气候变化领域集成服务门户(CCPortal): Seasonal Asymmetry in the Evolution of Surface Ocean pCO2 and pH Thermodynamic Drivers and the Influence on Sea-Air CO2 Flux

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DOI	10.1029/2017GB005855
	Seasonal Asymmetry in the Evolution of Surface Ocean pCO2 and pH Thermodynamic Drivers and the Influence on Sea-Air CO2 Flux
	Fassbender A.J.; Rodgers K.B.; Palevsky H.I.; Sabine C.L.
发表日期	2018
ISSN	0886-6236
EISSN	1944-9224
起始页码	1476
结束页码	1497
卷号	32 期号:10
英文摘要	It has become clear that anthropogenic carbon invasion into the surface ocean drives changes in the seasonal cycles of carbon dioxide partial pressure (pCO2) and pH. However, it is not yet known whether the resulting sea-air CO2 fluxes are symmetric in their seasonal expression. Here we consider a novel application of observational constraints and modeling inferences to test the hypothesis that changes in the ocean's Revelle factor facilitate a seasonally asymmetric response in pCO2 and the sea-air CO2 flux. We use an analytical framework that builds on observed sea surface pCO2 variability for the modern era and incorporates transient dissolved inorganic carbon concentrations from an Earth system model. Our findings reveal asymmetric amplification of pCO2 and pH seasonal cycles by a factor of two (or more) above preindustrial levels under Representative Concentration Pathway 8.5. These changes are significantly larger than observed modes of interannual variability and are relevant to climate feedbacks associated with Revelle factor perturbations. Notably, this response occurs in the absence of changes to the seasonal cycle amplitudes of dissolved inorganic carbon, total alkalinity, salinity, and temperature, indicating that significant alteration of surface pCO2 can occur without modifying the physical or biological ocean state. This result challenges the historical paradigm that if the same amount of carbon and nutrients is entrained and subsequently exported, there is no impact on anthropogenic carbon uptake. Anticipation of seasonal asymmetries in the sea surface pCO2 and CO2 flux response to ocean carbon uptake over the 21st century may have important implications for carbon cycle feedbacks. ©2018. The Authors.
英文关键词	carbon cycle; CO2 fluxes; ocean acidification; Revelle Factor; seasonal cycle
语种	英语
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129788
作者单位	Monterey Bay Aquarium Research Institute, Moss Landing, CA, United States; Center for Climate Physics, Institute for Basic Science, Busan, South Korea; Pusan National University, Busan, South Korea; Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Falmouth, MA, United States; Now at the Department of Geosciences, Wellesley College, Wellesley, MA, United States; Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration, Seattle, WA, United States; Now at the Department of Oceanography, SOEST, University of Hawai'i at Ma̅noa, Honolulu, HI, United States
推荐引用方式 GB/T 7714	Fassbender A.J.,Rodgers K.B.,Palevsky H.I.,et al. Seasonal Asymmetry in the Evolution of Surface Ocean pCO2 and pH Thermodynamic Drivers and the Influence on Sea-Air CO2 Flux[J],2018,32(10).
APA	Fassbender A.J.,Rodgers K.B.,Palevsky H.I.,&Sabine C.L..(2018).Seasonal Asymmetry in the Evolution of Surface Ocean pCO2 and pH Thermodynamic Drivers and the Influence on Sea-Air CO2 Flux.Global Biogeochemical Cycles,32(10).
MLA	Fassbender A.J.,et al."Seasonal Asymmetry in the Evolution of Surface Ocean pCO2 and pH Thermodynamic Drivers and the Influence on Sea-Air CO2 Flux".Global Biogeochemical Cycles 32.10(2018).