Evaluation of SeaWiFS and MODIS chlorophyll-a products in the Argentinean Patagonian Continental Shelf (38° S-55° S)

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 Patag...

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Autores principales: Dogliotti, A.I., Schloss, I.R., Almandoz, G.O., Gagliardini, D.A.
Formato: JOUR
Materias:
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
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_01431161_v30_n1_p251_Dogliotti
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_01431161_v30_n1_p251_Dogliotti2023-10-03T14:59:15Z Evaluation of SeaWiFS and MODIS chlorophyll-a products in the Argentinean Patagonian Continental Shelf (38° S-55° S) Dogliotti, A.I. Schloss, I.R. Almandoz, G.O. Gagliardini, D.A. 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 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01431161_v30_n1_p251_Dogliotti
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic 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
spellingShingle 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
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)
topic_facet 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
description 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.
format JOUR
author Dogliotti, A.I.
Schloss, I.R.
Almandoz, G.O.
Gagliardini, D.A.
author_facet Dogliotti, A.I.
Schloss, I.R.
Almandoz, G.O.
Gagliardini, D.A.
author_sort Dogliotti, A.I.
title Evaluation of SeaWiFS and MODIS chlorophyll-a products in the Argentinean Patagonian Continental Shelf (38° S-55° S)
title_short Evaluation of SeaWiFS and MODIS chlorophyll-a products in the Argentinean Patagonian Continental Shelf (38° S-55° S)
title_full Evaluation of SeaWiFS and MODIS chlorophyll-a products in the Argentinean Patagonian Continental Shelf (38° S-55° S)
title_fullStr Evaluation of SeaWiFS and MODIS chlorophyll-a products in the Argentinean Patagonian Continental Shelf (38° S-55° S)
title_full_unstemmed Evaluation of SeaWiFS and MODIS chlorophyll-a products in the Argentinean Patagonian Continental Shelf (38° S-55° S)
title_sort evaluation of seawifs and modis chlorophyll-a products in the argentinean patagonian continental shelf (38° s-55° s)
url http://hdl.handle.net/20.500.12110/paper_01431161_v30_n1_p251_Dogliotti
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AT almandozgo evaluationofseawifsandmodischlorophyllaproductsintheargentineanpatagoniancontinentalshelf38s55s
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