Fuel moisture model pull request final changes 2020

Final changes:

Update the PR commit message

there should be 15 files modified

km_opt=5 fix is in the develop branch, merge

/glade/u/home/jmandel/merge/WRF-Fire-merge-base-dm tag fuel-moisture-model-base-dec10-2019 at f9559af4b8a835f71 vs. /glade/u/home/jmandel/merge/WRF-Fire-merge-with-develop-dm at 46b548370c9eff7c9

• /glade/u/home/jmandel/merge/WRF-Fire-merge-with-develop-dm/test/em_fire/rain vs

/glade/u/home/jmandel/merge/WRF-Fire-merge-with-develop-dm/test/em_fire/rain: no change

• registry package using fmoist_run variable

• perhaps remove fmoist_freq and just leave fmoist_dt

• In module_fr_fire_driver.F, there is a comment about “time – assume dt does not change”. Is that true or does the FFM work also with time varying dt?

• does the FFM work with restart?

• The call to fire_driver_em() has now fire_ifun_end = 2, where it used to be 3. According to the code comments in module_fr_fire_driver.F, fire_ifun_end = 3 has to do with initialization of time step. Is that skipped now or embedded within fire_ifun_end = 2?

• How are the fuel classes initialized for a real case? It seems that the FM values are prescribed from the solution of the fuel moisture model? Could you document/explain that?