Presenter Biographies

Adrian ArfireAdrian Arfire

Metrology Engineer, Airparif

Adrian Arfire received his PhD in Robotics, Control, and Intelligent Systems from the Swiss Federal Institute of Technology in Lausanne (EPFL) in 2016, with a thesis on “Mobile Sensor Networks for Air Quality Monitoring in Urban Settings”. During his thesis, he was in charge of the technical development and the management of the Lausanne wireless sensor network deployment for the OpenSense project – which strived at a better understanding of urban air pollution and its effect on citizen health by leveraging novel sensing technologies. Since 2017, he has joined the Metrology Laboratory of Airparif, where he is using his knowledge in distributed intelligent sensing systems to contribute to Airparif’s digital strategy and the adoption of novel sensing technologies. In particular, since 2019 he has has been the project manager of the AIRLAB Microsensors Challenge.

Virtual Fall Series Session 2: Scaling-up Low-cost Sensor Evaluation and Network Integration: the Paris / Ile-de-France Experience

Felipe Aguirre

Executive Director, Comite Pro Uno

Since November of 1997, Felipe Aguirre has served as the Executive Director of Comite Pro Uno in Maywood, California. He founded and developed this community organization that created several community empowerment movements including tenants’ rights, Environmental Justice and citizenship. Prior to that Mr. Aguirre has worked extensively with multiple community based organizations, non-profits, and in government, including as Councilperson and Mayor of the City of Maywood from 2006 to 2013.

Virtual Summer Series Session 2: High-Density Deployment of PM2.5 Sensors in the Maywood Environmental Justice Community

Karima AlwishahKarima Alwishah

Student, University of Michigan-Dearborn

Karima Alwishah is the Program Coordinator for the Environmental Health Research-to-Action program in Dearborn, MI. She is also a student at the University of Michigan-Dearborn where she studies public health and has been recognized as a Difference Maker. Ms. Alwishah also served as a 2018-2019 Clean Air Council member of the Michigan Environmental Justice Coalition and is an advocate for environmental justice locally. 

Virtual Summer Series Session 2: Building Youth Capacity for Community Science and Policy Advocacy in Dearborn, MI

Carlos ArambulaCarlos Arambula

Laboratory Technician, Nevada State College

I am undergraduate student at Nevada State College. I am majoring in Environmental Resource Science with a minor in Chemistry and plan to graduate in the fall of 2020. I am currently a working at the Desert Research Institute as a student researcher.

Virtual Summer Series Session 3: Clean Air Tourism: Assessment of Individual Exposure to Indoor and Outdoor Air Pollution on the Las Vegas Strip Using Portable Sensors, Las Vegas, Nevada, USA.

Kristen BenedictKristen Benedict

OAQPS Sensors Team Lead, U.S. EPA

Kristen Benedict is in EPA’s Office of Air and serves as the team lead on collaborative efforts to promote the understanding, collection, and use of data generated by air sensors and other emerging measurement technologies. Her team is comprised of experts across disciplines including ambient and source measurement, health and environmental impacts, data collection and display, analysis, and outreach. Kristen received an undergraduate degree in Environmental Science from the University of Virginia and a Masters degree from North Carolina State University in Atmospheric Science.

Virtual Fall Series Session 4: A Brief Overview of EPA Communication & Interpretation Sensor Activities

Jen BrownJen Brown

Business Scientist, Met One Instruments, Inc. 

I work with the buisness development group at Met One Instruments, Inc. based out of Grants Pass, OR.  I have an MS in Chemistry from the University of Oregon and BS in Physics-Materials Science from Southern Oregon University.  One of my responsibilities with Met One Instruments is to manage the operations and analyze data collected from optical and regulatory air quality monitors from multiple field sites across the country.

Virtual Fall Series Session 1: Regulatory Comparison of Low Cost OPC Instrumentation for Ambient Particulate Mass Concentration Measurement

Aubrey BurgessAubrey Burgess

Love My Air Program Coordinator, Denver Department of Public Health & Environmental 

Aubrey Burgess is the Program Coordinator for the Love My Air program at Denver’s Department of Public Health and Environment. She works closely with schools to monitor local air quality and limit air pollution and exposure to pollution through behavior change, advocacy, and community engagement. Aubrey has a Bachelor’s in Sustainability and Environmental Studies from Florida International University and a Master’s in Environmental Assessment from North Carolina State University.

Virtual Fall Series Session 3: Engaging School Communities in Air Sensors

Graeme CarvlinGraeme Carvlin

Air Resource Specialist, Puget Sound Clean Air Agency

Graeme Carvlin is an Air Resource Specialist with the Puget Sound Clean Air Agency.  He has a PhD in Environmental Health from the University of Washington and an MS in Chemistry from UCSD.  Graeme works at the intersection of air sensors and community science.  Currently he is developing web tools to help the public make sense of their sensor data.

