Run dispersion models faster in the cloud

No installation required. Parallelize your AERMOD runs on powerful cloud servers to achieve unheard of runtimes.

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Supports AERMOD • AERSCREEN • AERMET • AERSURFACE

Max Concentration
24.50 µg/m³
12% vs baseline
Peak Location
(150, 75)
app.dispersions.io/projects/industrial-2024
AERMOD Industrial Facility Assessment 2024
Overview Details Results
Run Complete Annual · 8,760 hrs
Source
-500-2500250500
5002500-250
Concentration (µg/m³)
0
24.5
Max Conc.
24.50 µg/m³
Max Location
(150, 75)
Total Receptors
1,024
Modeling Period
Annual 2024
Run Outputs Ready AERMOD.inp, meteorological data, output files
Download All
Integrated Workflow

The full AERMOD suite

Each program from the EPA's AERMOD suite is available for use, without extra charge. Tap each component to view details

AERSURFACE
Land Use Analysis
Calculates surface roughness, albedo, and Bowen ratio from NLCD land cover data
Outputs to AERMET →
Free
AERSCREEN
Screening Model
Quick worst-case analysis with automatic meteorology for preliminary assessments. Automatically pulls all land cover and elevation data from the correct sources. Free to use.
AERMET
Met Processor
Processes surface, upper air, and 1-minute ASOS data into AERMOD-ready files
Outputs to AERMOD →
AERMOD
Dispersion Engine
EPA's regulatory model for dispersion modeling. We execute your runs with parallel processing on powerful servers with 120+ cores to outperform AERMOD MPI by a large margin.
60 cores 12x faster
Results
Aermod Alchemy
Generate any AERMOD output file on-the-fly after the run is complete. No need for reruns.
120+
CPU Cores
12x
Faster
Start modeling now No credit card required
AERMOD Lightning

Unheard of run times.
Common-sense pricing.

Leave behind legacy software where you pay thousands regardless of your usage. Dispersions provides common-sense pricing, where you only pay for what you use.

Legacy Standalone
Traditional software
  • Limited to your hardware specs
  • Buy more licenses for concurrency
  • Expensive yearly updates
  • Local install required
  • License seat for each team member
  • Additional purchase for AERSCREEN
$3,000+
per license + yearly fee
VS
Dispersions
Cloud-based software as a service
  • Powerful servers with 120+ cores
  • Unlimited concurrent runs
  • Always up-to-date
  • Run from any browser
  • One license for your entire team
  • Free-to-use AERSCREEN GUI
$0 upfront
pay only for what you use
Easy Setup

Get started in minutes

Dispersions is designed to fit in with your existing AERMOD workflow.

1

Build with GUI

Create a run from scratch using our intuitive graphical interface. No files needed.

Beginner Friendly
2

Upload .inp Files

Upload your AERMOD.inp and other input files directly. We'll handle the rest.

Quick Start
3

Import .isc Project

Import existing .isc projects from Lakes software seamlessly.

Migration Ready
The Dispersions Advantage

Why teams choose us

12x Faster Processing

Parallelize on over 120 Intel Xeon cores. What used to take hours now completes in minutes.

Traditional
4+ hours
Dispersions
~20 min

Start in Seconds

Upload input files directly, import .isc from Lakes, or build from scratch with our intuitive GUI.

Drop .inp file

AERMOD Alchemy

Generate any output file on-the-fly. Postfiles, Daytables, Maxifiles—no reruns needed.

Run Complete
POSTFILE DAYTABLE MAXIFILE PLOTFILE SEASONHR
Identical to AERMOD output: +/- 0.00001 accuracy
Example: Run completed with ALL and STACKS source groups. Need SEASONHR for STACKS? Just select from dropdown and download—no rerun needed.

Infinite Concurrency

Run unlimited parallel jobs. No extra licenses needed.

Job 1
Job 2
Job 3
Job 4

Pay as You Go

No licenses. No surprises. Pay only for what you use.

$0 upfront
Receptors Days Terrain

Built for Teams

Collaborate anywhere. Share projects, track progress.

+5
Productive Ecosystem

Everything you need to succeed

Powerful tools and a supportive ecosystem make Dispersions the most productive platform for dispersion modelers.

Full AERMOD Suite

Access AERMOD, AERSCREEN, AERMET, and AERSURFACE all in one platform. No need to purchase each tool separately.

Learn more

Cost Estimator

Know your costs upfront. Transparent, usage-based pricing with no hidden fees or license surprises.

Try the estimator

100% Cloud-Based

Run models from anywhere with just a browser. No software to install, no hardware limitations.

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Expert Support

Get help when you need it. Our dispersion modeling experts are here Monday through Friday.

Contact us
Work From Anywhere

Built for modern teams

Dispersions is designed for how teams work today; distributed, async, and always connected.

Run from anywhere

Access your AERMOD runs from office, home, or on the go. No VPN or local install needed.

No hardware limitations

There is no need to buy specialized laptops for your team to run AERMOD. Our cloud handles the heavy lifting with powerful servers.

Async collaboration

Team members across time zones can run, review, and share results without waiting for someone else to deliver results via messaging or email.

No license headaches

Forget seat limits and annual renewals. Adding a new team member is extremely simple and incurs no additional costs.

NYC Team
London
Singapore
Tokyo
24/7
Availability
99.9%
Uptime
Global
Access
Start modeling in minutes

Ready to transform your
AERMOD workflow?

Join environmental consultants, researchers, and organizations already using Dispersions to run faster, more efficient dispersion models.

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No credit card required
No commitments
Pay only for what you use