DOI: 10.1002/2014GB005075
Scopus记录号: 2-s2.0-84939251344
论文题名: Transports and budgets of anthropogenic CO<inf>2</inf> in the tropical North Atlantic in 1992-1993 and 2010-2011
作者: Zunino P ; , Pérez F ; F ; , Fajar N ; M ; , Guallart E ; F ; , Ríos A ; F ; , Pelegrí J ; L ; , Hernández-Guerra A
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2015
卷: 29, 期: 7 起始页码: 1075
结束页码: 1091
语种: 英语
英文关键词: air-sea fluxes
; anthropogenic CO2
; changes in circulation
; storage rate
; transport
; tropical North Atlantic
Scopus关键词: accumulation rate
; air-sea interaction
; anthropogenic source
; carbon budget
; carbon dioxide
; gas transport
; North Atlantic Deep Water
; thermocline
; tropical environment
; western boundary current
; Atlantic Ocean
; Atlantic Ocean (North)
; Florida Current
英文摘要: The meridional transport of anthropogenic CO2 (Cant ) in the tropical North Atlantic (TNA) is investigated using data from transoceanic sections along 7.5°N and 24.5°N, carried out in the early 1990s and 2010s. The net Cant transport across both sections is northward. At 7.5°N, this transport increased from 315 ± 47 kmol s-1 in 1993 to 493 ± 51 kmol s-1 in 2010; similarly, across 24.5°N it grew from 530 ± 46 kmol s-1 in 1992 to 662 ± 49 kmol s-1 in 2011. These changes result from modifications in the intermediate and deep circulation patterns, as well as from Cant increase within the thermocline waters. In deep waters, lateral advection causes a net Cant input of 112 ± 60 kmol s-1 (234 ± 65 kmol s-1) in 1992-1993 (2010-2011); within these deep waters, the storage rate of Cant is not statistically different from the net Cant input, 139 ± 21 kmol s-1 (188 ± 21 kmol s-1) in 1992-1993 (2010-2011). The Cant increase in deep waters is due to the large injection of Cant across the 24.5°N by the Deep Western Boundary Current and the northward recirculation of North Atlantic Deep Water along 7.5°N. In contrast, a large net Cant output in the upper layer is caused by the Florida Current. Despite this net Cant output, the Cant accumulates at a rate of 215 ± 24 kmol s-1 (291 ± 24 kmol s-1) referenced to year 1993 (2010). From the two Cant budgets, we infer a Cant air-sea flux of 0.23 ± 0.02 Pg yr-1in the TNA, much larger than previous estimates. Key Points Transport of Cant at 7.5°N and 24.5°N Atlantic section from in situ data Cant storage rates in the tropical North Atlantic Cant air-sea fluxes in the tropical North Atlantic. © 2015 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/77962
Appears in Collections: 气候变化事实与影响
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作者单位: Instituto de Oceanografía y Cambio Global, Universidad de Las Palmas de Gran Canaria, Las Palmas, Spain; Instituto de Investigaciõns Mariñas, CSIC, Vigo, Spain; Institut de Ciències Del Mar, CSIC, Barcelona, Spain
Recommended Citation:
Zunino P,, Pérez F,F,et al. Transports and budgets of anthropogenic CO<inf>2</inf> in the tropical North Atlantic in 1992-1993 and 2010-2011[J]. Global Biogeochemical Cycles,2015-01-01,29(7)