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User Requirements Document (URD):

In the User Requirements Document Version 2.1 (URDv2.1) user requirements are formulated for the satellite-derived data products to be generated within the GHG-CCI project. They are based on inputs from key users who are part of the GHG-CCI Climate Research Group (CRG) and other inputs, most notably peer-reviewed publications. Previous versions are: URDv2, URDv1.

GHG-CCI Phase 2 (2014-2016) documents:

CARv4: Climate Assessment Report (CAR) version 4 (CARv4) for data set "Climate Research Data Package" No.4 (CRDP#4) as written by the GHG-CCI Climate Research Group (CRG).

CARv3: Climate Assessment Report (CAR) version 3 (CARv3) for data set "Climate Research Data Package" No.3 (CRDP#3) as written by the GHG-CCI Climate Research Group (CRG).

CARv2: Climate Assessment Report (CAR) version 2 (CARv2) for data set "Climate Research Data Package" No.2 (CRDP#2) written by GHG-CCI CRG.

PVIRv5:  Product Validation and Intercomparison Report (PVIRv5) for data set "Climate Research Data Package" No.4 (CRDP#4).

PVIRv4:  Product Validation and Intercomparison Report (PVIRv4) for data set "Climate Research Data Package" No.3 (CRDP#3).

PVIRv3.2: Product Validation and Intercomparison Report (PVIRv3.2) for data set "Climate Research Data Package" No.2 (CRDP#2).

PSDv3: A key initial activity of Phase 2 is to improve the product format for the GHG-CCI core (=ECA) products (purpose: better product harmonization, meeting CCI data standards, etc.). The new Product Specification Document version 3 (PSDv3) describes the "common parameters" of all GHG-CCI core products for Climate Research Data Package No.2 (CRDP#2) data set released end of March 2015.

URDv2 (see above).

Short TN on planned Sentinel data use.

Technical / project internal documents:

DARDv4.1 (Data Access Requirements Document).

SSDv1 (System Specification Document).

GHG-CCI Phase 1 (2010-2013) documents:

Documents related to the Climate Research Data Package (CRDP#1):

The CRDP is the first version of the ECV GHG data base, i.e., it contains the satellite-derived CO2 and CH4 data products as generated with all algorithms selected during the Round Robin (RR) exercise (see below).

Validation and intercomparison results of the CRDP are reported in the Product Validation and Intercomparison Report (PVIR, v2).

A first user assessment of the CRDP data products is reported in the Climate Assessment Report (CAR), version 1.1.

The algorithms used to generate the CRDP are described in Algorithm Theoretical Baseline Documents (ATBDs). The most recent version (version 2) of GHG-CCI ATBDs is referenced in the products tables of the Climate Research Data Package (CRDP) website.

The Product User Guides (PUGs) advises the user how to use the data. The PUGs include, e.g., detailed file format descriptions. The most recent versions (version 1) of GHG-CCI PUGs is referenced in the products tables of the Climate Research Data Package (CRDP) website.

Round Robin exercise (finished in 2012) documents:

ASR

The Algorithm Selection Report (ASR) describes the "Round Robin" algorithm selection results (decision and justification based on the results reported in AIECARv1 and PVASR, see below).

AIECARv1

The Algorithm Inter-comparison and Error Characterization & Analysis Report Version 1 (AIECARv1) describes key results obtained in the first two years of the GHG-CCI project with respect to error characterization and inter-comparison of the GHG-CCI satellite-derived data products. The initial version generated after the first year of this project is AIECARv0.

PVASR

The Product Validation and Algorithm Selection Report (PVASR) describes the validation of the satellite data products as generated after the first two years of the GHG-CCI project ("Round Robin" data set).

Previous ATBDs:

Former versions of the ATBDs are ATBDv1 and ATBDv0.


Project internal documents:

PVPv1

The Product Validation Plan Version 1 (PVPv1) describes how the GHG-CCI satellite-derived data products will be validated.

DARDv3

The Data Access Requirements Document Version 3 (DARDv3) identifies all the data that needed as input to generate the satellite-derived GHG-CCI data products.

PSDv2

The Product Specification Document Version 2 (PSDv2, PSDv1) describes the GHG-CCI satellite-derived data products. Due to the ongoing development within GHG-CCI, mature data product formats are not necessarily available. For this reason it is expected that the PSD is updated on an annual basis.

RREPv2

At the end of the 2-year Round Robin (RR) phase the best algorithm(s) will be selected. How this is planned to be done is explained in the Round Robin Evaluation Protocol Version 2 (RREPv2, RREPv1).

SRDv1

The System Requirements Document (version 1) of GHG-CCI lists GHG-CCI system requirements relevant for future phases of the CCI.