Observations : use, screening, cost function, control and monitoring (presentation, 2001)
June 2001
Presentation of Patrick Moll and Elisabeth Gérard during the ALATNET training course on Data Assimilation in Gourdon, 11-22 June 2001.
- Observation : General presentation
- General problematic of data assimilation
- Problems with the available data
- Real time available data
- Production suite
- The process of data assimilation
- Operational suite at Meteo-France
- Summary of the current use of observations at Météo-France
- Conventional observations
- Synops : Details of use
- Surface : Data coverage
- Buoys and Aireps : Details of use
- Aircraft : Data coverage
- Temp : Details of use
- Sonde : Data coverage
- Pilot, Satob, ERS : Details of use
- Satwind : Data coverage
- Satellite observations
- TOVS120, ATOVS, ATOVS120, SSMI
- Number of obs in Arpege
- Problem with observations
- Conventional observations
- Screening of observations
- Sceening Problematic
- Preliminary check of observations
- Background quality control
- Vertical consistency, duplication problem
- Redundancy check
- Thinning of observations
- Thinning of Airep, Satob, TOVS, Satellite Radiances
- Impact of the screening
- The observations in the variational cost function
- General Position
- Variational formulation
- Observation operators
- Interpolations
- Adjoints of the observations operators
- Control and monitoring of the observations
- General principle of data minitoring
- Sources ofmodel and observations errors
- Instrumental errors
- Blacklisting observations
- WMO standard thresholds
- Control of the assimilations
- Exercice : the observations in the variational cost function
titre documents joints
Exercise
Control and monitoring
Variational cost function
Screening
Current use of observations
General presentation
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