Hello

Inhibition of dust emission by snow cover is not activated properly in regcm4.1 . There is a commented line in the dust emission routine when fluxes are aggregated form the texture to the gridscale level that account for grid snow cover. The snow cover ( or snow mask ) variable should be passed by argument from the emission driver routine : be carefull we cannot use directly module variable because dust routine are called on a 'reduced grid' containing only desert and semi desert point. An other option is to wait for the next bugfix release , for which we will activate this option . Sorry about that.

Fabien

On 08/04/2011 06:47 AM, suxingtao@sina.com wrote:

Thanks very much for your kind reply, but I still have some doubts. For example, is dust-emssion still occurs on deserts or semi-deserts with snow covered in winter? Is the effect of snow considered in dust emission sheme? Thanks a lot again.

Su

----- 原始邮件 -----
发件人：Mirkana Degenie <mirkanag@yahoo.com>
收件人：suxingtao@sina.com
主题：Re: [RegCNET] about snow cover in dust module
日期：2011-8-4 04:13:12

Dust is emitted from desert and semidesert(in the newer versions) areas. If the land cover is other than these, there is no dust emission, if I get your point...

From: "suxingtao@sina.com" <suxingtao@sina.com>
To: RegCM讨论区 <regcnet@lists.ictp.it>
Sent: Tue, August 2, 2011 9:28:02 PM
Subject: [RegCNET] about snow cover in dust module

Dear all friends,

I am sorry to take your time, but I want to know if the impact of snow cover is considered in dust emission module in present RegCM4.1.1 model.Thanks very much in advance.

Su

Nanjing,China
_______________________________________________
RegCNET mailing list
RegCNET@lists.ictp.it
https://lists.ictp.it/mailman/listinfo.cgi/regcnet