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Re: unit conversions in METAR decoder

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  • Subject: Re: unit conversions in METAR decoder
  • Date: Mon, 21 Aug 2006 15:11:15 -0600 (MDT)
On Tue, 15 Aug 2006, Keith Brewster wrote:

> I was testing my updated NetCDF METAR reader code using some recent
> datafiles (most recent being Aug 11, 2006)  from the THREDDS catalog, and I
> notice there have been some changes in the data since I last worked on
> reader for this type of file.   I have accommodated those changes, some of
> which addressed issues I mentioned last time I was trying this (March of
> 2005).  However I have a problem with how the winds are handled.  The winds
> in kts seem to being converted to m/s and rounded to integer values (but
> stored as real numbers).  If we want to accurately recover the original
> value in integer kts (thus accurately represented the original report), it
> would be helpful to calculated and store them with precision of one decimal
> place.  Previously there had been an issue with the constant being used, it
> should be m/s=kts*0.514444
>

Keith,

i don't know why i thought the wind values need to be integers. anyway, i
am now storing the values as float. tomorrows data files should be
correct.

robb...


>
>
> Thanks,
>
> -Keith
>
>

===============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
address@hidden             WWW: http://www.unidata.ucar.edu/
===============================================================================