<div dir="ltr"><div><div>Yup... I had quite a bit of "fun" setting up my total precip scripts, especially with the NAM (which actually has different standards for the precip data depending on which run of the day it is).<br><br></div>Joey<br></div>InstantWeatherMaps.com<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Aug 17, 2015 at 10:10 AM, Jennifer Adams <span dir="ltr"><<a href="mailto:jma@cola.iges.org" target="_blank">jma@cola.iges.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">I have only one thing to add, and that is to be careful about accumulation periods. For the GFS 3-hourly data, the files at hour 03, 09, 15, and 21 are all 3hr accumulations, but hours 00, 06, 12, and 18 are 6-hour accumulations. If you have a 3-hourly time series, you should use the optional tinc argument in the call to sum, e.g.:<div><br></div><div>ga-> d sum(p,t=1,t=81,2)</div><div><br><div>—Jennifer</div><div><div><div class="h5"><br><div><div>On Aug 5, 2015, at 6:21 AM, Brian Gaze <<a href="mailto:brian.gaze@NTLWORLD.COM" target="_blank">brian.gaze@NTLWORLD.COM</a>> wrote:</div><br><blockquote type="cite"><div dir="ltr">Perfect. Thanks Jim.<br><div class="gmail_extra"><br><div class="gmail_quote">On 4 August 2015 at 20:45, James T. Potemra <span dir="ltr"><<a href="mailto:jimp@hawaii.edu" target="_blank">jimp@hawaii.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
Hi Brian,<br>
<br>
Sorry, yeah you'll have to concatenate the files together. But, you
can do that with the template option in grads. An explanation is
given at <a href="http://www.iges.org/grads/gadoc/templates.html" target="_blank">http://www.iges.org/grads/gadoc/templates.html</a>.<br>
<br>
Jim<div><div><br>
<br>
<div>On 8/3/15 8:29 PM, Brian Gaze wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div>Thanks Jim.</div>
<div><br>
</div>
<div>Understand the function, but to use does it require me to
first concatenate the individual grib2 files together for each
time step required?</div>
<div><br>
</div>
<div>Brian</div>
<div><br>
</div>
<br>
<div class="gmail_extra"><br>
<div class="gmail_quote">On 4 August 2015 at 02:59, James T.
Potemra <span dir="ltr"><<a href="mailto:jimp@hawaii.edu" target="_blank">jimp@hawaii.edu</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> Hi Brian,<br>
<br>
You should be able to use the GrADS function "sum",
e.g., 'd sum(precip,t=1,t=384)'.<br>
<br>
Jim
<div>
<div><br>
<br>
<div>On 8/3/15 10:46 AM, Brian Gaze wrote:<br>
</div>
</div>
</div>
<blockquote type="cite">
<div>
<div>
<div dir="ltr">
<div>Hi,</div>
<div><br>
</div>
I'd like to be able to plot a chart using
shading and contours for a lat long range
(rather than single point) which displays the
total accumulated precipitation for a series of
time steps rather than each individual one in
the GFS run. For example, total precipitation
for 0 to 384 hours, lat 30 to 60, lon -45 -60.
<div><br>
</div>
<div>The GFS grib2 files don't seem to contain a
variable with this data so I'm guessing it's
necessary to sum precipitation values from
each individual file? Any suggestions for the
best way to go about this?</div>
<div><br>
</div>
<div>Thanks</div>
<div><br>
</div>
<div>BWG</div>
</div>
<br>
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