Altimeter data have been routinely assimilated and used to assess the reliability of wave forecasts for many years. A more recent application of such data is to provide an indication of Small Scale Storm Variability (SSSV) due to the irregular wind structure at the sea level (“gustiness”). Both gustiness and SSSV have been examined by using Jason - 1, Jason - 2 and ESA Envisat altimeter SWH data along passes in enclosed seas. Statistical parameters have been extracted and compared with similar statistics from state-of-the-art Meteo/Wave models. A variability is shown to exist on a scale as low as the resolution of altimeter data - i.e. down to a few kilometres - while weather and wave models - even those with the highest resolution - show a much smoother behaviour.
SMALL SCALE STORM VARIABILITY AND SATELLITE ALTIMETER DATA
PUGLIESE CARRATELLI, Eugenio;DENTALE, Fabio;REALE, FERDINANDO;
2012-01-01
Abstract
Altimeter data have been routinely assimilated and used to assess the reliability of wave forecasts for many years. A more recent application of such data is to provide an indication of Small Scale Storm Variability (SSSV) due to the irregular wind structure at the sea level (“gustiness”). Both gustiness and SSSV have been examined by using Jason - 1, Jason - 2 and ESA Envisat altimeter SWH data along passes in enclosed seas. Statistical parameters have been extracted and compared with similar statistics from state-of-the-art Meteo/Wave models. A variability is shown to exist on a scale as low as the resolution of altimeter data - i.e. down to a few kilometres - while weather and wave models - even those with the highest resolution - show a much smoother behaviour.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
