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Re: 20041213: Gempak - dcmetr wrong decoding of SA reports and MLT



FYI:
| STATION NAME :|TC |INDEX| LATITUDE |ELEV|TYP| OBS HOURS OF THE DAY | DAY OF |: :| | PROV :|ID |SYNO | LONGITUDE | | | (READ VERTICALLY) | OBSERV |: :| +======================================================================= =====================================+

SAINT-ANDRE-AVELIN |QUE |Q|MAN| | 45 49 75 04|0195|AU7|000000000011111111112222| | | | SAINT-CELESTIN |QUE |Q|MSC| | 46 12 72 27|0055|AU7|000000000011111111112222| | | | SAINT-CHRYSOSTOME |QUE |Q|MYT| | 45 08 73 46|0055|AU7|000000000011111111112222| | | | SAINT-CONSTANT |QUE |Q|MCT| | 45 20 73 35|0039|AU7|000000000011111111112222| | | | SAINT-LIN-LAURENTIDES |QUE |Q|MLT| | 45 51 73 42|0050|AU7|000000000011111111112222| | | | SAINT-LOUIS |QUE |Q|MLI| | 45 52 73 00|0031|AU7|000000000011111111112222| | | | SAINT-MICHEL-DE-NAPIERVILLE |QUE |Q|MSX| | 45 11 73 37|0059|AU7|000000000011111111112222| | | | SAINT-POLYCARPE |QUE |Q|MPL|71306| 45 18 74 18|0056|AU7|000000000011111111112222| | | | SAINT-ROCK-DES-AULNAIES |QUE |Q|MSR| | 47 17 70 10|0048|AU7|000000000011111111112222| | | | RAWDON |QUE |Q|MWD| | 46 01 73 49|0210|AU7|000000000011111111112222| | | | CHATHAM-BROWSBURG |QUE |Q|MBB| | 45 37 74 25|0075|AU7|000000000011111111112222| | | | COVEY HILL |QUE |Q|MCW| | 45 01 73 52|0262|AU7|000000000011111111112222| | | | FORET MONTMORENCY RCS |QUE |Q|MFM|71212| 47 19 71 09|0673|AU8|000000000011111111112222| | | | LOCHABER |QUE |Q|MHB| | 45 38 75 12|0105|AU7|000000000011111111112222| | | | HARRINGTON |QUE |Q|MHN| | 45 48 74 39|0168|AU7|000000000011111111112222| | | | L'ARTIFICE |QUE |Q|MLA| | 45 04 73 50|0061|AU7|000000000011111111112222| | | | RIGAUD 2 |QUE |Q|MRI|71305| 45 29 74 18|0030|AU7|000000000011111111112222| | | | RUISSEAU CRANBERRY |QUE |Q|MRY| | 45 07 73 41|0059|AU7|000000000011111111112222| | | |

Ref: http://ftp.cmc.ec.gc.ca/metstat/metstat1.txt

Christian Pagé
http://meteocentre.com/    http://meteoalerte.com/

Etudiant au Doctorat en Sciences de l'environnement UQAM
+1 514 987 3000 ext. 2376

On 04-12-13, at 16:50, Unidata Support wrote:


Christian,

One solution would be to rename the US station from MLT in the
station table to KMLT. That way, this station wouldn't match the
MLT "SA" which is probably something like CMLT, since only
those Canadian AUTO8's still come in the modified SA bulletins.

Steve Chiswell

From: "Christian =?ISO-8859-1?Q?Pag=E9?=" <address@hidden>
Organization: UCAR/Unidata
Keywords: 200412132027.iBDKROJi013045

Institution: UQAM
Package Version: 5.7.3
Operating System: IRIX64
Hardware Information: SGI
Inquiry: Hi everyone,

I noticed errors in SA decoding in my current version 5.7.3 of GEMPAK. But MET AR decoding is OK. And the MLT station is not the same as KMLT, but I couldn'
t find which station is MLT SA report.

Double-name with different stations (I suspect MLT is a new station in Canada)
:

2004121320_sao.wmo:KMLT 131958Z AUTO 03003KT 10SM OVC006 M02/M03 A2948 RMK AO2
 SLP993
2004121320_sao.wmo:MLT SA 2000 AUTO8 M M M M/-03/-04/0304/M/M M 97MM=

Wrong decoding:

Example:

GEMPAK-SFLIST>sffile=/io/ldm/data/gempak/surface/sao/ 2004112618_sao.gem
GEMPAK-SFLIST>r
PARM = STID;TMPC

   STN    YYMMDD/HHMM      STID     TMPC
   MLT    041126/1800       MLT   -18.30


MLT SA 1800 AUTO8 M M M M/-01/-09/2710/M/M SOG 02 M 01MM

Parameters requested: SFFILE,AREA,DATTIM,SFPARM,OUTPUT,IDNTYP.
GEMPAK-SFLIST>sffile= /io/ldm/data/gempak/surface/sao/20041125_sao.gem
GEMPAK-SFLIST>r
PARM = STID;TMPC

   STN    YYMMDD/HHMM      STID     TMPC
   MLT    041125/1800       MLT    13.00


KMLT 251806Z AUTO VRB06KT 2SM BR OVC001 13/13 A2919 RMK AO2

Parameters requested: SFFILE,AREA,DATTIM,SFPARM,OUTPUT,IDNTYP.
GEMPAK-SFLIST>dattim=19
GEMPAK-SFLIST>r
PARM = STID;TMPC

   STN    YYMMDD/HHMM      STID     TMPC
   MLT    041125/1900       MLT   -16.10


MLT SA 1900 AUTO8 M M M M/03/01/3111+16/M/M M 02MM

Parameters requested: SFFILE,AREA,DATTIM,SFPARM,OUTPUT,IDNTYP.
GEMPAK-SFLIST>e



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