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20010628: Gempak<-dss/sfc adp

John,

I'd be happy to help you with this data. I'll give you the parameters
of my time constraints. I need to get a new GEMPAK release out shortly 
so that I can get all the documentation updated for the GEMPAK workshop 
July 30-Aug 1. I will also be updating the workshop materials.

After that, I am fairly free until Aug 18-26 when I'll be out of town.

I can probably help you most readily with the steps of programming
to create the GEMPAK file and write out the data etc. once you
have your adp stubs acessing the input data.

The primary output to a GEMPAK file will be the fortran REAL data
array. GEMPAK is well versed with routines to query the data set to see 
if a station has reported data at a time, so that you can merge
your archived data into the mix.

Steve Chiswell
Unidata User Support



>From: John Merrill <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200106282023.f5SKNT114655

>Dear Mr. Chiswell:
>  Last November it was, I think, that we talked about my desire to create
>Gempak data files from SCD/DSS surface adp data files. You indicated that
>you'd be willing to "craft" linkages with the Gempak library routines for
>this purpose. You talked about important preparatory questions, such as
>how many stations, times and such size-dterminant parameters I'd want. 
>I've not finalized those choices, and am only now spinning some of the DSS
>data files on my local disk. We just began the process of learning how to
>read them with the latest version of the (still recognizable, grizzled)
>surface adp software. (We've done this before, and I am approaching it
>with deliberation because I will need to develop Station History tables as
>well as Gempak data files. 
>  Most importantly, I've not used the Gempak libraries myself. I have a
>capable programmer, and I am confident that we can handle the intricacies.
>Please let me know if you can fit this in to your schedule, and with what
>limitations. My immediate need relates to ACE-Asia, for which we have
>loads of data, including daily Gempak files acquired in real time. I want
>to "challenge" these with the DSS data, to learn how many missing reports
>show up after the operational cutoff, etc. Also, but over the longer term,
>I have to go back to earlier years using the DSS archive, times for which
>I don't have the data in Gempak files.
>  Phew, sorry for a long-winded message. I hope things are well at the
>UPC.                                         John
>
>
>John Merrill                                     Telephone:  401-874-6715
>Graduate School of Oceanography, URI             Fax:        401-874-6898
>