Its the pressure on the top of the atmosphere as you want to keep in the model. You can change it if you want the top pressure of the model to be different from this. Otherwise, keep it as it is.

Shekhar

#################################

Dr. M. S. Shekhar

Scientist 'C'

Snow & Avalanche Study Establishment

DRDO R & D Centre, Him Parisar

Sector 37A, Chandigarh

#################################

From: Khurrum Waqas <kwhmet@yahoo.com>
To: regcnet@lists.ictp.it
Subject: [RegCNET] KWH
Date: Sat, 16 Dec 2006 00:30:50 -0800 (PST)

Hi,

In "domain.param", a parameter named "ptop" is given, what is this for ...? What is its physical meanings..?

Do it has only one value (given as 5) or we can change this..?

with regards,

Khurrum Waqas Haider
Meteorologist,
Research and Development Division,
Pakistan Meteorological Department,
P.O. Box 1214, Sector H - 8 / 2
Islamabad - Pakistan.

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