The seasonal cycle of ocean-atmosphere CO2 flux in Ryder Bay, west Antarctic Peninsula
Approximately 15 million km2 of the Southern Ocean is seasonally ice covered, yet the processes affecting carbon cycling and gas exchange in this climatically important region remain inadequately understood. Here, 3 years of dissolved inorganic carbon (DIC) measurements and carbon dioxide (CO2) flux...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2015
|
Subjects: | |
Online Access: | https://eprints.soton.ac.uk/376686/ https://eprints.soton.ac.uk/376686/1/Legge_et_al-2015-Geophysical_Research_Letters.pdf |
id |
ftsouthampton:oai:eprints.soton.ac.uk:376686 |
---|---|
record_format |
openpolar |
spelling |
ftsouthampton:oai:eprints.soton.ac.uk:376686 2023-07-30T03:58:07+02:00 The seasonal cycle of ocean-atmosphere CO2 flux in Ryder Bay, west Antarctic Peninsula Legge, Oliver J. Bakker, Dorothee C.E. Johnson, Martin T. Meredith, Michael P. Venables, Hugh J. Brown, Peter J. Lee, Gareth A. 2015-04-28 text https://eprints.soton.ac.uk/376686/ https://eprints.soton.ac.uk/376686/1/Legge_et_al-2015-Geophysical_Research_Letters.pdf en English eng https://eprints.soton.ac.uk/376686/1/Legge_et_al-2015-Geophysical_Research_Letters.pdf Legge, Oliver J., Bakker, Dorothee C.E., Johnson, Martin T., Meredith, Michael P., Venables, Hugh J., Brown, Peter J. and Lee, Gareth A. (2015) The seasonal cycle of ocean-atmosphere CO2 flux in Ryder Bay, west Antarctic Peninsula. Geophysical Research Letters, 42 (8), 2934-2942. (doi:10.1002/2015GL063796 <http://dx.doi.org/10.1002/2015GL063796>). cc_by_4 Article PeerReviewed 2015 ftsouthampton https://doi.org/10.1002/2015GL063796 2023-07-09T21:58:52Z Approximately 15 million km2 of the Southern Ocean is seasonally ice covered, yet the processes affecting carbon cycling and gas exchange in this climatically important region remain inadequately understood. Here, 3 years of dissolved inorganic carbon (DIC) measurements and carbon dioxide (CO2) fluxes from Ryder Bay on the west Antarctic Peninsula (WAP) are presented. During spring and summer, primary production in the surface ocean promotes atmospheric CO2 uptake. In winter, higher DIC, caused by net heterotrophy and vertical mixing with Circumpolar Deep Water, results in outgassing of CO2 from the ocean. Ryder Bay is found to be a net sink of atmospheric CO2 of 0.59–0.94 mol Cm?2 yr?1 (average of 3 years). Seasonal sea ice cover increases the net annual CO2 uptake, but its effect on gas exchange remains poorly constrained. A reduction in sea ice on the WAP shelf may reduce the strength of the oceanic CO2 sink in this region. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Sea ice Southern Ocean University of Southampton: e-Prints Soton Antarctic Antarctic Peninsula Ryder ENVELOPE(-68.333,-68.333,-67.566,-67.566) Ryder Bay ENVELOPE(-68.333,-68.333,-67.567,-67.567) Southern Ocean Geophysical Research Letters 42 8 2934 2942 |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
Approximately 15 million km2 of the Southern Ocean is seasonally ice covered, yet the processes affecting carbon cycling and gas exchange in this climatically important region remain inadequately understood. Here, 3 years of dissolved inorganic carbon (DIC) measurements and carbon dioxide (CO2) fluxes from Ryder Bay on the west Antarctic Peninsula (WAP) are presented. During spring and summer, primary production in the surface ocean promotes atmospheric CO2 uptake. In winter, higher DIC, caused by net heterotrophy and vertical mixing with Circumpolar Deep Water, results in outgassing of CO2 from the ocean. Ryder Bay is found to be a net sink of atmospheric CO2 of 0.59–0.94 mol Cm?2 yr?1 (average of 3 years). Seasonal sea ice cover increases the net annual CO2 uptake, but its effect on gas exchange remains poorly constrained. A reduction in sea ice on the WAP shelf may reduce the strength of the oceanic CO2 sink in this region. |
format |
Article in Journal/Newspaper |
author |
Legge, Oliver J. Bakker, Dorothee C.E. Johnson, Martin T. Meredith, Michael P. Venables, Hugh J. Brown, Peter J. Lee, Gareth A. |
spellingShingle |
Legge, Oliver J. Bakker, Dorothee C.E. Johnson, Martin T. Meredith, Michael P. Venables, Hugh J. Brown, Peter J. Lee, Gareth A. The seasonal cycle of ocean-atmosphere CO2 flux in Ryder Bay, west Antarctic Peninsula |
author_facet |
Legge, Oliver J. Bakker, Dorothee C.E. Johnson, Martin T. Meredith, Michael P. Venables, Hugh J. Brown, Peter J. Lee, Gareth A. |
author_sort |
Legge, Oliver J. |
title |
The seasonal cycle of ocean-atmosphere CO2 flux in Ryder Bay, west Antarctic Peninsula |
title_short |
The seasonal cycle of ocean-atmosphere CO2 flux in Ryder Bay, west Antarctic Peninsula |
title_full |
The seasonal cycle of ocean-atmosphere CO2 flux in Ryder Bay, west Antarctic Peninsula |
title_fullStr |
The seasonal cycle of ocean-atmosphere CO2 flux in Ryder Bay, west Antarctic Peninsula |
title_full_unstemmed |
The seasonal cycle of ocean-atmosphere CO2 flux in Ryder Bay, west Antarctic Peninsula |
title_sort |
seasonal cycle of ocean-atmosphere co2 flux in ryder bay, west antarctic peninsula |
publishDate |
2015 |
url |
https://eprints.soton.ac.uk/376686/ https://eprints.soton.ac.uk/376686/1/Legge_et_al-2015-Geophysical_Research_Letters.pdf |
long_lat |
ENVELOPE(-68.333,-68.333,-67.566,-67.566) ENVELOPE(-68.333,-68.333,-67.567,-67.567) |
geographic |
Antarctic Antarctic Peninsula Ryder Ryder Bay Southern Ocean |
geographic_facet |
Antarctic Antarctic Peninsula Ryder Ryder Bay Southern Ocean |
genre |
Antarc* Antarctic Antarctic Peninsula Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Sea ice Southern Ocean |
op_relation |
https://eprints.soton.ac.uk/376686/1/Legge_et_al-2015-Geophysical_Research_Letters.pdf Legge, Oliver J., Bakker, Dorothee C.E., Johnson, Martin T., Meredith, Michael P., Venables, Hugh J., Brown, Peter J. and Lee, Gareth A. (2015) The seasonal cycle of ocean-atmosphere CO2 flux in Ryder Bay, west Antarctic Peninsula. Geophysical Research Letters, 42 (8), 2934-2942. (doi:10.1002/2015GL063796 <http://dx.doi.org/10.1002/2015GL063796>). |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.1002/2015GL063796 |
container_title |
Geophysical Research Letters |
container_volume |
42 |
container_issue |
8 |
container_start_page |
2934 |
op_container_end_page |
2942 |
_version_ |
1772821014547267584 |