Masking the state

[hkershaw-brown]

Collection of masking state issues and what else could you think of as a mask?

#391 Ed's offline compression for MITgcm sea slug case.
#277 (comment) (missing ensemble members, vs. missing across the ensemble)

state or no state (1 | 0 ) at an element vs. missing different across ensemble member (mask is where any member has no state)

#389 (this is model_mods which use their own structure to keep track of the state, so things that could break if you did general masking.

Mpas regional: Q. Is a blend a type of mask? Weighted blend == mask with a function (beyond 0 or 1) x=wx_post​+(1−w)x_prior​
#753 (comment)

CAM above_ramp_start. Q. Is this a type of mask?

DART/models/cam-common-code/cam_common_code_mod.f90

Line 1564 in 80502a8

function above_ramp_start(test_value, gc, obs_type, ramp_end, total_dist, extra_dist)