All Projects | Sonoma Technology

Development and Operation of the U.S. EPA's AirNow System

Examining Air Pollution and Chronic Respiratory Problems in Children

Air Quality Forecasting and Outreach Support for Sacramento, California

Examining the Effects of Air Pollution on Asthmatic Children in Fresno, CA

Researchers Develop First Comprehensive PM Hot-Spot Analysis Protocol

Air Quality Forecasting and Outreach Support for Columbus, Ohio

Compliance Monitoring and Legal Support for Industrial Facilities

Air Quality Forecasting and Outreach Support for Youngstown, Ohio

Carbon Monoxide Monitoring in Lake Havasu City, Arizona

Michigan MIair Website Design, Development, and Support

Air Quality Analysis, Modeling, and Expert Testimony for TVA Coal-Fired Power Plant

AirNow-International

Truck Rerouting Study Shows Reduced Near-Road Diesel Particle Pollution in an Environmental Justice Community

Study Used Data From Around the World to Assess Near-Road Pollution Issues

BlueSky Smoke Modeling System: Decision Support Tools for Fire and Air Quality Managers

Enhancements to SpareTheAir.com Website, Air Alert Email System, and Mobile Air Quality App

Operations and Maintenance of Upper-Air Meteorological Monitoring Network

AQCast: Web-Based Air Quality Forecasting System

Receptor Modeling of Ambient Aerosol at an Elementary School in Las Vegas

EnviroFlash Development, Operations, and Maintenance

Evaluating Children’s Exposure to Freeway Air Pollution in Las Vegas

CT-EMFAC Modeling Tool: Estimating On-Road GHG, Air Toxics, and Criteria Pollutant Emissions

National Assessment of the Photochemical Assessment Monitoring Stations Network

Estimating Air Emissions from Wildfires in the United States

Development and Enhancement of the Clean Air Partners Air Quality Website

Integrating Satellite Data and Ground Reports to Identify Fire Locations

Examining Potential Future Air Quality Impacts from Wildfires with the AQUIPT Planning Tool

Studying Air Emissions from a Road Construction Project in Arizona

BlueSky Playground for Interactive Smoke Modeling on the Web

STI Study Shows How Smoke Modelers Can Improve Predictions

Low-Carb Land: A User-Friendly Web Tool to Evaluate Travel and CO2 Impacts

Low-Carb Land: A User-Friendly Web Tool to Evaluate Travel and CO₂ Impacts

Improving Meteorological and Air Quality Modeling in the Gulf of Mexico

Improving Emissions Estimates for Lawn and Garden Equipment

Examining the Effectiveness of SMAQMD's Check Before You Burn Program

Development of the Interagency Fuels Treatment Decision Support System

Litigation Support for a Louisiana Oil Spill Case

Smoke from U.S. Fires Impacts the Arctic and Contributes to Climate Change

Publication of the Black Carbon Report to Congress

New Toolset Enables Fire Managers to Confidently Use Fire Weather Forecasts

Pilot Study Results Help States Monitor Near-Road Pollutant Concentrations

Meteorological Modeling and Wildfire Analysis for Litigation Support

STI Creates User-Friendly Update to the Popular CALINE4 Disperson Model

Developing a Greenhouse Gas Emissions Inventory for the Lake Tahoe Region

Air Dispersion Modeling to Identify Air Quality Impacts of Construction Projects

Litigation Support and Air Dispersion Modeling for Emissions Violation at Pulp and Paper Mill

Development of an Air Quality Modeling Framework in Utah

Enhancement of U.S. EPA PMF Source Apportionment Model

Ozone Modeling to Support Wyoming Air Quality Planning

STI Evaluates Whether Near-Road Sites Violate EPA’s NO2 Standard

STI Evaluates Whether Near-Road Sites Violate EPA’s NO₂ Standard

Linking Traffic and Distance to Roads with Pollution and Health Effects

STI Scientist Reviews Traffic Pollution and Health Impacts

Baldwin Hills Air Quality Study Allows Fact-Based Decision-Making

Exceptional Events Analysis of Wind-Blown Dust Impacts on PM in Arizona

Air Sensor Guidebook: Expanding the Awareness of Low-Cost Air Quality Sensors

Smart Growth Development Guidance for U.S. EPA

Mobile App Helps Burn Managers Assess Air Quality Impacts

Mobile App Makes it Easy to Manage Vegetation and Plan Fuels Treatment

Numerical Air Quality Forecast Training in Ningbo, China

Peace Airshed Zone Association Ambient Air Quality Monitoring Network Evaluation

Using Low-Cost Sensors to Evaluate the Spatial Variability of Ozone

Sonoma Technology and EPA Help Schools Reduce Exposure to Traffic-Related Air Pollution

Study Helps Estimate Background PM Concentrations Near Major Roads

Using Mobile Monitoring to Evaluate PM_2.5 from Wood Smoke

Study Assesses Co-Benefits of EPA's Clean Power Plan Carbon Standards for Power Plants

