Gridded Relative Frequencies

[marqh]

A metadata encoding for the result of a Gridded Relative Frequencies process

• Processing steps:
  1. Begin with a collection of METAR reports and identify an interesting characteristic that is boolean (e.g., “ceiling height” less than or equal to 1000 feet or SN/SG/SNSH/SGSH occurs in present weather).
  2. Define appropriate points in time and/or spans of time.
  3. Define start and end dates for a “cool season” or “warm season” and collect booleans for a representative sample during that season.
  4. Compute the appropriate relative frequencies at each station.
  5. Analyze these frequencies to a grid.
  6. For a collection of stations (generally much larger than the collection used in step 1., above), interpolate the gridded values to yield a value at each station.

[marqh]

http://www.uncertml.org/statistics/discrete-probability
looks appropriate for vi