[Esip-preserve] Suggestion on Response to GEO
alicebarkstrom at verizon.net
Wed Sep 9 13:41:50 EDT 2009
The attachment is a quick and fairly short response to the six
questions GEO asked about.
If you're working on a Windows machine, it will probably look best in
Wordpad, since that's
what I used to create it. Those of you who prefer Macs are left to
your own devices.
I don't know that this is necessarily the final response, it's just a
quick attempt to get
something together so ESIP can have Carol Meyers respond back by mid-October.
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Response to Communique' from the Data Sharing Task Force to GEO Committees
1. Guidelines and procedures for GEOSS data, metadata, and value-added products and services
The ESIP Federation's cluster on Data Stewardship and Provenance is currently working on identifying
practical and permanent data identifiers that may be used for citations and archive management.
This work will involve a metadata testbed that may illustrate how these identifiers will interact with
semantic web technologies that may be of broader interest to the GEO.
2. Need for guidelines and procedures to realize desirable societal benefits
It is clear that tools and guidelines or procedures that assist users in working with these tools are
beneficial to achieving societal benefits from GEOSS data. Because of the cultural divergences
between the contributing parties of GEO, substantial effort is required to develop optimal and useful
tools, guidelines, and procedures. The ESIP Federation's work with a metadata testbed, as well as
related research work involving metadata standards comparisons, are potentially useful in providing
comparisons on a level playing field.
3. Usefulness of draft Implementation Guidelines
The draft Implementation Guidelines appear to be a useful statement of principles for further development.
4. Specific issues to be addressed
One of the major challenges in developing data sharing policies lies in the fact that there are four,
slightly inconsistent metadata standards that are required in order to catalog data so users can find
and use it:
The OAIS Reference Model
The NASA ECS/ECHO metadata model
The ISO 19115-2 and FGDC geospatial data metadata standards
The METS/PREMIS/Dublin Core library standards
The ESIP Federation can assist GEO in exploring practical methods of "harmonizing" these families.
5. Existing or planned activities to assist technical implementation of data sharing
The ESIP Federation's metadata testbed work, which will examine how metadata interacts with data
users to assist in accessing and using Earth science data.
6. Key dataset types
There are a number of dataset types that need to be included in tests of metadata standards:
- Highly regular satellite datasets that include both imagery and non-image data types,
such as temperature profiles, chemical constituent concentration profiles, and
lidar or microwave data, in which instantaneous data products are not images,
as well as time and space averaged versions of such data, which may or may
not be produced in gridded form
- Long term in situ data sets, such as those produced by surface networks, buoy and
tidal guage networks, and radiosonde temperature profiles
- Biodiversity samples
- Field experiment data, with multiple instruments observing over a fixed geographic
area for a specified time interval
- Aircraft and ship data, in which the data are obtained along the trajectory of the flight
or ship track
The ESIP Federation's metadata testbed intends to include these kinds of data in their trials
of different metadata standards.
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