NRT Notification Detail

Questionnaire on ROM SAF Offline, NTC and ICDR products
DATE:   2025-09-10 14:51
TYPE:   DATA
Description
Dear ROM SAF Data User

Issued: 2025-09-10 14:51 UTC

We are preparing the proposal for the activities for the ROM SAF for the next five years.
And related to this, we are trying to get an overview of the usage of ROM SAF products
available from the Product Archive: https://rom-saf.eumetsat.int/product_archive.php

Specifically, we are trying to gather information about the usage of Metop Offline and ICDR
(Interim Climate Data Record) products, and Sentinel-6 Non-Time Critical (NTC) products.
The Metop ICDR product extends the Metop CDR (Climate Data Record, obtained from reprocessing)
by using the same code to generate the ICDR such that the combined CDR+ICDR data record is
a homogeneous data record suitable for climate applications. Metop Offline products and
Sentinel-6 NTC products may evolve over time to include new science improvements and
minor bug-fixes, whereas the algorithms behind ICDR products do not change until the next
CDR is released. One thing we would like to get information about is whether Metop ICDR
products would cover the needs for users currently using Metop Offline products.

We hope you can find time to answer a few questions (see below).
Please just reply to this email, and feel free to provide any comments you like.

Your input is appreciated and will be important for planning of future ROM SAF products and services.

Thank you in advance
ROM SAF Team

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Questionnaire on ROM SAF Offline, NTC and ICDR products

1) Do you use Metop Offline products (profiles, grids)?
1.1) if yes: which variables are used and for what application(s) are they used?
1.2) if yes: please describe your requirements related to timeliness, and other relevant parameters
1.3) if yes: please describe if you think the Metop ICDR product could be used for your application instead of the Metop Offline product


2) Do you use Metop ICDR products (profiles, grids)?
2.1) if yes: which variables are used and for what application(s) are they used?
2.2) if yes: please describe your requirements related to timeliness, and other relevant parameters


3) Do you use Sentinel-6 NTC products (profiles, grids)?
3.1) if yes: which variables are used and for what application(s) are they used?
3.2) if yes: please describe your requirements related to timeliness, and other relevant parameters
3.3) if yes: please describe if you think that a future Sentinel-6 ICDR (and a corresponding reprocessed Sentinel-6 CDR) could be used instead of the Sentinel-6 NTC product


4) Feel free to provide any additional comments and/or suggestions


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Background information about the different product types

Offline profile and gridded products from Metop:
- Bending angle, refractivity, dry temperature, temperature, humidity, pressure, surface pressure, tropopause height
- Gridded version of all the Metop profile products, including dry pressure and dry geopotential height
- The profile products are provided monthly, about the 20th in the following month.
- The gridded products are provided monthly, about the 25th in the following month.
https://rom-saf.eumetsat.int/pub/ofl/README

ICDR profile and gridded products from Metop:
- The ICDR product type encompasses the same variables as the Metop Offline profile and gridded products.
- The ICDR is provided monthly, about the 20th - 25th in the following month.
https://rom-saf.eumetsat.int/pub/cdr/v1.0/README
https://rom-saf.eumetsat.int/pub/icdr/v1-series/README

NTC profile and gridded products from Sentinel-6:
- Refractivity, dry temperature, temperature, humidity, pressure, surface pressure, tropopause height
- Gridded version of all the Metop profile products, including bending angle, dry pressure and dry geopotential height
- The profile products are provided regularly, about 20-25 days after measurement.
- The gridded products are provided monthly, about the 25th - 30th in the following month.
https://rom-saf.eumetsat.int/pub/ntc/README

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