[Wrf-users] Plotting of WRF runs using ncl shows rain is too dry.

[Pettee, Warren]

Wan Ahmad Ardie,

I had similar difficulties when I was plotting WRF-ARW output with NCL, and found that my answer hidden in a sample script. 

'tendancy' in the example was the rain rate per forecast interval. The problem was fixed for me by using a loop for each interval and subtracting a running total from the RAINNC + RAINC, like in the example.

Sample Script: http://www2.mmm.ucar.edu/wrf/OnLineTutorial/Graphics/NCL/Examples/PRECIP/wrf_Precip.ncl

Hopefully this helps.


Cheers,

Warren Pettee
Undergraduate - Meteorology
Department of Geography and Earth Sciences
University of North Carolina at Charlotte
9201 University City Blvd, Charlotte, NC 28223
wpettee at uncc.edu

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Date: Sat, 7 Jun 2014 06:22:11 -0700 (PDT)
From: Ahmad Wan <ardie_coal at yahoo.com>
Subject: [Wrf-users] Plotting of WRF runs using ncl shows rain is too
        dry.
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On Thursday, June 5, 2014 3:01 PM, Ahmad Wan <ardie_coal at yahoo.com> wrote:



Hello,
I have run several simulations with different physical parameterizations (mp_physics, cu_physics, etc...). When plotted (using NCL) against ERA Interim, and other observations (TRMM, GPCC), the total precipitation (rainc+rainnc) is too dry. In fact it is ~4 times dry. I plotted an annual mean precipitation with all the data.

I am wondering if there is something I should know of, besides the fact that WRF accumulates from the start of simulation. I have done the proper subtraction (minus previous time), but still no solution of problem in sight. (I have checked the uv wind, and everything is in perfect order). Perhaps this is an NCL problem. I would be really grateful for any solution.


(Wan Ahmad Ardie)
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