Estimation of the monthly and annual mean maximum and mean minimum air temperature values in Greece |
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Authors: | M A Gouvas N K Sakellariou H D Kambezidis |
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Institution: | 1. National Observatory of Athens, Institute for Environmental Research and Sustainable Development, Atmospheric Research Team, PO Box 20048, 11810, Athens, Greece
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Abstract: | In this study, regression equations to estimate the monthly and annual values of the mean maximum and mean minimum air temperatures in Greece are derived. For this purpose, data from 87 meteorological stations distributed all over Greece are used. Geographical parameters, i.e., altitude, latitude, longitude, minimum distance from the sea and an index of terrain morphology, are used as independent variables. These equations explain 79?C97% of the variance of the temperature values and have standard error of estimate between 0.59 and 1.20°C. Data from 37 other meteorological stations are used to validate the accuracy of the equations. Topographic or climatic factors, which could not be introduced into the equations, are responsible for most temperature residuals >0.5°C or <?0.5°C. Moreover, some particular emphasis has been given to the values of the regression coefficient for the altitude, since it is the estimator for the mean lapse rate of air temperature. |
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