<html><body><div style="color:#000; background-color:#fff; font-family:Courier New, courier, monaco, monospace, sans-serif;font-size:12pt"><div><span>Hi again</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'Courier New', courier, monaco, monospace, sans-serif; background-color: transparent; font-style: normal; "><span><br></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'Courier New', courier, monaco, monospace, sans-serif; background-color: transparent; font-style: normal; "><span>Ricardo thank you for your answer, i'll experiment with the CICEPsfc and i´ll take a look at Fawbush and Miller.</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'Courier New', courier, monaco, monospace, sans-serif; background-color: transparent; font-style: normal; "><span><br></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'Courier New', courier, monaco, monospace,
sans-serif; background-color: transparent; font-style: normal; "><span>Greetings,</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'Courier New', courier, monaco, monospace, sans-serif; background-color: transparent; font-style: normal; "><span><br></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'Courier New', courier, monaco, monospace, sans-serif; background-color: transparent; font-style: normal; "><span>Guisseppe</span></div><div><br></div> <div style="font-family: 'Courier New', courier, monaco, monospace, sans-serif; font-size: 12pt; "> <div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt; "> <div dir="ltr"> <font size="2" face="Arial"> <hr size="1"> <b><span style="font-weight:bold;">De:</span></b> Ricardo Hallak <hallak@model.iag.usp.br><br> <b><span style="font-weight: bold;">Para:</span></b> Guisseppe Arturo Vasq. <hibiki_inuyasha@yahoo.es>;
GrADS Users Forum <gradsusr@gradsusr.org> <br><b><span style="font-weight: bold;">CC:</span></b> hallak@model.iag.usp.br <br> <b><span style="font-weight: bold;">Enviado:</span></b> Miércoles 26 de septiembre de 2012 9:17<br> <b><span style="font-weight: bold;">Asunto:</span></b> Re: [gradsusr] Help with any "Hail Script"<br> </font> </div> <br><div id="yiv1712245095">
<div>
Hi <font size="2"><font size="2">Guisseppe,
<br>
<br>it is a interesting question.
<br>
<br>You can start taking a look at some GFS variables that are already associated with hail.
<br>For example, you can display a field of CICEPsfc (surface categorical ice pellets [yes=1;0=no]) as a first approach.
<br>
<br>I haven't checked if GFS 0.5 has other variables directly asscoiated with hail, but another way is to calculate the high in which Tw goes to 0. Ideally, hail formation is expected when Tw=0 ºC occurs between 2000 and 3500 m. Take a look at Fawbush and Miller (1953): A method for forecasting haisltone size at the Earth surface. Bull. Amer. Meteoro. Soc., 34, 235-244.
<br>
<br>Hope this helps,
<br>Ricardo
<br></font></font>
<br><font size="2"><b>On Wed, 26 Sep 2012 04:57:42 +0100 (BST), Guisseppe Arturo Vasq.
wrote</b>
<br>> <span>
<br>> </span>
<br>> Hi Ricardo
<br>>
<br>>
Well i use GFS 0.5x0.5 data ... from <a rel="nofollow" target="_blank" href="http://nomads.ncep.noaa.gov/">http://nomads.ncep.noaa.gov/</a>
<br>>
<br>> <font size="2" face="Arial">
<hr size="1"> <b><span style="font-weight:bold;">De:</span></b> Ricardo Hallak
<hallak@model.iag.usp.br>
<br>> <b><span style="font-weight:bold;">Para:</span></b> Guisseppe Arturo Vasq. <hibiki_inuyasha@yahoo.es>;
GrADS Users Forum <gradsusr@gradsusr.org>; "gradsusr@gradsusr.org"
<gradsusr@gradsusr.org>
<br>> <b><span style="font-weight:bold;">CC:</span></b> hallak@model.iag.usp.br
<br>> <b><span style="font-weight:bold;">Enviado:</span></b> Martes 25 de septiembre de 2012
19:58
<br>> <b><span style="font-weight:bold;">Asunto:</span></b> Re:
[gradsusr] Help with any "Hail Script"
<br>> </font>
<br>>
<br>>
Hi <font size="2">Guisseppe,
<br>>
<br>> it is necessary some more information. For example, what kind
of data do you have in
hands?
<br>>
<br>>
Greetings,
<br>>
Ricardo
<br>>
</font>
<br>> <font size="2"><b>On Tue, 25 Sep 2012 20:56:49 +0100 (BST), Guisseppe
Arturo Vasq.
wrote</b>
<br>> > Hi
all,
<br>> >
<br>> >
Greetings!!
<br>> >
<br>> > I want
to know if anyone can help me with any script to see Hail, i would like to know
if it's possible or if i have to mix some variables to get Hail in the
map.
<br>> >
<br>> > Thanks for your
help
<br>> >
<br>> > UNALM university,
Lima-Perú
<br>> >
<br>> > Guisseppe
Vasquez
<br>> >
<br>> > TELMET
S.A.C
<br>>
</font>
<br>
<br>
<br>Ricardo Hallak
<br>
<br>
Departamento de Ciências Atmosféricas (ACA)
<br>
Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG)
<br>
Universidade de São Paulo (USP)
<br>
Rua do Matão, 1226 - Cidade Universitária - São Paulo SP 05508-900
<br>
Phone.: +55 (11) 3091-2850; 3091-4703
<br>
Fax: +55 (11) 3091-4714
<br>
<br>
</font>
</div>
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