Documents (see below) are either related to all products (e.g., User Requirements Document (URD)) or are related to specific data sets called "Climate Research Data Packages" (CRDP).

The first GHG-CCI+ CRDP is CRDP5, which comprises the following products:

  • CO2_OC2_FOCA (v08): XCO2 from OCO-2 retrieved with the FOCAL algorithm. The product is global and covers the period 2015 - 2017.
  • CH4_S5P_WFMD (v1.2): XCH4 from S5P/TROPOMI retrieved with the WFMD algorithm. The product is global and covers the period Nov-2017 - 2018.
  • CO2_TAN_OCFP (v1): XCO2 from TanSat retrieved with the OCFP (or UoL-FP) algorithm. This initial product is (currently) limited to TCCON sites and covers the period 2017 - 2018.

Currently we are working on CRDP6 and this data set will be available end of February 2021. It will comprise longer time series of the products listed above and in addition XCO2 and XCH4 products from GOSAT-2.

Note that all GHG-CCI pre-cursor project data products (CRDP1-CRDP4) are now generated operationally via C3S and latest versions of these products are available via the Copernicus Climate Data Store (CDS).

An overview of all products (CCI and C3S) and related documents is also provided HERE.

Key documents

Document name Version Issue date Download
User Requirements Document (URD) 3.0 Feb. 17, 2020
Product Specification Document (PSD) 3 June 6, 2014
CRDP5: Algorithm Theoretical Basis Document (ATBD) - CO2_OC2_FOCA 1.0 Aug. 23, 2019
CRDP5: Algorithm Theoretical Basis Document (ATBD) - CH4_S5P_WFMD 2.0 Aug. 20, 2019
CRDP5: Algorithm Theoretical Basis Document (ATBD) – CO2_TAN_OCFP 1.0 Aug. 22, 2019
CRDP5: Product User Guide (PUG) - CO2_OC2_FOCA 2.0 Nov. 29, 2019
CRDP5: Product User Guide (PUG) - CH4_S5P_WFMD 1.0 Oct. 23, 2019
CRDP5: Product User Guide (PUG) - CO2_TAN_OCFP 1.0 Dec. 20, 2019
CRDP5: End-to-End ECV Uncertainty Budget (E3UB) – CO2_OC2_FOCA 1.0 Jan. 6, 2020
CRDP5: End-to-End ECV Uncertainty Budget (E3UB) – CH4_S5P_WFMD 2.0 Dec. 19, 2019
CRDP5: End-to-end ECV Uncertainty Budget (E3UB) - CO2_TAN_OCFP 1.0 Dec. 20, 2019
CRDP5: Product Validation and Intercomparison Report (PVIR) 1.1 March 13, 2020
CRDP5: Climate Assessment Report (CAR) 1.2 March 20, 2020