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An assessment of global and regional sea level for years 1993-2007 in a suite of interannual CORE-II simulations
- Source :
- EPIC3Ocean Modelling, Elsevier, 78, pp. 35-89, ISSN: 1463-5003, Ocean Modelling, Ocean Modelling, Elsevier, 2014, 78, pp.35-89. 〈10.1016/j.ocemod.2014.03.004〉, Ocean Modelling, Elsevier, 2014, 78, pp.35-89. ⟨10.1016/j.ocemod.2014.03.004⟩, Ocean Modelling (1463-5003) (Elsevier Sci Ltd), 2014-06, Vol. 78, P. 35-89, Ocean Modelling, 78 . pp. 35-89.
- Publication Year :
- 2014
-
Abstract
- Highlights: • Global mean sea level simulated in interannual CORE simulations. • Regional sea level patterns simulated in interannual CORE simulations. • Theoretical foundation for analysis of global mean sea level and regional patterns. Abstract: We provide an assessment of sea level simulated in a suite of global ocean-sea ice models using the interannual CORE atmospheric state to determine surface ocean boundary buoyancy and momentum fluxes. These CORE-II simulations are compared amongst themselves as well as to observation-based estimates. We focus on the final 15 years of the simulations (1993–2007), as this is a period where the CORE-II atmospheric state is well sampled, and it allows us to compare sea level related fields to both satellite and in situ analyses. The ensemble mean of the CORE-II simulations broadly agree with various global and regional observation-based analyses during this period, though with the global mean thermosteric sea level rise biased low relative to observation-based analyses. The simulations reveal a positive trend in dynamic sea level in the west Pacific and negative trend in the east, with this trend arising from wind shifts and regional changes in upper 700 m ocean heat content. The models also exhibit a thermosteric sea level rise in the subpolar North Atlantic associated with a transition around 1995/1996 of the North Atlantic Oscillation to its negative phase, and the advection of warm subtropical waters into the subpolar gyre. Sea level trends are predominantly associated with steric trends, with thermosteric effects generally far larger than halosteric effects, except in the Arctic and North Atlantic. There is a general anti-correlation between thermosteric and halosteric effects for much of the World Ocean, associated with density compensated changes.
- Subjects :
- Arctic sea ice decline
Atmospheric Science
010504 meteorology & atmospheric sciences
Oceanography
01 natural sciences
CORE global ocean-ice simulations
Ocean gyre
Steric sea level
Computer Science (miscellaneous)
Sea level
14. Life underwater
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography
0105 earth and related environmental sciences
Momentum (technical analysis)
geography
geography.geographical_feature_category
[ SDU.STU.OC ] Sciences of the Universe [physics]/Earth Sciences/Oceanography
010505 oceanography
Advection
Global sea level
Geotechnical Engineering and Engineering Geology
Ocean heat content
13. Climate action
North Atlantic oscillation
Climatology
Environmental science
Thermohaline circulation
Subjects
Details
- Language :
- English
- ISSN :
- 14635003
- Database :
- OpenAIRE
- Journal :
- EPIC3Ocean Modelling, Elsevier, 78, pp. 35-89, ISSN: 1463-5003, Ocean Modelling, Ocean Modelling, Elsevier, 2014, 78, pp.35-89. 〈10.1016/j.ocemod.2014.03.004〉, Ocean Modelling, Elsevier, 2014, 78, pp.35-89. ⟨10.1016/j.ocemod.2014.03.004⟩, Ocean Modelling (1463-5003) (Elsevier Sci Ltd), 2014-06, Vol. 78, P. 35-89, Ocean Modelling, 78 . pp. 35-89.
- Accession number :
- edsair.doi.dedup.....215025fb8b4c5c5c09b186bdd4c5281c
- Full Text :
- https://doi.org/10.1016/j.ocemod.2014.03.004〉