 |
| Titel |
Multi-year satellite observations of instability waves in the Tropical Atlantic Ocean |
| VerfasserIn |
A. C. V. Caltabiano, I. S. Robinson, L. P. Pezzi |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1812-0784
|
| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 1, no. 2 ; Nr. 1, no. 2 (2005-10-21), S.97-112 |
| Datensatznummer |
250000157
|
| Publikation (Nr.) |
 copernicus.org/os-1-97-2005.pdf |
|
|
|
|
|
| Zusammenfassung |
| Instability waves in the tropical Atlantic Ocean are analysed by
microwave satellite-based data spanning from 1998 to 2001. This is
the first multi-year observational study of the sea surface
temperature (SST) signature of the Tropical Instability Waves
(TIW) in the region. SST data were used to show that the waves
spectral characteristics vary from year-to-year. They also vary on
each latitude north of the equator, with the region of
1° N, 15° W concentrating the largest
variability when the time series is averaged along the years.
Analyses of wind components show that meridional winds are more
affected near the equator and 1° N, while zonal winds
are more affected further north at around 3° N and
4° N. Concurrent observations of SST, wind,
atmospheric water vapour, liquid cloud water, precipitation rates
and wind were used to suggest the possible influence of these
waves on the Intertropical Convergence Zone (ITCZ). It seems that
these instabilities have a large impact on the ITCZ due to its
proximity of the equator, compared to its Pacific counterpart, and
the geography of the tropical Atlantic basin. These analyses also
suggest that the air-sea coupling mechanism suggested by
Wallace can also be applied to the tropical Atlantic
region. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|