Background information on E-OBS version 2.0 |
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The E-OBS gridded daily dataset is based on the daily station
series available in the European Climate Assessment &
Dataset project. The ECA&D database has seen a major
software update in July 2009. This means that the programs and
scripts that are behind the database are rewritten. This was
needed to improve and to shorten the time needed to update the
database when new data is added. As part of this, the programs
that produce the blended station series have been improved as
well. Blended means that missing days from series are filled in
or extended with data from series of nearby stations. These
stations should be less than 25 km away and have less than 50
meter height differences. Also synoptical stations with these
conditions are used to extend the series for the most recent
years. We decided to produce blended series for each individual
station instead of station groups which was done before. The
gridding process uses these blended series. Because now we have
blended series for each individual station, we have used all the
available blended series in this new version of E-OBS and not
only those for stations groups which was done in the previous
release.
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