DOI: 10.1029/2018GB006070
论文题名: Modeling the Recent Changes in the Arctic Ocean CO2 Sink (2006–2013)
作者: Manizza M. ; Menemenlis D. ; Zhang H. ; Miller C.E.
刊名: Global Biogeochemical Cycles
ISSN: 0886-6236
EISSN: 1944-9224
出版年: 2019
卷: 33, 期: 3 语种: 英语
英文关键词: biogeochemistry
; carbon cycle
; carbon dioxide
; climate change
; gas exchange
; primary production
; sea ice
; simulation
; Arctic Ocean
; Chukchi Sea
; Norwegian Sea
学科: Arctic Ocean
; biogeochemistry
; carbon cycle
; climate change
; polar oceans
; sea-ice
中文摘要: The Arctic Ocean (AO) and its associated marginal seas have recently experienced rapid climate and environmental changes, most notably sea-ice area (SIA) loss and warming potentially impacting its uptake of carbon dioxide (CO2). We used the state-of-the-art ECCO2-Darwin coupled ocean-biogeochemistry model to simulate the 2006–2013 period and investigate the impact of changing SIA on the CO2 uptake of the AO. We find that the mean annual CO2 sink of the AO is 153 ± 14 TgC a−1 and the CO2 sink decreased at a rate of 3.6 TgC a−1 even though SIA decreased by 8 × 104 km2 a−1 over the same period. Extreme SIA loss in 2007 resulted in a 185.4 TgC CO2 sink, an increase ∼20% over the 2006–2013 mean. In contrast, extreme SIA loss of 2012 resulted in a CO2 sink of the AO of only 146.3 TgC due to two main factors: (1) increased both wind speed and stratification in the Eastern Siberian Sea absorbing less CO2 and (2) decreased primary production and area of air-sea gas exchange in the Chukchi and Nordic Seas. Our model captures a trend of decreasing CO2 sink in most of the Chukchi Sea during fall but does not show the changes in winter CO2 sink in the Nordic and Barents Seas as previous independent studies have suggested. Our results indicate that future AO-atmosphere CO2 exchange will be determined by complex interplay of SIA and other environmental drivers. ©2019. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160138
Appears in Collections: 气候变化与战略
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作者单位: Geosciences Research Division, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
Recommended Citation:
Manizza M.,Menemenlis D.,Zhang H.,et al. Modeling the Recent Changes in the Arctic Ocean CO2 Sink (2006–2013)[J]. Global Biogeochemical Cycles,2019-01-01,33(3)