Williams, GN; Dogliotti, AI; Zaidman, P; Solis, M; Narvarte, MA; Gonzalez, RC; Esteves, JL; Gagliardini, DA (2013). Assessment of remotely-sensed sea-surface temperature and chlorophyll-a concentration in San Matias Gulf (Patagonia, Argentina). CONTINENTAL SHELF RESEARCH, 52, 159-171.
Field measurements of surface temperature and chlorophyll-a concentration were used to evaluate for the first time the performance of the standard sea surface temperature and chlorophyll-a algorithms of the Moderate Resolution Imaging Spectroradiometer (MODIS) in San Matias Gulf, northern of the Argentine Patagonian Continental Shelf (between 40 degrees 47'S and 42 degrees 13'S). The fit of the temperature data to a Standard Major Axis (SMA) type II regression model indicated that a high proportion of the total variance (r(2) >= 0.80) was explained by the model. For chlorophyll-a, the low correlation (r(2)=0.15) and high dispersion indicated a poor performance and a general overestimation of Chl-a by the OC3Mv5 algorithm as indicated by the Relative Percent Difference (RPD=113%). However, for stations located in the northern area of the gulf the result showed a higher correlation (r(2)=0.76) and less dispersion (RPD=31%). The feasible reasons and explanations for the performance of NLSST and OC3Mv5 algorithms are discussed. The results of the temporal variability analysis of SST and Chl-a in different areas of the gulf agreed with previous studies. (c) 2012 Elsevier Ltd. All rights reserved.