Causes of increased dissolved inorganic carbon in the subsurface layers in the western shelfbreak and high latitudes basin in the Arctic Pacific sector
The expansion of dissolved inorganic carbon (DIC)-rich water carried by the Pacific inflow creates a DIC maximum layer and exerts important influences on ocean acidification in the subsurface Arctic Ocean. This study analyzed shifts in the DIC distribution of the subsurface Arctic Ocean during 1998–...
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ftdoajarticles:oai:doaj.org/article:0be895c60b804870a5a688224b0042be 2023-09-05T13:16:55+02:00 Causes of increased dissolved inorganic carbon in the subsurface layers in the western shelfbreak and high latitudes basin in the Arctic Pacific sector Gangzhi Chu Xiaofan Luo Zijia Zheng Wei Zhao Hao Wei 2021-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/ac2408 https://doaj.org/article/0be895c60b804870a5a688224b0042be EN eng IOP Publishing https://doi.org/10.1088/1748-9326/ac2408 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/ac2408 1748-9326 https://doaj.org/article/0be895c60b804870a5a688224b0042be Environmental Research Letters, Vol 16, Iss 10, p 104008 (2021) dissolved inorganic carbon Pacific Winter Water model Arctic Ocean Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2021 ftdoajarticles https://doi.org/10.1088/1748-9326/ac2408 2023-08-13T00:37:05Z The expansion of dissolved inorganic carbon (DIC)-rich water carried by the Pacific inflow creates a DIC maximum layer and exerts important influences on ocean acidification in the subsurface Arctic Ocean. This study analyzed shifts in the DIC distribution of the subsurface Arctic Ocean during 1998–2015 through hindcast simulation using a three-dimensional ocean-sea ice-biogeochemical model. For this purpose, the study was divided into two time periods (1998–2007 and 2008–2015). The results showed that the lower boundary layer of the Pacific Winter Water, defined as an isopycnal of 27 kg m ^−3 , became deeper by ∼50 m in the central Canada Basin and expanded northward during 2008–2015 relative to 1998–2007. Accordingly, the subsurface DIC maximum layer deepened and expanded northwards into the Makarov Basin at high latitudes around 85° N. During 2008–2015, DIC concentrations, averaged over a 50–250 m water column, increased significantly in the Chukchi-East Siberian Shelfbreak and Makarov Basin. The DIC increase over the shelfbreak is mainly attributable to increased local biological degradation and the transportation of DIC-rich water from the Chukchi Shelf through Barrow Canyon. Estimates of the DIC budget indicated that advection controlled the increase in DIC content in the Makarov Basin during 2008–2015. This is attributed to the shift of the ocean circulation pattern, in which the ocean current along the Chukchi-East Siberian Slope to the Makarov Basin became stronger during 2008–2015, promoting the transport of DIC-rich Pacific Water into the Makarov Basin. Article in Journal/Newspaper Arctic Arctic Ocean canada basin Chukchi makarov basin Ocean acidification Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Barrow Canyon ENVELOPE(-154.000,-154.000,72.500,72.500) Canada Chukchi Shelf ENVELOPE(-169.167,-169.167,70.550,70.550) Makarov Basin ENVELOPE(170.000,170.000,87.000,87.000) Pacific Environmental Research Letters 16 10 104008 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
dissolved inorganic carbon Pacific Winter Water model Arctic Ocean Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
dissolved inorganic carbon Pacific Winter Water model Arctic Ocean Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Gangzhi Chu Xiaofan Luo Zijia Zheng Wei Zhao Hao Wei Causes of increased dissolved inorganic carbon in the subsurface layers in the western shelfbreak and high latitudes basin in the Arctic Pacific sector |
topic_facet |
dissolved inorganic carbon Pacific Winter Water model Arctic Ocean Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
