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20010906: McIDAS; SFCMG and off-hours reports
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- Subject: 20010906: McIDAS; SFCMG and off-hours reports
- Date: Thu, 06 Sep 2001 14:01:41 -0600
>From: Christian Page <address@hidden> >Organization: Universite du Quebec a Montreal >Keywords: 200109060800.f8680j120055 McIDAS-X SFCMG Christian, >I try to plot with SFCMG some meteograms. It works fine for stations that >report metars around :00. Example: >http://www.sca.uqam.ca/cgi-bin-loc/get_meteogram?LFBO (France Toulouse) >http://www.sca.uqam.ca/cgi-bin-loc/get_meteogram?CYUL (Canada Dorval) OK. >But if I try for Geneva, Switzerland: >http://www.sca.uqam.ca/cgi-bin-loc/get_meteogram?LSGG >I get almost no data. Listing corresponding METARs show that reports are done >at :20 and :50. Is this the problem? The reports at :20 are specials. This can be seen from a PTLIST listing (this is an abbreviated listing created from the Data Lists action under the Information dropdown list in the MCGUI): SFCLIST LSGG DATASET=RTPTSRC/SFCHOURLY SPAN=DAY DAY=2001249 TIME=7 19 OPTION=ALL Day Time StCo Stn T Td Dir Spd Gus AltSet Vis Weather Ceil Cld1 ... hhmm id [F] [F] [ kts ] [mb] [mi] [8ths/100s o... ---- ---- ---- ----- --- --- --- --- --- ------ ----- -------- ----- ----- ... 6 0650 SW LSGG 48 43 000 0 1020.0 7.00 3/035 ... S 6 0720 SW LSGG 52 45 100 1 1020.0 7.00 3/035 ... 6 0750 SW LSGG 54 45 150 1 1020.0 7.00 3/035 ... S 6 0820 SW LSGG 54 45 070 3 1020.0 7.00 3/030 ... 6 1050 SW LSGG 59 45 070 5 1019.0 7.00 3/035 ... S 6 1120 SW LSGG 59 45 020 6 1019.0 7.00 3/035 ... S 6 1220 SW LSGG 61 43 090 5 1019.0 7.00 3/035 ... S 6 1320 SW LSGG 63 43 010 2 1018.0 7.00 3/035 ... 6 1350 SW LSGG 63 41 080 3 1018.0 7.00 5/100 3/035 ... S 6 1420 SW LSGG 63 41 060 4 1018.0 7.00 5/100 3/080 ... S 6 1520 SW LSGG 61 41 060 3 1017.0 7.00 5/100 3/080 ... S 6 1620 SW LSGG 61 43 070 3 1017.0 7.00 5/110 3/070 ... 6 1650 SW LSGG 61 43 050 3 1017.0 7.00 5/110 3/070 ... S 6 1720 SW LSGG 61 45 060 1 1017.0 7.00 5/110 3/040 ... 6 1750 SW LSGG 59 45 050 1 1017.0 7.00 W 5/100 3/038 ... S 6 1820 SW LSGG 59 46 000 0 1017.0 7.00 W 5/055 3/038 ... S 6 1920 SW LSGG 57 50 080 2 1018.0 7.00 RW- 5/040 3/010 ... Number of reports = 17 SFCLIST: done The entries above that are specials are taged with an S in column 1. You can see that these are all from :20 past the hour. SFCMG is just plotting the routine (hourly for METARs; three-hourly for SYNOPTIC obs) reports only. >Also, for LFBO, reports are also available at :30. Are they included in >the plot? Since these are also specials, they are not included. >Can the INT keyword be set so that it plots all the data? No. >I tried with INT=0 or INT=0.5 or INT=ALL without success... I looked into the code and see that all special reports are thrown out after the data has been received from the server. It seems to me that one might like to be able to specify that all observations are to be plotted, not just the standard hourly observations. Given this, I hacked up sfcmg.c to see if this could be done. The results of the test can be seen in the followin: standard SFCMG invocation: http://www.unidata.ucar.edu/staff/tom/gifs/sfcmgstd.gif enhanced SFCMG http://www.unidata.ucar.edu/staff/tom/gifs/sfcmgall.gif Since I believe that this is what you are looking for, I will roll the new sfcmg.c code into my next addendum for 7.80, 7.802. You can upgrade your system to use the new version of SFCMG as follows: <login to your workstation as 'mcidas'> cd mcidas7.8/update ftp ftp.unidata.ucar.edu <user> umcidas <pass> XXXXXX cd unix/780/bugfix binary get mcupdate.tar.Z quit ./mcunpack cd ../src make mcx make install.mcx After installing the new code (last step above), you should give the new SFCMG a quick test: SF 1 SFCMG LSGG SF 2 SFCMG LSGG TYPE=ALL LB 1 2 TERM L ON The new addition is the TYPE= keyword. This allows one to produce either the standard plot (TYPE=STD, TYPE=X; this is the default) or one with all observations on it (TYPE=ALL). Let me know if this is not what you had in mind. Tom
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