An evaluation of ocean color model estimates of marine primary productivity in coastal and pelagic regions across the globe
Nearly half of the earth's photosynthetically fixed carbon derives from the oceans. To determine global and region specific rates, we rely on models that estimate marine net primary productivity (NPP) thus it is essential that these models are evaluated to determine their accuracy. Here we asse...
Published in: | Biogeosciences |
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Language: | English |
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Copernicus Publications
2011
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Online Access: | http://hdl.handle.net/2237/25254 https://doi.org/10.5194/bg-8-489-2011 https://nagoya.repo.nii.ac.jp/record/23065/files/bg-8-489-2011.pdf |
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ftnagoyauniv:oai:nagoya.repo.nii.ac.jp:00023065 2023-05-15T14:02:41+02:00 An evaluation of ocean color model estimates of marine primary productivity in coastal and pelagic regions across the globe Saba, V. S. 68235 Friedrichs, M. A. M. 68236 Antoine, D. 68237 Armstrong, R. A. 68238 Asanuma, I. 68239 Behrenfeld, M. J. 68240 Ciotti, A. M. 68241 Dowell, M. 68242 Hoepffner, N. 68243 Hyde, K. J. W. 68244 Ishizaka, J. 68245 Kameda, T. 68246 Marra, J. 68247 Mélin, F. 68248 Morel, A. 68249 O’Reilly, J. 68250 Scardi, M. 68251 Smith, Jr. W. O. 68252 Smyth, J. 68253 Tang, S. 68254 Uitz, J. 68255 Waters, K. 68256 Westberry, T. K. 68257 2011-02-22 application/pdf http://hdl.handle.net/2237/25254 https://doi.org/10.5194/bg-8-489-2011 https://nagoya.repo.nii.ac.jp/record/23065/files/bg-8-489-2011.pdf eng eng Copernicus Publications https://doi.org/10.5194/bg-8-489-2011 Biogeosciences 8 489 503 http://doi.org/10.5194/bg-8-489-2011 http://hdl.handle.net/2237/25254 1726-4170 https://nagoya.repo.nii.ac.jp/record/23065/files/bg-8-489-2011.pdf © Author(s) 2011. This work is distributed under the Creative Commons Attribution 3.0 License. CC-BY 2011 ftnagoyauniv https://doi.org/10.5194/bg-8-489-2011 2023-02-20T14:44:12Z Nearly half of the earth's photosynthetically fixed carbon derives from the oceans. To determine global and region specific rates, we rely on models that estimate marine net primary productivity (NPP) thus it is essential that these models are evaluated to determine their accuracy. Here we assessed the skill of 21 ocean color models by comparing their estimates of depth-integrated NPP to 1156 in situ 14C measurements encompassing ten marine regions including the Sargasso Sea, pelagic North Atlantic, coastal Northeast Atlantic, Black Sea, Mediterranean Sea, Arabian Sea, subtropical North Pacific, Ross Sea, West Antarctic Peninsula, and the Antarctic Polar Frontal Zone. Average model skill, as determined by root-mean square difference calculations, was lowest in the Black and Mediterranean Seas, highest in the pelagic North Atlantic and the Antarctic Polar Frontal Zone, and intermediate in the other six regions. The maximum fraction of model skill that may be attributable to uncertainties in both the input variables and in situ NPP measurements was nearly 72%. On average, the simplest depth/wavelength integrated models performed no worse than the more complex depth/wavelength resolved models. Ocean color models were not highly challenged in extreme conditions of surface chlorophyll-a and sea surface temperature, nor in high-nitrate low-chlorophyll waters. Water column depth was the primary influence on ocean color model performance such that average skill was significantly higher at depths greater than 250 m, suggesting that ocean color models are more challenged in Case-2 waters (coastal) than in Case-1 (pelagic) waters. Given that in situ chlorophyll-a data was used as input data, algorithm improvement is required to eliminate the poor performance of ocean color NPP models in Case-2 waters that are close to coastlines. Finally, ocean color chlorophyll-a algorithms are challenged by optically complex Case-2 waters, thus using satellite-derived chlorophyll-a to estimate NPP in coastal areas would likely further ... Other/Unknown Material Antarc* Antarctic Antarctic Peninsula North Atlantic Northeast Atlantic Ross Sea Nagoya University: NAGOYA Repository Antarctic The Antarctic Antarctic Peninsula Ross Sea Pacific Biogeosciences 8 2 489 503 |
institution |
Open Polar |
collection |
Nagoya University: NAGOYA Repository |
op_collection_id |
ftnagoyauniv |
language |
English |
description |
