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WMO Resolution 40 SYNOP Data
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Certain SYNOP (i.e. surface synoptic) reports that are received at NCEP are
covered under WMO Resolution 40
as "additional data and products". These reports are therefore restricted,
and they are stored in the observational database as BUFR type/subtype
b000/xx000, separately from the unrestricted
SYNOP reports which are stored as b000/xx001.
Both datasets are merged during operational model dumps, and therefore the
restricted reports are present in certain model dump files containing the
name adpsfc as well as in most PREPBUFR files.
- Restricted SYNOP reports are not to be exported out of the U.S. nor
made available to any commercial entity who would use them to create products
for sale. This is especially important to the countries who provide NCEP with
access to this data, as many of their local meteorological services must
recover a portion of their budgets by creating certain products for sale
within their own and neighboring countries. Therefore, they understandably do
not want this data to become available to private entities who would use it to
create competing commercial products for sale within the same market.
- The restriction does not have an expiration, meaning that all restricted
SYNOP reports remain accessible only to the allowable set of recipients for
Obligations of users:
- Users of this data may redistribute it only to recipients within
any U.S. government agency, educational institution, or research group.
Before doing so, the user must complete the
"inform and acknowledge" procedure with the intended recipient as described
on the previous page.
is provided for this purpose which
may be cut-and-pasted into an e-mail from the user to the intended recipient.
Once the reply acknowledgement is received from the recipient, the user
should then forward a copy of this acknowledgement to
firstname.lastname@example.org before making the
- If contacted by a representative of a foreign organization regarding
access to such data, the user should refer the individual to the national
meteorological service within his/her own country for assistance.