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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
  • 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

10 November 2005
info document : GZ
515.3 kb

Control and monitoring

10 November 2005
info document : GZ
569.7 kb

Variational cost function

10 November 2005
info document : GZ
518.6 kb

Screening

10 November 2005
info document : GZ
1.3 Mb

Current use of observations

10 November 2005
info document : GZ
1.4 Mb

General presentation

10 November 2005
info document : GZ
504.5 kb

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