DOI: 10.1002/2016GL068605
论文题名: Sensitivity of global ocean heat content from reanalyses to the atmospheric reanalysis forcing: A comparative study
作者: Storto A. ; Yang C. ; Masina S.
刊名: Geophysical Research Letters
ISSN: 0094-9661
EISSN: 1944-9392
出版年: 2016
卷: 43, 期: 10 起始页码: 5261
结束页码: 5270
语种: 英语
英文关键词: data assimilation
; ocean observations
; ocean synthesis
Scopus关键词: Budget control
; Enthalpy
; Atmospheric forcing
; Atmospheric reanalysis
; Comparative studies
; Data assimilation
; Hydrographic profiles
; In-situ observations
; Ocean observations
; Sources of uncertainty
; Oceanography
英文摘要: The global ocean heat content evolution is a key component of the Earth's energy budget and can be consistently determined by ocean reanalyses that assimilate hydrographic profiles. This work investigates the impact of the atmospheric reanalysis forcing through a multiforcing ensemble ocean reanalysis, where the ensemble members are forced by five state-of-the-art atmospheric reanalyses during the meteorological satellite era (1979–2013). Data assimilation leads the ensemble to converge toward robust estimates of ocean warming rates and significantly reduces the spread (1.48 ± 0.18 W/m2, per unit area of the World Ocean); hence, the impact of the atmospheric forcing appears only marginal for the global heat content estimates in both upper and deeper oceans. A sensitivity assessment performed through realistic perturbation of the main sources of uncertainty in ocean reanalyses highlights that bias correction and preprocessing of in situ observations represent the most crucial component of the reanalysis, whose perturbation accounts for up to 60% of the ocean heat content anomaly variability in the pre-Argo period. Although these results may depend on the single reanalysis system used, they reveal useful information for the ocean observation community and for the optimal generation of perturbations in ocean ensemble systems. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84971659133&doi=10.1002%2f2016GL068605&partnerID=40&md5=4ab7b660614ef1546f623eed0a71f218
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10624
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Centro Euro-Mediterraneo sui Cambiamenti Climatici, Bologna, Italy
Recommended Citation:
Storto A.,Yang C.,Masina S.. Sensitivity of global ocean heat content from reanalyses to the atmospheric reanalysis forcing: A comparative study[J]. Geophysical Research Letters,2016-01-01,43(10).