气候变化领域集成服务门户(CCPortal): Assessing Eddying (1/12°) Ocean Reanalysis GLORYS12 Using the 14-yr Instrumental Record From 59.5°N Section in the Atlantic

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DOI	10.1029/2020JC016317
	Assessing Eddying (1/12°) Ocean Reanalysis GLORYS12 Using the 14-yr Instrumental Record From 59.5°N Section in the Atlantic
	Verezemskaya P.; Barnier B.; Gulev S.K.; Gladyshev S.; Molines J.-M.; Gladyshev V.; Lellouche J.-M.; Gavrikov A.
发表日期	2021
ISSN	21699275
卷号	126 期号:6
英文摘要	The eddy-resolving (1/12°) global ocean reanalysis GLORYS12 is assessed against 14 years (2002–2015) of independent hydrographic observations collected at 59.5°N in the North Atlantic. Two multi-observations statistical analyses, ISAS-15 and ARMOR-3D, and an eddy-permitting (1/4°) reanalysis, GLORYS025, also contribute to this comparison. The mean thermohaline structure along the 59.5°N section revealed by the observations is well-reproduced by GLORYS12, except for the overflow waters. A good agreement with observations is found for linear trends over the whole period, exhibiting a dipole-like pattern with a cooling/freshening in the main thermocline and a warming/salinization below. However, localized discrepancies with observations suggest the need for improvement in the reanalysis system (especially in the overflows representation and the consistency between the forcing and data assimilation system) and the deep observational array. The reanalysis reliably represents the ocean heat content in the upper 700-m layer but shows significant differences with observations between 700 and 2,000 m. The meridional volume and heat transports across the 59.5°N section are compared for years when ADCP observations were available. The reanalysis does not reproduce the variability observed in the western boundary current but agrees well with observed transports in the other parts of the section. The reanalysis reproduces the major mesoscale eddy features that contribute to the meridional transport and provides the large-scale context of their location. The analysis of time correlation at all measurement points demonstrated that GLORYS12 is the most accurate among the analyzed datasets used in this study to represent and explain the observed ocean characteristics and variability along that section. © 2021. The Authors.
英文关键词	Eddying GLORYS12 reanalysis assessment; hydrographic observations along 59.5°N in the Atlantic; reliable representation of the 0–700 m heat content but flaws in overflow waters; reliable reproduction of major mesoscale eddy features contributing to the meridional transport; reliable reproduction outside the western boundary current
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186275
作者单位	P.P. Shirshov Institute of Oceanology, Russian Academy of Science, Moscow, Russian Federation; Institut des Géosciences de l'Environnement, Université Grenoble Alpes, CNRS, IRD, Grenoble, France; Mercator Ocean International, Ramonville Saint Agne, France
推荐引用方式 GB/T 7714	Verezemskaya P.,Barnier B.,Gulev S.K.,et al. Assessing Eddying (1/12°) Ocean Reanalysis GLORYS12 Using the 14-yr Instrumental Record From 59.5°N Section in the Atlantic[J],2021,126(6).
APA	Verezemskaya P..,Barnier B..,Gulev S.K..,Gladyshev S..,Molines J.-M..,...&Gavrikov A..(2021).Assessing Eddying (1/12°) Ocean Reanalysis GLORYS12 Using the 14-yr Instrumental Record From 59.5°N Section in the Atlantic.Journal of Geophysical Research: Oceans,126(6).
MLA	Verezemskaya P.,et al."Assessing Eddying (1/12°) Ocean Reanalysis GLORYS12 Using the 14-yr Instrumental Record From 59.5°N Section in the Atlantic".Journal of Geophysical Research: Oceans 126.6(2021).