RMIB GERB Public Documentation

This page allows you to access the public documentation for the GERB project at RMIB. Most of the documents are available for download in the PostScript (*.ps) and the PDF (*.pdf) formats. Some information about postscript viewers are available here .

Content :

User Guide
Management Related Documents
Design and Algorithm Development
Output Products
Documentation after coding
Technical Notes

Date User Guide

23/05/2006 MSG-RMIB-GE-UG
L2 RMIB products user guide
This guide is intended to assist users of the level 2 (L2) products derived from the GERB instrument data.
25/11/2002 C demo files

Date Management Related Documents

24/01/2000 MSG-RMIB-GE-RS-0001
RGP : Requirements
The purpose of this document is to give the requirements which the RMIB GERB Processing (RGP) must fullfill.

01/02/2000 MSG-RMIB-GE-PL-0001
RGP : Project Management Plan
This document gives an overview of the management of the RMIB GERB Processing (RGP) project. This project aims at fullfilling the requirements given in document MSG-RMIB-GE-RS-0001. The documentation related to the project is listed in MSG-RMIB-GE-LS-0001.

16/08/2000 MSG-RMIB-GE-TN-0010
RGP : Workpackages
This document gives a description of the RMIB GERB Processing (RGP) as workpackages and the last version gives the latest update on the work progress of the project.

18/09/2000 MSG-RMIB-GE-LS-0001
RGP : Document List
The purpose of this document is to give an overview of all the internal documentation generated or to be generated at RMIB relative to the GERB processing.

Date Design and Algorithm Development

06/03/2003 MSG-RMIB-GE-TN-0004 Version 1.1
RGP : Overview
The purpose of this document is to give a general overview of the RMIB near real time GERB processing system. It explains why and how the complete processing system is divided into different subsystems and how the data flows between these subsystems.

24/01/2000 MSG-RMIB-GE-TN-0011
RGP : Data products Accuracy
The purpose of this document is to give an estimation of the accuracy of the GERB data products that will be generated by the RMIB GERB Processing (RGP).

29/09/1999 MSG-RMIB-GE-TN-0005
RGP-SP : Spectral Modelling
This document describes the spectral modeling module within the SEVIRI Processing (SP) subsystem of the near real time RMIB GERB Processing (RGP) system. This document is currently not available because under revision

29/09/1999 MSG-RMIB-GE-TN-0007
RGP-SP : Scene Identification
The purpose of this document is to give a detailed overview of the scene identification process that will run at RMIB on the flow of Meteosat or SEVIRI data. In the RGP, the scene identification is needed mainly to select adequate angular dependency model for the radiances to fluxes conversions. This document is currently not available because under revision

01/02/2006 MSG-RMIB-GE-TN-0008
RGP-SP : Angular Modelling
The purpose of this document is to give a detailed overview of the angular dependency models that are used in the RGP. It explains how the unfiltered broadband radiances measured in the direction of the MSG satellite are converted into TOA fluxes. This document is currently not available because under revision

27/01/2000 MSG-RMIB-GE-TN-0006
RGP : GERB processing
The purpose of this document is to give an overview of how the SEVIRI data is corrected by GERB data.

16/08/2000 MSG-RMIB-GE-TN-0009
RGP Data Flow
The purpose of this document is to give an overview of:(i) the data flow between the several processes, (ii) the process management and (iii) the general structure of the global process.

11/10/1999 MSG-RMIB-GE-TN-0003 , for a less outdated see related paper
RGP : Resolution Enhancement
The purpose of this document is to give an overview of the resolution enhancement subsystem of the near real time RMIB GERB Processing (RGP) system.

Date Output products

02/09/2001 MSG-RMIB-GE-IF-0001 (MS-words)
ROLSS ICD
The purpose of this document is to specify all aspects of the interface between the RMIB On Line Short term Services (ROLSS) and GERB L2 users, with respect to data products that will be provided in a timely fashion during the operational lifetime of the GERB 1 instrument. This ICD is one of the two which define the interfaces of the RMIB GERB Ground Segment Processing System.

