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Title
Systems for data processing, anaylsis and representation


Canadian Earth Observation Network (CEONet)
T. Fisher, N. Denyer
Canada Centre for Remote Sensing, Natural Resources Canada
P. Price
Canadian Space Agency, Industry Canada
H. Edel
Department of Fisheries and Oceans, Canada
L. Stirling
Atmospheric Environment Service, Environment Canada
Abstract
Earth observation applications have reached a level of sophistication where data are
required from many national and international databases. A particular application may
require simultaneous access to land use, climate and atmospheric data. These data could
come from widely distributed holdings. Furthermore, other types of geophysical
information could be needed to complement the application. The data sources are often
domestic, but increasingly they include foreign data banks as well.
While Canada has extensive national and regional data holdings, many user studies have
pointed out serious weaknesses in the data management infrastructure which hamper or
preclude access to data. When data can be acquired, integration of the data is a major and
costly task. To address these shortcomings in the Canadian earth observation data
services, the CEONet program is being developed collaboratively by science based
departments with major data holdings. The proposed CEONet program would improve
access to data by providing an interoperable earth observation catalogue system for
Canada, and by providing sample datasets and tools that will simplify catalogue access and
visualization. It will also promote standards that will facilitate data integration.
Keywords: Data Management, catalogues, earth observation
these data bases has value as a
Background separate entity, their value, if combined
and linked to multidisciplinary users,
Canada is rich in national databases of would be greatly enhanced.
interest to both domestic and
international users (Noetix and Roger Several independent user studies have
Buxton Associates, 1993). The identified serious weaknesses in the
Canadian archive of remotely-sensed Canadian earth observation data
imagery contains more than 1.2 million management infrastructure that hamper
images covering the Canadian landmass or preclude access to the data (Noetix,
and territorial waters many times since 1993). When the data can be acquired,
1972. Canada is also the custodian integration of the data is a major and
for several international databases such costly task. Further, these studies have
as the World Data Center for Drifting identified a common set of
Ocean Buoy Data. Although each of requirements: users need to find out
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