Hi there,
If PR[L=1560] is the start June in your data set, then PR[L=1560:1824:12] is a time series of all June months. Similarly, PR[L=1561:1824:12] and PR[L=1562:1824:12] are July and August, respectively.
Hence the sum of JJA of every year: let monsoon = PR[L=1560:1824:12]+ PR[L=1561:1824:12] +PR[L=1562:1824:12]
then monsoon[L=@ave] gives the average of all summers
Best, Fisseha
--- On Tue, 9/11/12, Luke Alexander Parsons <lukeaparsons@xxxxxxxxxxxxxxxxx> wrote:
From: Luke Alexander Parsons <lukeaparsons@xxxxxxxxxxxxxxxxx> Subject: Re: [ferret_users] Plotting monsoonal monthly average over
a series of years To: ferret_users@xxxxxxxx Date: Tuesday, September 11, 2012, 12:06 PM
Thank you for your help. I think I understand what you are attempting to do, but it doesn't seem to be working. Could you also please explain what the "start_June:end:12" signifies? Here is my input:
let monsoon = PR[L=start_June:end:12]+PR[L=start_July:end:12]+PR[start_August:end:12] shade monsoon[L=@ave] However, when I try your method, Ferret responds: ERROR: command syntax: START_AUGUST
Any suggestions as to how to fix this? On Mon, Sep 10, 2012 at 4:43 PM, FISSEHA G. BERHANE <fishcivilmu@xxxxxxxxx> wrote:
Hi there;
One possible way:
let monsoon = pr[l=start_June:end:12]+pr[l=start_July:end:12]+pr[l=start_August:end:12]
shade monsoon[l=@ave]
Best, Fisseha
--- On Mon, 9/10/12, Luke Alexander Parsons <lukeaparsons@xxxxxxxxxxxxxxxxx> wrote:
From: Luke Alexander Parsons <lukeaparsons@xxxxxxxxxxxxxxxxx> Subject: [ferret_users] Plotting monsoonal monthly average over a series of years
To: ferret_users@xxxxxxxx Date: Monday, September 10, 2012, 7:08 PMMy monthly precipitation climate model output data approximately starts in 1850 and continues to the 2005 (approx.
L=1:1872). I am interested in plotting average precipitation on a world map during the summer monsoon of June, July, and August from 1980 to 2000. I am familiar with PR[L=1560:1824@AVE] to plot the average precipitation from all the months between these time periods, but I am unsure as to how to remove all the months except J, J, A. Thank you for your help!
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