Interannual Variation in Phytoplankton Class-specific Primary Production at a Global Scale
Phytoplankton is responsible for over half of the net primary production on earth. The knowledge on the contribution of various phytoplankton groups to the total primary production is still poorly understood. Data from satellite observations suggest that for upwelling regions, photosynthetic rates b...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20140013082 2023-05-15T17:34:00+02:00 Interannual Variation in Phytoplankton Class-specific Primary Production at a Global Scale Gregg, Watson Rousseaux, Cecile Unclassified, Unlimited, Publicly available February 23, 2014 application/pdf http://hdl.handle.net/2060/20140013082 unknown Document ID: 20140013082 http://hdl.handle.net/2060/20140013082 Copyright, Distribution as joint owner in the copyright CASI Oceanography Life Sciences (General) GSFC-E-DAA-TN11391 2014 Ocean Sciences Meeting; 23-28 Feb. 2014; Honolulu, Hawaii; United States 2014 ftnasantrs 2019-07-21T00:23:36Z Phytoplankton is responsible for over half of the net primary production on earth. The knowledge on the contribution of various phytoplankton groups to the total primary production is still poorly understood. Data from satellite observations suggest that for upwelling regions, photosynthetic rates by microplankton is higher than that of nanoplankton but that when the spatial extent is considered, the production by nanoplankton is comparable or even larger than microplankton. Here, we used the NASA Ocean Biogeochemical Model (NOBM) combined with remote sensing data via assimilation to evaluate the contribution of 4 phytoplankton groups to the total primary production. Globally, diatoms were the group that contributed the most to the total phytoplankton production (approx. 50%) followed by coccolithophores and chlorophytes. Primary production by diatoms was highest in high latitude (>45 deg) and in major upwelling systems (Equatorial Pacific and Benguela system). We assessed the effects of climate variability on the class-specific primary production using global (i.e. Multivariate El Nino Index, MEI) and 'regional' climate indices (e.g. Southern Annular Mode (SAM), Pacific Decadal Oscillation (PDO) and North Atlantic Oscillation (NAO)). Most interannual variability occurred in the Equatorial Pacific and was associated with climate variability. These results provide a modeling and data assimilation perspective to phytoplankton partitioning of primary production and contribute to our understanding of the dynamics of the carbon cycle in the oceans at a global scale. Other/Unknown Material North Atlantic North Atlantic oscillation NASA Technical Reports Server (NTRS) Pacific |
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NASA Technical Reports Server (NTRS) |
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ftnasantrs |
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Oceanography Life Sciences (General) |
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Oceanography Life Sciences (General) Gregg, Watson Rousseaux, Cecile Interannual Variation in Phytoplankton Class-specific Primary Production at a Global Scale |
topic_facet |
Oceanography Life Sciences (General) |
description |
Phytoplankton is responsible for over half of the net primary production on earth. The knowledge on the contribution of various phytoplankton groups to the total primary production is still poorly understood. Data from satellite observations suggest that for upwelling regions, photosynthetic rates by microplankton is higher than that of nanoplankton but that when the spatial extent is considered, the production by nanoplankton is comparable or even larger than microplankton. Here, we used the NASA Ocean Biogeochemical Model (NOBM) combined with remote sensing data via assimilation to evaluate the contribution of 4 phytoplankton groups to the total primary production. Globally, diatoms were the group that contributed the most to the total phytoplankton production (approx. 50%) followed by coccolithophores and chlorophytes. Primary production by diatoms was highest in high latitude (>45 deg) and in major upwelling systems (Equatorial Pacific and Benguela system). We assessed the effects of climate variability on the class-specific primary production using global (i.e. Multivariate El Nino Index, MEI) and 'regional' climate indices (e.g. Southern Annular Mode (SAM), Pacific Decadal Oscillation (PDO) and North Atlantic Oscillation (NAO)). Most interannual variability occurred in the Equatorial Pacific and was associated with climate variability. These results provide a modeling and data assimilation perspective to phytoplankton partitioning of primary production and contribute to our understanding of the dynamics of the carbon cycle in the oceans at a global scale. |
format |
Other/Unknown Material |
author |
Gregg, Watson Rousseaux, Cecile |
author_facet |
Gregg, Watson Rousseaux, Cecile |
author_sort |
Gregg, Watson |
title |
Interannual Variation in Phytoplankton Class-specific Primary Production at a Global Scale |
title_short |
Interannual Variation in Phytoplankton Class-specific Primary Production at a Global Scale |
title_full |
Interannual Variation in Phytoplankton Class-specific Primary Production at a Global Scale |
title_fullStr |
Interannual Variation in Phytoplankton Class-specific Primary Production at a Global Scale |
title_full_unstemmed |
Interannual Variation in Phytoplankton Class-specific Primary Production at a Global Scale |
title_sort |
interannual variation in phytoplankton class-specific primary production at a global scale |
publishDate |
2014 |
url |
http://hdl.handle.net/2060/20140013082 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
CASI |
op_relation |
Document ID: 20140013082 http://hdl.handle.net/2060/20140013082 |
op_rights |
Copyright, Distribution as joint owner in the copyright |
_version_ |
1766132675803873280 |