On 15/03/2020 08:40, N_Cook wrote:
One remaining mystery
There are very few of these ship reports, for the channel approaches
anyway, that must seem to include the rarer wind reports to be plotted
there. Just this one in the last 12 hours or so
http://meteocentre.com/analysis/map-surface.php?map=UK&date=2020031507&size=large&lang =en&area=uk

Certainly not hourly reports from the same ship. Do they only report ,
assuming by human action, when there is something out of the ordinary to
report although 15kn in that last one, that seems unlikely, or when the
relevant person is otherwise not occupied on some other duty or at WMO
(or whover the coordinator is) request or what is the protocol?




May as well go here, reply from an ex-metman heavily involved with
efforts to keep ship-reporting of met going, at the time satellites were
going to take over but he could see that satellites did not and still do
not see everything.

"Most ships that do report are supposed to do so at 00, 06, 12, 18 UTC
but it is all done by the ships officers and some are more diligent than
others. Some ships have automatic or semi-automatic systems and some of
those report 3 hourly. Not all reports get through to the weather
centres. For climate purposes the ships met log-books are collected and
digitised separately and those readings replace the transmitted reports
in the data base once they are available."


--
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