FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2080348891> ?p ?o ?g. }

• W2080348891 endingPage "449" @default.
• W2080348891 startingPage "430" @default.
• W2080348891 abstract "Abstract The new operational prototype of Mercator (french Global Ocean Data Assimilation Experiment contribution) is composed of a North Atlantic primitive equation ocean model OPA (Ocean Parallel Algorithm between 20°S and 70°N, [Madec, G., P. Delecluse, M. Imbard and C. Levy (1998). OPA8.1 ocean general circulation model reference manuel. Notes du pole de modelisation IPSL. n°11: 91p]) and of a multivariate and multidata assimilation scheme [De Mey, P. and M. Benkiran (2002). “A multivariate reduced-order optimal interpolation method and its application in Mediterranean basin-scale circulation.” Ocean Forecasting : Conceptual basis and application, Pinardi, N., Springer Verlag.] This system has already given some significant improvements from previous Mercator configurations (M. Benkiran, personal communication). However some biases on ocean state still remain in the tropics where the reduced-order optimal interpolation scheme is suspected to be ill-parameted in the model forecast error. Indeed the guess error covariance matrix is decomposed into an error variance value and a spatio-temporal correlation function which are assumed to have some “good” properties (spatial homogeneity of the correlation function, constant ratio between signal and error variance). This study shows how we can use ensemble methods to validate these assumptions. We can see that the correlation function can reach negative values locally, mostly in regions of high variability contradictory with the homogeneous hypothesis. The reduced space used in the operational configuration is based on the signal seasonal Empirical Orthogonal Functions (EOFs). An empirical relationship between signal and error variance has been set and the correlation function is the same on every dimension of the reduced space. By projection of the estimated guess error variance onto the reduced space, we find a repartition of this quantity quite different to what was set in the system. The error statistics is found to be inhomogeneous compared to hypothesis made in the assimilation scheme. These two new parameters tested separately in the assimilation scheme gives significant improvements of the forecast and analysis results. This is particularly obvious in the tropics. But relationship between signal and error statistics (as assumed in the optimal interpolation) is found to be complex." @default.
• W2080348891 created "2016-06-24" @default.
• W2080348891 creator A5033962384 @default.
• W2080348891 creator A5084414082 @default.
• W2080348891 date "2007-03-01" @default.
• W2080348891 modified "2023-09-27" @default.
• W2080348891 title "Multivariate assimilation in MERCATOR project: New statistical parameters from forecast error estimation" @default.
• W2080348891 cites W176259088 @default.
• W2080348891 cites W180591066 @default.
• W2080348891 cites W185391259 @default.
• W2080348891 cites W1965763981 @default.
• W2080348891 cites W1967490230 @default.
• W2080348891 cites W1986446940 @default.
• W2080348891 cites W2006642656 @default.
• W2080348891 cites W2017727275 @default.
• W2080348891 cites W2020507039 @default.
• W2080348891 cites W2032344048 @default.
• W2080348891 cites W2049741199 @default.
• W2080348891 cites W2053077830 @default.
• W2080348891 cites W2059119796 @default.
• W2080348891 cites W2087607864 @default.
• W2080348891 cites W2094702386 @default.
• W2080348891 cites W2101317557 @default.
• W2080348891 cites W2105934661 @default.
• W2080348891 cites W2157098139 @default.
• W2080348891 cites W2173242407 @default.
• W2080348891 cites W2174260281 @default.
• W2080348891 cites W2614500201 @default.
• W2080348891 cites W2151417221 @default.
• W2080348891 cites W2544434409 @default.
• W2080348891 doi "https://doi.org/10.1016/j.jmarsys.2005.11.020" @default.
• W2080348891 hasPublicationYear "2007" @default.
• W2080348891 type Work @default.
• W2080348891 sameAs 2080348891 @default.
• W2080348891 citedByCount "4" @default.
• W2080348891 countsByYear W20803488912013 @default.
• W2080348891 crossrefType "journal-article" @default.
• W2080348891 hasAuthorship W2080348891A5033962384 @default.
• W2080348891 hasAuthorship W2080348891A5084414082 @default.
• W2080348891 hasConcept C105795698 @default.
• W2080348891 hasConcept C127313418 @default.
• W2080348891 hasConcept C149782125 @default.
• W2080348891 hasConcept C153294291 @default.
• W2080348891 hasConcept C161584116 @default.
• W2080348891 hasConcept C162324750 @default.
• W2080348891 hasConcept C174303752 @default.
• W2080348891 hasConcept C187736073 @default.
• W2080348891 hasConcept C205649164 @default.
• W2080348891 hasConcept C24552861 @default.
• W2080348891 hasConcept C33923547 @default.
• W2080348891 hasConcept C39432304 @default.
• W2080348891 hasConcept C49204034 @default.
• W2080348891 hasConcept C96250715 @default.
• W2080348891 hasConceptScore W2080348891C105795698 @default.
• W2080348891 hasConceptScore W2080348891C127313418 @default.
• W2080348891 hasConceptScore W2080348891C149782125 @default.
• W2080348891 hasConceptScore W2080348891C153294291 @default.
• W2080348891 hasConceptScore W2080348891C161584116 @default.
• W2080348891 hasConceptScore W2080348891C162324750 @default.
• W2080348891 hasConceptScore W2080348891C174303752 @default.
• W2080348891 hasConceptScore W2080348891C187736073 @default.
• W2080348891 hasConceptScore W2080348891C205649164 @default.
• W2080348891 hasConceptScore W2080348891C24552861 @default.
• W2080348891 hasConceptScore W2080348891C33923547 @default.
• W2080348891 hasConceptScore W2080348891C39432304 @default.
• W2080348891 hasConceptScore W2080348891C49204034 @default.
• W2080348891 hasConceptScore W2080348891C96250715 @default.
• W2080348891 hasIssue "1-4" @default.
• W2080348891 hasLocation W20803488911 @default.
• W2080348891 hasOpenAccess W2080348891 @default.
• W2080348891 hasPrimaryLocation W20803488911 @default.
• W2080348891 hasRelatedWork W1593508673 @default.
• W2080348891 hasRelatedWork W1980905932 @default.
• W2080348891 hasRelatedWork W2024801457 @default.
• W2080348891 hasRelatedWork W2040248213 @default.
• W2080348891 hasRelatedWork W2042084217 @default.
• W2080348891 hasRelatedWork W2051221975 @default.
• W2080348891 hasRelatedWork W2160656679 @default.
• W2080348891 hasRelatedWork W3124191225 @default.
• W2080348891 hasRelatedWork W3194191596 @default.
• W2080348891 hasRelatedWork W4255213289 @default.
• W2080348891 hasVolume "65" @default.
• W2080348891 isParatext "false" @default.
• W2080348891 isRetracted "false" @default.
• W2080348891 magId "2080348891" @default.
• W2080348891 workType "article" @default.