INVESTIGADORES
SARACENO Martin
congresos y reuniones científicas
Título:
TEMPORAL AND SPATIAL ANALYSIS IN THE SOUTHWESTERN ATLANTIC
Autor/es:
RUIZ ETCHEVERRY, L.R.; SARACENO, M.
Lugar:
Buenos Aires
Reunión:
Conferencia; SCAR Open Science Conference; 2010
Institución organizadora:
Scientific Committee on Antarctic Research
Resumen:
We characterize the length scales of the spatio/temporal variability of the surface
currents in the Southwestern Atlantic (SWA) using (i) gridded Sea Surface Heights
(SSH) with a 1/3 of degree spatial resolution ii) 4-km resolution satellite derived sea
surface temperature (SST) , and (iii) a 6 month time-series of in-situ current data
collected at 57,003 ºW 41,987 ºS. Quantifying the dominant spatial scales of patterns
in high resolution SST will assist interpretation of the in-situ moored data and of low
resolution satellite data. Comparison between geostrophic velocities computed from
satellite altimetry and the current meter data suggests that at this location only time
scales longer than 35 days can be estimated from altimetry data. Robust statistics of
two-dimensional SST autocorrelation shows an organized pattern with high values over
the Malvinas Current and relatively low values in the recirculation region of the Brazil
Current, indicating low and a high degree of spatial variability, respectively. The SST
analysis also shows a region of high standard deviation values in the region where the
current meter was moored, which suggests an enhanced exchange of waters across
the shelf-break.