Tm d07089 template for synoptic reports from fixed land stations suitable for synop data manually encoded in crex




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TM D07089 - TEMPLATE FOR SYNOPTIC REPORTS FROM FIXED LAND STATIONS SUITABLE FOR SYNOP DATA MANUALLY ENCODED IN CREX


D 07 089




Sequence for representation of synoptic reports from a fixed land station suitable for SYNOP data manually encoded in CREX




D 07 087

“Instantaneous” parameters of sequence D07089




D 07 088

“Period” parameters of sequence D07089

Notes:

  1. “Instantaneous” parameter is a parameter that is not coupled to a time period descriptor, e.g. B04024.

  2. “Period” parameter is a parameter that is coupled to a time period descriptor, e.g. B04024.

This CREX template for synoptic reports from fixed land stations further expands as follows:




D 07 087







Instantaneous” parameters of sequence D07089













Surface station identification, time, horizontal and vertical coordinates

in CREX




D 01 001

B 01 001

WMO block number II

Numeric, 0, 2







B 01 002

WMO station number iii

Numeric, 0, 3




B 02 001




Type of station (ix)

Code table, 0, 1




D 01 011

B 04 001

Year

Year, 0, 4







B 04 002

Month

Month, 0, 2







B 04 003

Day YY

Day, 0, 2




D 01 012

B 04 004

Hour GG

Hour, 0, 2







B 04 005

Minute gg

Minute, 0, 2




D 01 023

B 05 002

Latitude (course accuracy)

Degree, 2, 4







B 06 002

Longitude (course accuracy)

Degree, 2, 5




B 07 030




Height of station ground above msl

m, 1, 5




B 07 031




Height of barometer above msl

m, 1, 5










Pressure data







D 02 001

B 10 004

Pressure PoPoPoPo

Pa, –1, 5







B 10 051

Pressure reduced to mean sea level PPPP

Pa, –1, 5







B 10 061

3-hour pressure change ppp

Pa, –1, 4







B 10 063

Characteristic of pressure tendency a

Code table, 0, 2




B 10 062




24-hour pressure change p24p24p24

Pa, –1, 4




B 07 004




Pressure (standard level) a3

= 925, 850, 700, ..hPa

= missing for lowland stations


Pa, –1, 5




B 10 009




Geopotential height of the standard level hhh

= missing for lowland stations



gpm, 0, 5










Temperature and humidity







B 07 032




Height of sensor above local ground

(for temperature measurement)



m, 2, 5




B 12 101




Temperature/dry-bulb temperature (sc. 2) snTTT

°C, 2, 4




B 12 103




Dew-point temperature (sc. 2) snTdTdTd

°C, 2, 4




B 13 003




Relative humidity

%, 0, 3




B 07 032



Height of sensor above local ground

(set to missing to cancel the previous value)

m, 2, 5










Visibility







B 20 001




Horizontal visibility VV

m, –1, 4










Cloud data







D 02 004

B 20 010

Cloud cover (total) N

If N = 9, then B 20 010 = 113 %,

if N = /, then B 20 010 = missing.


%, 0, 3







B 08 002

Vertical significance

if CL are observed, then B 08 002 = 7 (low cloud),

if CL are not observed and CM are observed,

then B 08 002 = 8 (middle cloud),

if only CH are observed, B 08 002 = 0,

if N = 9, then B 08 002 = 5,

if N = 0, then B 08 002 = 62,

if N = /, then B 08 002 = missing.



Code table, 0, 2







B 20 011

Cloud amount (of low or middle clouds) Nh

If N = 0, then B 20 011 = 0,

if N = 9, then B 20 011 = 9,

if N = /, then B 20 011 = missing.



Code table, 0, 2







B 20 013

Height of base of cloud h

If N = 0 or /, then B 20 013 = missing.



m, –1, 4







B 20 012

Cloud type (low clouds) CL

B 20 012 = CL + 30,

if N = 0, then B 20 012 = 30,

if N = 9 or /, then B 20 012 = 62.



Code table, 0, 2







B 20 012

Cloud type (middle clouds) CM

B 20 012 = CM + 20,

if N = 0, then B 20 012 = 20,

if N = 9 or / or CM = /, then B 20 012 = 61.



Code table, 0, 2







B 20 012

Cloud type (high clouds) CH

0 20 012 = CH + 10,

if N = 0, then B 20 012 = 10,

if N = 9 or / or CH = /, then B 20 012 = 60.



