The fifth and final version of the Gaps Assessment and Impacts Document (GAID) is now available!

The objective of this GAID is to identify and assess – through careful analysis against both existing and envisaged user requirements – yet unfulfilled user needs (‘gaps’) in the observation capability of Essential Climate Variables (ECVs) within the sphere of the GAIA-CLIM project.

The impact assessment has focus on the availability of, and ability to utilize, truly reference quality traceable measurements in support of the long-term sustained space-borne monitoring of a set of ECVs. The GAIA-CLIM primary atmospheric ECVs specifically are temperature, water vapour (H2O), ozone (O3), carbon dioxide (CO2), methane (CH4) and aerosols. Because these ECVs are being monitored through the EUMETSAT operational satellite programme, the Copernicus Space Segment, and ESA research satellites, as well as by non-EU satellites, the relevance of the gaps and impact assessment is not limited to Europe. Nevertheless some focus in the project is placed on the European infrastructure.

Figure: Assessment of gaps and impacts shall be iterative and include external input.

The gaps impact assessment and discussion of potential remedies is organised per gap type in order to identify, e.g., similarity and/or complementarity between the listed gaps that originate from different work packages. The gap identification and assessment and subsequent impact discussions will be continued during the project. The GAID is therefore a living document and several versions of this document will be produced throughout the project. Both, the list of gaps and the impact assessment, are expected to evolve. Gaps are regularly identified and updated from the project work packages. User needs are further obtained from the GAIA-CLIM user survey and user workshops, as well as through various pieces of (new) externally available documentation. The GAID (version 1.0) was presented at the first user workshop on 6 October 2015 in Rome and the third version was presented at the second user workshop on 21-23 November 2016 in Brussels. Further expert input on the public drafts is welcomed suggesting additional gaps or updating our knowledge of the identified gaps’ status.