Many satellite data users lack the expertise, infrastructure and internet bandwidth to efficiently and effectively access, preprocess, and utilize the growing volume of space-based data for local, regional, and national decision-making. Furthermore, even sophisticated users of EO data typically invest a large proportion of their effort into data preparation. This is a major barrier to full and successful utilization of space-based data, and threatens the success of major global and regional initiatives supported by the Committee on Earth Observation Satellites (CEOS). As data volumes grow, this barrier is becoming more significant for all users.
Countries and international organizations have expressed a desire for support from CEOS to facilitate access to and processing of satellite data into CEOS Analysis Ready Data for Land (CARD4L) products. Systematic and regular provision of CARD4L will greatly reduce the burden on global satellite data users.
The CARD4L Framework
has three components:
The definition of CARD4L is not exclusive or prescriptive. The definition of CARD4L reflects the attributes of fundamental measurement products for the majority of global remote sensing users with land imaging applications, and are the minimum level required to support time series analysis and data interoperability.
Product Family Specs
Detail specific 'Threshold' and 'Target' requirements for:
– General Metadata
– Per-pixel Metadata
– Radiometric and Atmospheric Corrections
– Geometric Corrections
Assess how well the specific product complies with each of the metadata and calibration criteria in the Product Family Specification.
Includes a description of ‘how’ it complies.
The CEOS LSI-VC and Working Group on Calibration & Validation (WGCV) have defined formal processes for how these assessments will be carried out, including the peer reviews that will be undertaken by the WGCV:
Product Assessment Process >>
Peer Review Process >>