# \#ecv\_atmospheric\_composition **URL:** https://forum.ecmwf.int/tag/ecv-atmospheric-composition/81.md [Latest](https://forum.ecmwf.int/latest.md) · [Categories](https://forum.ecmwf.int/categories.md) · [Tags](https://forum.ecmwf.int/tags.md) --- ## [📢 Third Ozone Climate Change Initiative (CCI) User Workshop](https://forum.ecmwf.int/t/third-ozone-climate-change-initiative-cci-user-workshop/15174)
**Author:** [@Michela](https://forum.ecmwf.int/u/Michela)\ **Replies:** 0\ **Last updated:** [7 August 2026 15:02 UTC](https://forum.ecmwf.int/t/third-ozone-climate-change-initiative-cci-user-workshop/15174 "2026-08-07T15:02:14Z")
Event date: 10-11 November 2026 Attendance: Virtual workshop (MS Teams) Abstract submission: 30-09-2026 12 UTC Registration deadline for attendance: 31-10-2026 12 UTC We are excited to announce the Third Ozone… --- ## [Ozone Level 4 data for 2025 is missing](https://forum.ecmwf.int/t/ozone-level-4-data-for-2025-is-missing/14847)
**Author:** [@Dimitry\_Pokhotelov](https://forum.ecmwf.int/u/Dimitry_Pokhotelov)\ **Replies:** 0\ **Last updated:** [7 April 2026 10:04 UTC](https://forum.ecmwf.int/t/ozone-level-4-data-for-2025-is-missing/14847 "2026-04-07T10:04:38Z")
Level 4 ozone data (vertical ozone abundance in Dobson units) are available for all years (1970-2024) but the data for year 2025 are missing. The database says that the 2025 data are also available but the interface does… --- ## [Carbon dioxide data from 2002 to present derived from satellite observations](https://forum.ecmwf.int/t/carbon-dioxide-data-from-2002-to-present-derived-from-satellite-observations/10874)
**Author:** [@Nisreen\_Mahmoud](https://forum.ecmwf.int/u/Nisreen_Mahmoud)\ **Replies:** 1\ **Last updated:** [20 January 2025 09:03 UTC](https://forum.ecmwf.int/t/carbon-dioxide-data-from-2002-to-present-derived-from-satellite-observations/10874 "2025-01-20T09:03:41Z")
what is the latest updated year? --- ## [Aerosol properties gridded data from 1995 to present derived from satellite observations - Data issue](https://forum.ecmwf.int/t/aerosol-properties-gridded-data-from-1995-to-present-derived-from-satellite-observations-data-issue/1666)
**Author:** [@Dinand\_Schepers](https://forum.ecmwf.int/u/Dinand_Schepers)\ **Replies:** 0\ **Last updated:** [2 March 2023 10:17 UTC](https://forum.ecmwf.int/t/aerosol-properties-gridded-data-from-1995-to-present-derived-from-satellite-observations-data-issue/1666 "2023-03-02T10:17:40Z")
Users are made aware of the following data issue that led to the deprication of Aerosol extinction coefficient data record derived from GOMOS on ENVISAT, version v5.00. It has been discovered that erroneous input data… --- ## [Handling the MERGED and EMMA v3 co2 data?](https://forum.ecmwf.int/t/handling-the-merged-and-emma-v3-co2-data/912)
**Author:** [@shubhojyoti\_das](https://forum.ecmwf.int/u/shubhojyoti_das)\ **Replies:** 0\ **Last updated:** [28 August 2021 19:15 UTC](https://forum.ecmwf.int/t/handling-the-merged-and-emma-v3-co2-data/912 "2021-08-28T19:15:07Z")
I have been trying to work on the above data set. The Level 2 data is not in gridded format. So, I converted them into 2 \* 2 grid boxes. However, when I am trying to plot the monthly data over the Indian region a major p… --- ## [Recent changes with the satellite Ozone data in the Climate Data Store](https://forum.ecmwf.int/t/recent-changes-with-the-satellite-ozone-data-in-the-climate-data-store/1445)
**Author:** [@Anabelle](https://forum.ecmwf.int/u/Anabelle)\ **Replies:** 0\ **Last updated:** [15 January 2021 14:20 UTC](https://forum.ecmwf.int/t/recent-changes-with-the-satellite-ozone-data-in-the-climate-data-store/1445 "2021-01-15T14:20:45Z")
Some changes were recently made to the presentation and content of satellite Ozone data in the Climate Data Store (CDS). In response to users feedback, the layout and clarity of the satellite Ozone data from the Climate… --- ## [Access to Carbon dioxide data on the CDS restored](https://forum.ecmwf.int/t/access-to-carbon-dioxide-data-on-the-cds-restored/1376)
**Author:** [@Anabelle](https://forum.ecmwf.int/u/Anabelle)\ **Replies:** 0\ **Last updated:** [11 September 2020 10:43 UTC](https://forum.ecmwf.int/t/access-to-carbon-dioxide-data-on-the-cds-restored/1376 "2020-09-11T10:43:34Z")
On 11th September 2020, we announced that due to technical difficulties, access to the Carbon dioxide data from 2002 to present derived from satellite observations data on the Climate Data Store (CDS) was temporarily dis… --- ## [Downloading the data from "Carbon dioxide data from 2002 to present derived from satellite sensors"](https://forum.ecmwf.int/t/downloading-the-data-from-carbon-dioxide-data-from-2002-to-present-derived-from-satellite-sensors/1246)
**Author:** [@Natalia\_Odnoletkova](https://forum.ecmwf.int/u/Natalia_Odnoletkova)\ **Replies:** 3\ **Last updated:** [21 April 2020 09:40 UTC](https://forum.ecmwf.int/t/downloading-the-data-from-carbon-dioxide-data-from-2002-to-present-derived-from-satellite-sensors/1246 "2020-04-21T09:40:41Z")
I have loaded the data in zip format however I can't open it. Matlab tells me: entry be password-protected or encrypted. Kindly advise me if you have experience in working with the data how can I use it. Thanks --- ## [Aerosol properties gridded data from 1995 to present derived from satellite observations is now published on the CDS catalogue](https://forum.ecmwf.int/t/aerosol-properties-gridded-data-from-1995-to-present-derived-from-satellite-observations-is-now-published-on-the-cds-catalogue/1381)
**Author:** [@Marcus\_Zanacchi](https://forum.ecmwf.int/u/Marcus_Zanacchi)\ **Replies:** 0\ **Last updated:** [12 December 2019 10:16 UTC](https://forum.ecmwf.int/t/aerosol-properties-gridded-data-from-1995-to-present-derived-from-satellite-observations-is-now-published-on-the-cds-catalogue/1381 "2019-12-12T10:16:29Z")
This published dataset provides observational records of aerosol properties obtained from observations collected by various satellite instruments. The main variables provided by this dataset are: aerosol optical depth, f…