Physical oceanography during Nathaniel B. Palmer cruises NBP06-01 and NBP06-08 to the Ross Sea, supplement to: Long, Matthew C; Dunbar, Robert B; Tortell, Philippe Daniel; Smith, Walker O Jr; Mucciarone, David A; DiTullio, Giacomo R (2011): Vertical structure, seasonal drawdown, and net community production in the Ross Sea, Antarctica. Journal of Geophysical Research, 116(C10), C10029
We calculate net community production (NCP) during summer 2005-2006 and spring 2006 in the Ross Sea using multiple approaches to determine the magnitude and consistency of rates. Water column carbon and nutrient inventories and surface ocean O2/Ar data are compared to satellite-derived primary produ...
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ftdatacite:10.1594/pangaea.818033 2023-05-15T13:56:06+02:00 Physical oceanography during Nathaniel B. Palmer cruises NBP06-01 and NBP06-08 to the Ross Sea, supplement to: Long, Matthew C; Dunbar, Robert B; Tortell, Philippe Daniel; Smith, Walker O Jr; Mucciarone, David A; DiTullio, Giacomo R (2011): Vertical structure, seasonal drawdown, and net community production in the Ross Sea, Antarctica. Journal of Geophysical Research, 116(C10), C10029 Long, Matthew C Dunbar, Robert B Tortell, Philippe Daniel Smith, Walker O Jr Mucciarone, David A DiTullio, Giacomo R 2011 application/zip https://dx.doi.org/10.1594/pangaea.818033 https://doi.pangaea.de/10.1594/PANGAEA.818033 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1029/2009jc005954 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY International Polar Year 2007-2008 IPY Collection article Supplementary Collection of Datasets 2011 ftdatacite https://doi.org/10.1594/pangaea.818033 https://doi.org/10.1029/2009jc005954 2021-11-05T12:55:41Z We calculate net community production (NCP) during summer 2005-2006 and spring 2006 in the Ross Sea using multiple approaches to determine the magnitude and consistency of rates. Water column carbon and nutrient inventories and surface ocean O2/Ar data are compared to satellite-derived primary productivity (PP) estimates and 14C uptake experiments. In spring, NCP was related to stratification proximal to upper ocean fronts. In summer, the most intense C drawdown was in shallow mixed layers affected by ice melt; depth-integrated C drawdown, however, increased with mixing depth. Delta O2/Ar-based methods, relying on gas exchange reconstructions, underestimate NCP due to seasonal variations in surface Delta O2/Ar and NCP rates. Mixed layer Delta O2/Ar requires approximately 60 days to reach steady state, starting from early spring. Additionally, cold temperatures prolong the sensitivity of gas exchange reconstructions to past NCP variability. Complex vertical structure, in addition to the seasonal cycle, affects interpretations of surface-based observations, including those made from satellites. During both spring and summer, substantial fractions of NCP were below the mixed layer. Satellite-derived estimates tended to overestimate PP relative to 14C-based estimates, most severely in locations of stronger upper water column stratification. Biases notwithstanding, NCP-PP comparisons indicated that community respiration was of similar magnitude to NCP. We observed that a substantial portion of NCP remained as suspended particulate matter in the upper water column, demonstrating a lag between production and export. Resolving the dynamic physical processes that structure variance in NCP and its fate will enhance the understanding of the carbon cycling in highly productive Antarctic environments. : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 Article in Journal/Newspaper Antarc* Antarctic Antarctica International Polar Year IPY Ross Sea DataCite Metadata Store (German National Library of Science and Technology) Antarctic Ross Sea Dunbar ENVELOPE(-60.199,-60.199,-62.473,-62.473) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
International Polar Year 2007-2008 IPY |
spellingShingle |
International Polar Year 2007-2008 IPY Long, Matthew C Dunbar, Robert B Tortell, Philippe Daniel Smith, Walker O Jr Mucciarone, David A DiTullio, Giacomo R Physical oceanography during Nathaniel B. Palmer cruises NBP06-01 and NBP06-08 to the Ross Sea, supplement to: Long, Matthew C; Dunbar, Robert B; Tortell, Philippe Daniel; Smith, Walker O Jr; Mucciarone, David A; DiTullio, Giacomo R (2011): Vertical structure, seasonal drawdown, and net community production in the Ross Sea, Antarctica. Journal of Geophysical Research, 116(C10), C10029 |
topic_facet |
International Polar Year 2007-2008 IPY |
description |
