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Data

We are making data available via several websites. Please see links and information as given on our Main website.

Below we provide access to satellite-derived CO2 and CH4 data products and related documents as generated via several projects:

  1. Annual growth rates of XCO2. Please click HERE.
  2. Copernicus Climate Change Service (C3S): Several CO2 and CH4 data products. Please click HERE.
  3. ESA Climate Change Initiative (CCI): Several CO2 and CH4 data products. Please click HERE.
  4. EU H2020 4C project: XCO2 monthly, 2 deg x 2 deg, Obs4MIPS format. Access to data and documentation: Click HERE.


Annual growth rates of XCO2 and XCH4

We have developed an algorithm to compute annual growth rates of satellite-derived XCO2, see Buchwitz et al., 2018. Here an update for XCO2 and a first application to XCH4: Reuter et al., 2020.

The growth rates are regularly updated, e.g., in the context of our Copernicus activities, see:

Copernicus Press Release (10-Jan-2023) with CO2 and CH4 from Univ. Bremen: Copernicus: 2022 was a year of climate extremes, with record high temperatures and rising concentrations of greenhouse gases.

See also our contribution to Copernicus European State of the Climate 2021 (22-Apr-2022) with CO2 and CH4 from Univ. Bremen: ESOTC 2021. Satellite-derived greenhouse gas concentrations from Univ. Bremen: Climate indicators: Greenhouse gas concentrations.


Data for Copernicus Climate Change Service (C3S)

We generate operationally satellite-derived greenhouse gas (CO2 and CH4) data products for the Copernicus Climate Change Service (C3S), which are available for interested uses via the Copernicus Climate Data Store (CDS) (search for CO2 or CH4 to get these data products).

These data sets are called "Climate Data Records" (CDR) and each year we extend the existing time series by one year (either by adding one year or by reprocessing the entire time series for a given product including the added year).

Here we provide links to the relevant documentation:

Data set CDR7 (2003 - 2022):

The data products are available via the Copernicus Climate Data Store (CDS). Documentation:

Data set CDR6 (2003 - 2021):

The data products are available via the Copernicus Climate Data Store (CDS). Documentation:

Data set CDR5 (2003 - mid 2020):

The data products are available via the Copernicus Climate Data Store (CDS). Documentation:

Data set CDR4 (2003-2019):

The data products are available via the Copernicus Climate Data Store (CDS). Documentation:

Data set CDR3 (2003-2018):

The data products are available via the Copernicus Climate Data Store (CDS). Documentation:

Data set CDR2 (2003-2017):

The data products are available via the Copernicus Climate Data Store (CDS). Documentation:

Data set CDR1 (2003-2016):

The data products are available via the Copernicus Climate Data Store (CDS). Documentation:


Data produced in the framework of the GHG-CCI+ project of ESA's Climate Change Initiative (CCI)

We generate satellite-derived greenhouse gas (CO2 and CH4) data products for ESA's Climate Change Initiative (CCI), which are available for all interested users via the CCI Open Data Portal (ODP) and via the CEDA Archive. The data are available free of charge but you have to agree to the GHG-CCI Licence.

These data sets are called "Climate Research Data Package" (CRDP) and each year we make an updated data set available.

Here we provide links to the relevant documentation (most of these documents are also available from the GHG CCI key-documents website):

General documents:

Documentation related to GHG-CCI+ data set CRDP9:

Documentation related to GHG-CCI+ data set CRDP8:

Documentation related to GHG-CCI+ data set CRDP7 (planned availability: April 2022):

Documentation related to GHG-CCI+ data set CRDP6 (available since March 2021):

Documentation related to GHG-CCI+ data set CRDP5 (available since March 2020):


Data produced for EU H2020 project "Climate-Carbon Interactions in the Current Century"(4C)

The 4C project is funded by the European Union's Horizon 2020 research and innovation program under Grant Agreement No. 821003.

For this project, we generate a specific data product from satellites: XCO2 (in ppm), i.e., column-averaged dry-air CO2 mole fractions, including uncertainty estimates, averaging kernels, etc.

The product is a gridded (Level 3) product in Obs4MIPs format and has monthly time and 2 deg x 2 deg spatial resolution.

How a similar product but with lower spatial resolution (5 deg x 5 deg) has been generated is described in detail in Reuter et al., 2020. The latest version of that CO2 product is available via the Copernicus Climate Data Store (CDS) (simply search for CO2).

The latest product generated for 4C is XCO2_OBS4MIPS_2x2, version 4.2. This product covers the period 2003 - 2019.

For information on this product, including validation, please read this DESCRIPTION (pdf file) (or the similar but differently formatted D1.5 (pdf file) deliverable document).

Data download: ACCESS to DATA PRODUCT (single NetCDF file, 310 MB) For data usage conditions please see Section 7 of the DESCRIPTION.

How this product "looks like" is shown in this ANIMATION (gif, 15 MB).

We also generated a similar data product for XCH4 (column-averaged methane, see also Reuter et al., 2020). For access to this data product please click HERE. For data usage conditions please see Section 7 of the DESCRIPTION. To see an animation (currently only for 5 deg resolution) please click HERE.

Here information related to the latest update of our product (v4.5; 2003-2022) as generated for 4C:

For access to this v4.5 data product please click HERE (NetCDF, 365 MB).

For additional information including data usage conditions of the v4.5 product please see Section 2.7 of this Technical Report (pdf).


Data Privacy

Last modification: 6-Feb-2025

Author: Michael.Buchwitz@iup.physik.uni-bremen.de