GSI-Based Four-Dimensional Ensemble–Variational (4DEnsVar) Data Assimilation: Formulation and Single-Resolution Experiments with Real Data for NCEP Global Forecast System

A four-dimensional (4D) ensemble–variational data assimilation (DA) system (4DEnsVar) was developed, building upon the infrastructure of the gridpoint statistical interpolation (GSI)-based hybrid DA system. 4DEnsVar used ensemble perturbations valid at multiple time periods throughout the DA window...

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Veröffentlicht in:	Monthly weather review 2014-09, Vol.142 (9), p.3303-3325
Hauptverfasser:	Wang, Xuguang, Lei, Ting
Format:	Artikel
Sprache:	eng
Schlagworte:	Algorithms Construction Cyclones Data assimilation Data collection Experiments Forecast accuracy Hurricane tracking Hurricane tracks Hurricanes Hybrid systems Interpolation Lead time Localization Mathematical models Meteorology Methods Microbalances Northern Hemisphere Perturbation Perturbation methods Perturbations Satellite data Southern Hemisphere Studies Tangents Tropical cyclones Tropical environments Weather forecasting
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