The expansion of dissolved inorganic carbon (DIC)-rich water carried by the Pacific inflow creates a DIC maximum layer and exerts important influences on ocean acidification in the subsurface Arctic Ocean. This study analyzed shifts in the DIC distribution of the subsurface Arctic Ocean during 1998–2015 through hindcast simulation using a three-dimensional ocean-sea ice-biogeochemical model. For this purpose, the study was divided into two time periods (1998–2007 and 2008–2015). The results showed that the lower boundary layer of the Pacific Winter Water, defined as an isopycnal of 27 kg m ^−3 , became deeper by ∼50 m in the central Canada Basin and expanded northward during 2008–2015 relative to 1998–2007. Accordingly, the subsurface DIC maximum layer deepened and expanded northwards into the Makarov Basin at high latitudes around 85° N. During 2008–2015, DIC concentrations, averaged over a 50–250 m water column, increased significantly in the Chukchi-East Siberian Shelfbreak and Makarov Basin. The DIC increase over the shelfbreak is mainly attributable to increased local biological degradation and the transportation of DIC-rich water from the Chukchi Shelf through Barrow Canyon. Estimates of the DIC budget indicated that advection controlled the increase in DIC content in the Makarov Basin during 2008–2015. This is attributed to the shift of the ocean circulation pattern, in which the ocean current along the Chukchi-East Siberian Slope to the Makarov Basin became stronger during 2008–2015, promoting the transport of DIC-rich Pacific Water into the Makarov Basin. |
format |
Article in Journal/Newspaper |
author |
Gangzhi Chu Xiaofan Luo Zijia Zheng Wei Zhao Hao Wei |
author_facet |
Gangzhi Chu Xiaofan Luo Zijia Zheng Wei Zhao Hao Wei |
author_sort |
Gangzhi Chu |
title |
Causes of increased dissolved inorganic carbon in the subsurface layers in the western shelfbreak and high latitudes basin in the Arctic Pacific sector |
title_short |
Causes of increased dissolved inorganic carbon in the subsurface layers in the western shelfbreak and high latitudes basin in the Arctic Pacific sector |
title_full |
Causes of increased dissolved inorganic carbon in the subsurface layers in the western shelfbreak and high latitudes basin in the Arctic Pacific sector |
title_fullStr |
Causes of increased dissolved inorganic carbon in the subsurface layers in the western shelfbreak and high latitudes basin in the Arctic Pacific sector |
title_full_unstemmed |
Causes of increased dissolved inorganic carbon in the subsurface layers in the western shelfbreak and high latitudes basin in the Arctic Pacific sector |
title_sort |
causes of increased dissolved inorganic carbon in the subsurface layers in the western shelfbreak and high latitudes basin in the arctic pacific sector |
publisher |
IOP Publishing |
publishDate |
2021 |
url |
https://doi.org/10.1088/1748-9326/ac2408 https://doaj.org/article/0be895c60b804870a5a688224b0042be |
long_lat |
ENVELOPE(-154.000,-154.000,72.500,72.500) ENVELOPE(-169.167,-169.167,70.550,70.550) ENVELOPE(170.000,170.000,87.000,87.000) |
geographic |
Arctic Arctic Ocean Barrow Canyon Canada Chukchi Shelf Makarov Basin Pacific |
geographic_facet |
Arctic Arctic Ocean Barrow Canyon Canada Chukchi Shelf Makarov Basin Pacific |
genre |
Arctic Arctic Ocean canada basin Chukchi makarov basin Ocean acidification Sea ice |
genre_facet |
Arctic Arctic Ocean canada basin Chukchi makarov basin Ocean acidification Sea ice |
op_source |
Environmental Research Letters, Vol 16, Iss 10, p 104008 (2021) |
op_relation |
https://doi.org/10.1088/1748-9326/ac2408 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/ac2408 1748-9326 https://doaj.org/article/0be895c60b804870a5a688224b0042be |
op_doi |
https://doi.org/10.1088/1748-9326/ac2408 |
container_title |
Environmental Research Letters |
container_volume |
16 |
container_issue |
10 |
container_start_page |
104008 |
_version_ |
1776198327189110784 |