GCOS GOOS WCRP/OOPC IX/3
2) Observing practice literature, both national and international, is an important aspect of
climate metadata. Two of the more important decisions recorded in this literature were the
historical WMO/Commission for Marine Meteorology (CMM) decisions which improved
VOS data and the Marine Climatological Summaries Scheme (MCSS). To document the
evolution of observing practice, a procedure for identifying, archiving and distributing this
type of metadata should be developed. The archive should be updated through JCOMM
and its ETMC, without destroying the older entries, when observational practice is
updated. Eventually, the archive could also link to the results of instrument validations
and comparison studies.
3) An archive of metadata for moored and drifting buoys, and other ODAS (e.g. offshore
platforms), should be filled by Members, with WMO coordination, as soon as possible
with information on both current and historical deployments.
4) If possible, a given buoy should have a unique identifier. The re use of identifiers (buoy
numbers) for different buoys can cause erroneous application of metadata. If buoy
numbers must be reused, the metadata should include sufficient features (e.g., timestamps)
so that they can be correctly applied.
5) Metadata, including information on homogeneity adjustments applied, should be clearly
linked to data.
1) It remains essential to acquire data from independent platforms (e.g. VOS, buoys, research
vessels, satellites), to allow independent validation and homogenisation of records. The
important VOSClim data validation and improvement project should be continued.
2) There is a need to investigate the best way of applying wind homogenization techniques in
the absence of adequate metadata.
3) Proxy data (e.g. coral based SST estimates) should be carefully matched with
instrumental data, following the GCOS Climate Monitoring Principles. Error adjusted
annual fields may help in this process.
4) Continue efforts to make QC of data more consistent and effective, including
documenting and homogenising the methods used as much as possible.
1) Consider forming a working group on uncertainties in climate data and analyses. This
should include all climate data, not just marine, and the group could appropriately work with,
and report to, the GCOS Panels and IPCC.
1) We need to simplify and accelerate data access to users, especially new comers to the field.
There should be a route map to the best available data. JCOMM should work with the
GCOS Panels and appropriate research groups to identify operational, and experimental,
integrated climate information products and put them on their web portal.
2) The successful International Marine Meteorological Archive (IMMA) format developed
under the ETMC should continue to be used.
3) Support should be given to initiatives to improve the quality of research vessel surface
meteorological and oceanographic data and to widen access to these data and associated