WORLD METEOROLOGICAL ORGANIZATION
COMMISSION FOR BASIC SYSTEMS
----------------------------FOURTH MEETING OF
INTER-PROGRAMME EXPERT TEAM
ON DATA REPRESENTATION AND CODES
IPET-DRC-IV / Doc. 3.2 (7)
( 10.V.2012)
------------------------ITEM 3.2
ENGLISH ONLY
EXETER, UK, 21 - 25 MAY 2012
Sequence 3 02 067
- Revised proposal Submitted by Sibylle Krebber
_______________________________________________________________________
Summary and Purpose of Document
This document contains further revision of sequence 3 02 067 –
additional synoptical parameters.
_______________________________________________________________________
ACTION PROPOSED
The meeting is requested to review the document and proposed the revised
sequence for validation.
REFERENCES:
[1] Manual on Codes, WMO - No 306, Volumes I.1 and I.2.
[2] Final report of the second meeting of the inter-programme expert team on data
representation and codes (IPET-DRC-II), Brasilia, Brazil, 31 August – 3 September 2010
[3] Final report of the third meeting of the Inter-Programme Expert Team on Data
Representation and Codes, Australia, Melbourne, 20 - 23 September 2011
DISCUSSIONS
During the preceding year little progress with validation of the new sequence 3 02 067 has taken
place.
Regarding the encoding of special clouds and supplementary cloud types an inconsistency was
discovered by Eva Cervena and discussed.
Special clouds and Supplementary cloud type should not be encoded within one replication as
the direction (020054) and evolution (020137) could be different for each.
Eva Cervena proposed a modification of this part of the sequence which was highly appreciated
and adopted with many thanks.
As this sequence is meant for additional synoptical parameters for multiple use it is proposed to
keep it for validation. It is foreseen that other modification may be recommendable if more
investigations were done by other countries, e.g. Russia at the moment.
PROPOSAL
The existing sequence 3 02 067 for validation is to be replaced in BUFR table D by the
revised sequence:
Table D:
Category 02 – Meteorological sequences common to surface data
TABLE
REFERENCE
F X Y
3 02 067
TABLE
REFERENCES
0 01 023
0 04 025
0 02 177
1 01 000
0 31 001
0 20 003
1 02 000
0 31 001
0 05 021
0 20 001
0 05 021
1 01 000
0 31 000
3 02 056
1 03 000
0 31 000
0 33 041
0 20 058
0 22 061
ELEMENT DESCRIPTION
Additional synoptical parameters
Observation Sequence number
Time period or displacement
Method of snow depth measurement
Delayed replication of 1 descriptor
Delayed descriptor replication factor
Present weather
Delayed replication of 2 descriptors
Delayed descriptor replication factor
Bearing or azimuth
Horizontal visibility
Bearing or azimuth
Delayed replication of 1 descriptor
Short delayed descriptor replication
factor
(Sea/water temperature)
Delayed replication of 3 descriptors
Short delayed descriptor replication
factor
Attribute of following value
Visibility seawards from a coastal
station
State of the sea
Time period (= 0 minutes)
set to missing to cancel
previous entry
1 01 000
0 31 000
0 20 137
0 20 136
0 04 025
Delayed replication of 1 descriptor
Short delayed descriptor replication
factor
(Wind waves)
Delayed replication of 1 descriptor
Delayed descriptor replication factor
(Swell waves)
Delayed replication of 4 descriptors
Delayed descriptor replication factor
True direction of a phenomenon or
clouds
Evolution of Clouds
Cloud type
Special clouds
Delayed replication of 3 descriptors
Delayed descriptor replication factor
True direction of a phenomenon or
clouds
Evolution of Clouds
Supplementary Cloud type
Time period or displacement
0 13 012
0 04 025
Depth of fresh snow
Time period or displacement
0 11 042
Maximum wind speed (10-minute
mean wind)
Delayed replication of 4 descriptors
