Presentations from the Air Sensors Quality Assurance Workshop (July 25th-27th, 2023)

1.1 Opening Panel

 Session 1.1 Recording

1. Quality Assurance for Ambient Air Monitoring Applications* 
   • A presentation by Greg Noah from the US EPA Office of Air Quality Planning and Standards Ambient Air Monitoring Group
2. Data Quality Needs for a Smoke Sensor Network (pdf) (4.13 MB)
   • A presentation by David Frisbey from Monterey Bay Air Resources District Planning
3. How do we ensure adequate data quality for our needs? (pdf) (672.15 KB)
   • A presentation by Amanda Teora from New York State Department of Environmental Conservation
4. Three Projects and Six QA Tips (pdf) (2.21 MB)
   • A presentation by Tim Dye from TD Environmental Services LLC

1.2 Overview of QA for PM sensors

1. How to use low cost sensors to most accurately measure PM2.5*
   • A presentation by Mike Bergin from Duke University Civil and Environmental Engineering
2. Low cost sensors for air quality measurement*
   • A presentation by Dan Westervelt from Columbia University Lamont-Doherty Earth Observatory
3. Understanding low-cost PM sensors: A “teardown” meets aerosol science*
   • A presentation by Jessica Tryner from Colorado State University Mechanical Engineering
4. Dust, Low-Cost Sensors, and a Few Lessons Learned (pdf) (2.7 MB)
   • A presentation by Kerry Kelly from the University of Utah

1.3 QA for PM specific applications

Session 1.3 Recording

1. Low-Cost PM Sensors: Cautionary Tales*
   • ​​​​​​​​​​​​​​A presentation by Priyanka deSouza from the University of Colorado Denver
2. Equipment Loan Program QA Support of a Milwaukee Particulate Monitoring Project*
   • ​​​​​​​A presentation by Curtis Hedman from Wisconsin Department of Health Services
3. LCS Applications: A Case for More Focused Quality Assurance (pdf) (1.29 MB)
   • ​​​​​​​A presentation by Richard Peltier from the University of Massachusetts
4. Quality Planning and Modeling for Mobile Monitoring with Particulate Matter Sensors*
   • ​​​​​​​A presentation by Wilton Mui from AQ-SPEC
5. Data Wrangling 4000 Sensors from Raw Data to Results (pdf) (690.37 KB)
   • ​​​​​​​A presentation by Helena Pliszka from TD Environmental Services LLC

​​​​​​​1.4 Statistics and Data Science for air sensor quality assurance

Session 1.4 Recording

1. Making a difference; two examples of how sensors make a difference in public health*
   • A presentation by Ana Rappold from the US EPA Office of Research and Development Center for Public Health and Environmental Assessment
2. Evaluating Sensor Health (pdf) (1.15 MB)
   • ​​​​​​​A presentation by Jonathan Callahan from the Desert Research Institute

2.1 Overview of QA for fenceline & near source community applications for air toxics and VOCs

Session 2.1 Recording

1. Quality Assurance for sensor based fenceline and near source monitoring (pdf) (1.19 MB)
   • ​​​​​​​A presentation by Rod Robinson from National Physical Laboratory​​​​​​​
2. Total Volatile Organic Compounds (tVOC) Sensor Use in Colorado Oil & Gas Regulation 7*
   • ​​​​​​​A presentation by Michael Ogletree from the Colorado Department of Public Health & Environment
3. Real-Time VOC Monitoring Advancements and Lesson’s Learned*
   • ​​​​​​​A presentation by Julia Roth from Safer Greener Smarter (SGS)
4. Community Air Monitoring Program*
   • ​​​​​​​A presentation by Matt Van Vleck from Harris County Pollution Control Services

2.2 QA for specific air toxics and VOC applications

Session 2.2 Recording

1. City of Minneapolis – Network Quality Control: Our route to confidence and source apportionment for the Total Volatile Organic Compounds (TVOC) sensor data (pdf) (874.14 KB)
   • ​​​​​​​A presentation by Tom Townend from AQMesh​​​​​​​
2. Tackling the selectivity issues in low-cost VOC sensors (pdf) (1.37 MB)
   • ​​​​​​​​​​​​​​A presentation by Gabriel Isaacman-VanWertz from Virginia Tech Civil and Environmental Engineering
3. TVOC Sensor QAQC and the Impact on Colorado Oil & Gas Regulation 7 (pdf) (960.97 KB)
   • ​​​​​​​A presentation by Pamela Rickly from Colorado Air Pollution Control Division
4. Application-specific quality assurance of low-cost VOC sensing technology (pdf) (1.01 MB)
   • ​​​​​​​A presentation by Caroline Frischmon from the University of Colorado Boulder
5. Laboratory Evaluation of VOC Sensors*
   • ​​​​​​​A presentation by Wilton Mui from AQ-SPEC
6. SENTINEL (Sensor Intelligent Emissions Locator): A Quality Assurance Application for Sensors (pdf) (2.66 MB)
   • ​​​​​​​A presentation by Megan MacDonald from the US EPA Office of Research and Development Center for Environmental Measurement and Modeling

