Transmission Coefficient of Meteorological Information over the Greek Archipelago
Petrakis, M., Akylas, E., Giannakopoulos, C., Psiloglou, B., Lianou, M., Kassomenos, P.
EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract 9096
The fraction of meteorological information available at each part of the Greek Archipelago is examined in this study. The area is of primary importance regarding meteorological information since it gathers the main tourist activity of the country. The key parameter in this investigation is the transmission coefficient of information (TCI), which demonstrates the coverage of the area with meteorological information from the existing stations. TCI values are calculated for each pair from 12 meteorological stations available in the area of interest. The calculations are based on hourly data of the air temperature, which have been classified in several width categories. The dependence of TCI on the spatial distribution of the stations is examined and semi-empirical relations have been evaluated. According to these relations, a scheme of spatial interpolation of TCI has been constructed and illustrated using advanced GIS techniques. The monthly distributions of the TCI values follow a decreasing trend as the step width of the classification increases, while on annual basis this trend reverses and the distributions become more uniform. This significant monthly variation is attributed to the specific characteristics of the islands’ microclimate with the prevalence of specific winds, especially during the summer period, like the etesians.
Petrakis, M., Akylas, E., Giannakopoulos, C., Psiloglou, B., Lianou, M., Kassomenos, P.
EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract 9096
The fraction of meteorological information available at each part of the Greek Archipelago is examined in this study. The area is of primary importance regarding meteorological information since it gathers the main tourist activity of the country. The key parameter in this investigation is the transmission coefficient of information (TCI), which demonstrates the coverage of the area with meteorological information from the existing stations. TCI values are calculated for each pair from 12 meteorological stations available in the area of interest. The calculations are based on hourly data of the air temperature, which have been classified in several width categories. The dependence of TCI on the spatial distribution of the stations is examined and semi-empirical relations have been evaluated. According to these relations, a scheme of spatial interpolation of TCI has been constructed and illustrated using advanced GIS techniques. The monthly distributions of the TCI values follow a decreasing trend as the step width of the classification increases, while on annual basis this trend reverses and the distributions become more uniform. This significant monthly variation is attributed to the specific characteristics of the islands’ microclimate with the prevalence of specific winds, especially during the summer period, like the etesians.