Assessment of remotely-sensed sea-surface temperature and chlorophyll-a concentration in San Matias Gulf (Patagonia, Argentina).

WILLIAMS, GABRIELA; DOGLIOTTI, ANA; ZAIDMAN, PAULA; SOLÍS, MIRIAM; NARVARTE, MAITE; GONZÁLEZ, RAÚL; ESTEVES, JOSÉ LUIS; GAGLIARDINI, DOMINGO ANTONIO

CONTINENTAL SHELF RESEARCH

PERGAMON-ELSEVIER SCIENCE LTD

Lugar: Amsterdam; Año: 2013 p. 159 - 171

0278-4343

Field measurements of surface temperature and chlorophyll-a concentration were used to evaluate for the first time the performance of the standard Moderate Resolution Imaging Spectroradiometer (MODIS) in San Matías Gulf , northern of the Patagonian Continental Shelf between 40º 47´ S and 42º 13´ S. The fit of the temperature data to a SMA type II regression model indicated that a high proportion of the total variance (r2≥0.80, RPD=6.22%) was explained by this model. For chlorophyll-a, low correlation and high dispersion (r2=0.15, RPD=112.88%) indicated a poor performance and a general overestimation of Chl-a by OC3v5 algorithm. However, for stations located in the northern area of the Gulf the result showed a higher correlation (r2=0.76) and less dispersion(RPD=30.55%). The probable reasons and possible explanations for the performance of NLSST and OC3v5 algorithm are discussed. Also, the results of the temporal variability analysis of SST and Chl-a in different areas of the Gulf agreed with previous studies.