Re: Help in C residence time

Adam

Thanks for response.
I hope someone else from NCL-talk will get time to have a look in detail in my query.
Waiting for the reply from NCL-talk.

Regard

Rashid Rafique

________________________________
From: Adam Phillips [asphilli@ucar.edu]
Sent: Friday, October 18, 2013 10:50 AM
To: Rafique, Rashid; ncl-talk@ucar.edu
Subject: Re: Help in C residence time

Hi Rashid,
So you know, in the future, it's usually best to include your script in your innitial ncl-talk email so users outside of NCAR can look. Looking at your script, I don't see anything wrong NCL coding wise. You're reading in NPP and TOTECOSYSC, setting NPP to @_FillValue where it equals 0, and then dividing TOTECOSYSC by NPP and writing the result to a file to be plotted in an outside programming language. You are grabbing NPP and TOTECOSYSC from a file where you averaged 10 years of monthly CLM data into one timestep. I do not have any experience calculating the C-residence time, so I don't know if that is the proper procedure to go through or not.

If you do not get any further responses on NCL talk, I would suggest posting this question to the CESM bulletin board (http://bb.cgd.ucar.edu/) under "Land Modeling with CLM" under Science Issues. They might be better able to answer whether your calculation method is correct.
Adam

On 10/17/2013 09:38 AM, Rafique, Rashid wrote:
Hi NCL team

I was trying to calculate the C residence time by using two variables "TOTECOSYSC and NPP". I feel like m not doing right because the graphics doesn't look right to me. I also want to give unit in years for residence time of C.

Can you please have a look ?

My files are located at

/glade/scratch/rrafique/archive/RESULTS/CLM4_SpinUp/Last_10_years

the code i am using is "Calculate_residence_time.ncl" and
the data file i am using is "avg_191-200.nc<http://avg_191-200.nc/>"

The map I produced is attached here.

I want to map a spatial distribution of the residence time over globe.

I ll be glad for you help.

Regard

Rashid Rafique

ECOLAB
University of Oklahoma
Norman, OK 73019

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______________________________________________________________
Adam Phillips                                asphilli@ucar.edu<mailto:asphilli@ucar.edu>
NCAR/Climate and Global Dynamics Division       (303) 497-1726
P.O. Box 3000
Boulder, CO 80307-3000    http://www.cgd.ucar.edu/cas/asphilli

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Received on Fri Oct 18 09:58:57 2013