<html>
<head>
<style><!--
.hmmessage P
{
margin:0px;
padding:0px
}
body.hmmessage
{
font-size: 12pt;
font-family:Calibri
}
--></style></head>
<body class='hmmessage'><div dir='ltr'>Hi all. <br><br>We all know that formation of hail is sensitive to the CCN present in the atmosphere. I want to know how the spectrum of CCN is defined in the WRF. I must be a part of the microphysics scheme. But I need a some more information on that. <br><br>How can I study the sensitivity of the CCN to the hail formation using the WRF model. <br><br>That would be of great help. <br><br>thanks <br><br>geeta </div></body>
</html>