An update on THORPEX-related research in data assimilation and observing strategies

Rabier, F.; Gauthier, P.; Cardinali, C.; Langland, R.; Tsyrulnikov, M.; Lorenc, A.; Steinle, P.; Gelaro, R. et Koizumi, K. (2008). « An update on THORPEX-related research in data assimilation and observing strategies ». Nonlinear Processes in Geophysics, 15(1), pp. 81-94.

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Résumé

The international programme "THORPEX: a World Weather Research Programme" provides a framework in which to tackle the challenge of improving the forecast skill of high-impact weather through international collaboration between academic institutions, operational forecast centres, and users of forecast products. The objectives of the THORPEX Data Assimilation and Observation Strategy Working Group (DAOS-WG) are two-fold. The primary goal is to assess the impact of observations and various targeting methods to provide guidance for observation campaigns and for the configuration of the Global Observing System. The secondary goal is to setup an optimal framework for data assimilation, including aspects such as targeted observations, satellite data, background error covariances and quality control. The Atlantic THORPEX Regional campaign, ATReC, in 2003, has been very successful technically and has provided valuable datasets to test targeting issues. Various data impact experiments have been performed, showing a small but very slightly positive impact of targeted observations. Projects of the DAOS-WG include working on the AMMA field experiment, in the context of IPY and to prepare the future THORPEX-PARC field campaign in the Pacific by comparing sensitivity of the forecasts to observations between several groups.

Type:	Article de revue scientifique
Informations complémentaires:	© Author(s) 2008. This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
Mots-clés ou Sujets:	Covariance analysis, data assimilation, experimental study, quality control, research program, satellite data, weather forecasting
Unité d'appartenance:	Faculté des sciences > Département des sciences de la Terre et de l'atmosphère
Déposé par:	Pierre Gauthier
Date de dépôt:	26 avr. 2016 12:26
Dernière modification:	26 mai 2016 14:15
Adresse URL :	http://archipel.uqam.ca/id/eprint/8289

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