SPATIAL AND TEMPORAL ANALYSIS OF SEAWIFS CHLOROPHYLL IN THE SOUTH TROPICAL PACIFIC OCEAN

The South West Tropical Pacific (SWTP) is generally considered as an N-limiting oligotrophic area with parts characterized by permanent deep thermocline and nutricline as the Melanesian Archipelago. However, ocean color imagery shows in this region a strong seasonal chlorophyll cycle, with large blo...

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Autores principales:	Dupouy,C, Neveux,J, Le Bouteiller,A
Lenguaje:	English
Publicado:	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción 2004
Materias:	SeaWiFS Trichodesmium South Western Tropical Pacific Ocean Solomon New Caledonia Vanuatu and Fiji-Tonga archipelagos Statistical EOF analysis Oceanic nitrogen fixation
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382004000200030
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spelling	oai:scielo:S0717-653820040002000302005-05-16SPATIAL AND TEMPORAL ANALYSIS OF SEAWIFS CHLOROPHYLL IN THE SOUTH TROPICAL PACIFIC OCEANDupouy,CNeveux,JLe Bouteiller,A SeaWiFS Trichodesmium South Western Tropical Pacific Ocean Solomon New Caledonia Vanuatu and Fiji-Tonga archipelagos Statistical EOF analysis Oceanic nitrogen fixation The South West Tropical Pacific (SWTP) is generally considered as an N-limiting oligotrophic area with parts characterized by permanent deep thermocline and nutricline as the Melanesian Archipelago. However, ocean color imagery shows in this region a strong seasonal chlorophyll cycle, with large blooms which have for long been attributed to nitrogen-fixing cyanobacteria as Trichodesmium. SeaWiFS surface chlorophyll analysis of the area between 5°S-25°S, 150°E-170°W has been conducted from 1997 to 2004. A strong seasonal and interannual variability is described, which relates well with the sea-truth measured chlorophyll concentrations. An empirical orthogonal function analysis helped in determining principal explicative factors of this variability, and in identifying different patterns, i.e., seasonality (austral winter and summer blooms), which may be driven by different fertilization processes, and a unexplained interannual variability. This work represents part of the French PROOF-IRD DIAPAZON (DIAzotrophy in a PAcific ZONe) program aiming at estimating nitrogen and carbon fixation by cyanobacteria at the SWTP scaleinfo:eu-repo/semantics/openAccessFacultad de Ciencias Naturales y Oceanográficas, Universidad de ConcepciónGayana (Concepción) v.68 n.2 suppl.TIProc 20042004-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382004000200030en10.4067/S0717-65382004000200030
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	SeaWiFS Trichodesmium South Western Tropical Pacific Ocean Solomon New Caledonia Vanuatu and Fiji-Tonga archipelagos Statistical EOF analysis Oceanic nitrogen fixation
spellingShingle	SeaWiFS Trichodesmium South Western Tropical Pacific Ocean Solomon New Caledonia Vanuatu and Fiji-Tonga archipelagos Statistical EOF analysis Oceanic nitrogen fixation Dupouy,C Neveux,J Le Bouteiller,A SPATIAL AND TEMPORAL ANALYSIS OF SEAWIFS CHLOROPHYLL IN THE SOUTH TROPICAL PACIFIC OCEAN
description	The South West Tropical Pacific (SWTP) is generally considered as an N-limiting oligotrophic area with parts characterized by permanent deep thermocline and nutricline as the Melanesian Archipelago. However, ocean color imagery shows in this region a strong seasonal chlorophyll cycle, with large blooms which have for long been attributed to nitrogen-fixing cyanobacteria as Trichodesmium. SeaWiFS surface chlorophyll analysis of the area between 5°S-25°S, 150°E-170°W has been conducted from 1997 to 2004. A strong seasonal and interannual variability is described, which relates well with the sea-truth measured chlorophyll concentrations. An empirical orthogonal function analysis helped in determining principal explicative factors of this variability, and in identifying different patterns, i.e., seasonality (austral winter and summer blooms), which may be driven by different fertilization processes, and a unexplained interannual variability. This work represents part of the French PROOF-IRD DIAPAZON (DIAzotrophy in a PAcific ZONe) program aiming at estimating nitrogen and carbon fixation by cyanobacteria at the SWTP scale
author	Dupouy,C Neveux,J Le Bouteiller,A
author_facet	Dupouy,C Neveux,J Le Bouteiller,A
author_sort	Dupouy,C
title	SPATIAL AND TEMPORAL ANALYSIS OF SEAWIFS CHLOROPHYLL IN THE SOUTH TROPICAL PACIFIC OCEAN
title_short	SPATIAL AND TEMPORAL ANALYSIS OF SEAWIFS CHLOROPHYLL IN THE SOUTH TROPICAL PACIFIC OCEAN
title_full	SPATIAL AND TEMPORAL ANALYSIS OF SEAWIFS CHLOROPHYLL IN THE SOUTH TROPICAL PACIFIC OCEAN
title_fullStr	SPATIAL AND TEMPORAL ANALYSIS OF SEAWIFS CHLOROPHYLL IN THE SOUTH TROPICAL PACIFIC OCEAN
title_full_unstemmed	SPATIAL AND TEMPORAL ANALYSIS OF SEAWIFS CHLOROPHYLL IN THE SOUTH TROPICAL PACIFIC OCEAN
title_sort	spatial and temporal analysis of seawifs chlorophyll in the south tropical pacific ocean
publisher	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
publishDate	2004
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382004000200030
work_keys_str_mv	AT dupouyc spatialandtemporalanalysisofseawifschlorophyllinthesouthtropicalpacificocean AT neveuxj spatialandtemporalanalysisofseawifschlorophyllinthesouthtropicalpacificocean AT lebouteillera spatialandtemporalanalysisofseawifschlorophyllinthesouthtropicalpacificocean
_version_	1718442064959504384

SPATIAL AND TEMPORAL ANALYSIS OF SEAWIFS CHLOROPHYLL IN THE SOUTH TROPICAL PACIFIC OCEAN

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