geonode:frequencies_of_occurrenc_ygwka Significant wave height Hs is the considered parameter. Wave height isopleths are the locus of sites where the frequency of occurrence of the wave event (below or above a specific threshold) has a constant value. This constant value (in %) is depicted on each isopleth. Considered threshold values are: 0.5, 1.24, 2.5 and 4 m. Seasonal resolution: annual – all months; autumn – September, October, November; winter – December, January, February; spring – March, April, Mat; summer – June, July, August. Data are extracted by the Wind and Wave Atlas of the Mediterranean Sea. The atlas is the result of the Medatlas project led between 1999 and 2004 by a consortia of six partners (NTU - Greece, CS SI – France, ISMAR-CNR – Italy, Thetis – Italy, Semantic TS – France, Meteo France – France) and that was funded by the former Western European Union – WEAO Research Cell. The main objective of the atlas was to provide reliable long term wind and wave statistics at specified points of the Mediterranean Sea (at about 50 km intervals) and to provide derived maps of main parameters distribution features EPSG:4326 CRS:84 12.3400873842593 19.5324450231481 40.7560717592593 44.8724525462963 other other text/xml other other other other