# \#openifs-initial-data **URL:** https://forum.ecmwf.int/tag/openifs-initial-data/125.md [Latest](https://forum.ecmwf.int/latest.md) · [Categories](https://forum.ecmwf.int/categories.md) · [Tags](https://forum.ecmwf.int/tags.md) --- ## [Data licensing change for some OpenIFS Data Hub products](https://forum.ecmwf.int/t/data-licensing-change-for-some-openifs-data-hub-products/13468)
**Author:** [@Marcus\_Koehler](https://forum.ecmwf.int/u/Marcus_Koehler)\ **Replies:** 4\ **Last updated:** [28 September 2026 09:03 UTC](https://forum.ecmwf.int/t/data-licensing-change-for-some-openifs-data-hub-products/13468 "2026-09-28T09:03:34Z")
Hi Data Hub users, The OpenIFS Data Hub makes use of Copernicus data products for some of the data it generates (e.g. experiment data based on ERA5 reanalyses). We would like to notify our users about a forthcoming cha… --- ## [New release: Single-column model experiment data now available from the Data Hub](https://forum.ecmwf.int/t/new-release-single-column-model-experiment-data-now-available-from-the-data-hub/13957)
**Author:** [@Marcus\_Koehler](https://forum.ecmwf.int/u/Marcus_Koehler)\ **Replies:** 0\ **Last updated:** [6 August 2025 15:58 UTC](https://forum.ecmwf.int/t/new-release-single-column-model-experiment-data-now-available-from-the-data-hub/13957 "2025-08-06T15:58:31Z")
We are pleased to announce that a new version of the OpenIFS Data Hub has been released on 06 August 2025. This new release now also offers initial experiment and forcing data for the OpenIFS single-column model. The s… --- ## [What is the current status of the Data Hub?](https://forum.ecmwf.int/t/what-is-the-current-status-of-the-data-hub/12161)
**Author:** [@Marcus\_Koehler](https://forum.ecmwf.int/u/Marcus_Koehler)\ **Replies:** 0\ **Last updated:** [28 August 2024 12:45 UTC](https://forum.ecmwf.int/t/what-is-the-current-status-of-the-data-hub/12161 "2024-08-28T12:45:46Z")
This sort of information is available on the Data Hub documentation page, found here: OpenIFS Data Hub. For planned downtimes the box under the heading "Latest Updates" will contain information about when the Data Hub b… --- ## [Perturbing the initial state for ensemble runs](https://forum.ecmwf.int/t/perturbing-the-initial-state-for-ensemble-runs/12110)
**Author:** [@Abhishek\_Savita](https://forum.ecmwf.int/u/Abhishek_Savita)\ **Replies:** 3\ **Last updated:** [10 May 2023 09:11 UTC](https://forum.ecmwf.int/t/perturbing-the-initial-state-for-ensemble-runs/12110 "2023-05-10T09:11:08Z")
perturb: 1 ensemble\_id: 1 What will happen if somebody use perturb = 2 or 3 instead of 1? any suggestion much appreciated --- ## [Error reading the CL file for a 42 year OpenIFS run](https://forum.ecmwf.int/t/error-reading-the-cl-file-for-a-42-year-openifs-run/12146)
**Author:** [@Daniel\_Koehler](https://forum.ecmwf.int/u/Daniel_Koehler)\ **Replies:** 0\ **Last updated:** [17 February 2023 11:30 UTC](https://forum.ecmwf.int/t/error-reading-the-cl-file-for-a-42-year-openifs-run/12146 "2023-02-17T11:30:13Z")
I am running OpenIFS Cy43r3v2 at Tl255L91 with a 30 minute time step. I have an initial and boundary conditions file with starts on the 1.01.2000 and spans 42 years. When running OpenIFS the checking of the CL file fail… --- ## [OpenIFS: Editing ICMCLhif1INIT files with Eccodes tools](https://forum.ecmwf.int/t/openifs-editing-icmclhif1init-files-with-eccodes-tools/12177)
**Author:** [@Daniel\_Koehler98](https://forum.ecmwf.int/u/Daniel_Koehler98)\ **Replies:** 0\ **Last updated:** [6 February 2023 19:51 UTC](https://forum.ecmwf.int/t/openifs-editing-icmclhif1init-files-with-eccodes-tools/12177 "2023-02-06T19:51:09Z")
I am looking into editing the stl1 and ci values in the ICMCLhif1INIT files. When I split and remerge the file with eccodes like the following: grib\_copy ICMCLhif1INIT '\[shortName\]\_out' grib\_copy -B "dataDate asc" \*\_o… --- ## [How to creating initial file (ICMSH\* and ISMGG\*)?](https://forum.ecmwf.int/t/how-to-creating-initial-file-icmsh-and-ismgg/12193)
**Author:** [@Zhenqian\_Wang](https://forum.ecmwf.int/u/Zhenqian_Wang)\ **Replies:** 2\ **Last updated:** [9 June 2022 11:06 UTC](https://forum.ecmwf.int/t/how-to-creating-initial-file-icmsh-and-ismgg/12193 "2022-06-09T11:06:59Z")
Hi , I'm wondering whether if i can creating initial file(ICMSH${expid}INIT) from existing NetCDF files? I would like to design some sensitivity experiments, so i wont to create the initial file by NetCDF, i have tried… --- ## [Model complexity / number of files for restart](https://forum.ecmwf.int/t/model-complexity-number-of-files-for-restart/12138)
**Author:** [@Jan\_Streffing](https://forum.ecmwf.int/u/Jan_Streffing)\ **Replies:** 3\ **Last updated:** [3 April 2019 13:12 UTC](https://forum.ecmwf.int/t/model-complexity-number-of-files-for-restart/12138 "2019-04-03T13:12:15Z")
Hello, I would like to know how many fields are needed to restart OpenIFS / what's the number of prognostic variables? Since the restart fields are stored in binary files it's not easy to inspect. I tried to calculate i…