[gradsusr] GFS Precipitation

[Eric Altshuler]

Adrian,

GFS total accumulated precip (apcpsfc) includes all forms of precipitation that reaches the surface during the accumulation period. For forecast hours evenly divisible by 6, the accumulation period is from T-6h to T, while for other forecast hours (divisible by 3 but not 6) it is from T-3h to T.

Best regards,

Eric L. Altshuler
Assistant Research Scientist
Center for Ocean-Land-Atmosphere Studies
4041 Powder Mill Road, Suite 302
Calverton, MD 20705-3106
USA

E-mail: ela at cola.iges.org
Phone: (301) 902-1257
Fax: (301) 595-9793

----- Original Message -----
From: "Adrian Scherzinger" <adrian.scherzinger at meteotest.ch>
To: gradsusr at gradsusr.org
Sent: Monday, May 7, 2012 7:19:57 AM
Subject: [gradsusr] GFS Precipitation

Hi

I have a question about total precipitation in GFS. I got cunfused when 
I was looking at precipitation forecast in high altitudes (Himalaya):

Does the accumulated precipitation at surface (apcpsfc) include solid 
precipitation (e.g snow, graupel)? Or do I have to include other 
parameters like Accumulated Snow to get the real total precipitation?

Any help is appreciated!

Adrian

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adrian.scherzinger at meteotest.ch
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