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ECN publicatie:
Titel:
The influence of NAO on the interannual variability of tropospheric transport pathways in southern Europe
 
Auteur(s):
Orza, J.A.G.; Cabello Ganuza, M.; Vermeulen, A.T.
 
Gepubliceerd door: Publicatie datum:
ECN Biomassa, Kolen en Milieuonderzoek 20-10-2011
 
ECN publicatienummer: Publicatie type:
ECN-M--11-097 Conferentiebijdrage
 
Aantal pagina's: Volledige tekst:
2 Download PDF  (1907kB)

Samenvatting:
We present an exploratory study of the interannual variations in tropospheric transport pathways in southern Europe and its relationship to the North Atlantic Oscillation (NAO). Differences with atlantic european locations are also addressed. A significant fraction of the year-to-year meteorological variability in the Northern Hemisphere is associated with this pattern of pressure anomalies, which is typically characterized by the NAO index (NAOi) derived from the difference in surface pressure levels between Iceland and the Azores/Lisbon. This work relies on the identification of flow types by using cluster analysis of back-trajectories, and the association between variations in NAOi and the frequency of occurrence of the identified flow types for the winter months.


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