[ncl-talk] 91 model levels

[WIND]

Hi all, I am trying to analyze the ERA-20C temperature tendency due to physics data. My version is 6.2.1, now I have some doubts about the model levels. The website http://www.ecmwf.int/en/forecasts/documentation-and-support/60-model-levels gives the definations of  91 model levels. Should I use the vinth2p or other ways to transform from model data to pressure data? 
Look forward to your suggestions. Any help would be appreciated.

Sincerely,
Yan
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