CEOS and CEOS Agencies will encourage national and international agencies to improve and expand upon the availability of the in situ observations needed for the calibration and validation of satellite land data products used for carbon science.? This will include coordinating with national and international agencies collecting in situ data to 1) assess the quality and coverage (spatial and temporal) of validation data and 2) employ design features that entice data sharing and provide safeguards.
All Carbon Action Items currently under lead of WGCV are under assessment in order to
Assessment is nearly complete but the consolidation/merging of different input into one work plan is ongoing.
Results: Several action items are fully/partially aligned to ongoing work on sub-group level and to cross-cutting tasks or action items in the WGCV.
Hint: some of action items don't directly translate; some can be combined. An adequate alignment matrix will be provided with the consolidation of the assessment.
CEOS Agencies are working in and with nation-wide and international networks for in-situ measurements. Dedicated networks are usually partner by the CEOS WGCV and LSI VC of CEOS in order to retrieve validation or "ground truth" data records.
It shall be noted that baseline sites are needed to have auxiliary data collection of aerosol, water vapor and ozone (sun-photometer and/or mini-spectrometer) for addressing the retrieval uncertainties resulting from the atmospheric corrections.
In addition standard / validation / QA protocols must be established to ensure the assessments of quality and coverage.