vint fonction extrapolation

[Remi Meynadier]

Hi folks
I am using the vint fonction to integrate specific humidity to obtain
precipitable water.

This is what I ve done : vint(ps,q,100) with ps surface pressure.

What does the vint fonction do when the first pressure level (ie 1000hPa)
is above surface pressure ? An extrapolation from the first pressure level
?

and in the same time what if ps is lower than 1000hPa ?

Thanks in advance
Regards

Remi
--
Rémi Meynadier
Institut Pierre Simon Laplace
Service d'Aéronomie du CNRS, UMR 7620
Université Pierre et Marie Curie
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