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dc.contributor.author | Pazó, Diego | - |
dc.contributor.author | Carrassi, A. | - |
dc.contributor.author | López, Juan M. | - |
dc.date.accessioned | 2016-11-18T14:12:15Z | - |
dc.date.available | 2016-11-18T14:12:15Z | - |
dc.date.issued | 2016 | - |
dc.identifier | doi: 10.1002/qj.2732 | - |
dc.identifier | e-issn: 1477-870X | - |
dc.identifier | issn: 0035-9009 | - |
dc.identifier.citation | Quarterly Journal of the Royal Meteorological Society 142(696): 1290-1299 (2016) | - |
dc.identifier.uri | http://hdl.handle.net/10261/140459 | - |
dc.description | arXiv:1510.07884v2 | - |
dc.description.abstract | A new nudging method for data assimilation, delay-coordinate nudging, is presented. Delay-coordinate nudging makes explicit use of present and past observations in the formulation of the forcing driving the model evolution at each time step. Numerical experiments with a low-order chaotic system show that the new method systematically outperforms standard nudging in different model and observational scenarios, also when using an unoptimized formulation of the delay-nudging coefficients. A connection between the optimal delay and the dominant Lyapunov exponent of the dynamics is found based on heuristic arguments and is confirmed by the numerical results, providing a guideline for the practical implementation of the algorithm. Delay-coordinate nudging preserves the easiness of implementation, the intuitive functioning and the reduced computational cost of the standard nudging, making it a potential alternative especially in the field of seasonal-to-decadal predictions with large Earth system models that limit the use of more sophisticated data assimilation procedures. | - |
dc.description.sponsorship | We acknowledge support by MINECO (Spain) under project No. FIS2014-59462-P. DP acknowledges support by MINECO (Spain) under the Ramón y Cajal programme. AC was supported by the EU-FP7 project SANGOMA under grant contract 283580. | - |
dc.publisher | John Wiley & Sons | - |
dc.publisher | Royal Meteorological Society (Great Britain) | - |
dc.relation | info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FIS2014-59462-P | - |
dc.relation | info:eu-repo/grantAgreement/EC/FP7/283580 | - |
dc.relation.isversionof | Preprint | - |
dc.rights | openAccess | - |
dc.subject | Synchronization | - |
dc.subject | Nudging | - |
dc.subject | Data assimilation | - |
dc.subject | Delay | - |
dc.title | Data assimilation by delay-coordinate nudging | - |
dc.type | artículo | - |
dc.identifier.doi | 10.1002/qj.2732 | - |
dc.relation.publisherversion | https://doi.org/10.1002/qj.2732 | - |
dc.date.updated | 2016-11-18T14:12:15Z | - |
dc.description.version | Peer Reviewed | - |
dc.language.rfc3066 | eng | - |
dc.contributor.funder | European Commission | - |
dc.contributor.funder | Ministerio de Economía y Competitividad (España) | - |
dc.relation.csic | Sí | - |
dc.identifier.funder | http://dx.doi.org/10.13039/501100000780 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100003329 | es_ES |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.openairetype | artículo | - |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
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nudging.pdf | 466,92 kB | Adobe PDF | Visualizar/Abrir |
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