<html>
<head>
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<p>I may be wrong, but isn't it something what Ivan (Meteoadriatic)
had asked not so long before? <br>
</p>
<p>NOAA's "new" hourly input in general, "makes no sense".... So
far as I know, values are accumulated/averaged, in every 6th step.
<br>
</p>
<p>Hourly output should be "corrected" to get the right value....</p>
<p>Regarding GFS, I stick to get total cloud for every 6th hour, or
I calculate the 6 hour average..... Not using hourly values.</p>
<p><br>
</p>
<p>Marian - EmsiWx.<br>
</p>
<br>
<div class="moz-cite-prefix">Dňa 2. 11. 2016 o 22:08 Jeff Duda
napísal(a):<br>
</div>
<blockquote
cite="mid:CAAig09AXMJ4VDzMCVrydVkkZWXdy7ZYM+Af0k5ozKsEW39UfBQ@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>
<div>It seems a little strange to me that the total cloud
cover product would be averaged over time. Is that really
the case?<br>
<br>
</div>
Anyway, if you really do have an average over overlapping and
increasing windows, with nothing else to go on and without
applying the equations of motion in reverse, you'd have to
assume a linear averaging, so subtraction of subsequent slices
of the field (i.e., tcdcclm - tcdcclm(t-1)) would give you
piecewise temporal averages. However, that method would give
you negative cloud cover values which is clearly nonsensical,
which again is why I question whether or not that array
contains a temporal average. That just doesn't make a lot of
sense.<br>
<br>
</div>
Jeff Duda<br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Nov 2, 2016 at 3:27 PM, Sam
Wilson <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:sam@surfline.com" target="_blank">sam@surfline.com</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;color:rgb(0,0,0);font-size:14px;font-family:Calibri,sans-serif">
<div>Hi,</div>
<div><br>
</div>
<div>I’m working with hourly GFS total cloud cover
(TCDCclm) and I’m a bit stumped on the following..</div>
<div><br>
</div>
<div>Given TCDCclm for hours 0-1, 0-2, 0-3, 0-4, 0-5, and
0-6, what is the proper way to determine TCDCclm for
hours 1-2, 2-3, 3-4, 4-5, and 5-6?</div>
<div><br>
</div>
<div>I may be making the problem more difficult than it
is..but wanted to ping this group to be sure.</div>
<div><br>
</div>
<div>
<div>Is there an existing grads script that handles this
already and if not, does anyone here have any insight?</div>
</div>
<div><br>
</div>
<div>Thanks so much for your time.</div>
<div><br>
</div>
<div>Best,</div>
<div>Sam</div>
</div>
<br>
______________________________<wbr>_________________<br>
gradsusr mailing list<br>
<a moz-do-not-send="true"
href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a><br>
<a moz-do-not-send="true"
href="http://gradsusr.org/mailman/listinfo/gradsusr"
rel="noreferrer" target="_blank">http://gradsusr.org/mailman/<wbr>listinfo/gradsusr</a><br>
<br>
</blockquote>
</div>
<br>
<br clear="all">
<br>
-- <br>
<div class="gmail_signature" data-smartmail="gmail_signature">
<div dir="ltr">
<div>Jeff Duda<br>
Post-doctoral research associate<br>
University of Oklahoma School of Meteorology<br>
</div>
</div>
</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
gradsusr mailing list
<a class="moz-txt-link-abbreviated" href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a>
<a class="moz-txt-link-freetext" href="http://gradsusr.org/mailman/listinfo/gradsusr">http://gradsusr.org/mailman/listinfo/gradsusr</a>
</pre>
</blockquote>
<br>
</body>
</html>