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Please send AERMOD-ready data requests to worldgeodata@trinityconsultants.com and include the following information:

  • Format (AERMOD- or ISC-ready)
  • Executable version of the model
  • Facility or site location (latitude/longitude coordinates, UTM/zone coordinates, or a nearby city)
  • Number of years you would like to model (2007-2012)


Once we receive this information, we can assess your site's data quality and provide a quote.

Please send CALPUFF-ready data requests to worldgeodata@trinityconsultants.com and include the following information:

  • Model domain location and size (required to find how many observational stations are available)
  • Met Data Grid resolution
  • Use of WRF or MM5 data


Once we receive this information, we can assess your site's data quality and provide a quote.

The resolution of WRF and MM5 (12 km, 4 km, or 1 km) accounts for the meteorological changes associated with variations in terrain so the resolution size that will be most appropriate will depend on the terrain around a specific modeling site. If the terrain is very complicated around your modeling site, you may want to consider a higher resolution to effectively capture the complex terrain. If the terrain fairly flat though, a lower resolution may be more appropriate.

When the data is ready, the BREEZE Data Team will deliver the data via email. If the data files are extremely large (which is the case for some of the CALMET-ready and CALPUFF-ready data orders), we will deliver the data by shipping a flash drive or hard drive containing the data to your preferred address.

For more information on the differences between WRF and MM5 data, please click here.

The turnaround time depends on the order. For example, it will take the Data Team approximately 2-3 business days to process a 5-year AERMOD-ready meteorological data order for a given location. For a CALPUFF-ready met data order, which will require the use of MM5 or WRF, the processing time for one year of data will be approximately 1-2 weeks. To obtain an estimated timeline for your specific order, please contact the BREEZE Data Team at +1 972-661-8881 or worldgeodata@trinityconsultants.com.

The turnaround time depends on the order, however, the BREEZE Data Team typically processes a standard terrain data order within 1-2 business days. To obtain an estimated timeline for your specific order, please contact the BREEZE Data Team at +1 972-661-8881 or worldgeodata@trinityconsultants.com.

For locations within the U.S., the BREEZE Data Team can provide National Elevation Dataset (NED) terrain data or DEM data. For NED data within the U.S., the BREEZE Data Team can customize the area size up to 50 km x 50 km and the resolution of the data will be 10 meter or 30 meter. (If you need the NED terrain data to cover a size larger than 50 km x 50 km, please contact the BREEZE Data Team at +1 (972) 661-8881 or worldgeodata@trinityconsultants.com.) For DEM data within the U.S., the terrain data size for each tile is 7.5 minutes of latitude by 7.5 minutes of longitude (approximately 10 miles x 10 miles) with a 30 meter resolution.

Outside the U.S., the BREEZE Data Team can provide DEM data with a 90 meter resolution and each tile of will cover 1 degree of latitude by 1 degree of longitude (approximately 100 km x 100 km in most locations). Custom sized DEM tiles with 90 meter resolution are also available. Learn more on our Terrain Data webpage.

The BREEZE Data Team can provide meteorological data in a variety of formats for practically any location in the world including, but not limited to, the following formats: raw surface data (CD-144) and upper air data (FSL); ADMS-ready; AERMET-ready (Stage 2); AERMOD-ready (Stage 3); EDMS; ISC- and CAL3QHCR-ready; CALMET-ready; CALPUFF-ready; custom data processed using the Weather Research and Forecasting Model (WRF) or the Fifth Generation Mesoscale Model (MM5). Learn more on our Meteorological Data webpage.

The BREEZE Data Team can process National Elevation Dataset (NED) terrain data for locations within the U.S., as well as Digital Elevation Model (DEM) terrain data for locations within the U.S. and around the globe. Learn more on our Terrain Data webpage.

Historically, meteorological data for near-field air dispersion modeling (such as with AERMOD) has come primarily from the closest airport station to the facility being modeled, or from purpose-built “onsite” stations located at or near the facility.  In areas where nearby observational data is not available or where meteorological conditions change rapidly with distance, these typical data sources become less representative of the actual facility location, introducing substantial error, so using data from meteorological models like WRF and MM5 would be a good option. WRF and MM5 will simulate the meteorological conditions for your exact project site by taking historical observations from the surrounding region, combining them with boundary conditions obtained from archived global weather forecast models, and then integrating forward in time to produce hourly estimates of historical weather conditions at your project site.

If you are in need of CALMET-ready or CALPUFF-ready data, the data processing requires prognostic meteorological models (WRF/MM5) to be used to process the model-ready data.

For more information, read the article we published about the use of onsite meteorological data for AERMOD. If you have specific questions about the use of onsite met data related to your particular project, we encourage you to contact the BREEZE Data Team at +1 972-661-8881 or worldgeodata@trinityconsultants.com.

The BREEZE Data team is staffed by professional meteorologists and environmental engineers who provide meteorological expertise in obtaining data for your modeling needs. Our team is knowledgeable about sources for data worldwide, potential problems with external data sets and the appropriate ways to address them, and the proper preprocessing techniques for model input. Don’t compromise your modeling with delayed data availability or improper data handling. Let the BREEZE meteorologists and engineers process data for you quickly and properly.

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