Advanced three-dimensional mesoscale models (e.g., MM5 and WRF) and photochemical grid models (e.g., CAMx, CMAQ, REMSAD) are used in regional air quality studies. These models are designed for regional ozone and PM-2.5 studies. They are very computer-intensive, requiring expensive UNIX workstations. But now, AMI has made them operational on inexpensive PCs running under the Linux operating system (a Unix-like OS).

For the MM5 benchmark test from NCAR, a Pentium-III PC with a single 450 Mhz CPU (costing less than $1K) is shown in the following table to run 25% faster than the Cray YMP supercomputer that costs millions!
 

Below are some timing results for the CAMx 4.0 model using more recent microprocessors such as Athlon and Pentium 4:

AMI can provide fast, inexpensive and easy-to-use turnkey modeling systems that include both hardware and modeling software. AMI has developed PC-based parallel computers that can have more than one CPU (symmetric multiprocessing SMP) or are based on clusters of several networked PCs. Compared to expensive Unix workstations, these user-friendly PC systems provide very capable and much more cost-effective platforms for regional meteorological and air quality modeling. AMI can also provides on-site training on the use of both system hardware and modeling software.

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Last modified: 02/07/05