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Abstract:

Field measurements of surface chlorophyll-a concentration were used to evaluate for the first time the performance of the standard Moderate Resolution Imaging Spectroradiometer (MODIS) and both standard and regional Sea-viewing Wide Field-of-view Sensor (SeaWiFS) ocean colour algorithms in the Patagonian Continental Shelf (PCS) between 38° S and 55° S. The results showed that the regional algorithms did not significantly improve the global algorithm estimates. Moreover, the SeaWiFS OC4v4 algorithm, National Aeronautics and Space Administration (NASA) standard chlorophyll product, showed the best performance among all the algorithms examined. Nonetheless, all the global and local algorithms analysed showed uncertainties dependent on chlorophyll concentration. Low chlorophyll-a concentration values tended to be overestimated and high values tended to be underestimated. A regional analysis within the PCS showed that higher uncertainties are found in the homogeneous side of the tidal fronts present in the PCS, in areas suggested to be optically complex case 2 waters, while a better result (less bias) was obtained in the southern mid-shelf region. We discuss the probable reasons and provide possible explanations of the regional differences in the performance of the algorithms.

Registro:

Documento: Artículo
Título:Evaluation of SeaWiFS and MODIS chlorophyll-a products in the Argentinean Patagonian Continental Shelf (38° S-55° S)
Autor:Dogliotti, A.I.; Schloss, I.R.; Almandoz, G.O.; Gagliardini, D.A.
Filiación:Instituto de Astronomia y Fisica del Espacio (IAFE-CONICET), Pabellon IAFE-Ciudad Universitaria, C.C. 67-sucursal 28 (1428), Buenos Aires, Argentina
Consejo Nacional de Investigaciones Cientificas y Tecnicas, Argentina
Instituto Antartico Argentino, Cerrito 1248 (1010), Ciudad de Buenos Aires, Argentina
Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, La Plata, Argentina
Centro Nacional Patagonico (CENPAT-CONICET), Puerto Madryn, Argentina
Palabras clave:Band structure; Chlorophyll; NASA; Radiometers; Regional planning; Satellite imagery; Chlorophyll concentration; Chlorophyll-a concentration; Continental shelves; Field measurement; Moderate resolution imaging spectroradiometer; Regional differences; Sea-viewing wide field-of-view sensors; Surface chlorophyll; Uncertainty analysis; algorithm; chlorophyll a; estimation method; MODIS; radiometer; Atlantic Ocean; Patagonian Shelf
Año:2008
Volumen:30
Número:1
Página de inicio:251
Página de fin:273
DOI: http://dx.doi.org/10.1080/01431160802311133
Título revista:International Journal of Remote Sensing
Título revista abreviado:Int. J. Remote Sens.
ISSN:01431161
CODEN:IJSED
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01431161_v30_n1_p251_Dogliotti

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Citas:

---------- APA ----------
Dogliotti, A.I., Schloss, I.R., Almandoz, G.O. & Gagliardini, D.A. (2008) . Evaluation of SeaWiFS and MODIS chlorophyll-a products in the Argentinean Patagonian Continental Shelf (38° S-55° S). International Journal of Remote Sensing, 30(1), 251-273.
http://dx.doi.org/10.1080/01431160802311133
---------- CHICAGO ----------
Dogliotti, A.I., Schloss, I.R., Almandoz, G.O., Gagliardini, D.A. "Evaluation of SeaWiFS and MODIS chlorophyll-a products in the Argentinean Patagonian Continental Shelf (38° S-55° S)" . International Journal of Remote Sensing 30, no. 1 (2008) : 251-273.
http://dx.doi.org/10.1080/01431160802311133
---------- MLA ----------
Dogliotti, A.I., Schloss, I.R., Almandoz, G.O., Gagliardini, D.A. "Evaluation of SeaWiFS and MODIS chlorophyll-a products in the Argentinean Patagonian Continental Shelf (38° S-55° S)" . International Journal of Remote Sensing, vol. 30, no. 1, 2008, pp. 251-273.
http://dx.doi.org/10.1080/01431160802311133
---------- VANCOUVER ----------
Dogliotti, A.I., Schloss, I.R., Almandoz, G.O., Gagliardini, D.A. Evaluation of SeaWiFS and MODIS chlorophyll-a products in the Argentinean Patagonian Continental Shelf (38° S-55° S). Int. J. Remote Sens. 2008;30(1):251-273.
http://dx.doi.org/10.1080/01431160802311133