 |
| Titel |
On the multiple time scales of variability in the Northeast Pacific Ocean |
| VerfasserIn |
R. Tokmakian |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1812-0784
|
| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 5, no. 4 ; Nr. 5, no. 4 (2009-11-17), S.591-605 |
| Datensatznummer |
250002734
|
| Publikation (Nr.) |
 copernicus.org/os-5-591-2009.pdf |
|
|
|
|
|
| Zusammenfassung |
| The spatial and temporal sea surface height energy distribution of
the Northeast Pacific Ocean is described and discussed. Using an
altimetric data set covering 15 years (1993–2007), the energy
within the 3–9 month band is primarily located within 10° of
the coast. In the Gulf of Alaska, this energy signal is on the
shelf, while further south, west of the California/Oregon coast, the
significant energy in this band is west of the shelf break. In both
cases, it is primarily forced by the local wind. Within the 2–3
year band, the signal reflects energy generated by local changes to
the wind stress from large atmospheric shifts indicated by the
Pacific North American Index and by advective or propagating
processes related to El Niño-Southern Oscillation. Over the two
4–6 year periods within this data set, the change is primarily due
to the large scale shift in atmospheric systems north of about
30° N which also affect changes in current strengths. Based
on the distribution of the energy signal and its variability, a set
of three winter-time indices are suggested to characterize the
distinct differences in the SSH anomalies in these areas. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|