[GEMPAK #VLS-573998]: Adding new parameters in surface SHIP files

> Steve,
> 
> Thanks for your info.  I am relatively new to awk, but I am getting to
> see its usefulness (e.g. can read data and do quick calulations easier
> than writing a Fortran program).  Is there a good reference on awk you
> can recommend?  I am using the GNU online reference and "The Unix
> Programming Environment" by Kernighan/Pike.

Kwan,

Thats as good as I could recommend, The ERE (extended regular expression)
matching is generally cross referenced from AWK to SED or ED.
The ERE matching is a useful tool in editors like vi, so there may
be some documentation there.

Otherwise, may use perl scripts since it has a full range of this type
of capability and may be a little more user friendly.


> 
> I am attempting to find a good way to objectively analyze surface data
> for North America using GEMPAK.  The ideal goal is to have GEMPAK
> generate contours that best fit the observations while keeping them
> relatively smooth.  Do you have some recommendations?  The wide range
> of station spacings and bad obs are the main problems.  I had already
> tested a way that generates satisfactory isobars, but not isotherms or
> isentropes.  Before I explain it in detail, I would like to hear your
> recommendations first.
> 
> Kwan

You may find that it is useful to use the GEMPAK "GUESS" field and supply a 
first guess
from the GFS. That may help in identifying some of the bad data via the QCNTL 
limits in oabsfc.

