[Met_help] ascii2nc question (Level)

[John Halley Gotway]

Jonathan,

You can set it to -9999 for missing.

When using Point-Stat to verify at the surface, remember that the level information is not actually used.  Instead, it's just the message type.  Observations with message type "APDSFC" or "SFCSHP" are
matched to forecasts at the surface.  For verification of pressure levels, the level information of the observations are actually used.

If you're using any observations of accumulated precipitation, the level field should be set to the accumulation interval of the precip, e.g. a value of 12 indicates 12 hours of accumulation.

Hope that helps.

John

Case, Jonathan (MSFC-VP61)[Other] wrote:
> John,
> 
> Sorry -- I meant to include this piece of info in the previous email.  If the station pressure from a sfc obs is not available, then what should we set the "Level" to?
> 
> Jonathan
> 
>> -----Original Message-----
>> From: Case, Jonathan (MSFC-VP61)[Other]
>> Sent: Monday, March 02, 2009 1:47 PM
>> To: 'John Halley Gotway'
>> Subject: ascii2nc question (Level)
>>
>> John,
>>
>> I have a question on the "Level" parameter in the required ascii2nc
>> input (column 8 from the table in section 3.6 of the MET v1.1 User's
>> Guide).  When we're converting surface observations, would this value
>> be equivalent to surface/station pressure?
>>
>> Thanks!
>> Jonathan
>>
>> ***********************************************************
>> Jonathan Case, ENSCO, Inc.
>> Aerospace Sciences & Engineering Division
>> Short-term Prediction Research and Transition Center
>> 320 Sparkman Drive, Room 3062
>> Huntsville, AL 35805-1912
>> Voice: (256) 961-7504   Fax: (256) 961-7788
>> Emails: Jonathan.Case-1 at nasa.gov
>>         case.jonathan at ensco.com
>> ***********************************************************
>>
>>