Nearly half of the earth's photosynthetically fixed carbon derives from the oceans. To determine global and region specific rates, we rely on models that estimate marine net primary productivity (NPP) thus it is essential that these models are evaluated to determine their accuracy. Here we assessed the skill of 21 ocean color models by comparing their estimates of depth-integrated NPP to 1156 in situ 14C measurements encompassing ten marine regions including the Sargasso Sea, pelagic North Atlantic, coastal Northeast Atlantic, Black Sea, Mediterranean Sea, Arabian Sea, subtropical North Pacific, Ross Sea, West Antarctic Peninsula, and the Antarctic Polar Frontal Zone. Average model skill, as determined by root-mean square difference calculations, was lowest in the Black and Mediterranean Seas, highest in the pelagic North Atlantic and the Antarctic Polar Frontal Zone, and intermediate in the other six regions. The maximum fraction of model skill that may be attributable to uncertainties in both the input variables and in situ NPP measurements was nearly 72%. On average, the simplest depth/wavelength integrated models performed no worse than the more complex depth/wavelength resolved models. Ocean color models were not highly challenged in extreme conditions of surface chlorophyll-a and sea surface temperature, nor in high-nitrate low-chlorophyll waters. Water column depth was the primary influence on ocean color model performance such that average skill was significantly higher at depths greater than 250 m, suggesting that ocean color models are more challenged in Case-2 waters (coastal) than in Case-1 (pelagic) waters. Given that in situ chlorophyll-a data was used as input data, algorithm improvement is required to eliminate the poor performance of ocean color NPP models in Case-2 waters that are close to coastlines. Finally, ocean color chlorophyll-a algorithms are challenged by optically complex Case-2 waters, thus using satellite-derived chlorophyll-a to estimate NPP in coastal areas would likely further ... |
author |
Saba, V. S. 68235 Friedrichs, M. A. M. 68236 Antoine, D. 68237 Armstrong, R. A. 68238 Asanuma, I. 68239 Behrenfeld, M. J. 68240 Ciotti, A. M. 68241 Dowell, M. 68242 Hoepffner, N. 68243 Hyde, K. J. W. 68244 Ishizaka, J. 68245 Kameda, T. 68246 Marra, J. 68247 Mélin, F. 68248 Morel, A. 68249 O’Reilly, J. 68250 Scardi, M. 68251 Smith, Jr. W. O. 68252 Smyth, J. 68253 Tang, S. 68254 Uitz, J. 68255 Waters, K. 68256 Westberry, T. K. 68257 |
spellingShingle |
Saba, V. S. 68235 Friedrichs, M. A. M. 68236 Antoine, D. 68237 Armstrong, R. A. 68238 Asanuma, I. 68239 Behrenfeld, M. J. 68240 Ciotti, A. M. 68241 Dowell, M. 68242 Hoepffner, N. 68243 Hyde, K. J. W. 68244 Ishizaka, J. 68245 Kameda, T. 68246 Marra, J. 68247 Mélin, F. 68248 Morel, A. 68249 O’Reilly, J. 68250 Scardi, M. 68251 Smith, Jr. W. O. 68252 Smyth, J. 68253 Tang, S. 68254 Uitz, J. 68255 Waters, K. 68256 Westberry, T. K. 68257 An evaluation of ocean color model estimates of marine primary productivity in coastal and pelagic regions across the globe |
author_facet |
Saba, V. S. 68235 Friedrichs, M. A. M. 68236 Antoine, D. 68237 Armstrong, R. A. 68238 Asanuma, I. 68239 Behrenfeld, M. J. 68240 Ciotti, A. M. 68241 Dowell, M. 68242 Hoepffner, N. 68243 Hyde, K. J. W. 68244 Ishizaka, J. 68245 Kameda, T. 68246 Marra, J. 68247 Mélin, F. 68248 Morel, A. 68249 O’Reilly, J. 68250 Scardi, M. 68251 Smith, Jr. W. O. 68252 Smyth, J. 68253 Tang, S. 68254 Uitz, J. 68255 Waters, K. 68256 Westberry, T. K. 68257 |
author_sort |
Saba, V. S. |
title |
An evaluation of ocean color model estimates of marine primary productivity in coastal and pelagic regions across the globe |
title_short |
An evaluation of ocean color model estimates of marine primary productivity in coastal and pelagic regions across the globe |
title_full |
An evaluation of ocean color model estimates of marine primary productivity in coastal and pelagic regions across the globe |
title_fullStr |
An evaluation of ocean color model estimates of marine primary productivity in coastal and pelagic regions across the globe |
title_full_unstemmed |
An evaluation of ocean color model estimates of marine primary productivity in coastal and pelagic regions across the globe |
title_sort |
evaluation of ocean color model estimates of marine primary productivity in coastal and pelagic regions across the globe |
publisher |
Copernicus Publications |
publishDate |
2011 |
url |
http://hdl.handle.net/2237/25254 https://doi.org/10.5194/bg-8-489-2011 https://nagoya.repo.nii.ac.jp/record/23065/files/bg-8-489-2011.pdf |
geographic |
Antarctic The Antarctic Antarctic Peninsula Ross Sea Pacific |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Ross Sea Pacific |
genre |
Antarc* Antarctic Antarctic Peninsula North Atlantic Northeast Atlantic Ross Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula North Atlantic Northeast Atlantic Ross Sea |
op_relation |
https://doi.org/10.5194/bg-8-489-2011 Biogeosciences 8 489 503 http://doi.org/10.5194/bg-8-489-2011 http://hdl.handle.net/2237/25254 1726-4170 https://nagoya.repo.nii.ac.jp/record/23065/files/bg-8-489-2011.pdf |
op_rights |
© Author(s) 2011. This work is distributed under the Creative Commons Attribution 3.0 License. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/bg-8-489-2011 |
container_title |
Biogeosciences |
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8 |
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2 |
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489 |
op_container_end_page |
503 |
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1766273039314452480 |