elementascience.org Spatial variability of surface pCO2 and
Partial pressure of CO2 (pCO2) and dissolved oxygen (DO) in the surface waters of the Amundsen Sea Polynya (ASP) were measured during austral summer 2010–2011 on the Amundsen Sea Polynya International Research Expedition (ASPIRE). Surface pCO2 in the central polynya was as low as 130 µatm, mainly du...
Published in: | Elementa: Science of the Anthropocene |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.680.4292 http://elementascience.org/article/fetchObjectAttachment.action?representation%3DPDF%26uri%3Dinfo%3Adoi/10.12952/journal.elementa.000036 |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.680.4292 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.680.4292 2023-05-15T13:23:54+02:00 elementascience.org Spatial variability of surface pCO2 and The Pennsylvania State University CiteSeerX Archives http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.680.4292 http://elementascience.org/article/fetchObjectAttachment.action?representation%3DPDF%26uri%3Dinfo%3Adoi/10.12952/journal.elementa.000036 en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.680.4292 http://elementascience.org/article/fetchObjectAttachment.action?representation%3DPDF%26uri%3Dinfo%3Adoi/10.12952/journal.elementa.000036 Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://elementascience.org/article/fetchObjectAttachment.action?representation%3DPDF%26uri%3Dinfo%3Adoi/10.12952/journal.elementa.000036 text ftciteseerx https://doi.org/10.12952/journal.elementa.000036 2016-01-08T17:51:57Z Partial pressure of CO2 (pCO2) and dissolved oxygen (DO) in the surface waters of the Amundsen Sea Polynya (ASP) were measured during austral summer 2010–2011 on the Amundsen Sea Polynya International Research Expedition (ASPIRE). Surface pCO2 in the central polynya was as low as 130 µatm, mainly due to strong net primary production. Comparing saturation states of pCO2 and DO distinguished dominant fac-tors (biological activity, temperature, upwelling, and ice melt) controlling pCO2 across regions. Air-sea CO2 flux, estimated using average shipboard winds, showed high spatial variability (–52 to 25 mmol C m–2 d–1) related to these factors. The central region exhibited a high flux of –36 ± 8.4 mmol C m–2 d–1, which is ∼ 50% larger than that reported for the peak of the bloom in the well-studied Ross Sea, comparable to high rates reported for the Chukchi Sea, and significantly higher than reported for most continental shelves around the world. This central region ( ∼ 20,000 km2) accounted for 85 % of the CO2 uptake for the entire open water area. Margins with lower algal biomass accounted for ∼ 15 % of regional carbon uptake, likely resulting from pCO2 reductions by sea ice melt. During ASPIRE we also observed pCO2 up to 490 µatm in a small region near the Dotson Ice Shelf with an efflux of 11 ± 5.4 mmol C m–2 d–1 that offset about 3 % of the uptake in the much larger central region. Overall, the 2010–2011 ASP was a large net sink for atmospheric CO2 Text Amundsen Sea Chukchi Chukchi Sea Dotson Ice Shelf Ice Shelf Ross Sea Sea ice Unknown Amundsen Sea Austral Chukchi Sea Dotson Ice Shelf ENVELOPE(-112.367,-112.367,-74.400,-74.400) Ross Sea Elementa: Science of the Anthropocene 3 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
Partial pressure of CO2 (pCO2) and dissolved oxygen (DO) in the surface waters of the Amundsen Sea Polynya (ASP) were measured during austral summer 2010–2011 on the Amundsen Sea Polynya International Research Expedition (ASPIRE). Surface pCO2 in the central polynya was as low as 130 µatm, mainly due to strong net primary production. Comparing saturation states of pCO2 and DO distinguished dominant fac-tors (biological activity, temperature, upwelling, and ice melt) controlling pCO2 across regions. Air-sea CO2 flux, estimated using average shipboard winds, showed high spatial variability (–52 to 25 mmol C m–2 d–1) related to these factors. The central region exhibited a high flux of –36 ± 8.4 mmol C m–2 d–1, which is ∼ 50% larger than that reported for the peak of the bloom in the well-studied Ross Sea, comparable to high rates reported for the Chukchi Sea, and significantly higher than reported for most continental shelves around the world. This central region ( ∼ 20,000 km2) accounted for 85 % of the CO2 uptake for the entire open water area. Margins with lower algal biomass accounted for ∼ 15 % of regional carbon uptake, likely resulting from pCO2 reductions by sea ice melt. During ASPIRE we also observed pCO2 up to 490 µatm in a small region near the Dotson Ice Shelf with an efflux of 11 ± 5.4 mmol C m–2 d–1 that offset about 3 % of the uptake in the much larger central region. Overall, the 2010–2011 ASP was a large net sink for atmospheric CO2 |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
title |
elementascience.org Spatial variability of surface pCO2 and |
spellingShingle |
elementascience.org Spatial variability of surface pCO2 and |
title_short |
elementascience.org Spatial variability of surface pCO2 and |
title_full |
elementascience.org Spatial variability of surface pCO2 and |
title_fullStr |
elementascience.org Spatial variability of surface pCO2 and |
title_full_unstemmed |
elementascience.org Spatial variability of surface pCO2 and |
title_sort |
elementascience.org spatial variability of surface pco2 and |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.680.4292 http://elementascience.org/article/fetchObjectAttachment.action?representation%3DPDF%26uri%3Dinfo%3Adoi/10.12952/journal.elementa.000036 |
long_lat |
ENVELOPE(-112.367,-112.367,-74.400,-74.400) |
geographic |
Amundsen Sea Austral Chukchi Sea Dotson Ice Shelf Ross Sea |
geographic_facet |
Amundsen Sea Austral Chukchi Sea Dotson Ice Shelf Ross Sea |
genre |
Amundsen Sea Chukchi Chukchi Sea Dotson Ice Shelf Ice Shelf Ross Sea Sea ice |
genre_facet |
Amundsen Sea Chukchi Chukchi Sea Dotson Ice Shelf Ice Shelf Ross Sea Sea ice |
op_source |
http://elementascience.org/article/fetchObjectAttachment.action?representation%3DPDF%26uri%3Dinfo%3Adoi/10.12952/journal.elementa.000036 |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.680.4292 http://elementascience.org/article/fetchObjectAttachment.action?representation%3DPDF%26uri%3Dinfo%3Adoi/10.12952/journal.elementa.000036 |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
op_doi |
https://doi.org/10.12952/journal.elementa.000036 |
container_title |
Elementa: Science of the Anthropocene |
container_volume |
3 |
_version_ |
1766376260551835648 |