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ECMWF makes available a BUFR decoding library freely downloadable from here and a synop2bufr converter which is maintained with the help of external contributors. Updates of the synop2bufr software will be announced in this page. 

synop2bufr latest version 20-05-2014


Free downloadsynop2bufr_20140520.f

Changes in this version

contribution by Mr. Perisa Sunderic and Dr. Eva Cervena

  • Conversion of wind speed and maximum wind gust speed above 99 knots
  • Conversion of group 54g0sndT for temperature change 10 degrees and more.
  • Correct presentation of height of base of cloud when sky clear is reported.


synop2bufr previous versions


Free downloadsynop2bufr_20140402.f

 

Changes in this version contributed by Mr. Perisa Sunderic and Dr. Eva Cervena

  • Conversion of group 54g0sndT (temperature change)

  • Conversion of group 56DLDMDH (direction of cloud drift)

  • Conversion of group 57CDaeC (direction and elevation of cloud)

  • Conversion of group 58p24p24p24 (non-negative change of pressure over the past 24 hours)

  • Conversion of group 59p24p24p24 (negative change of pressure over the past 24 hours)

  • Correct presentation of Height of the station and Height of barometer in BUFR messages, if H and/or HP are missing in WMO No.9, Volume A.

 


Free downloadsynop2bufr_20140217.f

Changes in this version contributed by Mr. Perisa Sunderic and Dr. Eva Cervena

  • Clouds with bases below station level reported in all groups of SYNOP section 4 are reflected in BUFR data.
  • Specification of vertical significance 0 08 002 within 3 02 036 has been refined.
  • Height of station above msl 0 07 030 is set to missing for stations that are defined in Volume A as aerodromes (A in the column REMARKS).
  • The regulation B/C 1.2.3 requires reporting 0 07 030 (Height of station ground above mean sea level) as defined in Note (3) under BUFR/CREX Table B, Class 07. 
  • The program synop2bufr obtains the station metadata from Volume A, height of station ground above msl is taken from the column H/HA.  Consequently,  the altitude of the aerodrome HA has been reported for 0 07 030 instead of the required Height of station ground above msl in BUFR data from stations at aerodromes . And it is to noted that HA may be very different from the required 0 07 030, e.g. station 11518 has HA = 380 m, whereas 0 07 030 = 364.0 m.
  • 0 07 030 is set to missing as a default value for aerodromes.
  • A list of aerodromes is hard coded in the converter and has to be updated as soon as changes are introduced in Volume A.

 

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