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Seasonal to decadal variations of sea surface pCO(2) and sea-air CO2 flux in the equatorial oceans over 1984-2013: A basin-scale comparison of the Pacific and Atlantic Oceans
Wang, Xiujun1,2,3; Murtugudde, Raghu3; Hackert, Eric3; Wang, Jing4; Beauchamp, Jim3
2015-05-01
Source PublicationGLOBAL BIOGEOCHEMICAL CYCLES
Volume29Issue:5Pages:597-609
SubtypeArticle
AbstractThe equatorial Pacific and Atlantic Oceans release significant amount of CO2 each year. Not much attention has been paid to evaluating the similarities and differences between these two basins in terms of temporal variability. Here we employ a basin-scale, fully coupled physical-biogeochemical model to study the spatial and temporal variations in sea surface pCO(2) and air-sea CO2 flux over the period of 1984-2013 in the equatorial Pacific and Atlantic Oceans. The model reproduces the overall spatial and temporal variations in the carbon fields for both basins, including higher values to the south of the equator than to the north, the annual maximum sea surface pCO(2) in boreal spring, and the annual peak in sea-to-air CO2 flux in boreal fall in the upwelling regions. The equatorial Pacific reveals a large interannual variability in sea surface pCO(2), which is associated with the El Nino-Southern Oscillation. As a contrast, there is a strong seasonality but little interannual variability in the carbon fields of the equatorial Atlantic. The former is driven by the variability of dissolved inorganic carbon but the latter by sea surface temperature. Our model estimates an average sea-to-air CO2 flux of 0.5210.204PgCyr(-1) for the tropical Pacific (18 degrees S-18 degrees N, 150 degrees E-90 degrees W), which is in good agreement with the observation-based estimate (0.510.24PgCyr(-1)). On average, sea-to-air CO2 flux is 0.2140.03PgCyr(-1) in the tropical Atlantic (10 degrees S-10 degrees N), which compares favorably with observational estimates.
KeywordSea Surface Pco(2) Sea-air Co2 Flux Interannual Variability The Tropical Pacific Ocean The Tropical Atlantic Ocean
DOI10.1002/2014GB005031
Indexed BySCI
Language英语
WOS IDWOS:000356383700006
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/33084
Collection海洋生物技术研发中心
Affiliation1.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing 100875, Peoples R China
2.Joint Ctr Global Change Studies, Beijing, Peoples R China
3.Univ Maryland, Earth Syst Sci Interdisciplinary Ctr, College Pk, MD 20742 USA
4.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China
Recommended Citation
GB/T 7714
Wang, Xiujun,Murtugudde, Raghu,Hackert, Eric,et al. Seasonal to decadal variations of sea surface pCO(2) and sea-air CO2 flux in the equatorial oceans over 1984-2013: A basin-scale comparison of the Pacific and Atlantic Oceans[J]. GLOBAL BIOGEOCHEMICAL CYCLES,2015,29(5):597-609.
APA Wang, Xiujun,Murtugudde, Raghu,Hackert, Eric,Wang, Jing,&Beauchamp, Jim.(2015).Seasonal to decadal variations of sea surface pCO(2) and sea-air CO2 flux in the equatorial oceans over 1984-2013: A basin-scale comparison of the Pacific and Atlantic Oceans.GLOBAL BIOGEOCHEMICAL CYCLES,29(5),597-609.
MLA Wang, Xiujun,et al."Seasonal to decadal variations of sea surface pCO(2) and sea-air CO2 flux in the equatorial oceans over 1984-2013: A basin-scale comparison of the Pacific and Atlantic Oceans".GLOBAL BIOGEOCHEMICAL CYCLES 29.5(2015):597-609.
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