气候变化领域集成服务门户(CCPortal): Quantification of Chaotic Intrinsic Variability of Sea-Air CO2 Fluxes at Interannual Timescales

CCPortal

DOI	10.1029/2020GL088304
	Quantification of Chaotic Intrinsic Variability of Sea-Air CO2 Fluxes at Interannual Timescales
	Gehlen M.; Berthet S.; Séférian R.; Ethé C.; Penduff T.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:22
英文摘要	Chaotic intrinsic variability (CIV) emerges spontaneously from nonlinear ocean dynamics even without any atmospheric variability. Eddy-permitting numerical simulations suggest that CIV is a significant contributor to the interannual to decadal variability of physical properties. Here we show from an ensemble of global ocean eddy-permitting simulations that large-scale interannual CIV propagates from physical properties to sea-air CO2 fluxes in areas of high mesoscale eddy activity (e.g., Southern Ocean and western boundary currents). In these regions and at scales larger than 500 km (~5°), CIV contributes significantly to the interannual variability of sea-air CO2 fluxes. Between 35°S and 45°S (midlatitude Southern Ocean), CIV amounts to 23.76 TgC yr−1 or one half of the atmospherically forced variability. Locally, its contribution to the total interannual variance of sea-air CO2 fluxes exceeds 76%. Outside eddy-active regions its contribution to total interannual variability is below 16%. ©2020. The Authors.
英文关键词	Carbon dioxide; Physical properties; Active regions; Atmospheric variability; Decadal variability; Forced variability; Interannual variability; Intrinsic variabilities; Mesoscale eddy activity; Western boundary currents; Ocean currents; air-sea interaction; annual variation; carbon dioxide; decadal variation; eddy covariance; marine atmosphere; mesoscale eddy; western boundary current; Southern Ocean
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169447
作者单位	Laboratoire des Sciences du Climat et de l'Environnement, Institut Pierre Simon Laplace, Gif-Sur-Yvette, France; CNRM, Météo-France, Toulouse, France; Institut Pierre Simon Laplace, Paris, France; Université Grenoble Alpes, CNRS, IRD, Grenoble-INP, IGE, Grenoble, France
推荐引用方式 GB/T 7714	Gehlen M.,Berthet S.,Séférian R.,et al. Quantification of Chaotic Intrinsic Variability of Sea-Air CO2 Fluxes at Interannual Timescales[J],2020,47(22).
APA	Gehlen M.,Berthet S.,Séférian R.,Ethé C.,&Penduff T..(2020).Quantification of Chaotic Intrinsic Variability of Sea-Air CO2 Fluxes at Interannual Timescales.Geophysical Research Letters,47(22).
MLA	Gehlen M.,et al."Quantification of Chaotic Intrinsic Variability of Sea-Air CO2 Fluxes at Interannual Timescales".Geophysical Research Letters 47.22(2020).