ARCHIVE OF PROTOCOL FOR COMPARING AIR DISPERSION MODELS

5. Data Files for Protocol - Terrain Data Files.

For the calculations with terrain, ADMS requires separate input data files of terrain heights. These files are listed in Table 9 and included in the dataset.

For AERMOD and ISC the necessary terrain data are included within the individual input datafiles listed in Tables 1,2,5 and 6. However, for plotting purposes or for use in other models, the ‘.grd’ files corresponding to the ADMS ‘.ter’ files are included in the dataset and are detailed in Table 10.

A zip file containing all the terrain data is provided for downloading:

Downloads:

Terrain files (215kB):

Terraindata.zip

Table 9. ADMS Terrain Datafiles.

Scenario

Terrain Datafiles

Annual Calculations

Hourly Calculations

Case 1

AT1A1.ter

AT1.ter

Case 2

AT2A1.ter

AT2.ter

Case 2 – extended grid

*

AT2X.ter

Case 3

AT3A1.ter

AT3.ter

Case 4

AT4A1.ter

AT4.ter

Case 5

AT5A1.ter

AT5.ter

Case 5 – extended grid

*

AT5X.ter

Case 6

AT6A1.ter

AT6.ter

Gaussian hill

*

AG1.ter

* No extended grid or Gaussian hill test cases for annual calculations

Table 10. AERMOD/ISC Terrain Datafiles.

Scenario

Terrain Datafiles

Annual Calculations

Hourly Calculations

Case 1

T1A1.grd

T1.grd

Case 2

T2A1.grd

T2.grd

Case 2 – extended grid

*

T2B.grd

Case 3

T3A1.grd

T3.grd

Case 4

T4A1.grd

T4.grd

Case 5

T5A1.grd

T5.grd

Case 5 – extended grid

*

T5X.grd

Case 6

T6A1.grd

T6.grd

Gaussian hill

*

G1.grd

* No extended grid or Gaussian hill test cases for annual calculations