An inverse relationship between production and export efficiency in the Southern Ocean
Author Posting. © American Geophysical Union, 2013. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 40 (2013): 1557–1561, doi:10.1002/grl.50219. In the past two deca...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/6033 2023-05-15T18:24:51+02:00 An inverse relationship between production and export efficiency in the Southern Ocean Maiti, Kanchan Charette, Matthew A. Buesseler, Ken O. Kahru, Mati 2013-04-23 text/plain application/pdf application/msword https://hdl.handle.net/1912/6033 en_US eng John Wiley & Sons https://doi.org/10.1002/grl.50219 Geophysical Research Letters 40 (2013): 1557–1561 https://hdl.handle.net/1912/6033 doi:10.1002/grl.50219 Geophysical Research Letters 40 (2013): 1557–1561 doi:10.1002/grl.50219 Biological pump Southern Ocean Carbon export Article 2013 ftwhoas https://doi.org/10.1002/grl.50219 2022-05-28T22:58:52Z Author Posting. © American Geophysical Union, 2013. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 40 (2013): 1557–1561, doi:10.1002/grl.50219. In the past two decades, a number of studies have been carried out in the Southern Ocean to look at export production using drifting sediment traps and thorium-234 based measurements, which allows us to reexamine the validity of using the existing relationships between production, export efficiency, and temperature to derive satellite-based carbon export estimates in this region. Comparisons of in situ export rates with modeled rates indicate a two to fourfold overestimation of export production by existing models. Comprehensive analysis of in situ data indicates two major reasons for this difference: (i) in situ data indicate a trend of decreasing export efficiency with increasing production which is contrary to existing export models and (ii) the export efficiencies appear to be less sensitive to temperature in this region compared to the global estimates used in the existing models. The most important implication of these observations is that the simplest models of export, which predict increase in carbon flux with increasing surface productivity, may require additional parameters, different weighing of existing parameters, or separate algorithms for different oceanic regimes. This work was supported by NASA award number NNX08AB48G. 2013-10-23 Article in Journal/Newspaper Southern Ocean Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Southern Ocean Geophysical Research Letters 40 8 1557 1561 |
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Open Polar |
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Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Biological pump Southern Ocean Carbon export |
spellingShingle |
Biological pump Southern Ocean Carbon export Maiti, Kanchan Charette, Matthew A. Buesseler, Ken O. Kahru, Mati An inverse relationship between production and export efficiency in the Southern Ocean |
topic_facet |
Biological pump Southern Ocean Carbon export |
description |
Author Posting. © American Geophysical Union, 2013. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 40 (2013): 1557–1561, doi:10.1002/grl.50219. In the past two decades, a number of studies have been carried out in the Southern Ocean to look at export production using drifting sediment traps and thorium-234 based measurements, which allows us to reexamine the validity of using the existing relationships between production, export efficiency, and temperature to derive satellite-based carbon export estimates in this region. Comparisons of in situ export rates with modeled rates indicate a two to fourfold overestimation of export production by existing models. Comprehensive analysis of in situ data indicates two major reasons for this difference: (i) in situ data indicate a trend of decreasing export efficiency with increasing production which is contrary to existing export models and (ii) the export efficiencies appear to be less sensitive to temperature in this region compared to the global estimates used in the existing models. The most important implication of these observations is that the simplest models of export, which predict increase in carbon flux with increasing surface productivity, may require additional parameters, different weighing of existing parameters, or separate algorithms for different oceanic regimes. This work was supported by NASA award number NNX08AB48G. 2013-10-23 |
format |
Article in Journal/Newspaper |
author |
Maiti, Kanchan Charette, Matthew A. Buesseler, Ken O. Kahru, Mati |
author_facet |
Maiti, Kanchan Charette, Matthew A. Buesseler, Ken O. Kahru, Mati |
author_sort |
Maiti, Kanchan |
title |
An inverse relationship between production and export efficiency in the Southern Ocean |
title_short |
An inverse relationship between production and export efficiency in the Southern Ocean |
title_full |
An inverse relationship between production and export efficiency in the Southern Ocean |
title_fullStr |
An inverse relationship between production and export efficiency in the Southern Ocean |
title_full_unstemmed |
An inverse relationship between production and export efficiency in the Southern Ocean |
title_sort |
inverse relationship between production and export efficiency in the southern ocean |
publisher |
John Wiley & Sons |
publishDate |
2013 |
url |
https://hdl.handle.net/1912/6033 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Geophysical Research Letters 40 (2013): 1557–1561 doi:10.1002/grl.50219 |
op_relation |
https://doi.org/10.1002/grl.50219 Geophysical Research Letters 40 (2013): 1557–1561 https://hdl.handle.net/1912/6033 doi:10.1002/grl.50219 |
op_doi |
https://doi.org/10.1002/grl.50219 |
container_title |
Geophysical Research Letters |
container_volume |
40 |
container_issue |
8 |
container_start_page |
1557 |
op_container_end_page |
1561 |
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1766205795809099776 |