11/02/2000 MSG-RMIB-GE-IF-0002
RGP : Data Products Description
The purpose of this document is to give a description of the data products that will be provided bt the RMIB to external users. External users include the RAL based GGSPS for the level 2 non real time flux product and real time users for real time flux products.

Date Documentation after coding

28/07/2006 MSG-RMIB-GE-TN-0024
RGP-SP: Data Dictionary.
This document is the data dictionary for the imager processing within the RMIB GERB processing. The document presents the various constant, data, models, climatology ...used within this part of the processing.

Date Technical Notes

20/06/2001 MSG-RMIB-GE-TN-0029
Use of TIGR-3 Atmospheric Profiles as Input for SBDART
This technical note describes how the atmospheric profiles of the TIGR-3 data base (provided by the LMD, Laboratoire de Meteorologie Dynamique) are used as input for the SBDART radiative transfer model.

09/07/2004 MSG-RMIB-GE-TN-0030
Generation of a Data Base of TOA Spectral Radiance Fields
This technical note describes the generation, using the SBDART radiative transfer model, of a large data base of spectral radiance fields at the top of the atmosphere. This data base is of great importance to parameterize some subsystems within the GERB processing at RMIB, for instance the spectral modeling. In particulate, the document present the generation of physically realistic Earth and atmosphere conditions. This document is currently not available because under revision

12/07/2007 MSG-RMIB-GE-TN-0031
Correction of the dispersion in the GERB's detector spectral response curves
This technical note quantifies the errors introduced in the GERB final products due to the dispersion of spectral response (SR) curves between the different GERB detectors. This dispersion is the cause of a dispersion of the detector's filtered radiances for a given observed scene. This document proposes a practical way to reduce the problem introduced by this dispersion for the RMIB GERB processing by a preliminary correction of the detector's radiances before the unfiltering process.

21/01/2003 MSG-RMIB-GE-TN-0035
Direct Unfiltering of GERB Data
This technical note describes the transformation of the GERB SW and LW filtered measurements into unfiltered solar and thermal radiances. The method is called "direct unfiltering" as none spectral information from SEVIRI is needed, in contrario with the operational GERB unfiltering which uses some spectral information from the SEVIRI imager. This technical note provides the laws and parameters for the direct unfiltering of the GERB-2 and GERB-1 with the more recent version of the spectral response curves.

10/09/2003 MSG-RMIB-GE-TN-0036
Meteosat Count versus CERES-TRMM Unfiltered Radiance
A database of colocated and coangular pairs of Meteosat-[5,7] and CERES-TRMM shortwave radiances has been built. From this data base, it is possible to derive simple parameterizations to estimate the broadband unfiltered shortwave radiance at TOA directly from the Meteosat count images. This technical note describes the data base and shows the scatter plots of the pairs Meteosat/CERES data.

13-01-2006 MSG-RMIB-GE-TN-0037
Clear Ocean Correction for SEVIRI NB-to-BB Conversion
This technical note describes a method to correct the SEVIRI NB--to--BB estimation for clear ocean pixel. This correction is implemented in the SEVIRI processing part of the RGP.

22-05-2006 MSG-RMIB-GE-TN-0042 (old)
GERB-2 V998 (Ed.1) ARG Radiances and Fluxes Intercomparison with CERES SSF Data
This technical note presents methodology and results of intercomparisons between the GERB V998 (Ed.1) ARG unfiltered radiances and fluxes and the corresponding quantities from the CERES SSF data. This document has been upadetd recently see hereafter.

18-09-2007 MSG-RMIB-GE-TN-0042
GERB-2 Ed.1 ARG Radiances and Fluxes Intercomparison with CERES SSF Data
This technical note presents methodology and results of intercomparisons between the GERB Ed.1 ARG unfiltered radiances and fluxes and the corresponding quantities from the CERES SSF data.

17-07-2007 MSG-RMIB-GE-TN-0043
Equivalence between the ARG, BARG and HR GERB formats
This technical note shows that the radiances and fluxes provided in the 3 main GERB level 2 formats (i.e. the ARG, BARG and HR formats) are consistent one to the others. That means that equivalent values are obtained when the GERB products are averaged over sufficiently large areas and time interval.

