DATE2016-05-28 15:16:46
IDABSTRACT20160528151646-0961
CONTACTpiero.lionello@unisalento.it
PRESENTATIONORAL-PLENARY
INVITED0
IDSESSION1
TITLEA MULTI-TRACKING METHOD CLIMATOLOGY OF CYCLONES CROSSING THE MEDITERRANEAN REGION
AUTHORSPiero Lionello (1,11), Isabel F. Trigo (2), Victoria Gil (3), Margarida L. Liberato (4), Katrin M. Nissen (5), Joaquim G. Pinto (6,7), Christoph C. Raible (8), Marco Reale (9), Annalisa Tanzarella (10), Ricardo M. Trigo (3), Sven Ulbrich (7), Uwe Ulbrich (5)
AFFILIATIONS
  1. Ipma, Instituto Português Do Mar E Da Atmosfera Lisbon (Portugal)
  2. Escola De Ciências E Tecnologia. Utad Vila-real (Portugal)
  3. Disteba, Univ. Of Salento Lecce (Italy)
  4. Idl, University Of Lisbon Lisbon (Portugal)
  5. Institute Fuer Meteorologie, Freie Universität Berlin Berlin (Germany)
  6. Department Of Meteorology, University Of Reading Reading (United Kingdom)
  7. Institute For Geophysics And Meteorology, University Of Col Cologne (Germany)
  8. Climate And Environmental Physics And Oeschger Center For Climate Change Research Bern (Switzerland)
  9. Ogs, Osservatorio Geofisico Sperime Trieste (Italy)
  10. Arpa, Agenzia Regional Per La Proyezione Dell'ambiente Taranto (Italy)
  11. Cmcc, Euro Mediterranean Center On Climate Change Lecce (Italy)
ABSTRACTThis study describes the climatological features of cyclones in the Mediterranean region and the level of consensus among 14 different cyclone detection and tracking methods, by applying them to the ERA-Interim dataset for the period 1979-2008. Substantial consensus on the interpretation of results regarding location, annual cycle and trends of cyclone tracks is found in spite of large differences in actual cyclone numbers among different methods. The main cyclogenetic areas (north-western Mediterranean, North Africa, north shore of the Levantine basin) and their seasonality are similar for most methods, which also agree that most of cyclones crossing the MR are generated inside the region, with the NW and NE sectors accounting for the largest share of cyclogeneses. The number of cyclones in the MR has a maximum in April and a flat minimum from June to October. However, this overall behaviour results from an annual cycle with slightly different phases in the four NW, NE, SW, and SE, which present two annual maxima, with the exception of SE. Significant negative trends in spring and positive trends in summer, whose contrasting effects compensate each other at annual scale, are detected in the 1979-2008 period.
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