2.3 Data Fusion

Session 2.3 Recording

1. Air Sensors as Input to an Air Quality Data Fusion System (pdf) (1.6 MB)
   • ​​​​​​​​​​​​​​​​​​​​​A presentation by Carl Malings from Morgan State University & NASA Global Modeling and Assimilation Office
2. Data Fusion Applications in the Air Quality Modeling Group (pdf) (1.46 MB)
   • ​​​​​​​A presentation by Joey Huang, from the US EPA Office of Air and Radiation - Office of Air Quality Planning and Standards
3. Use of Air Quality Sensor Data in Data Fusion Applications for Current and Forecast Air Quality Mapping (pdf) (1.84 MB)
   • ​​​​​​​​​​​​​​A presentation by Nathan Pavlovic from Sonoma Technology
4. MOMA: a field calibration method for air sensor networks (pdf) (1.18 MB)
   • ​​​​​​​​​​​​​​A presentation by Geoff Henshaw from Aeroqual

2.4 Manufacturers and data aggregators QA

Session 2.4 Recording

1. How AethLabs ensures instrument quality and how users can maintain data quality (pdf) (835.46 KB)
   • ​​​​​​​​​​​​​​​​​​​​​A presentation by Drew Hill from AethLabs
2. Quality Assurance Procedures in IQAir’s AirVisual Platform (pdf) (1.21 MB)
   • ​​​​​​​A presentation by Christi Schroeder from IQAir
3. Agency Air Quality Data Management Systems And Real-Time Small Sensor Networks (pdf) (2.15 MB)
   • ​​​​​​​A presentation by Steve Drevik from Agilaire
4. Alphasense Sensors and QA Procedures*
   • ​​​​​​​A presentation by Todd Hardwick from Alphasense
5. SENSIT – Innovative Detection Solutions (pdf) (316.85 KB)
   • ​​​​​​​​​​​​​​A presentation by Jason Gu from SENSIT

3.1 Overview of QA for gas sensors

Session 3.1 Recording

1. Optimizing Field Co-location of Low-cost Sensors (pdf) (1.1 MB)
   • ​​​​​​​​​​​​​​​​​​​​​A presentation by Misti Levy Zamora from the University of Connecticut UConn Health
2. Sensor network long term performance and degradation*
   • ​​​​​​​A presentation by Albert Presto from Carnegie Mellon University
3. An introduction to machine learning models for gas sensor calibration (pdf) (459.24 KB)
   • ​​​​​​​A presentation by Naomi Zimmerman from the University of British Columbia
4. Calibration Practice for the Application of Dynamic Baseline Tracking Gas Sensor in Air Science Management Projects*
   • ​​​​​​​A presentation by Zhi Ning from the Hong Kong University of Science and Technology Division of Environment and Sustainability

3.2 QA for specific gas sensor applications

Session 3.2 Part 1 Recording

1. Considerations when deploying an air quality network (pdf) (963 KB)
   • ​​​​​​​A presentation by Edurne Ibarrola from Kunak Technologies​​​​​​​
2. Understanding Gas Sensors Using Electrochemical Gas Sensors in Air Quality*
   • ​​​​​​​A presentation by John Saffell from NosmoTech
3. Calibrations and evaluation of a Gas Sensor Network*
   • ​​​​​​​A presentation by Ronald Cohen from the University of California, Berkley
4. NO₂ Sensor Performance Features in Different Urban Settings in the UK*
   • ​​​​​​​A presentation by Sebastian Diez from the University of York

3.2 High concentration environments

Session 3.2 Part 2 Recording​​​​​​​

1. Quality Assurance for a Wildfire Smoke Sensor Loan Program (pdf) (1.51 MB)
   • ​​​​​​​A presentation by Amara Holder from the US EPA Office of Research and Development Center for Environmental Measurement and Modeling​​​​​​​
2. Use of Air Sensors for Short Duration and High Concentration Emissions (pdf) (2.18 MB)
   • ​​​​​​​​​​​​​​A presentation by Johanna Aurell from the US EPA Office of Research and Development Center for Environmental Measurement and Modeling

3.3 QA for specific gas and PM sensor applications continued

Session 3.3 Recording

1. Quality Assurance of Gas Sensor Data for Indoor Air Quality Measurements*
   • ​​​​​​​A presentation by Todd Crawford from New York State Department of Health​​​​​​​
2. It Takes a Village: Making Community Gathered Air Quality Data Actually Count (pdf) (2.51 MB)
   • ​​​​​​​​​​​​​​A presentation by Jan-Michael Archer from the University of Maryland School of Public Health
3. Quality Assurance for Gas & PM Sensors Networks (pdf) (1.35 MB)
   • ​​​​​​​​​​​​​​A presentation by Brandon Feenstra from South Coast AQMD
4. QA for specific gas and PM sensor applications: device siting (pdf) (1.78 MB)
   • ​​​​​​​A presentation by Jay Turner from Washington University in St. Louis
5. Sensing-as-a-service: Ensuring Accurate Data from Clarity Nodes*
   • ​​​​​​​A presentation by David Lu from Clarity

3.4 Closing Panel: Where do we go from here

Session 3.4 Recording

Conversation with Luis Lim from New Jersey Department of Environmental Protection, Eben Cross from QuantAQ, Rima Habre from the University of Southern California, and Gwen Smith from Community Health Aligning Revitalization Resilience & Sustainability (CHARRS).