dayavrg - sinotec2/CAMx_utility GitHub Wiki

###Objective
This program is used to calculate the maximum value of one hour and 8 hours ozone concentrations, and the maximum daily average PM2.5 or PM10's. The results are in 2-d grid-based formulation, and written in ASCII SURFER GRD files. The process is prepared for drawing concentration contour diagrams.

Arguments and Usage

There are alternative two ways: the former only applied to a file name, all model simulations will be used during the data analysis. While it is possible in front of the initialization process, data can not be used for analysis, and therefore must be discarded. In this case, a second and third sets of arguments, after the file name, delivery beginning and ending dates to the program in the form of yymmdd(the year, month, and day). Analysis of "day" means from 0:00 to 23:00.

    either:
    dayavrg ROOT.S.grd02
    or:
    dayavrg ROOT.S.grd02 Start_yymmdd End_mmdd
###Results
There are two groups of files for ozone and PM files, file names are

    o3h_ROOT.grd hour ozone maximum concentration of two-dimensional data file, ASCII format.
    o38h_ROOT.grd ozone 8 hours maximum concentration of two-dimensional data file, ASCII format.
    pm25_ROOT.grd PM2.5 daily maximum concentration of two-dimensional data file, ASCII format.
    pm10_ROOT.grd daily maximum concentration of suspended particles in the two-dimensional data file, ASCII format.
###Example

    dayavrg1.3b 1009_2linp6f.S.grd02 100901 0930
###Coordinates version
To meet the base map coordinate system, provided here two dayavrg version

    dayavrg1.3.par.f UTM version
    dayavrg1.3.parG.f geotic (LL) versions
The latter can be applied in [MeteoInfo] (http://www.meteothinker.com/) software systems.
###Note

  1. In accordance with regulations, the maximum daily or hourly values must take top 1% rank, to avoid taking an unreasonable extremes. However, in this version, there was no such a consideration.
  2. Sometimes the simulation results in boundary are unreasonable values, such as 0 or a particular low values. SURFER will get stick contours around the map. ASCII .grd file shall set to a maximum value to be cut off. This version also no such considerations.