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CMC has been decoding Canadian upper-air data in BUFR since the beginning of 2014 on a regular basis. The gradual conversion to BUFR format of the Canadian upper air network is underway. The dissemination of BUFR data began in December 2013 and currently there are 15 radiosondes, out of 31, on the GTS. For the time being, the full resolution profile (sampling every 2 secondssecond) is not yet available. Only a selection of vertical levels is sent on the GTS. Canadian BUFR data contain the drift of the radiosonde. For more information, please consult the following GENOT.
As of 28 October 2020 at 12 UTC, all Canadian upper air stations have transitionned to GRAW type radionsondes, except for Whitehorse (an old autolauncher).