Delayed descriptor replication factor
Time significance
3 02 022
1 01 000
0 31 001
3 02 023
1 04 000
0 31 001
0 20 054
0 20 137
0 20 012
0 20 090
1 03 000
0 31 001
0 20 054
1 04 000
0 31 001
0 08 021
0 04 025
0 11 042
0 08 021
Time period or displacement
Maximum wind speed (10-minute
mean wind)
Time significance
1 15 000
0 31 001
0 08 021
Delayed replication of 15 descriptors
Delayed descriptor replication factor
Time significance
0 04 015
0 08 021
0 04 025
Time increment
Time significance
Time period or displacement
0 11 001
0 11 002
0 08 021
Wind direction
Wind speed
Time significance
0 04 015
0 08 021
0 04 025
Time increment
Time significance
Time period or displacement
0 11 001
Wind direction
Reference period of fresh
fallen snow
Time period in minutes ( =60 )
= 30 (time of occurrence) or
= 17 (start of phenomenon)
Time displacement (=-xx )
set to missing to cancel
previous entry
= 30 (time of occurrence) or
= 17 (start of phenomenon)
Time increment (=-xx1 )
= 2 (time averaged)
Time period (= - 10
minutes, or number of
minutes after a significant
change of wind)
=22 (time of occurrence of
wind shift)
Time increment (=+xx2 )
= 2 (time averaged)
Time period (= - 10
minutes, or number of
minutes after a significant
change of wind)
0 11 002
0 08 021
Wind speed
Time significance
0 04 025
Time period or displacement
0 04 015
Time increment
1 03 000
0 31 001
0 04 025
Delayed replication of 3 descriptors
Delayed descriptor replication factor
Time period or displacement
0 04 025
Time period or displacement
0 20 003
1 10 000
0 31 001
0 04 025
Present weather
Delayed replication of 10 descriptors
Delayed descriptor replication factor
Time period or displacement
0 04 025
Time period or displacement
0 05 021
0 05 021
0 20 054
Bearing or azimuth
Bearing or azimuth
True direction of a phenomenon or
clouds
Intensity of phenomena
Obscuration
Character of obscuration
Phenomena occurrence
Special phenomena
0 20 024
0 20 025
0 20 026
0 20 027
0 20 063
set to missing to cancel
previous entry
Time displacement (= 0
minutes)
Time increment (=+(xx1xx2), non negative to reset
the time to the actual time )
Time period in minutes (=-xx
i.e. from)
Time period in minutes (=-xx
i.e. to)
Time period in minutes (=-xx
i.e. from)
Time period in minutes (=-xx
i.e. to)
And in Template Form:
3 02 067
Additional synoptical parameters
0 01 023
0 04 025
0 02 177
1 01 000
0 31 001
0 20 003
1 02 000
0 31 001
0 05 021
0 20 001
0 05 021
Observation Sequence number
Additional “instantaneous” data
Time period (= 0 minutes)
Method of snow depth measurement
0
Manual observation
1
Ultrasonic method
2
Video camera method
3-13 Reserved
14 Others
15 Missing value
Additional present weather
Delayed replication of 1 descriptor
Delayed descriptor replication factor
Present weather
Visibility in different directions
Delayed replication of 2 descriptor
Delayed descriptor replication factor
Bearing or azimuth
Horizontal visibility
Bearing or azimuth (=set to missing to cancel
previous entry)
Sea data
Numeric, 0
Minute, 0
Code table, 0
960ww
961ww
Numeric, 0
Code table, 0
Numeric, 0
981VV-988VV Degreetrue, 0
VV
m, –1
Degreetrue, 0
1 01 000
0 31 000
3 02 056
0 02 038
0 07 063
0 22 043
0 07 063
1 03 000
0 31 000
0 33 041
0 20 058
0 22 061
1 01 000
0 31 000
3 02 022
0 22 002
0 22 012
0 22 022
1 01 000
0 31 001
3 02 023
0 22 003
0 22 013
0 22 023
1 04 000
0 31 001
0 20 054
0 20 137
0 20 012
0 20 090
1 03 000
0 31 001
0 20 054
0 20 137
0 20 136
0 04 025
0 13 012
0 04 025
0 11 042
(Observations from a coastal station)
Delayed replication of 1 descriptor
Short delayed descriptor replication factor
Sea surface temperature, method of
measurement, and depth below sea surface
Method of sea/water temperature
measurement
Depth below sea/water surface
(for sea surface temperature measurement)
222..
