[ncl-talk] Question about the built-in function trop_wmo

[王娜]

Hi all, 




I am trying to calculate the tropopause pressure with the built-in function trop_wmo, but got some abnormal values (equal to 85 hPa or -999 hPa) when using the monthly temperature from NCEP/NCAR reanalysis 1 (17 levels between 1000 hPa and 10 hPa).  It seems like that this problem is related to the vertical resolution of the input temperature. If I use the ERA-interim reanalysis data (32 levels between 1000 hPa and 10 hPa), the abnormal values are non-existent.  Does the function trop_wmo not apply to the renanlysis data with coarse resolution? Any help on how to fix this problem? 

Attached are my ncl script and input data.




Thanks

Wang Na
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20170920/de66f0f8/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: tropopause_reanalysis.ncl
Type: application/octet-stream
Size: 1726 bytes
Desc: not available
URL: <http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20170920/de66f0f8/attachment.obj>