THE KNMI/ERA-40 WAVE ATLAS
Conditions for accessing the
KNMI/ERA-40 Wave Atlas
The KNMI/ERA-40 Wave Atlas available on this server is
provided freely for research purposes. Before accessing the
KNMI/ERA-40 Wave Atlas please read the conditions below and
acknowledge that you accept them.
The KNMI/ERA-40 Wave Atlas available on this server may be
used freely for research only. Commercial use of the data is not
Research is understood as any project organised by a university,
scientific institute or similar (private or institutional), for
non-commercial research purposes only. A necessary condition for the
recognition of non-commercial purposes is that all the results obtained
are openly available at delivery costs only, without any delay linked
to commercial objectives, and that the research itself is submitted for
Although every care has been taken in preparing the
KNMI/ERA-40 Wave Atlas, we cannot guarantee that the data are
correct in all circumstances; neither do we accept any liability
whatsoever for any error or omission in the data, or for any loss or
damage arising from its use. Known caveats are:
The atlas statistics are based on data averaged on a 1.5°x1.5° area or equivalently a
period of about 3 hours, and could be exceeded at short time/space scales.
The ERA-40 model does not account for shallow water effects and therefore the atlas statistics
are only valid in deep water regions.
Due to resolution, tropical cyclones are not resolved by the ERA-40 system.
Therefore, the statistics for the regions of the tropical storms may be too low.
Any person extracting data from the KNMI/ERA-40 Wave Atlas
will accept responsibility for informing all data users of these
Data from the KNMI/ERA-40 Wave Atlas must not be supplied as
a whole or in part to any third party without our authorisation.
Articles, papers, or written scientific works of any form, based in
whole or in part on the KNMI/ERA-40 Wave Atlas, will contain
an acknowledgment concerning the extracted data.
If you accept these conditions please enter the information below for our records, and press Accept.
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