"Martin Rowley" wrote in message
...


... are these the ones?

http://makeashorterlink.com/?L2EC12077


.... since the above, have now had time to look on the EUMETSAT site.
Have a look at:-

http://makeashorterlink.com/?S53F35177

which states that the height information is derived from IR (averaged
over pixels) irradiance - i.e. based on temperature. (It did cross my
mind that with the wonderful sensors around nowadays, some sort of
radar-based imagery might be employed, but thinking about it, the
Meteosat (& other) geostationary series are probably too far out for
meaningful data. Polar orbiting platforms are another matter though.)

These products have been around for at least 10 years; we used to use
them at Strike Command in the early 1990's, when the products were seen
via 'wetfax' systems - only 4 times a day (as now), but still quite
useful as long as the lack of resolution was allowed for.

Follow the embedded link (CTH) from the EUMETSAT entry above, and you
will find a colour-chart which goes with the imagery. Perhaps this is
what you were after?

HTH

Martin.
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