Re: [ferret_users] How to calculate 0.016Z in ferret

[Olivier Marti <olivier.marti@xxxxxxxxxxxx>]

Le 18 nov. 2015 à 14:03, 夏长水 <xiacs@xxxxxxxxxx> a écrit :

Dear Ferreters,

I have a model result data in netcdf format containing the temperature and salinity in Z coordinate. I want calculate sound speed from 0-1000m using the temperature (t) and salinity (S) using following formula:

 c(Z)=1492+4.6t+.....+(1.34-0.01t)*(S-35)+0.016Z

Z is the water depth from 0-1000m.

My question how to calculate 0.016Z in ferret ?

Thank you in advance.

Changshui

LET my_depth = Z[G=my_temperature_variable]

LET C = 1492+4.6t+.....+(1.34-0.01t)*(S-35)+0.016*my_depth

Anyway, if you use t as a variable name, your going ahead problems, as t is the time axis in Ferret.

Olivier

-- 

Dr. Olivier Marti  - mailto:olivier.marti@xxxxxxxxxxxx

Laboratoire des Sciences du Climat et de l'Environnement

Institut Pierre Simon Laplace

Laboratoire CEA-CNRS-UVSQ  -  UMR 8212

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