There are many archives of such data but they seldom publish
catalogues or inventories.
It appears that, although some satellites are operational and
even part of the processing is operational, the interfacing to
the oceanographic world is far from operational. The special
demands of that discipline are generally not recognised.
Future satellite systems
Three major developments could be identified as of importance to
Oceanographers:
better sensors, meaning: more sensitivity and better geometric
resolution,
active techniques get more attention, since these decrease the
influence of the atmosphere to a large extent,
improved technology in the satellite to enable on board
corrections and processing of the data in order to reduce data-
rates and beam down only specific data in "oceanographic units".
Such data could then be handled as "normal" oceanographic data
and e.g. be exchanged in the General Format 3.
Developments for the real-time case
Most relevant for real time oceanographic applications will be:
further development of on-board processing techniques, in order
to reduce data rates. Only data in "oceanographic units" could
be transmitted; this leads to highly specialised satellite
missions;
development of low cost satellite data receiving stations, where
on-board a ship, imagery can be collected relevant to the day
today planning of the expedition;
development of methods to use existing networks for the
distributation of satellite data. ESA's SPINE experiment gives
an idea of the potential of this, but also other networks (like
TV- and datanetworks) could be considered.
Developments for the non real-time case
In this context, the Task Team considers of importance:
an increase in awareness on the availability of RS data on a
world wide scale. As one step towards this, IOC's MEDI (Marine
Environmental Data and Information) system will be expanded
with references to satellite data files all over the world. This
is an initiative of the IODE working committee. MEDI catalogues
are used throughout the oceanographic community;
a worldwide coordination of catalogue and inventory formats.
This could be combined with on-line access to these catalogues
throug dial-up lines;
a development of dataproducts, aimed at oceanographic applica-
tions. Here the small contrasts, and the other specific
properties of oceanographic phenomenae should be taken into
account. The availability of quick-looks for oceanographic
work should have high priority.
The wide availability of satellite data for scientific purposes
on a world wide scale should be the prime objective here.
An international body, as a meeting platform for holders of retro-
spective RS data concerning the marine environment, is perhaps a
way to obtain the necessary coordination on a world wide scale.
The Task Team feels that is is appropriate that the network of
oceanographic datacentres plays a role to ease the access of
relevant RS data by oceanographers. Each national oceanographic
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