Steve Chiswell
Unidata User Support

> 
> ----- Original Message -----
> From: Unidata GEMPAK Support <address@hidden>
> Date: Monday, April 2, 2007 5:39 pm
> Subject: [GEMPAK #VLS-573998]: Adding new parameters in surface SHIP
> files
> 
> > > Steve,
> > >
> > > Thanks.  After making the changes, I got the correct results.
> > So in
> > > this way, I could add bogus data to specific lat-lon points, right?
> >
> > Kwan,
> >
> > Yes, you can add BOGUS id station locations this way.
> >
> > >
> > > A related issue concerns the text output from sfedit.  When I
> > put a
> > > long list of surface parameters into a text file using sfedit,
> > if the
> > > data columns are more than 80 characters wide (I suppose) the next
> > > parameter on the list would be printed on the next line.  This is
> > > undesirable if I want the data to be fed into a spreadsheet.
> > Are you
> > > aware of this problem?  I am still using Ver 5.6.k.
> >
> > This isn't a problem with the program, its just the formated IO.
> > You can
> > pass the output file to a filter to concatenate the data to a
> > single line
> > if necessary. One possibility would look be to create an awk
> > script such as
> > the printfil.awk I've attached to this message. You can then pipe
> > your sflist output to awk with this filter such as:
> >
> > cat sflist.fil | awk -f printfil.awk > sflist.xls
> >
> > You could do other things such as making the data comma delineated
> > or
> > whatever format you chose, but always is more flexible to do this
> > outside of a program such as sflist and use tools like awk as needed.
> >
> > Steve Chiswell
> > Unidata User Support
> >
> >
> >
> > >
> > > Kwan
> > >
> > > ----- Original Message -----
> > > From: Unidata GEMPAK Support <support-
> > address@hidden>> Date: Monday, April 2, 2007 4:00 pm
> > > Subject: [GEMPAK #VLS-573998]: Adding new parameters in surface
> SHIP
> > > files
> > >
> > > > Kwan,
> > > >
> > > > When you create your file using SFCFIL, do not list SLAT and SLON
> > > > among the parameters. Eg,
> > > > use:  SFPRMF = TMPC;DWPC;STHA;ALTM;PMSL
> > > >
> > > > When you run sfedit, it will use the SLAT and SLON parameters in
> > > > the input file as station
> > > > data rather than parameters.
> > > >
> > > >
> > > > Steve Chiswell
> > > > Unidata User SUpport
> > > >
> > > >
> > > >
> > > > > Dear GEMPAK users:
> > > > >
> > > > > Is there a way to add a new parameter STHA to a SHIP file?
> > I am
> > > > > trying to use the METAR, SYNOP, and SHIP files together to
> > > > objectively> analyze surface theta and theta-e.  The problem is
> > > > that STHA is a
> > > > > valid parameter in METAR and SYNOP files but not in SHIP.  I
> > have> > > tried creating a new surface SHIP file using sfcfil (see
> > below).> > It
> > > > > created an empty SHIP file.  But as I used sfedit to write
> > the data
> > > > > into the file, it said that the SHIP file did not have the
> > station> > > lat/lon information, even though I had the SLAT and
> > SLON listed
> > > > in the
> > > > > text edit file (see below).  What is wrong?
> > > > >
> > > > > Kwan
> > > > >
> > > > > sfcfil << EOF
> > > > > SFOUTF   = $DIR/buoy-thta.gem
> > > > > SFPRMF   = SLAT;SLON;TMPC;DWPC;STHA;ALTM;PMSL
> > > > > STNFIL   =
> > > > > SHIPFL   = Y
> > > > > TIMSTN   = 1/1500
> > > > > SFFSRC   = SHIP|BUOY
> > > > > r
> > > > >
> > > > > e
> > > > > EOF
> > > > >
> > > > > sfedit << EOF
> > > > > SFEFIL   = buoy.thta
> > > > > SFFILE   = $DIR/BUOY-THTA.gem
> > > > > r
> > > > >
> > > > > e
> > > > > EOF
> > > > >
> > > > > -------------------------------------------------------------
> > ----
> > > > ------
> > > > > --------
> > > > > Content of buoy.thta:
> > > > >
> > > > > PARM = SLAT;SLON;TMPC;DWPC;STHA;ALTM;PMSL
> > > > > STN   YYMMDD/HHMM    SLAT    SLON    TMPC    DWPC    STHA
> > > > > ALTM    PMSL
> > > > > ELTY2  070319/1200   22.40  -57.20    25.5    18.1   296.7
> > 1023.0> > > 1023.0
> > > > > KRLZ  070319/1200   31.60  -80.10    14.0     9.0   284.8
> > 1029.0> > > 1029.0
> > > > > WDD3825  070319/1200   29.60  -79.60    18.0    10.0   289.0
> > > 1026.5
> > > > > 1026.5
> > > > > DACP  070319/1200   41.50 -159.10    10.0     6.1   280.9
> > 1028.0> > > 1028.0
> > > > > WMLH  070319/1200   39.10  -51.50    19.0    18.0   290.5
> > 1020.5> > > 1020.5
> > > > > LAVW4  070319/1200   45.70  -24.00    10.5     8.0   280.3
> > 1042.0> > > 1042.0
> > > > > WVDG  070319/1200   23.50  -67.40    23.9    23.0   295.6
> > 1017.8> > > 1017.8
> > > > > 42362  070319/1200   27.80  -90.70    21.0    13.0   292.2
> > 1023.1> > > 1023.1
> > > > > DBKV  070319/1200   28.10  -15.40    18.6    13.4   290.5
> > 1015.7> > > 1015.7
> > > > > DBBT  070319/1200   28.40  -15.50    18.2    15.3   290.0
> > 1015.9> > > 1015.9
> > > > > LAJS6  070319/1200   17.20  -69.50    26.0    22.0   297.8
> > 1015.5> > > 1015.5
> > > > >
> > > > >
> > > >
> > > >
> > > > Ticket Details
> > > > ===================
> > > > Ticket ID: VLS-573998
> > > > Department: Support GEMPAK
> > > > Priority: Normal
> > > > Status: Closed
> > > >
> > > >
> > >
> > >
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: VLS-573998
> > Department: Support GEMPAK
> > Priority: Normal
> > Status: Closed
> 
> 


Ticket Details
===================
Ticket ID: VLS-573998
Department: Support GEMPAK
Priority: High
Status: Closed