Estimation of Primary Production and Carbon Flux in Antarctic Coastal Waters: A Modeling Study
This study presents results from models that are designed to simulate the underwater light field, to simulate phytoplankton primary production, and to estimate the fate of phytoplankton carbon in continental shelf waters of the west Antarctic Peninsula (WAP) and Ross Sea. Simulation of the underwate...
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ftolddominionuni:oai:digitalcommons.odu.edu:oeas_etds-1051 2023-05-15T13:57:54+02:00 Estimation of Primary Production and Carbon Flux in Antarctic Coastal Waters: A Modeling Study Kim, Hae-Cheol 2004-01-01T08:00:00Z application/pdf https://digitalcommons.odu.edu/oeas_etds/54 https://digitalcommons.odu.edu/cgi/viewcontent.cgi?article=1051&context=oeas_etds unknown ODU Digital Commons https://digitalcommons.odu.edu/oeas_etds/54 https://digitalcommons.odu.edu/cgi/viewcontent.cgi?article=1051&context=oeas_etds In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). OES Theses and Dissertations Antarctic Carbon flux Coastal Primary production Biogeochemistry Environmental Sciences Oceanography text 2004 ftolddominionuni 2023-01-16T18:44:52Z This study presents results from models that are designed to simulate the underwater light field, to simulate phytoplankton primary production, and to estimate the fate of phytoplankton carbon in continental shelf waters of the west Antarctic Peninsula (WAP) and Ross Sea. Simulation of the underwater light field required derivation of new coefficient sets for power function-type cloud cover correction algorithms, which were found to be influenced by multiple reflections between the bottom of clouds and the surface. The coefficient sets indicate that the spectral effect of clouds on the properties of the surface irradiance was spectrally-neutral for wavelengths greater than 330 nm. The regional dependency of the newly-derived coefficient sets provide an approach for developing general cloud cover correction algorithms for Antarctic coastal waters. Next, a bio-optical production model that was forced with the simulated surface irradiance fields, corrected for cloud conditions, and the simulated underwater light field was used to estimate primary production and subsequent carbon flux at several sites along the western Antarctic Peninsula and in the Ross Sea. The parameterizations used in the bio-optical production model included depth-dependent photosynthesis-irradiance relationships that involved different patterns of diel variation. Sensitivity studies showed simulated primary production estimates were increased by up to 130% when photosynthetic parameters with a diel periodicity were used in the production model. Inclusion of spectrally-resolved quantum yields increased primary production estimates by as much as 300%, relative to a reference simulation that used constant parameters. The fate of newly-produced phytoplankton carbon obtained from simulations for the WAP and Ross Sea was investigated using budget calculations that included the effects of grazing, advection, and sinking. For the western Antarctic Peninsula region, horizontal (across-shelf component) advection is the dominant process controlling ... Text Antarc* Antarctic Antarctic Peninsula Ross Sea Old Dominion University: ODU Digital Commons Antarctic Antarctic Peninsula Ross Sea |
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Old Dominion University: ODU Digital Commons |
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ftolddominionuni |
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topic |
Antarctic Carbon flux Coastal Primary production Biogeochemistry Environmental Sciences Oceanography |
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Antarctic Carbon flux Coastal Primary production Biogeochemistry Environmental Sciences Oceanography Kim, Hae-Cheol Estimation of Primary Production and Carbon Flux in Antarctic Coastal Waters: A Modeling Study |
topic_facet |
Antarctic Carbon flux Coastal Primary production Biogeochemistry Environmental Sciences Oceanography |
description |
This study presents results from models that are designed to simulate the underwater light field, to simulate phytoplankton primary production, and to estimate the fate of phytoplankton carbon in continental shelf waters of the west Antarctic Peninsula (WAP) and Ross Sea. Simulation of the underwater light field required derivation of new coefficient sets for power function-type cloud cover correction algorithms, which were found to be influenced by multiple reflections between the bottom of clouds and the surface. The coefficient sets indicate that the spectral effect of clouds on the properties of the surface irradiance was spectrally-neutral for wavelengths greater than 330 nm. The regional dependency of the newly-derived coefficient sets provide an approach for developing general cloud cover correction algorithms for Antarctic coastal waters. Next, a bio-optical production model that was forced with the simulated surface irradiance fields, corrected for cloud conditions, and the simulated underwater light field was used to estimate primary production and subsequent carbon flux at several sites along the western Antarctic Peninsula and in the Ross Sea. The parameterizations used in the bio-optical production model included depth-dependent photosynthesis-irradiance relationships that involved different patterns of diel variation. Sensitivity studies showed simulated primary production estimates were increased by up to 130% when photosynthetic parameters with a diel periodicity were used in the production model. Inclusion of spectrally-resolved quantum yields increased primary production estimates by as much as 300%, relative to a reference simulation that used constant parameters. The fate of newly-produced phytoplankton carbon obtained from simulations for the WAP and Ross Sea was investigated using budget calculations that included the effects of grazing, advection, and sinking. For the western Antarctic Peninsula region, horizontal (across-shelf component) advection is the dominant process controlling ... |
format |
Text |
author |
Kim, Hae-Cheol |
author_facet |
Kim, Hae-Cheol |
author_sort |
Kim, Hae-Cheol |
title |
Estimation of Primary Production and Carbon Flux in Antarctic Coastal Waters: A Modeling Study |
title_short |
Estimation of Primary Production and Carbon Flux in Antarctic Coastal Waters: A Modeling Study |
title_full |
Estimation of Primary Production and Carbon Flux in Antarctic Coastal Waters: A Modeling Study |
title_fullStr |
Estimation of Primary Production and Carbon Flux in Antarctic Coastal Waters: A Modeling Study |
title_full_unstemmed |
Estimation of Primary Production and Carbon Flux in Antarctic Coastal Waters: A Modeling Study |
title_sort |
estimation of primary production and carbon flux in antarctic coastal waters: a modeling study |
publisher |
ODU Digital Commons |
publishDate |
2004 |
url |
https://digitalcommons.odu.edu/oeas_etds/54 https://digitalcommons.odu.edu/cgi/viewcontent.cgi?article=1051&context=oeas_etds |
geographic |
Antarctic Antarctic Peninsula Ross Sea |
geographic_facet |
Antarctic Antarctic Peninsula Ross Sea |
genre |
Antarc* Antarctic Antarctic Peninsula Ross Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Ross Sea |
op_source |
OES Theses and Dissertations |
op_relation |
https://digitalcommons.odu.edu/oeas_etds/54 https://digitalcommons.odu.edu/cgi/viewcontent.cgi?article=1051&context=oeas_etds |
op_rights |
In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). |
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1766265816906465280 |