40 (Cg-XII)—the 10th anniversary
World Meteorological Congress (1995) adopted Resolution
40—WMO policy and practice for the exchange of
meteorological and related data and products including
guidelines on relationships in commercial meteorological
adoption of this resolution 10 years ago was a landmark in
the history of WMO, ensuring that its Members would be able
to exchange data and products free of charge and without
conditions on their use.
known simply as Resolution 40, it was followed four years
later by a similar resolution covering hydrological data
(Resolution 25 (Cg-XII).