Implement unity normalization in CMEPS for coupled fields

[DeniseWorthen]

PR Checklist

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Description

Switches the mapping normalization type for coupled fields to one. See item 1 in CMEPS Issue #38 for more information.

The implementation of unity normalization results in b4b differences in the first coupling timestep of the coupled model. These differences are on the same order as a butterfly effect. See testing results here for more information.

Issue(s) addressed

CMEPS Issue, Item 1: #38
CMEPS Issue: #40

Testing

How were these changes tested? What compilers / HPCs was it tested with? Are the changes covered by regression tests? (If not, why? Do new tests need to be added?) Have regression tests and unit tests (utests) been run? On which platforms and with which compilers? (Note that unit tests can only be run on tier-1 platforms)

Initial testing:

hera.gnu: no change to current baselines
hera.intel: a test baseline was created for the coupled and datm tests; all coupled and datm tests verified against this test baseline.

• hera.intel
• hera.gnu
• orion.intel
• cheyenne.intel
• cheyenne.gnu
• gaea.intel
• jet.intel
• wcoss_cray
• wcoss_dell_p3

Dependencies

Waiting on CMEPS PR #41