[gradsusr] Problem in calculating moisture convergence at 200 hpa level.

[Mohsen Soltani]

Dear Arlindo;



May I ask you please send the scripts, which you used to calculate the
moisture convergence at 850-hPa and 500-hPa levels to me?



Thank you!

Mohsen



--
Best Wishes,
(Mr.) Mohsen Soltani
Climatology Grad Student (M.Sc.),
Faculty of Geography, University of Tehran, Tehran, Iran
Tel: (+98) 9119772934
e-mail: soltani.clima at gmail.com


On Fri, Feb 1, 2013 at 11:12 PM, Rabah Hachelaf <r.hachelaf at gmail.com>wrote:

> Hello,
> It is not a good idea to calculat moisture convergence,because
> Beyond 500 the humidity is very rare in the atmosphere, and cloud systems
> using the existing moisture in the lower layers
>
>
> Best regards
>
> Rabah
>
>
> 2013/2/1 Arlindo Meque <mequitomz at yahoo.com.br>
>
>>
>> **
>>  Dear all.
>>
>> I'm trying to compute moisture convergence at 200 hpa. I've successfully
>> done the calculations for 850 and 500 hpa. But for 200 hpa I am getting a
>> very strange output, please see the attachment.
>>
>>
>> This is the small script I am using for that purpose:
>>
>>  'reinit'
>> 'reset'
>> 'sdfopen era.uq200.nc '
>> 'sdfopen era.vq200.nc'
>>  'set t 1 last'
>> 'define diveuq= -(fish_div(u.1,v.2))'
>> 'define mconv=diveuq'
>> 'set sdfwrite ERA.mconv.200.nc <http://era.mconv.200.nc/>'
>> 'sdfwrite mconv'
>>
>> "era.uq200.nc" is a U wind component at 200 hpa level multiplied by the
>> specific humidiry athe the same level.
>>
>> Any idea?
>>
>>
>> Arlindo
>>
>>
>>
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>>
>>
>
>
> --
> Cordialement,
> Best regards,
> Rabah Hachelaf
>
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