10-03-2008 MSG-RMIB-GE-TN-0044
Impact of the change in SEVIRI radiance definition on the GERB products
This technical note analyzes the effect on the GERB products of the future change of definition of the SEVIRI radiance from spectral to effective.

Return to the RMIB GERB Home Page .

Date	User Guide
23/05/2006	MSG-RMIB-GE-UG L2 RMIB products user guide This guide is intended to assist users of the level 2 (L2) products derived from the GERB instrument data.
25/11/2002	C demo files

Date	Management Related Documents
24/01/2000	MSG-RMIB-GE-RS-0001 RGP : Requirements The purpose of this document is to give the requirements which the RMIB GERB Processing (RGP) must fullfill.
01/02/2000	MSG-RMIB-GE-PL-0001 RGP : Project Management Plan This document gives an overview of the management of the RMIB GERB Processing (RGP) project. This project aims at fullfilling the requirements given in document MSG-RMIB-GE-RS-0001. The documentation related to the project is listed in MSG-RMIB-GE-LS-0001.
16/08/2000	MSG-RMIB-GE-TN-0010 RGP : Workpackages This document gives a description of the RMIB GERB Processing (RGP) as workpackages and the last version gives the latest update on the work progress of the project.
18/09/2000	MSG-RMIB-GE-LS-0001 RGP : Document List The purpose of this document is to give an overview of all the internal documentation generated or to be generated at RMIB relative to the GERB processing.



Date	Design and Algorithm Development
06/03/2003	MSG-RMIB-GE-TN-0004 Version 1.1 RGP : Overview The purpose of this document is to give a general overview of the RMIB near real time GERB processing system. It explains why and how the complete processing system is divided into different subsystems and how the data flows between these subsystems.
24/01/2000	MSG-RMIB-GE-TN-0011 RGP : Data products Accuracy The purpose of this document is to give an estimation of the accuracy of the GERB data products that will be generated by the RMIB GERB Processing (RGP).
29/09/1999	MSG-RMIB-GE-TN-0005 RGP-SP : Spectral Modelling This document describes the spectral modeling module within the SEVIRI Processing (SP) subsystem of the near real time RMIB GERB Processing (RGP) system. This document is currently not available because under revision
29/09/1999	MSG-RMIB-GE-TN-0007 RGP-SP : Scene Identification The purpose of this document is to give a detailed overview of the scene identification process that will run at RMIB on the flow of Meteosat or SEVIRI data. In the RGP, the scene identification is needed mainly to select adequate angular dependency model for the radiances to fluxes conversions. This document is currently not available because under revision
01/02/2006	MSG-RMIB-GE-TN-0008 RGP-SP : Angular Modelling The purpose of this document is to give a detailed overview of the angular dependency models that are used in the RGP. It explains how the unfiltered broadband radiances measured in the direction of the MSG satellite are converted into TOA fluxes. This document is currently not available because under revision
27/01/2000	MSG-RMIB-GE-TN-0006 RGP : GERB processing The purpose of this document is to give an overview of how the SEVIRI data is corrected by GERB data.
16/08/2000	MSG-RMIB-GE-TN-0009 RGP Data Flow The purpose of this document is to give an overview of:(i) the data flow between the several processes, (ii) the process management and (iii) the general structure of the global process.
11/10/1999	MSG-RMIB-GE-TN-0003 , for a less outdated see related paper RGP : Resolution Enhancement The purpose of this document is to give an overview of the resolution enhancement subsystem of the near real time RMIB GERB Processing (RGP) system.

Date	Output products
02/09/2001	MSG-RMIB-GE-IF-0001 (MS-words) ROLSS ICD The purpose of this document is to specify all aspects of the interface between the RMIB On Line Short term Services (ROLSS) and GERB L2 users, with respect to data products that will be provided in a timely fashion during the operational lifetime of the GERB 1 instrument. This ICD is one of the two which define the interfaces of the RMIB GERB Ground Segment Processing System.
11/02/2000	MSG-RMIB-GE-IF-0002 RGP : Data Products Description The purpose of this document is to give a description of the data products that will be provided bt the RMIB to external users. External users include the RAL based GGSPS for the level 2 non real time flux product and real time users for real time flux products.