FireScape Monterey Uses STI's Fire Modeling to Reduce Risk from Wildfires

AERMOD Modeling for Transportation Projects

Collecting Sodar Wind Measurements to Support Wind Energy Forecasting

Evaluation of Power Sector Impacts on Ozone Concentrations in Downwind States

Air Quality Measurements to Mitigate Black Carbon Concentrations in Near-Road Utah Schools

Report Coauthored by STI Aims to Help China Solve Air Quality Crisis

Near-Road Air Quality Assessments and Support Services for the Transportation Pooled Fund

Florida Air Monitoring Network Assessment and Optimization

Exceptional Events Analysis of Smoke Impacts on Ozone Levels in Kansas

Village Green Project: Engaging Communities in Air Pollution Awareness

Characterizing Boundary Layer Meteorological Conditions in Houston

STI Revised District Website and Trained Staff on Technical Writing

Data Validation Training Helps Air Quality Agencies Breathe Easier

Assessment and Recommendations for the Wyoming DEQ Statewide Monitoring Network

Great Lakes Region Meteorological Model Review and Improvement

New STI Tool Helps Shanghai Find and Track Pollution Sources

Development of the Marin County Community Wildfire Protection Plan

Innovative Web Service Streams Real-Time Weather, Air Quality, and Traffic-Related Air Pollution Data to BREATHE Participant Smartphones

Smoke Sense Study Mobile App Design and Development

STI Sensor Study Examined Low-Cost Sensor Performance Under Real-World Conditions

Comparing Air Toxics and Wood Smoke Pollution Levels Across Sacramento EJ and Non-EJ Communities

STI Estimates 1.7M Tons of PM_2.5 from 2014 U.S. Wild and Prescribed Fires

Monitoring Support for Oil Refineries to Meet Local Regulations

Development of Ozone Exceptional Event Guidance

Evaluating Low-Cost Particulate Matter Sensors to Inform Air Quality Monitoring

Development and Operation of an Upper-air Meteorological Network

Fenceline Monitoring Using State-of-the-Art Optical Remote Sensing, Traditional, and Low-Cost Instrumentation

Low-Cost Sensor Study to Evaluate NO2 Sensors

Low-Cost Sensor Study to Evaluate NO₂ Sensors

Visualization of Air Emissions and Surface Meteorology in Southwest Wyoming

Development of <i>Community in Action: A Comprehensive Guidebook on Air Quality Sensors</i>

Development of Community in Action: A Comprehensive Guidebook on Air Quality Sensors

Monitoring Support for Oil Refineries to Comply with Federal Regulations

Kansas Prescribed Burn Smoke Modeling System Helps Predict Air Quality Impacts

Litigation Support: Motor Vehicle Defeat Devices

Pollution Analysis, Modeling, and R Training for Delaware DNREC

Improving Wind Forecasts to Increase Wind Farm Electrical Output

Environmental Justice: Community Interests and Breakthroughs in AQ Management (Discussion Package)

Torrance Refinery Air Quality Monitoring Project

STI at the 2017 International Emissions Inventory Conference

STI at A&WMA’s Air Quality Measurement Methods and Technology Conference

Improving EPA's AirNow Air Quality Index Maps with NASA Satellite Data

Exceptional Event Analysis: Wildfire Smoke from the Pacific Northwest Impacted Ozone Concentrations in Louisiana

STI at the 2018 National Air Quality Conference

The AirNow Air Quality Data System Turns 20

STI at the Air Sensors International Conference 2018

STI at the Better Air Quality Conference in Malaysia

Zero Emission Vehicles: Forecasting Fleet Scenarios and their Emissions Implications

Near-Real-Time Satellite Estimates of Surface PM<sub>2.5</sub> Concentrations in Africa

Near-Real-Time Satellite Estimates of Surface PM_2.5 Concentrations in Africa

Article: Response to a Rapidly Transforming Transportation Field

STI Study Examines Using Low-Cost Sensor Network to Measure the Spatial and Temporal Variability of Air Pollution

Air Quality Sensor Training Workshop for U.S. EPA

AirNow Mobile App Development and Operation

Assessment of Particulate Toxic Metals at an Environmental Justice Community

Mobile Source Air Toxics in an Environmental Justice Denver Community Adjacent to a Freeway

Greenhouse Gas Handbook Update Helps Shape Climate-Smart California Planning

Influence of Roadway Emissions on Near-Road PM<sub>2.5</sub>: Monitoring Data Analysis and Implications

Influence of Roadway Emissions on Near-Road PM_2.5: Monitoring Data Analysis and Implications

Modeled and Measured Near-Road PM<sub>2.5</sub> Concentrations: Indianapolis and Providence Cases

Modeled and Measured Near-Road PM_2.5 Concentrations: Indianapolis and Providence Cases

Journal Article: Air Quality and Source Apportionment Modeling of Ozone Episodes in New Mexico

Journal Article: CFIRE Inventory - Wildland Fire Emissions Developed for the 2011 and 2014 U.S. NEI

2020 Update of the Marin County Community Wildfire Protection Plan

TR News Article: Near-Road Air Quality - Insights from U.S. DOT Transportation Pooled Fund Study

Recent Projects