Sampling properties and spatial filtering of ensemble background-error length-scales
✍ Scribed by Laure Raynaud; Olivier Pannekoucke
- Book ID
- 115561787
- Publisher
- John Wiley and Sons
- Year
- 2012
- Tongue
- English
- Weight
- 196 KB
- Volume
- 139
- Category
- Article
- ISSN
- 0035-9009
- DOI
- 10.1002/qj.1999
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## Abstract This article presents different formulae to estimate correlation length‐scales, and an evaluation of their qualities for practical diagnostic applications. In particular, two new and simple formulae are introduced, which only require the computation of correlation with a single point fo
## Abstract It is common to compute background‐error variances from an ensemble of forecasts, in order to calculate either climatological or flow‐dependent estimates. However, the finite size of the ensemble induces a sampling noise, which degrades the accuracy of the variance estimation. An ideali