Code table, 0, 2




R 01 000




Delayed replication of the next 1 descriptor







D 02 005

B 08 002

Vertical significance

In any Cb layer, B 08 002 = 4 , else:

in the first replication:

if N = 9, then B 08 002 = 5,

if N = /, then B 08 002 = missing,

else B 08 002 = 1;

in the other replications B 08 002 = 2, 3, 4.


Code table, 0, 2







B 20 011

Cloud amount Ns

In the first replication:

If N = /, then B 20 011 = missing,

else B 20 011 = Ns;

in the other replications B 20 011 = Ns.


Code table, 0, 2







B 20 012

Cloud type C

if N = 9 or /, then B 20 012 = missing,

else B 20 012 = C.


Code table, 0, 2







B 20 013

Height of base of cloud hshs

m, -1, 4
















D 07 088







Period” parameters of sequence D 07 089













Present and past weather







B 20 003




Present weather ww

Code table, 0, 3




B 04 024




Time period

At 00, 06, 12, 18 UTC = - 6.

At 03, 09,15, 21 UTC = - 3.


Hour, 0, 4




B 20 004




Past weather (1) W1

Code table, 0, 2




B 20 005




Past weather (2) W2

Code table, 0, 2








Evaporation







B 04 024




Time period in hours = - 24

Hour, 0, 4




B 02 004




Type of instrument for evaporation or iE

crop type for evapotranspiration



Code table, 0, 2




B 13 033




Evaporation /evapotranspiration EEE

kg m-2, 1, 4





Sunshine







R 02 002




Replicate next 2 descriptors 2 times







B 04 024




Time period in hours

In the first replication = - 24,

in the second replication = - 1.


Hour, 0, 4




B 14 031




Total sunshine in minutes

In the first replication SSS

in the second replication SS


Minute, 0, 4








Precipitation







R 02 002




Replicate next 2 descriptors 2 times







B 04 024




Time period in hours tR

Hour, 0, 4




B 13 011




Total precipitation RRR

no precipitation = 0

trace = - 0.1


kg m-2, 1, 5

Encoded as:

-00001











Extreme temperatures







B 07 032




Height of sensor above local ground

(for temperature measurement)



m, 2, 5




B 04 024




Time period in hours = - 12

Hour, 0, 4




B 12 111




Maximum temperature at height and over period

specified snTxTxTx



°C, 2, 4





B 04 024




Time period in hours = - 12

Hour, 0, 4




B 12 112




Minimum temperature at height and over period specified snTnTnTn

°C, 2, 4











Wind data







B 07 032




Height of sensor above local ground

(for wind measurement)



m, 2, 5




B 02 002




Type for instrumentation for wind measurement

iw

Flag table, 0, 2




B 08 021




Time significance = 2 (time averaged)

Code table, 0, 2




B 04 025




Time period = - 10

(or number of minutes after a significant change of wind, if any)



Minute, 0, 4




B 11 001




Wind direction dd

If dd = 00 (calm) or dd = 99 (variable), B 11 001 = 0.



Degree true, 0, 3




B 11 002




Wind speed ff

m s-1, 1, 4




B 08 021




Time significance

(set to missing to cancel the previous value)



Code table, 0, 2

Notes:

  1. CREX Edition 1 is recommended for manual encoding of data.

  2. If the addition of another “instantaneous” parameter is required, the sequence descriptor D07089 shall be replaced by D07087 D07088, and the B-descriptor for this parameter shall be placed between D07087 and D07088.

  3. If the addition of another “period” parameter is required, the sequence D 07 089 shall be supplemented by the relevant B-descriptor provided no additional “instantaneous” parameter is needed.


Example

CREX++


T000103 A000 D07089++

63 894 1 2006 02 22 06 00 -0687 03920 00552 00564 10062 10122 //// // 0000 ///// ///// 00125 2900 2320 071 ///// 2500 038 07 03 0073 31 20 10 0001 01 03 08 0073 005 -0006 00 00 -0024 01 0085 -0024 0690 -0001 0060 -0024 00000 //// ///// 00125 //// //// -0012 2210 01000 14 02 -0010 060 0025 //++


7777

Example with optional check digits:

CREX++


T000103 A000 D07089 E++

063 1894 21 32006 402 522 606 700 8-0687 903920 000552 100564 210062 310122 4//// 5// 60000 7///// 8///// 900125 02900 12320 2071 3///// 42500 5038 607 703 80073 931 020 110 20001 301 403 508 60073 7005 8-0006 900 000 1-0024 201 30085 4-0024 50690

6-0001 70060 8-0024 900000 0//// 1///// 200125 3//// 4//// 5-0012 62210 701000 814 902

0-0010 1060 20025 3//++


7777


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