Remove ensemble post-processing from the Ensemble-Stat tool.

[JohnHalleyGotway]

Describe the Enhancement

MET#1904 added a new Gen-Ens-Prod ensemble post-processing tool to MET version 10.1.0, and MET#1907 warned users that ensemble product generation would be removed from Ensemble-Stat in a future version. This issue is to strip the processing of the "ens" dictionary, along with ensemble product generation options out of the Ensemble-Stat tool.

Need to more carefully define which, if any, of the "ensemble_flag" options should remain. For example, depending on the "output_flag" options requested, Ensemble-Stat will still need to compute the ensemble mean, standard deviation, and gridded ranks. Should it retain the ability to write those fields to an output NetCDF file?

Propose REMOVING minus, plus, min, max, range, frequency, nep, and nmep, leaving the following options which remain:

ensemble_flag = {
   latlon    = TRUE;
   mean      = TRUE;
   stdev     = TRUE;
   vld_count = TRUE;
   rank      = TRUE;
   weight    = TRUE;
}

Recommend that the tool check to see if the user provides and "ens" dictionary in the configuration file, and if so, error out with a useful error message. Also be sure to update the MET flowchart changing Ensemble-Stat from being green and blue, to only blue. It is a statistics generation tool (blue) but no longer does pre-processing (green).

Recommend coordinating these changes with @michelleharrold and the DTC UFS/SRW team.

Note that this work should be done in conjunction with #2139.

Time Estimate

2 days.

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2793541

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• METplus, MET, METdatadb, METviewer, METexpress, METcalcpy, METplotpy
• Define an issue to update the METplus Ensemble-Stat wrapper and remove the "ens" dictionary from the wrapped config file: Update the EnsembleStat wrapper and use case examples to remove ensemble post processing logic METplus#1816

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[JohnHalleyGotway]

Recommend renaming ensemble_flag to something else. Perhaps ens_rank_flag, ensemble_pairs_flag, or obs_rank_flag? This is similar in functionality to nc_pairs_flag in Grid-Stat.