The ENVISAT NRT Meteo files (in BUFR format) for the Radar Altimeter and ASAR instruments will be directly broadcasted on the Meteo GTS (Global Telecommunication System) Network starting from 1 June 2010. Note that the dissemination of the respective ENVISAT meteo product in PDS format as well as the new ASAR and Altimetry BUFR meteo products (including the addition of the WMO Header) shall be maintained on the ESA rolling archives at the PDHS-K (Kiruna) and PDHS-E (ESRIN) stations.
Details on the WMO Header can be found here