Processing categories: Point

The purpose of the Mrgpt program is to combine inline-mode model-ready multiple point speciated hourly emission data files (not gridded) created by Smkmerge and ASCII elevated files created by Elevpoint. The program merges whatever data variables are in the input files. These files can each have different sets of data variables; Mrgpt will sum values only for each variable that is common to two or more files.

Mrgpt checks several features of the input files to ensure that the data in these files are appropriate to be merged together. All input files must have use the same time step. Mrgpt compares the units of the variables with the same name and it creates an error message when the units are not identical. It is not sufficient to have units that are the same in meaning but different in syntax. For example, although tons/hour and tons/hr represent the same units, Mrggrid will not recognize this because of the different syntax. The user must resolve unit discrepancies before running the program.