Year-round observations of carbon biomass and flux variability in the Southern Ocean
Three Carbon Explorer (CE) floats profiling to kilometer depths in the Southern Ocean tracked dawn-dusk variations of mixing/stratification, particulate organic carbon (POC), and light scattering and sedimentation at 100, 250, and 800 m continuously from January 2002 to April 2003. Data were analyze...
Published in: | Global Biogeochemical Cycles |
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Online Access: | http://www.osti.gov/servlets/purl/952854 https://www.osti.gov/biblio/952854 https://doi.org/10.1029/2008GB003206 |
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ftosti:oai:osti.gov:952854 2023-07-30T04:07:00+02:00 Year-round observations of carbon biomass and flux variability in the Southern Ocean Bishop, James K.B. Wood, Todd 2009-12-16 application/pdf http://www.osti.gov/servlets/purl/952854 https://www.osti.gov/biblio/952854 https://doi.org/10.1029/2008GB003206 unknown http://www.osti.gov/servlets/purl/952854 https://www.osti.gov/biblio/952854 https://doi.org/10.1029/2008GB003206 doi:10.1029/2008GB003206 54 58 BIOMASS CARBON CHLOROPHYLL EXPORTS LIGHT SCATTERING PARTICULATES PHYTOPLANKTON SATELLITES SEDIMENTATION STRATIFICATION TRANSIENTS ZOOPLANKTON 2009 ftosti https://doi.org/10.1029/2008GB003206 2023-07-11T08:47:07Z Three Carbon Explorer (CE) floats profiling to kilometer depths in the Southern Ocean tracked dawn-dusk variations of mixing/stratification, particulate organic carbon (POC), and light scattering and sedimentation at 100, 250, and 800 m continuously from January 2002 to April 2003. Data were analyzed in conjunction with contemporaneous satellite winds and chlorophyll and derived subsurface light fields. The CE deployed at 66{sup o}S 172{sup o}W operated in the ice edge zone in absence of light. Two CEs deployed at 55{sup o}S 172{sup o}W recorded wintertime mixing to {approx}400 m, yet observed very different bloom dynamics and sedimentation the following spring. Four hypotheses are explored. The strongest is that shallow transient stratification of the deep winter mixed layer to shallower than photosynthetic critical depth occurred more frequently in the non-bloom/higher sedimentation case. The lower particle export to 800 m under the bloom was hypothesized to be due to higher interception of sinking carbon by a relatively starved over wintering zooplankton population. In the Southern Ocean surface phytoplankton biomass may counter indicate particle flux at kilometer depths. Other/Unknown Material Southern Ocean SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Southern Ocean Global Biogeochemical Cycles 23 2 n/a n/a |
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Open Polar |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
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language |
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topic |
54 58 BIOMASS CARBON CHLOROPHYLL EXPORTS LIGHT SCATTERING PARTICULATES PHYTOPLANKTON SATELLITES SEDIMENTATION STRATIFICATION TRANSIENTS ZOOPLANKTON |
spellingShingle |
54 58 BIOMASS CARBON CHLOROPHYLL EXPORTS LIGHT SCATTERING PARTICULATES PHYTOPLANKTON SATELLITES SEDIMENTATION STRATIFICATION TRANSIENTS ZOOPLANKTON Bishop, James K.B. Wood, Todd Year-round observations of carbon biomass and flux variability in the Southern Ocean |
topic_facet |
54 58 BIOMASS CARBON CHLOROPHYLL EXPORTS LIGHT SCATTERING PARTICULATES PHYTOPLANKTON SATELLITES SEDIMENTATION STRATIFICATION TRANSIENTS ZOOPLANKTON |
description |
Three Carbon Explorer (CE) floats profiling to kilometer depths in the Southern Ocean tracked dawn-dusk variations of mixing/stratification, particulate organic carbon (POC), and light scattering and sedimentation at 100, 250, and 800 m continuously from January 2002 to April 2003. Data were analyzed in conjunction with contemporaneous satellite winds and chlorophyll and derived subsurface light fields. The CE deployed at 66{sup o}S 172{sup o}W operated in the ice edge zone in absence of light. Two CEs deployed at 55{sup o}S 172{sup o}W recorded wintertime mixing to {approx}400 m, yet observed very different bloom dynamics and sedimentation the following spring. Four hypotheses are explored. The strongest is that shallow transient stratification of the deep winter mixed layer to shallower than photosynthetic critical depth occurred more frequently in the non-bloom/higher sedimentation case. The lower particle export to 800 m under the bloom was hypothesized to be due to higher interception of sinking carbon by a relatively starved over wintering zooplankton population. In the Southern Ocean surface phytoplankton biomass may counter indicate particle flux at kilometer depths. |
author |
Bishop, James K.B. Wood, Todd |
author_facet |
Bishop, James K.B. Wood, Todd |
author_sort |
Bishop, James K.B. |
title |
Year-round observations of carbon biomass and flux variability in the Southern Ocean |
title_short |
Year-round observations of carbon biomass and flux variability in the Southern Ocean |
title_full |
Year-round observations of carbon biomass and flux variability in the Southern Ocean |
title_fullStr |
Year-round observations of carbon biomass and flux variability in the Southern Ocean |
title_full_unstemmed |
Year-round observations of carbon biomass and flux variability in the Southern Ocean |
title_sort |
year-round observations of carbon biomass and flux variability in the southern ocean |
publishDate |
2009 |
url |
http://www.osti.gov/servlets/purl/952854 https://www.osti.gov/biblio/952854 https://doi.org/10.1029/2008GB003206 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
http://www.osti.gov/servlets/purl/952854 https://www.osti.gov/biblio/952854 https://doi.org/10.1029/2008GB003206 doi:10.1029/2008GB003206 |
op_doi |
https://doi.org/10.1029/2008GB003206 |
container_title |
Global Biogeochemical Cycles |
container_volume |
23 |
container_issue |
2 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1772820052376027136 |