Temporal and spatial variability of phytoplankton pigment concentrations in the Indian Ocean, derived from the CZCS time series images

Temporal and spatial variability of phytoplankton pigment concentrations in the Indian Ocean, derived from the CZCS time series images

A total of 93 monthly global composite remotely sensed ocean color images from the Coastal Zone Color Scanner (CZCS) on board the Nimbus-7 satellite were extracted for the Indian Ocean region (35ºN–55ºS; 30–120ºE) to examine the seasonal variations in phytoplankton pigment concentrations, resulting...

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Autor principal: Alauddin Talukder, ABM
Formato: Online
Lenguaje:eng
Publicado: Iniversidad Autónoma de Baja California 2005
Acceso en línea:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/49
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id oai:cienciasmarinas.com.mx:article-49
record_format ojs
institution Ciencias Marinas
collection OJS
language eng
format Online
author Alauddin Talukder, ABM
spellingShingle Alauddin Talukder, ABM
Temporal and spatial variability of phytoplankton pigment concentrations in the Indian Ocean, derived from the CZCS time series images
author_facet Alauddin Talukder, ABM
author_sort Alauddin Talukder, ABM
title Temporal and spatial variability of phytoplankton pigment concentrations in the Indian Ocean, derived from the CZCS time series images
title_short Temporal and spatial variability of phytoplankton pigment concentrations in the Indian Ocean, derived from the CZCS time series images
title_full Temporal and spatial variability of phytoplankton pigment concentrations in the Indian Ocean, derived from the CZCS time series images
title_fullStr Temporal and spatial variability of phytoplankton pigment concentrations in the Indian Ocean, derived from the CZCS time series images
title_full_unstemmed Temporal and spatial variability of phytoplankton pigment concentrations in the Indian Ocean, derived from the CZCS time series images
title_sort temporal and spatial variability of phytoplankton pigment concentrations in the indian ocean, derived from the czcs time series images
description A total of 93 monthly global composite remotely sensed ocean color images from the Coastal Zone Color Scanner (CZCS) on board the Nimbus-7 satellite were extracted for the Indian Ocean region (35ºN–55ºS; 30–120ºE) to examine the seasonal variations in phytoplankton pigment concentrations, resulting from large-scale changes in physical oceanographic processes. The CZCS data sets were analyzed with the PC-SEAPAK software, and revealed large phytoplankton blooms in the northwest Arabian Sea and off the Somali coast. The blooms were triggered by wind-driven upwelling during the southwest monsoonal months of August and September. In the northern Arabian Sea, phytoplankton blooms, detected from January to March, appeared to be associated with nutrient enhancement resulting from winter convective mixing. In the Bay of Bengal, higher pigment concentrations were confined to the coastal regions but varied only marginally between seasons both in the coastal and offshore regions. Phytoplankton pigment concentrations were consistently low in the open Indian Ocean. Analysis of pigment concentrations extracted from the monthly-accumulated images revealed that the Arabian Sea sustained a greater biomass of phytoplankton compared with any other region of the Indian Ocean. Overall, the coastal regions of the Indian Ocean are richer in phytoplankton pigment than the open Indian Ocean. The number of images in individual areas was highly variable throughout the region due to varying cloud cover.
publisher Iniversidad Autónoma de Baja California
publishDate 2005
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/49
_version_ 1715723928351014912
spelling oai:cienciasmarinas.com.mx:article-492019-04-11T00:41:13Z Temporal and spatial variability of phytoplankton pigment concentrations in the Indian Ocean, derived from the CZCS time series images Variabilidad temporal y espacial de las concentraciones de pigmentos fitoplanctónicos en el Océano Índico, a partir de imágenes CZCS Alauddin Talukder, ABM phytoplankton pigment concentration monsoon Idian Ocean Coastal Zone Color Scanner concentración de pigmentos fitoplanctónicos monzón Océano Índico sensor CZCS A total of 93 monthly global composite remotely sensed ocean color images from the Coastal Zone Color Scanner (CZCS) on board the Nimbus-7 satellite were extracted for the Indian Ocean region (35ºN–55ºS; 30–120ºE) to examine the seasonal variations in phytoplankton pigment concentrations, resulting from large-scale changes in physical oceanographic processes. The CZCS data sets were analyzed with the PC-SEAPAK software, and revealed large phytoplankton blooms in the northwest Arabian Sea and off the Somali coast. The blooms were triggered by wind-driven upwelling during the southwest monsoonal months of August and September. In the northern Arabian Sea, phytoplankton blooms, detected from January to March, appeared to be associated with nutrient enhancement resulting from winter convective mixing. In the Bay of Bengal, higher pigment concentrations were confined to the coastal regions but varied only marginally between seasons both in the coastal and offshore regions. Phytoplankton pigment concentrations were consistently low in the open Indian Ocean. Analysis of pigment concentrations extracted from the monthly-accumulated images revealed that the Arabian Sea sustained a greater biomass of phytoplankton compared with any other region of the Indian Ocean. Overall, the coastal regions of the Indian Ocean are richer in phytoplankton pigment than the open Indian Ocean. The number of images in individual areas was highly variable throughout the region due to varying cloud cover. Se obtuvieron 93 imágenes mensuales compuetas del sensor remoto de color del mar Coastal Zone Color Scanner (CZCS), a bordo del satélite Nimbus-7, para la región del Océano ÿndico (35ºN–55ºS; 30–120ºE), con el fin de determinar las variaciones estacionales de las concentraciones de pigmentos fitoplanctónicos producid as por cambios a gran escala en los procesos oceanográficos físicos. Los datos del CZCS fueron analizados usando la paquetería PC-SEAPAK y mostraron florecimientos extensos de fitoplancton en el noroeste del Mar Arábigo y frente a la costa de Somalia. Los florecimientos resultaron de surgencias inducidas por el viento durante los meses del monzón del suroeste de agosto y septiembre. En el norte del Mar Arábigo, los florecimientos fitoplanctónicos, detectados entre enero y marzo, parecen estar asociados con el enriquecimiento de nutrientes debido a la mezcla convectiva invernal. En la Bahía de Bengala, las mayores concentraciones de pigmentos se limitaron a las regiones costeras, variando sólo marginalmente entre estaciones del año tanto en las áreas costeras como mar adentro. Las concentraciones de pigmentos fitoplanctónicos fueron consistentemente bajas en el Océano Indico abierto. El análisis de las concentraciones de pigmentos obtenidas de las imágenes acumuladas mensualmente mostró que el Mar Arábigo sostiene una biomasa mayor de fitoplancton en comparación con otras regiones del Océano ÿndico. En general, las regiones costeras del Océano Indico son más ricas en pigmentos fitoplanctónicos que las oceánicas. El número de imágenes de áreas específicas fue altamente variable en toda la región debido a la cambiante nubosidad. Iniversidad Autónoma de Baja California 2005-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/49 10.7773/cm.v31i3.49 Ciencias Marinas; Vol. 31 No. 3 (2005); 505-515 Ciencias Marinas; Vol. 31 Núm. 3 (2005); 505-515 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/49/31

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