Re: problem about function dpres_plevel

Hi,
    Sorry for missing the information in my previous script. Actually I got
the dp or dpp values from the right function,
while sent you the missing one. I posted the completed one here, you'll find
what I have got through a little trying.

    Thanks,

    Yan

  ; PRESSURE (hPa)
  plev = (/ 1000.,950.,900.,850.,800.,750.,700.,650.,600., \
             550.,500.,450.,400.,350.,300.,250.,200. /)
  plev = plev*100.
  plev@units ="Pa" ; Pa = kg/(m s2) (Pascal)
  ptop =min (plev)

  psfc = 1018*100.
  psfc@units ="Pa"

  dp = dpres_plevel(plev,psfc,ptop,0);

  rdp=dpres_plevel(plev,ptop,psfc,0); ==0

  print(rdp)
  print(dp)

On Mon, Nov 8, 2010 at 12:32 PM, Dennis Shea <shea@ucar.edu> wrote:

> The function "dpres_plevel" requires 4 arguments. You specified 3. Try:
>
> dp = dpres_plevel(plev,psfc,ptop,0)
>
> Good luck
>
>
> On 11/08/2010 11:59 AM, Yan Bao wrote:
>
>> Hi, Everyone
>> I'd like to get the thickness of pressure levels with
>> dpres_plevel function , and found if I did
>> it from top atmosphere to surface , all the thicknesses I got are zero
>> (See my testing script).
>> Does any one know how I can make that? Is it right I only need to add a
>> "-"sign in my integration term?
>> Thanks for any of your suggestion.
>>
>> Yan
>>
>>
>>
>>
>>
>>
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>
>
> --
> ======================================================
> Dennis J. Shea tel: 303-497-1361 |
> P.O. Box 3000 fax: 303-497-1333 |
> Climate Analysis Section |
> Climate & Global Dynamics Div. |
> National Center for Atmospheric Research |
> Boulder, CO 80307 |
> USA email: shea 'at' ucar.edu |
> ======================================================
>

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Received on Mon Nov 8 17:28:49 2010