Sea/water temperature
0sTwTwTw
Depth below sea/water surface (set to missing
to cancel the previous value)
Delayed replication of 3 descriptor
Short delayed descriptor replication factor
Attribute of following value
980VsVs
Visibility seawards from a coastal station
924SVs
State of the sea
Delayed replication of 1 descriptor
Short delayed descriptor replication factor
Wind waves
Direction of wind waves
222.. 2PwPw
Period of wind waves
Hw Hw
Height of wind waves
Delayed replication of 1 descriptor
Delayed descriptor replication factor
Swell waves
222.. 3dw1dw1
Direction of swell waves
dw2dw2
4Pw1Pw1,
Period of swell waves
5Pw2Pw2
Hw1Hw1,
Height of swell waves
Hw2Hw2
Clouds
941CDp,
943CLDp
Delayed replication of 4 descriptors
Delayed descriptor replication factor
Da, Dp
True direction from which a phenomenon or
clouds are moving
Evolution of Clouds
940Cn3
941CDp,
Cloud type (C)
943CLDp
993CSDa
Special clouds
Delayed replication of 3 descriptors
Delayed descriptor replication factor
Da
True direction from which a phenomenon or
clouds are moving
Evolution of Clouds
n3, n4
Supplementary Cloud type
948C0Da,
949CaDa,
950Nmn3,
951Nvn4
Additional “period” data
Time period in minutes ( = reference period of
fresh fallen snow )
Depth of fresh snow
Additional wind data
Time period in minutes ( =-60 )
Maximum wind gust speed (10 min mean wind) 912ff
902tt 912ff .. mandatory ff>=18
Numeric, 0
Code table, 0
m, 2
K, 2
m, 2
Numeric, 0
Code tabel, 0
m,-1
Code table, 0
Numeric, 0
Degreetrue, 0
s, 0
m, 1
Numeric, 0
Degreetrue, 0
s, 0
m, 1
Numeric, 0
Degreetrue, 0
Code table, 0
Code table, 0
Code table, 0
Numeric, 0
Degreetrue, 0
Code table, 0
Code table, 0
Minute, 0
m, 2
Minute, 0
m s-1, 1
1 04 000
0 31 001
0 08 021
0 04 025
0 11 042
0 08 021
1 15 000
0 31 001
0 08 021
0 04 015
0 08 021
0 04 025
0 11 001
0 11 002
0 08 021
0 04 015
0 08 021
0 04 025
0 11 001
0 11 002
0 08 021
0 04 025
0 04 015
1 03 000
0 31 001
0 04 025
0 04 025
0 20 003
1 10 000
0 31 001
0 04 025
0 04 025
0 05 021
0 05 021
0 20 054
0 20 024
0 20 025
0 20 026
0 20 027
0 20 063
Delayed replication of 4 descriptor
Delayed descriptor replication factor
Time significance (=30 time of occurrence or
=17 start of phenomenon)
Time displacement (=-xx )
Maximum wind gust speed (10 min mean wind)
Time significance (=set to missing to cancel
previous entry)
Significant change in wind speed and/or
direction
Delayed replication of 15 descriptor
Delayed descriptor replication factor
Time significance (=30 time of occurrence or
=17 start of phenomenon)
Time increment (=-xx1 )
Time significance (= 2 (time averaged))
Time period (= - 10 minutes, or number of
minutes after a significant change of wind)
Wind direction
Wind speed
Time significance (=22 time of occurrence of
wind shift)
Time increment (=+xx2 )
Time significance (= 2 (time averaged))
Time period (= - 10 minutes, or number of
minutes after a significant change of wind)
Wind direction
Wind speed
Time significance (=set to missing to cancel
previous entry)
Time displacement (= 0 minutes)
Time increment (=+(xx1-xx2), non negative to
reset the time to the actual time )
Additional weather
Delayed replication of 6 descriptor
Delayed descriptor replication factor
Time period in minutes (=-xx i.e. from)
Time period in minutes (=-xx i.e. to)
Present weather
Additional 9SpSpspsp groups
Delayed replication of 13 descriptor
Delayed descriptor replication factor
Time period in minutes (=-xx i.e. from)
Time period in minutes (=-xx i.e. to)
Bearing or azimuth *
Bearing or azimuth *
True direction from which a phenomenon or
clouds are moving
Intensity of phenomena
(1= Light, 2 = Moderate, 3 = Heavy, 4 =
Violent, 5 = Severe)
Obscuration
Character of obscuration
Phenomenon occurrence
Special phenomena
Numeric, 0
Code table, 0
902tt
912ff
Minute, 0
m s-1, 1
Code table, 0
e.g. 913ff
904tt 913ff
Numeric, 0
Code table, 0
Minute, 0
Code table, 0
Minute, 0
915dd
913ff
Degreetrue, 0
m s-1, 1
Code table, 0
Minute, 0
Code table, 0
Minute, 0
915dd
913ff
Degreetrue, 0
m s-1, 1
Code table, 0
Minute, 0
Minute, 0
962ww,
963w1w1,
964ww,
965w1w1,
966ww,
967w1w1
Da, Dp
Da, Dp
Da, Dp
Numeric, 0
Minute, 0
Minute, 0
Code table, 0
Numeric, 0
Minute, 0
Minute, 0
Degreetrue, 0
Degreetrue, 0
Degreetrue, 0
Code table, 0
Flag table, 0
Code table, 0
Flag table, 0
Code table, 0