tops of Pindos. Then, with suitable processing of this data became the import of databank in the System of Geographic Information (ArcGis) in the environment of ArcMap 9.0, where became also the production of climatic maps based on the monthly prices of climatic variables with histograms in the 40 stations in all Greece. The maps of total height of precipitation present particular interest, where we observe intensely that in Western Greece the rainfalls are enough more intense than Eastern and islander Greece. The same is observed with the relative humidity. On the other side, average monthly temperature is higher in Southern Greece and particularly in Crete, than in Nothern and Western regions. Finally, the methods of territorial completion of meteorological variables were analyzed and were created a line of maps with the application of the method Kriging on the average annual values of precipitation, temperature and the relative humidity in the Greek area.