[Dart-users] ensemble # and state time available for forward operators

[Nancy Collins]

hello dart-users,

i've just committed an update to subversion that allows
forward operator code in any obs_def_xxx_mod.f90 file
access to the ensemble number and the state time if
they want.

the change is fully backwards compatible; all existing
forward operators will continue to work as before.
but if you want to write a forward operator that uses
the difference between the state vector time and the
observation time, you can.  you can also use the
ensemble number to look up auxiliary data on a
per-ensemble member basis if you need to.

the interface to the model_interpolate() routine
inside the model_mod.f90 files has *not* changed.
this is a change only in the obs_def_mod code
where 'get_expected_obs()' is called for the various
observation types.

see the obs_def/obs_def_mod.html doc file
for more details, and as always, feel free to
email me with questions.

nancy