Date	Documentation after coding
28/07/2006	MSG-RMIB-GE-TN-0024 RGP-SP: Data Dictionary. This document is the data dictionary for the imager processing within the RMIB GERB processing. The document presents the various constant, data, models, climatology ...used within this part of the processing.

Date	Technical Notes
20/06/2001	MSG-RMIB-GE-TN-0029 Use of TIGR-3 Atmospheric Profiles as Input for SBDART This technical note describes how the atmospheric profiles of the TIGR-3 data base (provided by the LMD, Laboratoire de Meteorologie Dynamique) are used as input for the SBDART radiative transfer model.
09/07/2004	MSG-RMIB-GE-TN-0030 Generation of a Data Base of TOA Spectral Radiance Fields This technical note describes the generation, using the SBDART radiative transfer model, of a large data base of spectral radiance fields at the top of the atmosphere. This data base is of great importance to parameterize some subsystems within the GERB processing at RMIB, for instance the spectral modeling. In particulate, the document present the generation of physically realistic Earth and atmosphere conditions. This document is currently not available because under revision
12/07/2007	MSG-RMIB-GE-TN-0031 Correction of the dispersion in the GERB's detector spectral response curves This technical note quantifies the errors introduced in the GERB final products due to the dispersion of spectral response (SR) curves between the different GERB detectors. This dispersion is the cause of a dispersion of the detector's filtered radiances for a given observed scene. This document proposes a practical way to reduce the problem introduced by this dispersion for the RMIB GERB processing by a preliminary correction of the detector's radiances before the unfiltering process.
21/01/2003	MSG-RMIB-GE-TN-0035 Direct Unfiltering of GERB Data This technical note describes the transformation of the GERB SW and LW filtered measurements into unfiltered solar and thermal radiances. The method is called "direct unfiltering" as none spectral information from SEVIRI is needed, in contrario with the operational GERB unfiltering which uses some spectral information from the SEVIRI imager. This technical note provides the laws and parameters for the direct unfiltering of the GERB-2 and GERB-1 with the more recent version of the spectral response curves.
10/09/2003	MSG-RMIB-GE-TN-0036 Meteosat Count versus CERES-TRMM Unfiltered Radiance A database of colocated and coangular pairs of Meteosat-[5,7] and CERES-TRMM shortwave radiances has been built. From this data base, it is possible to derive simple parameterizations to estimate the broadband unfiltered shortwave radiance at TOA directly from the Meteosat count images. This technical note describes the data base and shows the scatter plots of the pairs Meteosat/CERES data.
13-01-2006	MSG-RMIB-GE-TN-0037 Clear Ocean Correction for SEVIRI NB-to-BB Conversion This technical note describes a method to correct the SEVIRI NB--to--BB estimation for clear ocean pixel. This correction is implemented in the SEVIRI processing part of the RGP.
22-05-2006	MSG-RMIB-GE-TN-0042 (old) GERB-2 V998 (Ed.1) ARG Radiances and Fluxes Intercomparison with CERES SSF Data This technical note presents methodology and results of intercomparisons between the GERB V998 (Ed.1) ARG unfiltered radiances and fluxes and the corresponding quantities from the CERES SSF data. This document has been upadetd recently see hereafter.
18-09-2007	MSG-RMIB-GE-TN-0042 GERB-2 Ed.1 ARG Radiances and Fluxes Intercomparison with CERES SSF Data This technical note presents methodology and results of intercomparisons between the GERB Ed.1 ARG unfiltered radiances and fluxes and the corresponding quantities from the CERES SSF data.
17-07-2007	MSG-RMIB-GE-TN-0043 Equivalence between the ARG, BARG and HR GERB formats This technical note shows that the radiances and fluxes provided in the 3 main GERB level 2 formats (i.e. the ARG, BARG and HR formats) are consistent one to the others. That means that equivalent values are obtained when the GERB products are averaged over sufficiently large areas and time interval.
10-03-2008	MSG-RMIB-GE-TN-0044 Impact of the change in SEVIRI radiance definition on the GERB products This technical note analyzes the effect on the GERB products of the future change of definition of the SEVIRI radiance from spectral to effective.