# New parameters in the CAMS global atmospheric composition forecasts

**URL:** <https://forum.ecmwf.int/t/new-parameters-in-the-cams-global-atmospheric-composition-forecasts/8231>\
**Category:** CAMS - Announcements\
**Tags:** cams, cams\_global\_forecast\
**Created:** [4 December 2024 18:07 UTC](https://forum.ecmwf.int/t/new-parameters-in-the-cams-global-atmospheric-composition-forecasts/8231 "2024-12-04T18:07:05Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Michela](https://forum.ecmwf.int/letter_avatar_proxy/v4/letter/m/898d66/32.png) [@Michela](https://forum.ecmwf.int/u/Michela)\
**Post date:** [4 December 2024 18:07 UTC](https://forum.ecmwf.int/t/new-parameters-in-the-cams-global-atmospheric-composition-forecasts/8231/1 "2024-12-04T18:07:05Z")

</div>

We are pleased to announce that two new parameters have been added to the [CAMS global atmospheric composition forecasts](https://ads.atmosphere.copernicus.eu/datasets/cams-global-atmospheric-composition-forecasts?tab=overview):

- Total column volcanic sulphur dioxide (tc\_VSO2)
- Volcanic sulphur dioxide (VSO2)

The data can be downloaded via the Atmosphere Data Store [webform](https://ads.atmosphere.copernicus.eu/datasets/cams-global-atmospheric-composition-forecasts?tab=download) or the [API](https://ads.atmosphere.copernicus.eu/how-to-api). If you use the API please build your request on the webform and click the ‘Show API request’ button.

The [relevant documentation](https://confluence.ecmwf.int/x/5cqpD) has been updated with details in [guideline number 2](https://confluence.ecmwf.int/display/CKB/CAMS%3A+Global+atmospheric+composition+forecast+data+documentation#CAMS:Globalatmosphericcompositionforecastdatadocumentation-Guidelines).

For any enquiries, you may raise a query from the [ECMWF Support Portal](https://jira.ecmwf.int/plugins/servlet/desk/portal/1/create/202) (ECMWF login required).

Regards  
ECMWF Support