|Paper title||The CEOS Cal/Val Portal: Calibration and Validation activities around space-borne sensors|
|Form of presentation||Poster|
The CEOS (Committee on Earth Observing System) Cal/Val Portal website: https://calvalportal.ceos.org/ serves as the main online information system for the CEOS Working Group on Calibration and Validation enabling exchanges and information sharing to the wider Earth Observation community within CEOS and beyond.
It provides users with connections to good practices, references and documentations as well as reference data and networks and is a source for reliable, up-to-date and user-friendly information for Cal/Val tasks. The portal facilitates data interoperability and performance assessment through an operational CEOS coordinated and internationally harmonized Cal/Val infrastructure consistent with QA4EO principles.
It is possible to access the various contents within the portal as a guest or by logging-in as a member. As a registered user you gain the rights to view dedicated sections, download/upload documents and contribute to the portal growth (e.g.: access to the document repository, specific datasets, terms and definitions area, etc.). News, announcements or novel content are highlighted on the home page and in the twitter feed (@CEOS_WGCV), providing fresh information from and for the community.
The CEOS WGCV page is the entry point for all the CEOS Working Group on Calibration and Validation (WGCV) subgroups, and hosts the IVOS and the CEOS SAR subgroup websites. The Cal/Val Sites page offers an overview, by a linked tree diagram, of the test sites used for calibration and validation activities. The sites are grouped according to WGCV subgroup domain and applications. The CEOS endorsed sites and the reference networks are distinguished by different colors.
In the Projects section relevant Cal/Val project links are provided subdivided by disciplines: Atmosphere, Land, Cryosphere and Ocean. In the Campaigns section several campaign websites links are provided and categorized, as for projects. The list of Cal/Val software tools and services are presented in the Tools page with corresponding links and descriptions. The portal hosts in the Cal/Val Data section the Modulation Transfer Function (MTF) Reference Dataset – with a dedicated webpage with reference papers and reference imagery, and the Speulderbos forest field database.
The Cal/Val Portal is based on Liferay®, an open source web platform that supports content management and other collaborative tools.