High-frequency variability of CO2 in Grand Passage, Bay of Fundy, Nova Scotia
Assessing changes in the marine carbon cycle arising from anthropogenic CO2 emissions requires a detailed understanding of the carbonate system\'s natural variability. Coastal ecosystems vary over short spatial and temporal scales, so their dynamics are not well described by long-term and broad...
Published in: | Biogeosciences |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
EGU - Copernicus Publication
2019
|
Subjects: | |
Online Access: | https://publications.hereon.de/id/38593 https://publications.hzg.de/id/38593 https://doi.org/10.5194/bg-16-605-2019 |
id |
fthzgzmk:oai:publications.hereon.de:38593 |
---|---|
record_format |
openpolar |
spelling |
fthzgzmk:oai:publications.hereon.de:38593 2023-06-11T04:15:25+02:00 High-frequency variability of CO2 in Grand Passage, Bay of Fundy, Nova Scotia Horwitz, R. Hay, A. Burt, W. Cheel, R. Salisbury, J. Thomas, H. 2019 https://publications.hereon.de/id/38593 https://publications.hzg.de/id/38593 https://doi.org/10.5194/bg-16-605-2019 en eng EGU - Copernicus Publication https://dx.doi.org/10.5194/bg-16-605-2019 urn:issn:1726-4170 https://publications.hereon.de/id/38593 https://publications.hzg.de/id/38593 info:eu-repo/semantics/openAccess open_access oa_gold issn:1726-4170 Horwitz, R.; Hay, A.; Burt, W.; Cheel, R.; Salisbury, J.; Thomas, H.: High-frequency variability of CO2 in Grand Passage, Bay of Fundy, Nova Scotia. In: Biogeosciences. Vol. 16 (2019) 2, 605 - 616. (DOI: /10.5194/bg-16-605-2019) info:eu-repo/semantics/article Zeitschrift Artikel 2019 fthzgzmk https://doi.org/10.5194/bg-16-605-2019 2023-05-28T23:24:58Z Assessing changes in the marine carbon cycle arising from anthropogenic CO2 emissions requires a detailed understanding of the carbonate system\'s natural variability. Coastal ecosystems vary over short spatial and temporal scales, so their dynamics are not well described by long-term and broad regional averages. A year-long time series of pCO2, temperature, salinity, and currents is used to quantify the high-frequency variability of the carbonate system at the mouth of the Bay of Fundy, Nova Scotia. The seasonal cycle of pCO2 is modulated by a diel cycle that is larger in summer than in winter and a tidal contribution that is primarily M2, with amplitude roughly half that of the diel cycle throughout the year. The interaction between tidal currents and carbonate system variables leads to lateral transport by tidal pumping, which moves alkalinity and dissolved inorganic carbon (DIC) out of the bay, opposite to the mean flow in the region, and constitutes a new feature of how this strongly tidal region connects to the larger Gulf of Maine and northwest Atlantic carbon system. These results suggest that tidal pumping could substantially modulate the coastal ocean\'s response to global ocean acidification in any region with large tides and spatial variation in biological activity, requiring that high-frequency variability be accounted for in assessments of carbon budgets of coastal regions. Article in Journal/Newspaper Northwest Atlantic Ocean acidification Hereon Publications (Helmholtz-Zentrum) Biogeosciences 16 2 605 616 |
institution |
Open Polar |
collection |
Hereon Publications (Helmholtz-Zentrum) |
op_collection_id |
fthzgzmk |
language |
English |
description |
Assessing changes in the marine carbon cycle arising from anthropogenic CO2 emissions requires a detailed understanding of the carbonate system\'s natural variability. Coastal ecosystems vary over short spatial and temporal scales, so their dynamics are not well described by long-term and broad regional averages. A year-long time series of pCO2, temperature, salinity, and currents is used to quantify the high-frequency variability of the carbonate system at the mouth of the Bay of Fundy, Nova Scotia. The seasonal cycle of pCO2 is modulated by a diel cycle that is larger in summer than in winter and a tidal contribution that is primarily M2, with amplitude roughly half that of the diel cycle throughout the year. The interaction between tidal currents and carbonate system variables leads to lateral transport by tidal pumping, which moves alkalinity and dissolved inorganic carbon (DIC) out of the bay, opposite to the mean flow in the region, and constitutes a new feature of how this strongly tidal region connects to the larger Gulf of Maine and northwest Atlantic carbon system. These results suggest that tidal pumping could substantially modulate the coastal ocean\'s response to global ocean acidification in any region with large tides and spatial variation in biological activity, requiring that high-frequency variability be accounted for in assessments of carbon budgets of coastal regions. |
format |
Article in Journal/Newspaper |
author |
Horwitz, R. Hay, A. Burt, W. Cheel, R. Salisbury, J. Thomas, H. |
spellingShingle |
Horwitz, R. Hay, A. Burt, W. Cheel, R. Salisbury, J. Thomas, H. High-frequency variability of CO2 in Grand Passage, Bay of Fundy, Nova Scotia |
author_facet |
Horwitz, R. Hay, A. Burt, W. Cheel, R. Salisbury, J. Thomas, H. |
author_sort |
Horwitz, R. |
title |
High-frequency variability of CO2 in Grand Passage, Bay of Fundy, Nova Scotia |
title_short |
High-frequency variability of CO2 in Grand Passage, Bay of Fundy, Nova Scotia |
title_full |
High-frequency variability of CO2 in Grand Passage, Bay of Fundy, Nova Scotia |
title_fullStr |
High-frequency variability of CO2 in Grand Passage, Bay of Fundy, Nova Scotia |
title_full_unstemmed |
High-frequency variability of CO2 in Grand Passage, Bay of Fundy, Nova Scotia |
title_sort |
high-frequency variability of co2 in grand passage, bay of fundy, nova scotia |
publisher |
EGU - Copernicus Publication |
publishDate |
2019 |
url |
https://publications.hereon.de/id/38593 https://publications.hzg.de/id/38593 https://doi.org/10.5194/bg-16-605-2019 |
genre |
Northwest Atlantic Ocean acidification |
genre_facet |
Northwest Atlantic Ocean acidification |
op_source |
issn:1726-4170 Horwitz, R.; Hay, A.; Burt, W.; Cheel, R.; Salisbury, J.; Thomas, H.: High-frequency variability of CO2 in Grand Passage, Bay of Fundy, Nova Scotia. In: Biogeosciences. Vol. 16 (2019) 2, 605 - 616. (DOI: /10.5194/bg-16-605-2019) |
op_relation |
https://dx.doi.org/10.5194/bg-16-605-2019 urn:issn:1726-4170 https://publications.hereon.de/id/38593 https://publications.hzg.de/id/38593 |
op_rights |
info:eu-repo/semantics/openAccess open_access oa_gold |
op_doi |
https://doi.org/10.5194/bg-16-605-2019 |
container_title |
Biogeosciences |
container_volume |
16 |
container_issue |
2 |
container_start_page |
605 |
op_container_end_page |
616 |
_version_ |
1768372214466347008 |