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1. Go to the Dissemination Service
2. Find the product you want using the search options
3. Register or log in to EO Sign In
4. Download (via HTTPS or FTPS)

The dissemination service provides the latest reprocessed Envisat SCIAMACHY higher level data.

The data is collection based and allows data browsing and download via treeview and filename search options.

Data download is available via HTTPS, including bulk download functionality. ESA internal users can use their ESAAD account to access the HTTPS Dissemination Service.

Access to ftps://hm-atmos-ds.eo.esa.int is available via common FTP clients using implicit FTP over TLS and your own EO Sign In credentials. For internal ESA users the ESAAD account cannot be used for FTP access.

New users can register an account on EO Sign In. For further information about the EO Sign In Service you can visit TellUs.

Should you need support to access the data, please contact EOHelp.

This Envisat SCIAMACHY Level 1b Geo-located atmospheric spectra V.10 dataset is generated from the full mission reprocessing campaign completed in 2023 under the ESA FDR4ATMOS project. 

This data product contains SCIAMACHY geo-located (ir)radiance spectra for Nadir, Limb, and Occultation measurements (Level 1), accompanied by supplementary monitoring and calibration measurements, along with instrumental parameters detailing the operational status and configuration throughout the Envisat satellite lifetime (2002-2012).
 
Additionally, calibrated lunar measurements, including individual readings and averaged disk measurements, have been integrated into the Level 1b product.

The Level 1b product represents the lowest level of SCIAMACHY data made available to the users. The measurements undergo correction for instrument degradation applying a scan mirror model and m-factors. However, spectra are partially calibrated and require a further step to apply specific calibrations with the SCIAMACHY Calibration and Extraction Tool [SciaL1c]. 

For many aspects, the SCIAMACHY Level 1b version 10 product marks a significant improvement with respect to previous mission datasets, supplanting the Level 1b dataset version 8.0X with product type SCI_NL__1P. Users are strongly encouraged to make use of the new datasets for optimal results.

The new products are conveniently formatted in NetCDF. Free standard tools, such as Panoply, can be used to read NetCDF data. 

Panoply is sourced and updated by external entities. For further details, please consult our Terms and Conditions page.

Please refer to the README file for essential guidance before using the data.