Annual cycle of carbonate chemistry and decadal change in coastal Prydz Bay, East Antarctica
The annual cycles of dissolved carbon dioxide (CO2) system parameters were determined for a coastal site in East Antarctica using samples collected from May 2010 to February 2011 in Prydz Bay. These observations show the seasonal influence of ice formation and melt, biological production, and airsea...
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Online Access: | https://doi.org/10.1016/j.marchem.2013.06.006 http://ecite.utas.edu.au/85761 |
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ftunivtasecite:oai:ecite.utas.edu.au:85761 2023-05-15T13:37:23+02:00 Annual cycle of carbonate chemistry and decadal change in coastal Prydz Bay, East Antarctica Roden, N Shadwick, EH Tilbrook, BD Trull, T 2013 https://doi.org/10.1016/j.marchem.2013.06.006 http://ecite.utas.edu.au/85761 en eng Elsevier Science Bv http://dx.doi.org/10.1016/j.marchem.2013.06.006 Roden, N and Shadwick, EH and Tilbrook, BD and Trull, T, Annual cycle of carbonate chemistry and decadal change in coastal Prydz Bay, East Antarctica, Marine Chemistry, 155 pp. 135-147. ISSN 0304-4203 (2013) [Refereed Article] http://ecite.utas.edu.au/85761 Earth Sciences Oceanography Chemical Oceanography Refereed Article PeerReviewed 2013 ftunivtasecite https://doi.org/10.1016/j.marchem.2013.06.006 2019-12-13T21:49:56Z The annual cycles of dissolved carbon dioxide (CO2) system parameters were determined for a coastal site in East Antarctica using samples collected from May 2010 to February 2011 in Prydz Bay. These observations show the seasonal influence of ice formation and melt, biological production, and airsea CO2 flux on changes in total dissolved inorganic carbon (DIC), pHsws and the saturation state of aragonite (Ωar). Net community production of 1.8 0.4 mol C m− 2 in the productive summer months (NovemberFebruary) caused large seasonal decreases in DIC. The decrease in DIC caused a change in surface water partial pressure of CO2 from values over-saturated with respect to the atmosphere in the ice-covered winter period, to undersaturated waters in the summer months. The study site was estimated to be an annual net sink for CO2 of 0.54 0.11 mol C m− 2 year− 1. The calculated pHsws and Ωar values varied seasonally from 7.99 to 8.20 and 1.19 to 1.92, respectively. The observed variability was compared to similar measurements carried out in 199395 at the same location. Natural variability in carbon cycle dynamics caused changes in pHsws that were nearly twice as large as those expected from changes estimated due to the uptake of CO2 from the atmosphere over this time, assuming that the surface waters tracked increases in atmospheric CO2. This highlights the difficulties associated with predicting trends in seawater pH and dissolved CO2 system parameters in dynamic, high latitude, coastal locations with sparse temporal and spatial carbon cycle observations. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Prydz Bay eCite UTAS (University of Tasmania) East Antarctica Prydz Bay Marine Chemistry 155 135 147 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Chemical Oceanography |
spellingShingle |
Earth Sciences Oceanography Chemical Oceanography Roden, N Shadwick, EH Tilbrook, BD Trull, T Annual cycle of carbonate chemistry and decadal change in coastal Prydz Bay, East Antarctica |
topic_facet |
Earth Sciences Oceanography Chemical Oceanography |
description |
The annual cycles of dissolved carbon dioxide (CO2) system parameters were determined for a coastal site in East Antarctica using samples collected from May 2010 to February 2011 in Prydz Bay. These observations show the seasonal influence of ice formation and melt, biological production, and airsea CO2 flux on changes in total dissolved inorganic carbon (DIC), pHsws and the saturation state of aragonite (Ωar). Net community production of 1.8 0.4 mol C m− 2 in the productive summer months (NovemberFebruary) caused large seasonal decreases in DIC. The decrease in DIC caused a change in surface water partial pressure of CO2 from values over-saturated with respect to the atmosphere in the ice-covered winter period, to undersaturated waters in the summer months. The study site was estimated to be an annual net sink for CO2 of 0.54 0.11 mol C m− 2 year− 1. The calculated pHsws and Ωar values varied seasonally from 7.99 to 8.20 and 1.19 to 1.92, respectively. The observed variability was compared to similar measurements carried out in 199395 at the same location. Natural variability in carbon cycle dynamics caused changes in pHsws that were nearly twice as large as those expected from changes estimated due to the uptake of CO2 from the atmosphere over this time, assuming that the surface waters tracked increases in atmospheric CO2. This highlights the difficulties associated with predicting trends in seawater pH and dissolved CO2 system parameters in dynamic, high latitude, coastal locations with sparse temporal and spatial carbon cycle observations. |
format |
Article in Journal/Newspaper |
author |
Roden, N Shadwick, EH Tilbrook, BD Trull, T |
author_facet |
Roden, N Shadwick, EH Tilbrook, BD Trull, T |
author_sort |
Roden, N |
title |
Annual cycle of carbonate chemistry and decadal change in coastal Prydz Bay, East Antarctica |
title_short |
Annual cycle of carbonate chemistry and decadal change in coastal Prydz Bay, East Antarctica |
title_full |
Annual cycle of carbonate chemistry and decadal change in coastal Prydz Bay, East Antarctica |
title_fullStr |
Annual cycle of carbonate chemistry and decadal change in coastal Prydz Bay, East Antarctica |
title_full_unstemmed |
Annual cycle of carbonate chemistry and decadal change in coastal Prydz Bay, East Antarctica |
title_sort |
annual cycle of carbonate chemistry and decadal change in coastal prydz bay, east antarctica |
publisher |
Elsevier Science Bv |
publishDate |
2013 |
url |
https://doi.org/10.1016/j.marchem.2013.06.006 http://ecite.utas.edu.au/85761 |
geographic |
East Antarctica Prydz Bay |
geographic_facet |
East Antarctica Prydz Bay |
genre |
Antarc* Antarctica East Antarctica Prydz Bay |
genre_facet |
Antarc* Antarctica East Antarctica Prydz Bay |
op_relation |
http://dx.doi.org/10.1016/j.marchem.2013.06.006 Roden, N and Shadwick, EH and Tilbrook, BD and Trull, T, Annual cycle of carbonate chemistry and decadal change in coastal Prydz Bay, East Antarctica, Marine Chemistry, 155 pp. 135-147. ISSN 0304-4203 (2013) [Refereed Article] http://ecite.utas.edu.au/85761 |
op_doi |
https://doi.org/10.1016/j.marchem.2013.06.006 |
container_title |
Marine Chemistry |
container_volume |
155 |
container_start_page |
135 |
op_container_end_page |
147 |
_version_ |
1766090960751558656 |