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You are here: Home / Air Quality / Air Modeling / Rider 8 State and Local Air Quality Planning Program / Texas State and Local Air Quality Planning Program - Modeling Data / Texas State and Local Air Quality Planning Program - Modeling Domains

Texas State and Local Air Quality Planning Program - Modeling Domains

Map and parameters of Texas ozone air quality modeling domains.

Domain Map

Modeling domain maps are also available in PDF.

Domain Display / Zoom in:
CAMx: rpo_36km tx_12km tx_4km
  netx_4km ctx_4km ccv_4km elp_4km dfw_4km hgbpa_4km hg_1km
WRF: na_36km sus_12km tx_4km elp_4km

Map Projection Parameters

The Texas ozone modeling domains are defined on the Lambert Conformal Conic map projection (same as National RPO domains):

  First True Latitude (Alpha): 33°N
  Second True Latitude (Beta): 45°N
  Central Longitude (Gamma): 97°W
  Projection Origin: (97°W, 40°N)
  Spheroid: Perfect Sphere, Radius = 6370 km

Modeling Domain Paremeters

  • CAMx Domains
  • WRF Domains

Horizontal Grid Structure

Domain Range (km) Number of Cells Cell Size (km) Short Name
Easting Northing Easting Northing Easting Northing
RPO 36km Domain (-2736,2592) (-2088,1944) 148 112 36 36 rpo_36km
Texas 12km Domain (-984,804) (-1632,-312) 149 110 12 12 tx_12km
Texas 4km Domain (-328,436) (-1516,-644) 191 218 4 4 tx_4km
Suggested Subdomains for Local Areas
Northeast Texas Domain (68,328) (-904,-680) 65 56 4 4 netx_4km
Central Texas Domain (-292,40) (-1264,-860) 83 101 4 4 ctx_4km
Corpus Christi & Victoria Domain (-148,112) (-1444,-1184) 65 65 4 4 ccv_4km
El Paso Domain (-940,-824) (-940,-788) 29 38 4 4 elp_4km
DFW Domain (-148,184) (-904,-680) 83 56 4 4 dfw_4km
HGB-BPA Domain (32,400) (-1264,-1004) 92 65 4 4 hgbpa_4km
HG Domain (107,253) (-1189,-1079) 146 110 1 1 hg_1km

Vertical Layer Structure

Corresponding
WRF Layer
Layer Top
(m AGL)
CAMx
Layer
Layer Center
(m AGL)
Thickness
(m)
CAMx LayersCAMx Layers (Lower 21)
3815179.12813637.93082.5
3612096.62710631.62930.0
329166.6268063.82205.7
296960.9256398.41125.0
275835.9245367.0937.9
254898.0234502.2791.6
234106.4223739.9733.0
213373.5213199.9347.2
203026.3202858.3335.9
192690.4192528.3324.3
182366.1182234.7262.8
172103.3171975.2256.2
161847.2161722.2249.9
151597.3151475.3243.9
141353.4141281.6143.6
131209.8131139.0141.6
121068.212998.3139.7
11928.511859.5137.8
10790.610745.290.9
9699.79654.790.1
8609.78565.089.3
7520.37476.188.5
6431.86387.987.8
5344.05300.587.1
4256.94213.886.3
3170.63127.885.6
285.0259.451.0
133.9117.033.9
AGL - Above Ground Level.