 |
| Titel |
Variability in the air–sea interaction patterns and timescales within the south-eastern Bay of Biscay, as observed by HF radar data |
| VerfasserIn |
A. Fontán, G. Esnaola, J. Saénz, M. González |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1812-0784
|
| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 9, no. 2 ; Nr. 9, no. 2 (2013-04-03), S.399-410 |
| Datensatznummer |
250018044
|
| Publikation (Nr.) |
 copernicus.org/os-9-399-2013.pdf |
|
|
|
|
|
| Zusammenfassung |
| Two high-frequency (HF) radar stations were installed on the coast of the
south-eastern Bay of Biscay in 2009, providing high spatial and temporal
resolution and large spatial coverage of currents in the area for the first
time. This has made it possible to quantitatively assess the air–sea
interaction patterns and timescales for the period 2009–2010. The
analysis was conducted using the Barnett–Preisendorfer approach to
canonical correlation analysis (CCA) of reanalysis surface winds and HF
radar-derived surface currents. The CCA yields two canonical patterns: the
first wind–current interaction pattern corresponds to the classical Ekman
drift at the sea surface, whilst the second describes an
anticyclonic/cyclonic surface circulation. The results obtained demonstrate
that local winds play an important role in driving the upper water
circulation. The wind–current interaction timescales are mainly related
to diurnal breezes and synoptic variability. In particular, the breezes
force diurnal currents in waters of the continental shelf and slope of the
south-eastern Bay. It is concluded that the breezes may force diurnal
currents over considerably wider areas than that covered by the HF radar,
considering that the northern and southern continental shelves of the Bay
exhibit stronger diurnal than annual wind amplitudes. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|