GPPA of GSICS Products [ MSG1 and MSG4 Vs IASI ]

On the 11/19/2018 EUMETSAT requested to assign Op maturity to their MSG-1 and MSG-4 Vs IASI Products. While the MSG-1 product has been in the Demo Phase for many years., recently data was generated to fill in any gaps.

After ensuring consistency in data production and investigating quality checks ( that were shared with the Tim Hewison Author of Products) GCC proceeded applying the classical GPPA with new set of recommendations from EP-19 that are aimed at adding efficiency to the maturity assignment process.

These recommendations are

1. GPPA For Family of Instruments ( Accepted)

It is proposed that ...A correction NRT/RAC product can directly be accepted in the Pre-Op phase if

1. The product is created routinely

2. It follows the GSICS format ( filenaming and metadata )

3. The product is made from family of instruments that already create an existing data that has been accepted in the GSICS via the GPPA

2. R.GCC.20180602.1 GCC to relax the requirement of User Guide forclassical GSICS products GCC

GPPA Checklist for EUMETSAT for MSG 1 Vs IASI Product








1 §I Product Provider Information Product provider


§II.1 Brief Product Description
§II.2 Product Scope within GSICS
§II.3 Product function and performance specifications
§III.1.A.1 Adherence to GSICS file naming standard
§III.1.A.2 Adherence to GSICS file format convention
§III.1.B Preliminary ATBD
2 Submit GPAF and preliminary ATBD
to GCC Deputy for review to GPAT
Product provider t2=2015-09-02
GPAF ( Update the GPAF)

Determine if GPAF filled out correctly.

Decide if product ABTD is adequate. Decide if product within GSICS scope.
GPAT t2+6wk
4 GPAT feedback given to Product provider GCC Director t3+1wk
5 Upload sample file to GSICS data server Product provider
GDWG Chair
6 Determine if sample file follows GSICS conventions GDWG Chair t5+2wk
7 Remediate any GPAF issues according to GPAT feedback Product provider,
GCC Director



Product enters Demonstration Phase

GCC Director



Product Accepted in Demo Phase in GSICS

GCC Director t8+2wk
10 Arrange routine upload of Product to a GSICS data server
Agree on file retention policy

GDWG Chair,
GRWG Chair,
Product provider


Product Routinely updated
11 Notify GSICS users and invite feedback from them GCC Director TH
12 §III.1.B Complete full ATBD - Submit to GCC Director Product provider ATBD Uploaded to the Product Catalog MSG-MSG 1 NRT MSG-1 RAC
§III.1.C Product traceability to standards - Submit to GCC Director
13 Review submitted documents (ATBD and product traceability to standards)

N/A [ Family of Instruments ]
14 Remediate any document issues according to the GPAT and user feedback Product provider [Family of Instruments: Documents are mature ]
15 §III.2.A Radiative transfer models Product provider t8+6m
§III.2.B Cal/val supporting measurements
16 Examine submitted documents
(radiative transfer models and cal/val supporting measurements)
GPAT GPAT Review N/A as we are treating this product as family
17 Collect and disseminate user feedback regarding product's data usability and format GCC Director User Feedback??
18 Remediate any document or data issues according to GPAT and user feedback

Product provider
GCC Director
19 Make consensus decision whether to continue Product acceptance process GPAT t18+2w
20 Notify Executive Panel of status of the Product's acceptance process GCC Director t19+2w
21 §III.3.A Product Quality Documents (Uncertainty and Traceability) Product provider t8+10m
22 Examine the submitted Product Quality Document GPAT t21+1m
23 Remediate any document issues according to GPAT feedback Product provider t22+1m
24 Once all issues are resolved, Product enters Pre-operational Phase GCC Director t8+1y


25 Send notification and GPAT Product recommendations to Exec Panel GCC Director t24+2w
26 Exec Panel review GPAT recommendations and send feedback to GCC Director Exec Panel t25+6w
27 GCC Director notifies Product provider about Executive Panel feedback GCC Director t26+2w
28 §III.2.C Analysis software documentation Product provider t24+3m [N/A Family]
§III.2.D Product version control plan
§III.3.B Operations and distribution plan
§III.3.C Users' Guide
29 Examine submitted documents + Provide feedback
(product version control plan, operations and distribution plan, and user's guide)
GPAT t28+1m
30 Remediate any documentation and overall product issues following Exec Panel and GPAT feedback Product provider t29+1m
31 Review remediation material and decides if requirements are now satisfied.
Send final recommendation to the GCC Director.
GPAT t30+3w


32 GCC Director notifies Exec Panel that product has satisfied all requirements to enter Operational Phase GCC Director t31+1w

Re: MSG-4 SEVIRI Versus IASI-A/-B Products accepted as Pre-Operational


Lawrence E Flynn - NOAA Federal <>

May 29, 2018, 4:26 PM

to Mitch, Kenneth, Ge, pierre.tabary, ashim, kiran, kachi.misako, kaz-kamide, Dohyeong, James, eric.shirley, chunosov_ao, Ксения, Александр, Gregory, Toshiyuki, Philippe, Kurtis, me,, Likun, Tim, Xiuqing.Hu, Peter

Dear EP Members and Group and Subgroup Chairs,

I am happy to announce that MSG4/SEVIRI versus IASI-A/-B IR intercomparison products (near real time corrections) have been accepted as Demonstration GSICS products under the family category extension. We are compiling information to request promotion to Pre-Operational and will be sending that request to the EP for consideration in the near future.


Lawrence Flynn, GCC Director


Tim Hewison of Eumetsat has provided, and the GRWG and GDWG Chairs and the GCC Deputy Director have confirmed, the following information regarding the products:

1. MSG-4 SEVERI belongs to the same family as MSG-2/-3 SEVERI.

2. The ATBD and the User Guide that were submitted for MSG-2/-3 are same as those for this product.

3. The Product (Metadata and variables) are same as the MSG-2/-3. Channels have same names and nominal central wavelengths, but slightly different SRFs and band correction coefficients (alpha and beta). The products will work as inputs to the GSICS plotting tool

4. They are now being continuously generated with the same algorithm and through the same operational processing chain as the MSG-2/-3 products. The products are produced regularly on the server and accessible to the public on the EUMETSAT GSICS Server:

5. They have been validated as part of the initial commissioning and subsequent destorage tests for MSG-4.

The EP gave GCC Director the discretion of acceptance of products in Demonstration Phase – abeyance of the requirement in submission of the documents lies with the GCC Director.

The EP gave GCC Director the discretion of automatic acceptance of products in Demostration Phase for products that fall under the “family category”.

Topic revision: r2 - 20 Nov 2018, ManikBali
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