Atmospheric turbulence component of the innovation covariance

✍ Scribed by Rod Frehlich

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 168 KB
• Volume: 134
• Category: Article
• ISSN: 0035-9009
• DOI: 10.1002/qj.263

✦ Synopsis

Abstract

The innovation covariance is derived for general atmospheric turbulence conditions and for climatologies of upper‐level turbulence based on aircraft data. Error is defined in terms of the effective spatial filter of the forecast model to produce a consistent definition of measurement error and model error. Calculations of the atmospheric turbulence component (observation sampling‐error covariance) are performed for rawinsonde data and various forecast model resolutions. Significant contributions from the atmospheric turbulence field are produced, especially for the older forecast models. Copyright © 2008 Royal Meteorological Society