Enhance seasonal amplitude of atmospheric CO2 by the changing Southern Ocean carbon sink
The enhanced seasonal amplitude of atmospheric CO2 has been viewed so far primarily as a Northern Hemisphere phenomenon. Yet, analyses of atmospheric CO2 records from 49 stations between 1980 and 2018 reveal substan-tial trends and variations in this amplitude globally. While no significant trends c...
Published in: | Science Advances |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
American Association for the Advancement of Science
2022
|
Subjects: | |
Online Access: | https://hdl.handle.net/10371/188993 https://doi.org/10.1126/sciadv.abq0220 |
id |
ftseoulnuniv:oai:s-space.snu.ac.kr:10371/188993 |
---|---|
record_format |
openpolar |
spelling |
ftseoulnuniv:oai:s-space.snu.ac.kr:10371/188993 2024-06-23T07:55:51+00:00 Enhance seasonal amplitude of atmospheric CO2 by the changing Southern Ocean carbon sink Yun, Jeongmin Jeong, Sujong Gruber, Nicolas Gregor, Luke Ho, Chang Hoi Piao, Shilong Ciais, Philippe Schimel, David Kwon, Eun Young Jeong, Sujong Ho, Chang Hoi 2022-12-02 https://hdl.handle.net/10371/188993 https://doi.org/10.1126/sciadv.abq0220 영어 unknown American Association for the Advancement of Science Science Advances, Vol.8 No.41 2375-2548 https://hdl.handle.net/10371/188993 doi:10.1126/sciadv.abq0220 000882137600013 2-s2.0-85139766804 176433 Article ART 2022 ftseoulnuniv https://doi.org/10.1126/sciadv.abq0220 2024-06-05T08:36:51Z The enhanced seasonal amplitude of atmospheric CO2 has been viewed so far primarily as a Northern Hemisphere phenomenon. Yet, analyses of atmospheric CO2 records from 49 stations between 1980 and 2018 reveal substan-tial trends and variations in this amplitude globally. While no significant trends can be discerned before 2000 in most places, strong positive trends emerge after 2000 in the southern high latitudes. Using factorial simulations with an atmospheric transport model and analyses of surface ocean Pco2 observations, we show that the increase is best explained by the onset of increasing seasonality of air-sea CO2 exchange over the Southern Ocean around 2000. Underlying these changes is the long-term ocean acidification trend that tends to enhance the seasonality of the air-sea fluxes, but this trend is modified by the decadal variability of the Southern Ocean carbon sink. The seasonal variations of atmospheric CO2 thus emerge as a sensitive recorder of the variations of the Southern Ocean carbon sink. Y 1 Article in Journal/Newspaper Ocean acidification Southern Ocean Seoul National University: S-Space Southern Ocean Science Advances 8 41 |
institution |
Open Polar |
collection |
Seoul National University: S-Space |
op_collection_id |
ftseoulnuniv |
language |
unknown |
description |
The enhanced seasonal amplitude of atmospheric CO2 has been viewed so far primarily as a Northern Hemisphere phenomenon. Yet, analyses of atmospheric CO2 records from 49 stations between 1980 and 2018 reveal substan-tial trends and variations in this amplitude globally. While no significant trends can be discerned before 2000 in most places, strong positive trends emerge after 2000 in the southern high latitudes. Using factorial simulations with an atmospheric transport model and analyses of surface ocean Pco2 observations, we show that the increase is best explained by the onset of increasing seasonality of air-sea CO2 exchange over the Southern Ocean around 2000. Underlying these changes is the long-term ocean acidification trend that tends to enhance the seasonality of the air-sea fluxes, but this trend is modified by the decadal variability of the Southern Ocean carbon sink. The seasonal variations of atmospheric CO2 thus emerge as a sensitive recorder of the variations of the Southern Ocean carbon sink. Y 1 |
author2 |
Jeong, Sujong Ho, Chang Hoi |
format |
Article in Journal/Newspaper |
author |
Yun, Jeongmin Jeong, Sujong Gruber, Nicolas Gregor, Luke Ho, Chang Hoi Piao, Shilong Ciais, Philippe Schimel, David Kwon, Eun Young |
spellingShingle |
Yun, Jeongmin Jeong, Sujong Gruber, Nicolas Gregor, Luke Ho, Chang Hoi Piao, Shilong Ciais, Philippe Schimel, David Kwon, Eun Young Enhance seasonal amplitude of atmospheric CO2 by the changing Southern Ocean carbon sink |
author_facet |
Yun, Jeongmin Jeong, Sujong Gruber, Nicolas Gregor, Luke Ho, Chang Hoi Piao, Shilong Ciais, Philippe Schimel, David Kwon, Eun Young |
author_sort |
Yun, Jeongmin |
title |
Enhance seasonal amplitude of atmospheric CO2 by the changing Southern Ocean carbon sink |
title_short |
Enhance seasonal amplitude of atmospheric CO2 by the changing Southern Ocean carbon sink |
title_full |
Enhance seasonal amplitude of atmospheric CO2 by the changing Southern Ocean carbon sink |
title_fullStr |
Enhance seasonal amplitude of atmospheric CO2 by the changing Southern Ocean carbon sink |
title_full_unstemmed |
Enhance seasonal amplitude of atmospheric CO2 by the changing Southern Ocean carbon sink |
title_sort |
enhance seasonal amplitude of atmospheric co2 by the changing southern ocean carbon sink |
publisher |
American Association for the Advancement of Science |
publishDate |
2022 |
url |
https://hdl.handle.net/10371/188993 https://doi.org/10.1126/sciadv.abq0220 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Ocean acidification Southern Ocean |
genre_facet |
Ocean acidification Southern Ocean |
op_relation |
Science Advances, Vol.8 No.41 2375-2548 https://hdl.handle.net/10371/188993 doi:10.1126/sciadv.abq0220 000882137600013 2-s2.0-85139766804 176433 |
op_doi |
https://doi.org/10.1126/sciadv.abq0220 |
container_title |
Science Advances |
container_volume |
8 |
container_issue |
41 |
_version_ |
1802648628239532032 |