Station sampler: add support to Global Historical Climatology Network Daily (GHCN-D)

[metdyn]

Description

Small improvement for station sampler to support

• 3_aeronet/NORTH_AMERICA.csv

name,lon,lat
Ames_AERO,-93.7747802734,42.0213623047
Appalachian_State_AERO,-81.6938018799,36.2145996094

• https://www.ncei.noaa.gov/pub/data/ghcn/daily/ghcnd-stations.txt

ACW00011604  17.1167  -61.7833   10.1    ST JOHNS COOLIDGE FLD                       
ACW00011647  17.1333  -61.7833   19.2    ST JOHNS                                    
AE000041196  25.3330   55.5170   34.0    SHARJAH INTER. AIRP            GSN     41196

Related Issue

Motivation and Context

How Has This Been Tested?

Tested on Mac

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Trivial change (affects only documentation or cleanup)

Checklist:

• I have tested this change with a run of GEOSgcm (if non-trivial)
• I have added one of the required labels (0 diff, 0 diff trivial, 0 diff structural, non 0-diff)
• I have updated the CHANGELOG.md accordingly following the style of Keep a Changelog