[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
19990914: gdedit / METAR reports
- Subject: 19990914: gdedit / METAR reports
- Date: Wed, 15 Sep 1999 11:27:19 -0600
>From: Chris Hennon <address@hidden>
>Organization: .
>Keywords: 199909151708.LAA09697
>
>On Tue, 14 Sep 1999, Unidata Support wrote:
>
>>
>> 2) For NWX to list raw metar bulletins (eg the ascii format), you need
>> to be pointing to data files you just FILE from the LDM. NWX uses the
>> ascii data, and not the gempak files that dchrly is converting into GEMPAK
>> format for use in the surface programs. The nwx interface just gives you
>> a point and click lookup into the text file...it does not use the
>> decoded files. It will pull up the entire bulletin that the station
>> exists in.
>>
>> You can use SFLIST with SFPARM=TEXT;SPCL to list the raw individual
>> reports from a decoded Gempak surface file.
>
>OK. So, the procedure would be to run SFLIST, dumping the METAR reports
>to a file (like "99091515.wmo"), then running nwx to display the stations
>from that file?
No...if you want to look at the bulletins in NWX, you would use the LDM FILE
action
in pqact.conf to store the raw metar bulletins in a file like:
DDS|IDS ^S[AP].... .... ([0-3][0-9])([0-2][0-9])
FILE data/surface/sao/(\1:yyyy)(\1:mm)\1\2_sao.wmo
Then you would define RAW_SAO in the Gemenviron script to point to
the data directory that files are being written in to. The wmo extension
in the master.tbl line you show below tells nwx to use files with that in their
name in the $RAW_SAO directory (you should not have gempak format files in that
directory with the "wmo" string in their names). The metar.stn table is the
list of stations that will be plotted as diamonds on the map to click on.
I mentioned that the reports are available from sflist as an alternative
for pulling up the METAR report of the decoded obs.
Steve Chiswell
Unidata User Support
>Could you send along an example of your METAR files and
>the entry in your master.tbl file? I'm still having a
>configuration/understanding problem. nwx is still not finding any
>reports when you click on a station, even though I checked that they are
>in the file. It is either not finding the file or not finding any
>stations. My master.tbl entry looks like this:
>
>OBS_METAR metar.stn M $RAW_SAO wmo
>
>and my filename is "99091515.wmo". This file contains all of the METAR
>reports. Thanks.
>
>Chris
>
>
>
>
>
>>
>>
>> >From: Chris Hennon <address@hidden>
>> >Organization: .
>> >Keywords: 199909142025.OAA09177
>>
>> >Steve -
>> >
>> >I have a couple of questions.
>> >
>> >1) I'm working with gdcfil and gdedit to create a grid I can display in
>> >gempak. When I run gdinfo for my grid file, it looks like this:
>> >**********
>> >
>> > GEMPAK-GDINFO>r
>> >
>> > GRID FILE: simple.grd
>
>> >
>> >
>> > GRID NAVIGATION:
>> > PROJECTION: CED
>> > GRID SIZE: 5 5
>> > LL CORNER: 30.00 -80.00
>> > UR CORNER: 40.00 -70.00
>> >
>> > GRID ANALYSIS BLOCK:
>> > ANALYSIS TYPE: BARNES
>> > DELTAN: 5.000
>> > DELTAX: -9999.000
>> > DELTAY: -9999.000
>> > GRID AREA: 29.00 -81.00 41.00 -69.00
>> > EXTEND AREA: 24.00 -86.00 46.00 -64.00
>> > DATA AREA: 24.00 -86.00 46.00 -64.00
>> >
>> > Number of grids in file: 1
>> >
>> > Maximum number of grids in file: 200
>> >
>> > NUM TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
>> > 1 990913/0000 1000 PRES TMPC
>
>> > Parameters requested: GDFILE,LSTALL,OUTPUT.
>> >
>> >**********
>> >My ascii data file which I added to the grid looks like this:
>> >**********
>> >
>> >Grid file: simple.grd
>> >GRID: TIME1 TIME2 LEVEL1 LEVEL2 VCORD PARM
>> > 990913/0000 1000 PRES TMPC
>> >AREA: DSET GRID SIZE: 5 5
>> >COLUMNS: 1 5 ROWS: 1 5
>> >
>> >Scale factor: 10**0
>> >
>> > COLUMN: 1 2 3 4 5
>> >ROW 5 10.23 11.34 10.67 8.54 9.33
>> >ROW 4 8.56 10.20 10.88 9.87 8.33
>> >ROW 3 10.22 9.98 11.29 10.59 9.34
>> >ROW 2 6.54 7.43 10.04 10.47 9.68
>> >ROW 1 5.89 6.65 9.32 9.03 8.76
>> >
>> >**********
>> >Now, when I run gdlist using the following inputs:
>> >**********
>> >
>> > GDATTIM Grid date/time LAST
>> > GLEVEL Grid level 1000
>> > GVCORD Grid vertical coordinate PRES
>> > GFUNC Scalar grid TMPC
>> > GDFILE Grid file simple.grd
>> > GAREA Graphics area 30;-80;40;-70
>> > PROJ Map projection/angles/margins|dr CED
>> > SCALE Scalar scale / vector scale
>> > OUTPUT Output device/filename T
>> > Parameters requested:
>> >GDATTIM,GLEVEL,GVCORD,GFUNC,GDFILE,GAREA,PROJ,SCALE,
>> > OUTPUT.
>> > GEMPAK-GDLIST> r
>> >
>> >**********
>> >It spits back a scale factor of 10** 1, even though I explicitly specified
>> >the scale factor of 10** 0.
>> >**********
>> >
>> > GDLIST PARAMETERS:
>> >
>> > Grid file: simple.grd
>
>> >
>> > GRID IDENTIFIER:
>> > TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
>> >990913/0000 1000 PRES TMPC
>> >
>> > GAREA: 30;-80;40;-70
>> > SCALE FACTOR : 10** 1
>> > OUTPUT: TERM/
>> >
>> > MINIMUM AND MAXIMUM VALUES 58.90 113.40
>> >
>> >**********
>> >Hence my values are all 10 times too high. What am I missing?
>> >
>> >2) I am trying to display METAR reports in "nwx". No data is ever found.
>> >The entry in the tables/nwx/master.tbl file for METAR reports is:
>> >
>> >OBS_METAR metar.stn R $RAW_SAO gem
>> >
>> >where $RAW_SAO is /usr/local/ldm/data/surface. Within that directory are
>> >the sao files (yyyymmdd_sao.gem). Are these the files that nwx should be
>> >looking for for METAR reports? Or is there something else I should be
>> >looking for or doing? When a station is clicked on the nwx map, a message
>> >such as "No data available for KCLE" is given in the text window.
>> >
>> >As always, thanks for you help.
>> >
>> >Chris
>> >
>> >================================================
>> >| Chris Hennon Ohio State University |
>> >| Tropical Meteorology address@hidden |
>> >| |
>> >| Dept of Geography Office: 1174 Derby Hall |
>> >| 1036 Derby Hall Phone : (614) 292-7518 |
>> >| Columbus, OH 43210 Fax : (614) 292-6213 |
>> >================================================
>> >
>>
>> ****************************************************************************
>> Unidata User Support UCAR Unidata Program
>> (303)497-8644 P.O. Box 3000
>> address@hidden Boulder, CO 80307
>> ----------------------------------------------------------------------------
>> Unidata WWW Service http://www.unidata.ucar.edu/
>> ****************************************************************************
>>
>