We calculate net community production (NCP) during summer 2005-2006 and spring 2006 in the Ross Sea using multiple approaches to determine the magnitude and consistency of rates. Water column carbon and nutrient inventories and surface ocean O2/Ar data are compared to satellite-derived primary productivity (PP) estimates and 14C uptake experiments. In spring, NCP was related to stratification proximal to upper ocean fronts. In summer, the most intense C drawdown was in shallow mixed layers affected by ice melt; depth-integrated C drawdown, however, increased with mixing depth. Delta O2/Ar-based methods, relying on gas exchange reconstructions, underestimate NCP due to seasonal variations in surface Delta O2/Ar and NCP rates. Mixed layer Delta O2/Ar requires approximately 60 days to reach steady state, starting from early spring. Additionally, cold temperatures prolong the sensitivity of gas exchange reconstructions to past NCP variability. Complex vertical structure, in addition to the seasonal cycle, affects interpretations of surface-based observations, including those made from satellites. During both spring and summer, substantial fractions of NCP were below the mixed layer. Satellite-derived estimates tended to overestimate PP relative to 14C-based estimates, most severely in locations of stronger upper water column stratification. Biases notwithstanding, NCP-PP comparisons indicated that community respiration was of similar magnitude to NCP. We observed that a substantial portion of NCP remained as suspended particulate matter in the upper water column, demonstrating a lag between production and export. Resolving the dynamic physical processes that structure variance in NCP and its fate will enhance the understanding of the carbon cycling in highly productive Antarctic environments. : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 |
format |
Article in Journal/Newspaper |
author |
Long, Matthew C Dunbar, Robert B Tortell, Philippe Daniel Smith, Walker O Jr Mucciarone, David A DiTullio, Giacomo R |
author_facet |
Long, Matthew C Dunbar, Robert B Tortell, Philippe Daniel Smith, Walker O Jr Mucciarone, David A DiTullio, Giacomo R |
author_sort |
Long, Matthew C |
title |
Physical oceanography during Nathaniel B. Palmer cruises NBP06-01 and NBP06-08 to the Ross Sea, supplement to: Long, Matthew C; Dunbar, Robert B; Tortell, Philippe Daniel; Smith, Walker O Jr; Mucciarone, David A; DiTullio, Giacomo R (2011): Vertical structure, seasonal drawdown, and net community production in the Ross Sea, Antarctica. Journal of Geophysical Research, 116(C10), C10029 |
title_short |
Physical oceanography during Nathaniel B. Palmer cruises NBP06-01 and NBP06-08 to the Ross Sea, supplement to: Long, Matthew C; Dunbar, Robert B; Tortell, Philippe Daniel; Smith, Walker O Jr; Mucciarone, David A; DiTullio, Giacomo R (2011): Vertical structure, seasonal drawdown, and net community production in the Ross Sea, Antarctica. Journal of Geophysical Research, 116(C10), C10029 |
title_full |
Physical oceanography during Nathaniel B. Palmer cruises NBP06-01 and NBP06-08 to the Ross Sea, supplement to: Long, Matthew C; Dunbar, Robert B; Tortell, Philippe Daniel; Smith, Walker O Jr; Mucciarone, David A; DiTullio, Giacomo R (2011): Vertical structure, seasonal drawdown, and net community production in the Ross Sea, Antarctica. Journal of Geophysical Research, 116(C10), C10029 |
title_fullStr |
Physical oceanography during Nathaniel B. Palmer cruises NBP06-01 and NBP06-08 to the Ross Sea, supplement to: Long, Matthew C; Dunbar, Robert B; Tortell, Philippe Daniel; Smith, Walker O Jr; Mucciarone, David A; DiTullio, Giacomo R (2011): Vertical structure, seasonal drawdown, and net community production in the Ross Sea, Antarctica. Journal of Geophysical Research, 116(C10), C10029 |
title_full_unstemmed |
Physical oceanography during Nathaniel B. Palmer cruises NBP06-01 and NBP06-08 to the Ross Sea, supplement to: Long, Matthew C; Dunbar, Robert B; Tortell, Philippe Daniel; Smith, Walker O Jr; Mucciarone, David A; DiTullio, Giacomo R (2011): Vertical structure, seasonal drawdown, and net community production in the Ross Sea, Antarctica. Journal of Geophysical Research, 116(C10), C10029 |
title_sort |
physical oceanography during nathaniel b. palmer cruises nbp06-01 and nbp06-08 to the ross sea, supplement to: long, matthew c; dunbar, robert b; tortell, philippe daniel; smith, walker o jr; mucciarone, david a; ditullio, giacomo r (2011): vertical structure, seasonal drawdown, and net community production in the ross sea, antarctica. journal of geophysical research, 116(c10), c10029 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2011 |
url |
https://dx.doi.org/10.1594/pangaea.818033 https://doi.pangaea.de/10.1594/PANGAEA.818033 |
long_lat |
ENVELOPE(-60.199,-60.199,-62.473,-62.473) |
geographic |
Antarctic Ross Sea Dunbar |
geographic_facet |
Antarctic Ross Sea Dunbar |
genre |
Antarc* Antarctic Antarctica International Polar Year IPY Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica International Polar Year IPY Ross Sea |
op_relation |
https://dx.doi.org/10.1029/2009jc005954 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.818033 https://doi.org/10.1029/2009jc005954 |
_version_ |
1766263341394690048 |