[gradsusr] Difference between sflux var's and pgrb var's

[Christopher Gilroy]

Hey Wesley,

Yea I found the WMO discipline cat's, very informative. While I can't find
real specfics on what the current highest-resolution GFS data is, from the
little bit I've been learning the sflux is? I don't believe sflux and
pgrb2.0p25 are the same resolution?

Thanks for the descriptive info on the two vars. They seemed the same to
me, but with the descriptions being a tad different and the disciplines
being different I didn't think they were identical.

On Fri, Oct 16, 2015 at 9:11 AM, Wesley Ebisuzaki - NOAA Federal <
wesley.ebisuzaki at noaa.gov> wrote:

> Hi,
>
> tmp0_10cm is the temperature 0-10 cm below the land surface
> (discipline=meteorological product)
> tsoil0_10cm is the soil temperature 0-10 cm below the land surface
> (discipline=land surface product)
>
> Logically both variables refer to the same quantity.  Originally people
> used the 1st name because
> the 2nd name wasn't defined.  Later the standard defined temperature for
> land-surface, oceanographic,
> hydrological and space-weather products.  So the 2nd name is more
> descriptive and the
> the new preferred name.  The "0,0,0" vs "2,0.2" is because the encoding of
> the two names are
> different (discipline, parameter category and parameter number).
>
> sflux = special flux, usually on (model) Gaussian grid
> pgrb2 = pressure (level) grib2 (often includes contents of sflux file),
> usually on a lat-lon grid
>
> Wesley
>
>
> On Fri, Oct 16, 2015 at 12:27 AM, Christopher Gilroy <
> chris.gilroy at gmail.com> wrote:
>
>> Hey guys, learning grads (let alone model data) and I'm trying to figure
>> out the difference between:
>>
>> sflux:
>> tmp0_10cm  0,106,0,0.1   0,0,0 ** 0-0.1 m below ground Temperature [K]
>> tmp10_40cm  0,106,0.1,0.4   0,0,0 ** 0.1-0.4 m below ground Temperature
>> [K]
>> tmp40_100cm  0,106,0.4,1   0,0,0 ** 0.4-1 m below ground Temperature [K]
>> tmp100_200cm  0,106,1,2   0,0,0 ** 1-2 m below ground Temperature [K]
>>
>> pgrb2:
>> tsoil0_10cm  0,106,0,0.1   2,0,2 ** 0-0.1 m below ground Soil Temperature
>> [K]
>> tsoil10_40cm  0,106,0.1,0.4   2,0,2 ** 0.1-0.4 m below ground Soil
>> Temperature [K]
>> tsoil40_100cm  0,106,0.4,1   2,0,2 ** 0.4-1 m below ground Soil
>> Temperature [K]
>> tsoil100_200cm  0,106,1,2   2,0,2 ** 1-2 m below ground Soil Temperature
>> [K]
>>
>> They somewhat look the same, but the third set of number 0,0,0 and 2,0,2
>> are different obviously, so outside of what "differences" there are between
>> the 2, can anyone explain what the 0,0,0 and 2,0,2 actually means?
>>
>> Secondly, what exactly (maybe why they have so many different types is
>> better) is the difference between the gfs sflux files and the gfs pgrb2
>> files? I know the sflux files don't have all the var's that the pgrb2 files
>> have but the sflux is the highest resolution data available, for the GFS,
>> correct?
>>
>> I appreciate any help.
>>
>> Thanks!
>>
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>>
>
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-- 
-Chris A. Gilroy
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