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Analysis and assimilation

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User’s guide for getting data from BDM (French Data Base of Meteorological data, 2006, in French and English) (Observations)

Wednesday 19 December 2012 par Frank Guillaume

This document mainly deals with : how getting data from the database on SOPRANO system from ARPEGE/ALADIN/AROME cycle 29T2 concrete use of tools such as Oulan (OBSOUL: ASCII files), extraction script of BUFR files, refdata files, ouloutput files, ... A subset of extracted data from BDM (...)

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Use of the 2D structure of GOM-arrays for the assimilation of radar reflectivities in the AROME model at Météo-France, April 2012 (Variational)

Thursday 13 December 2012

Use of the 2D structure of GOM-arrays for the assimilation of radar reflectivities in the AROME model at Météo-France by Eric Wattrelot : A 1D method to get relative humidity retrievals from radar reflectivities : why and how ? Dataflow of the 2D-GOM and specific points linked to radar (...)

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OBSTAT documention (Observations)

Wednesday 4 June 2008 par Paul Poli

Table of contents Abstract History User’s guide This documentation was written by Paul Poli in April 2006 and is regularly updated since then. Abstract The OBSTAT software computes and plots statistics on observations assimilated in the ECMWF or Meteo France (...)

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ODB items used to store GPSRO information in IFS CY33 (February 2008) (Observations)

Wednesday 20 February 2008 par Paul Poli

The present documentation (by Paul Poli) lists the ODB items used to store GPS radio occultation (GPSRO) information in the IFS CY33 system at Météo-France.

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Pre-processing of ZTD observations from GPS stations (Nov 2007) (Observations)

Thursday 8 November 2007 par Paul Poli

The present French documentation (from Paul Poli) describes the pre-processing of zenith total delays (ZTD) observations from ground-based GPS stations. This pre-processing requires in input: GPS ZTD observations as well as a GPS station selection list. The pre-processing as presented here is (...)

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ODB items used to store GPSRO information in IFS CY32 (June 2007) (Observations)

Tuesday 5 June 2007 par Paul Poli

The present documentation (by Paul Poli) lists the ODB items used to store GPS radio occultation (GPSRO) information in the IFS CY32 system at Météo-France.

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Variational diagnotic analysis (2006) (Variational)

Thursday 9 March 2006 par Ludovic Auger

A variational diagnostic analysis tool has been developed for diagnostic purposes. This tool will be the successor of "diagpack" for nowcasting issues. It is inspired by the concept of diagnostic analysis which has been the central concept for the development of diagpack. From the technical (...)

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Preliminary experiments towards the pre-operational ALADIN 3DVar (2005) (Variational)

Thursday 24 February 2005

This report was published by Thibaut Montmerle, Claude Fisher and Loïk Berre on February 2005. It presents the aim, strategy and first results for the implementation of an operational variational data assimilation systelm in the ALADIN/France model. Starting from the experience gathered over (...)

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Optimal interpolation : CANARI (2002) (CANARI)

December 2002

CANARI est the acronym of : Code d’Analyse Nécessaire à Arpege pour ses Rejets et son Initialisation Code for the Analysis Necessary for Arpege for its Rejects and its Initiamization CANARI is a software which performs an optimum interpolation analysis for any variable of the meteorological (...)

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ALADIN documentation / 3DVAR aspects, 2007 updated (Variational)

November 2002

This note gives a detailed description of the algorithmic part, for the benefit of phasing, remote installations and development. A theoretical overview is recalled for completeness with the technical section. A "User’s guide" is added for the general users of 3dvar. Formalism of incremental (...)

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