Expected Differences

Problem 1. The python utility script, print_pointnc2ascii.py, fails if the MET point observation file contains NaN.
Problem 2. The computed AOD 550, NaN, should not be saved which happens when AOD 440 is -999.00 or AOD 650.

• Do these changes introduce new tools, command line arguments, or configuration file options? [No]
  
  If yes, please describe:
  

• [x ] Do these changes modify the structure of existing or add new output data types (e.g. statistic line types or NetCDF variables)? [Yes or No]
  
  If yes, please describe:
  

Pull Request Testing

• Describe testing already performed for these changes:
  

Problem 1: the python script

python3 /d1/personal/hsoh/git/bugfixes/bugfix_2370_aeronetv3/MET/share/met/utility/print_pointnc2ascii.py /d1/personal/hsoh/data/MET-2383/aeronet_v3_concat_big_with_nan.nc

Problem 2: having NaN at ascii2nc output:

/d1/personal/hsoh/git/bugfixes/bugfix_2370_aeronetv3/MET/bin/ascii2nc /d1/personal/hsoh/data/MET-2383/20221209.lev15.txt 20221209.lev15.nc -format aeronetv3

ncdump 20221209.lev15.nc | grep NaN | wc -l
0

• Recommend testing for the reviewer(s) to perform, including the location of input datasets, and any additional instructions:
  

• Do these changes include sufficient documentation updates, ensuring that no errors or warnings exist in the build of the documentation? [No]

• [x ] Do these changes include sufficient testing updates? [No]

• Will this PR result in changes to the test suite? [No]
  
  If yes, describe the new output and/or changes to the existing output:
  

• Please complete this pull request review by [Fill in date].
  

Pull Request Checklist

See the METplus Workflow for details.

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