Effects of the glacial meltwater supply on carbonate chemistry in Bowdoin Fjord, Northwestern Greenland
To understand the effects of the glacial meltwater supply on carbonate chemistry and the air–sea CO 2 flux within the fjord, water samples were collected in Bowdoin Fjord in northwestern Greenland for dissolved inorganic carbon (DIC) concentration, total alkalinity (TA), oxygen isotopic ratio (δ 18...
Published in: | Frontiers in Marine Science |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Frontiers Media SA
2022
|
Subjects: | |
Online Access: | http://dx.doi.org/10.3389/fmars.2022.873860 https://www.frontiersin.org/articles/10.3389/fmars.2022.873860/full |
id |
crfrontiers:10.3389/fmars.2022.873860 |
---|---|
record_format |
openpolar |
spelling |
crfrontiers:10.3389/fmars.2022.873860 2024-02-11T10:04:01+01:00 Effects of the glacial meltwater supply on carbonate chemistry in Bowdoin Fjord, Northwestern Greenland Horikawa, Takahito Nomura, Daiki Kanna, Naoya Fukamachi, Yasushi Sugiyama, Shin 2022 http://dx.doi.org/10.3389/fmars.2022.873860 https://www.frontiersin.org/articles/10.3389/fmars.2022.873860/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Marine Science volume 9 ISSN 2296-7745 Ocean Engineering Water Science and Technology Aquatic Science Global and Planetary Change Oceanography journal-article 2022 crfrontiers https://doi.org/10.3389/fmars.2022.873860 2024-01-26T10:07:03Z To understand the effects of the glacial meltwater supply on carbonate chemistry and the air–sea CO 2 flux within the fjord, water samples were collected in Bowdoin Fjord in northwestern Greenland for dissolved inorganic carbon (DIC) concentration, total alkalinity (TA), oxygen isotopic ratio (δ 18 O), and chlorophyll a concentration analyses in the summers of 2016 and 2017. The partial pressure of CO 2 ( p CO 2 ) in surface water, calculated from DIC and TA, was less than 200 µatm, and was significantly lower than that in the atmosphere (399 ± 3 µatm). Therefore, surface water of the fjord acts as sink for CO 2 in the atmosphere (–4.9 ± 0.7 mmol m –2 d –1 ). To evaluate the effects of freshwater and land-derived substances by glacial meltwater on p CO 2 in the fjord, we calculated the changes of p CO 2 in salinity and carbonate chemistry that would result from the inflow of glacial meltwater into the fjord. The calculated p CO 2 was high near the calving front, where the contribution of glacier meltwater was significant. Examination of the relationship between salinity-normalized DIC and TA, which was considered DIC and TA input from the land, suggested that the land-derived high p CO 2 freshwater affected mainly by the remineralization of the organic matter by bacterial activity was supplied to the Bowdoin Fjord. Article in Journal/Newspaper glacier Greenland Frontiers (Publisher) Bowdoin ENVELOPE(-69.317,-69.317,77.683,77.683) Bowdoin Fjord ENVELOPE(-68.521,-68.521,77.598,77.598) Greenland Frontiers in Marine Science 9 |
institution |
Open Polar |
collection |
Frontiers (Publisher) |
op_collection_id |
crfrontiers |
language |
unknown |
topic |
Ocean Engineering Water Science and Technology Aquatic Science Global and Planetary Change Oceanography |
spellingShingle |
Ocean Engineering Water Science and Technology Aquatic Science Global and Planetary Change Oceanography Horikawa, Takahito Nomura, Daiki Kanna, Naoya Fukamachi, Yasushi Sugiyama, Shin Effects of the glacial meltwater supply on carbonate chemistry in Bowdoin Fjord, Northwestern Greenland |
topic_facet |
Ocean Engineering Water Science and Technology Aquatic Science Global and Planetary Change Oceanography |
description |
To understand the effects of the glacial meltwater supply on carbonate chemistry and the air–sea CO 2 flux within the fjord, water samples were collected in Bowdoin Fjord in northwestern Greenland for dissolved inorganic carbon (DIC) concentration, total alkalinity (TA), oxygen isotopic ratio (δ 18 O), and chlorophyll a concentration analyses in the summers of 2016 and 2017. The partial pressure of CO 2 ( p CO 2 ) in surface water, calculated from DIC and TA, was less than 200 µatm, and was significantly lower than that in the atmosphere (399 ± 3 µatm). Therefore, surface water of the fjord acts as sink for CO 2 in the atmosphere (–4.9 ± 0.7 mmol m –2 d –1 ). To evaluate the effects of freshwater and land-derived substances by glacial meltwater on p CO 2 in the fjord, we calculated the changes of p CO 2 in salinity and carbonate chemistry that would result from the inflow of glacial meltwater into the fjord. The calculated p CO 2 was high near the calving front, where the contribution of glacier meltwater was significant. Examination of the relationship between salinity-normalized DIC and TA, which was considered DIC and TA input from the land, suggested that the land-derived high p CO 2 freshwater affected mainly by the remineralization of the organic matter by bacterial activity was supplied to the Bowdoin Fjord. |
format |
Article in Journal/Newspaper |
author |
Horikawa, Takahito Nomura, Daiki Kanna, Naoya Fukamachi, Yasushi Sugiyama, Shin |
author_facet |
Horikawa, Takahito Nomura, Daiki Kanna, Naoya Fukamachi, Yasushi Sugiyama, Shin |
author_sort |
Horikawa, Takahito |
title |
Effects of the glacial meltwater supply on carbonate chemistry in Bowdoin Fjord, Northwestern Greenland |
title_short |
Effects of the glacial meltwater supply on carbonate chemistry in Bowdoin Fjord, Northwestern Greenland |
title_full |
Effects of the glacial meltwater supply on carbonate chemistry in Bowdoin Fjord, Northwestern Greenland |
title_fullStr |
Effects of the glacial meltwater supply on carbonate chemistry in Bowdoin Fjord, Northwestern Greenland |
title_full_unstemmed |
Effects of the glacial meltwater supply on carbonate chemistry in Bowdoin Fjord, Northwestern Greenland |
title_sort |
effects of the glacial meltwater supply on carbonate chemistry in bowdoin fjord, northwestern greenland |
publisher |
Frontiers Media SA |
publishDate |
2022 |
url |
http://dx.doi.org/10.3389/fmars.2022.873860 https://www.frontiersin.org/articles/10.3389/fmars.2022.873860/full |
long_lat |
ENVELOPE(-69.317,-69.317,77.683,77.683) ENVELOPE(-68.521,-68.521,77.598,77.598) |
geographic |
Bowdoin Bowdoin Fjord Greenland |
geographic_facet |
Bowdoin Bowdoin Fjord Greenland |
genre |
glacier Greenland |
genre_facet |
glacier Greenland |
op_source |
Frontiers in Marine Science volume 9 ISSN 2296-7745 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fmars.2022.873860 |
container_title |
Frontiers in Marine Science |
container_volume |
9 |
_version_ |
1790600443706998784 |