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N2O dynamics in the western Arctic Ocean during the summer of 2017

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Title
N2O dynamics in the western Arctic Ocean during the summer of 2017
Other Titles
2017 서북극해 하계에 N2O 분포 특성
Authors
Heo, Jang-Mu
Kim, Seong-Su
Kang, Sung-Ho
Yang, Eun Jin
Park, Ki-Tae
Jung, Jinyoung
Cho, Kyoung-Ho
Kim, Ju-Hyoung
Macdonald, Alison M.
Yoon, Joo-Eun
Kim, Hyo-Ryeon
Eom, Sang-Min
Lim, Jae-Hyun
Kim, Il-Nam
Subject
Science & Technology - Other Topics
Keywords
NITROUS-OXIDE EMISSIONSGULF-OF-MEXICOGAS-EXCHANGECHUKCHI SEAWIND-SPEEDWATERMETHANESUBSURFACECOMMUNITYPATTERNS
Issue Date
2021-06-15
Citation
Heo, Jang-Mu, et al. 2021-06-15. "N2O dynamics in the western Arctic Ocean during the summer of 2017". SCIENTIFIC REPORTS, 11(1): 1-12.
Abstract
The western Arctic Ocean (WAO) has experienced increased heat transport into the region, sea-ice reduction, and changes to the WAO nitrous oxide (N2O) cycles from greenhouse gases. We investigated WAO N2O dynamics through an intensive and precise N2O survey during the open-water season of summer 2017. The effects of physical processes (i.e., solubility and advection) were dominant in both the surface (0-50 m) and deep layers (200-2200 m) of the northern Chukchi Sea with an under-saturation of N2O. By contrast, both the surface layer (0-50 m) of the southern Chukchi Sea and the intermediate (50-200 m) layer of the northern Chukchi Sea were significantly influenced by biogeochemically derived N2O production (i.e., through nitrification), with N2O over-saturation. During summer 2017, the southern region acted as a source of atmospheric N2O (mean:+2.3 +/- 2.7 mu mol N2O m(-2) day(-1)), whereas the northern region acted as a sink (mean - 1.3 +/- 1.5 mu mol N2O m(-2) day(-1)). If Arctic environmental changes continue to accelerate and consequently drive the productivity of the Arctic Ocean, the WAO may become a N2O "hot spot", and therefore, a key region requiring continued observations to both understand N2O dynamics and possibly predict their future changes.
URI
https://repository.kopri.re.kr/handle/201206/12994
DOI
http://dx.doi.org/10.1038/s41598-021-92009-1
Type
Article
Station
Araon
Indexed
SCIE
Appears in Collections  
2020-2020, Korea-Arctic Ocean Observing System(K-AOOS) (20-20) / Kang, Sung-Ho (PM20040)
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