- When a time step of less than 1 min is required, a code section is invoked
to linearly interpolate the particle positions to the concentration grid
- Another option is to use puff rather than particle dispersion to reduce
artificial diffusion
![](../images/sage001.png)
![](../images/sage002.png)
13 10 18 19 |    start time |
43.59066 -112.9380 10.0 |    start location |
3 |    run duration |
sage5_wrf01.bin |    meteorology |
![](../images/sage003.png)
43.59 -112.94 |    grid center |
0.001 0.001 |    grid spacing |
0.2 0.2 |    span |
25 |    layer depth |
13 10 18 20 00 |    sample start |
13 10 18 22 00 |    sample stop |
00 00 10 |    three hour averages |
![](../images/sage004.png)
SF6E |    pollutant |
3708.0 |    release rate |
2.5 |    duration |
13 10 18 19 30 |    release start |
![](../images/sage005.png)
numpar = 50000 |    namelist particle release number |
maxpar = 100000 |    namelist particle release maximum |
![](../images/sage006.png)
ichem = 6 |    namelist divide mass by air density |
![](../images/sage008.png)
sage5_meas.txt |    measured data file |
1.986E+08 |    convert g/kg to ppt |
sage5.txt |    output text file name |
![](../images/sage010.png)
Concentration Display Options
![](../images/sage011.png)
5    1 |    rings distance |
1.986E+08 |    convert g/kg to ppt |
10000 ... 10 |    user set contours |
100 |    zoom factor |
sage5_meas.txt |    measured data |
![](../images/sage012.png)
ppt |    units label |
between |    convert g/kg to ppt |
   |    volume = blanks |
sage5_meas.txt |    measured data |
![](../images/sage013.png)
![](../images/sage016.png)
sage5_control.txt |    save control file |
sage5_setup.txt |    save setup file |
|