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Re: [ferret_users] conversion of decibars to metre depth in sea water

Hi Saurabh,

You'll need the density information in order to integrate 1/(g*rho) from the surface downwards and then use ZAXREPLACE to map to the z axis.
If you have the salinity information then use the function RHO_UN.


On 03/03/17 11:49, saurabh rathore wrote:
HI Ferreters

I was wondering that do ferret/pyferret is having any function to convert depth in decibars to depth in meters. As I am having ocean temperature data in decibars along Z axis i just want to convert this pressure axis to metre axis i.e. Z axis of decibars to Z axis of meters.

yes? sh da
     currently SET data sets:
    1> ./temp_rg.nc  (default)
 name     title                                                  I         J             K         L          M         N
 TEMP     TEMP_RG[L=100]                   1:360     1:130     1:58      1:152     ...       ...
yes? sh gr temp
 name       axis                           # pts                     start                      end                       subset
 LONGITUDE LONGITUDE      360mr                  20.5E                  19.5E(379.5)             full
 LATITUDE  LATITUDE            130 r                  64.5S                     64.5N                       full
 PRESSURE  DEPTH (dbar)    58 i-                      2.5                      1975                         full
 TIME      TIME                          152 i   16-JAN-2004 05:14       16-AUG-2016 04:28        full
 normal    E
 normal    F

​regards, saurabh​



Saurabh Rathore
Research Scholar (PhD.)
Centre For Oceans, Rivers, Atmosphere & Land Science Technology
Indian Institute Of Technology, Kharagpur
contact :- 91- 8345984434

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