DATE2018-05-24 09:50:11
IDABSTRACT20180524095011-0120
CONTACTpiero.lionello@unisalento.it
PRESENTATIONPOSTER
INVITED0
IDSESSION1
TITLETHE LINK BETWEEN MEDITERRANEAN STORM TRACK AND SEA LEVEL ANOMALIES ALONG THE MEDITERRANEAN COASTLINE
AUTHORSLionello Piero (1,2), Conte Dario (2), Reale Marco (3)
AFFILIATIONS
  1. Università del Salento, Di.S.Te.B.A., via per Monteroni 164, Lecce
  2. CMCC , Centro Euro-Mediterraneo per i Cambiamenti Climatici
  3. OGS, Trieste, Italy
ABSTRACTThis contribution aims to show how both positive and negative sea level anomalies are related to intensity and position of cyclones moving along the Mediterranean storm track. This is not meant to suggest that sea level pressure minima produce a sea level decrease, but that the superposition of wind and sea level pressure gradient across the basin produce both positive and negative anomalies at several coastal locations as cyclones move over the surface of the Mediterranean basin. The analysis is based on sea level hindcasts complemented with a set of observed coastal sea level time series. It shows the presence of a sort of “teleconnection” (acting at a time scale from hours todays), which implies that a link between cyclone position and sea level is present for both positive and negative sea level anomalies. Anyway, it is confirmed that the dependence of the magnitude of the anomalies on the value of the low pressure minima is much stronger for positive than for negative sea level anomalies. Infact, sea level anomalies are produced by the inverse barometer effect, the action of the wind and a residual water mass redistribution within the basin, which, particularly, for negative sea level anomalies, play an important role and determines a link with cyclone position and intensity.
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