Virtual Summer Series Session 1: Web Tools for Sensor Data

Ben CrawfordBen Crawford

Assistant Professor, University of Colorado, Denver

Ben is a Professor in the Geography and Environmental Sciences Department at the University of Colorado Denver. Before coming to Colorado in 2019, Ben was a postdoc at MIT and the University of Reading (UK); worked for a wind energy start-up; and completed his PhD at the University of British Columbia. His background is in meteorology and current research interests are focused on air quality, urban climates, and developing sensor networks to observe complex surface-atmosphere interactions.

Virtual Summer Series Session 2: Use of a low-cost sensor network to estimate exposures and track pollutant chemistry during the 2018 Kīlauea eruption

Calvin Cupini

Citizen Science Program Manager, Clean Air Carolina

Calvin Cupini is the Citizen Science Program Manager at Clean Air Carolina, where he founded the AirKeepers network of engaged citizens and a statewide particle sensor network in nearly every single county of North America Carolina. By combining all levels of participation, he looks to elevate STEM tools, community research and focused government outcomes. Calvin's work includes partnership driven environmental justice work, collocation studies, surveys of fine particle pollution and low cost monitoring tools, GIS storytelling, and environmental health policy. He serves on the board of the Citizen Science Association, an advisor to SciStarter, the Museum of Virginia, EarthWatch, Scivr, and member of the World Economic Forum's Global Shapers. 

Virtual Summer Series: Moderator

Jennifer DeWinterJennifer DeWinter

Atmospheric Scientist, Sonoma Technology Incorporated

Jennifer is an atmospheric scientist with Sonoma Technology, Inc. (STI) and leads data systems initiatives often focused on high time resolution datasets from air sensors. Since joining STI in 2008, Jennifer has applied her technical expertise to conduct analyses on a diverse array of projects for federal, state, local, and international agencies. Her work encompasses community outreach and education with low cost sensors, near-road data analysis, and developing data systems for management, visualization, and distribution of air quality data.

Virtual Summer Series Session 2: High-Density Deployment of PM2.5 Sensors in the Maywood Environmental Justice Community

Rachelle DuvallRachelle Duvall

Environmental Engineer, U.S. EPA

Dr. Rachelle Duvall is an Environmental Engineer with the U.S. Environmental Protection Agency (EPA) Office of Research and Development, located in Research Triangle Park, North Carolina. Her research focuses on evaluating innovative technologies including air sensors to better understand air quality and source emissions. She combines these innovative approaches with citizen science/crowdsourcing to empower and engage the public while also informing her research. She is also very passionate about sharing science through educational outreach for students of all ages. Dr. Duvall has a Ph.D. and M.S. in Civil & Environmental Engineering from the University of Wisconsin – Madison, and a B.S. in Chemical Engineering from the University of Rochester (NY). Read more about Dr. Duvall here: 

Virtual Fall Series Session 4: Overview of the U.S. EPA Work on Developing Sensor Performance Testing Protocols and Targets for Ozone and PM2.5 Air Sensors

Adrian Dybwad

Founder, PurpleAir

PurpleAir was born in the fall of 2015 out of Adrian’s curiosity surrounding air quality in his Salt Lake Valley community. Today, PurpleAir’s global network has grown to thousands of sensors measuring real-time air quality made accessible to the public via their interactive map.

After discovering his passion for technology at a very young age, Adrian spent many years honing his skills in complex electronic repairs, surface mount assembly and prototyping. This expertise, combined with two decades of experience in computer programming, network engineering and software development, enabled him to create PurpleAir. 

Virtual Summer Series Session 1: Purple Air Discussion

Tim DyeTim Dye

Founder, TD Environmental

Tim Dye has over 25 years of experience in environmental field monitoring, data management, and public communication. A visionary and entrepreneur, he has created air quality and meteorological applications both domestically and internationally. He is a widely recognized leader in air sensors and Internet of Things (IoT) technologies for environmental applications. While at Sonoma Technology, Tim developed innovative systems for air quality data management systems and forecasting programs for public outreach (,, Tim has the proven ability to transform traditional programs by using a mixture of technology, creativity, and leadership.

Virtual Summer Series Session 1: TD Environmental Discussion

Angela EatonAngela Eaton

Director, Safecast

Angela Eaton leads Safecast’s air quality and radiation monitoring efforts in the U.S. and supports communities looking to engage in environmental monitoring throughout the Americas. Angela is currently working with the Los Angeles Public Library on their efforts to build citizen science communities at branches and seeks new ways to encourage environmental monitoring as a means to satisfy the curious and empower communities. To this she brings previous experience in sustainable systems design in urban water infrastructure and has consulted non-profits, utilities, and cities in conservation and greenhouse gas reduction. Angela has served as a SXSW Eco Advisory Board member and has participated as a Civil Society Working Group reviewer during the United Nations Habitat III process in which the current sustainable development goals were established. 

Virtual Summer Series Session 1Public Institutions and Trust: Developing Community Data Assets

Jessa EllenburgJessa Ellenburg

Director of Educational Outreach, 2B Technologies

Jessa Ellenburg earned a degree in Civil Engineering at the University of Colorado and spent six years in bridge design.  Thereafter she joined 2B Technologies in 2009 to follow her passion for educating youth about air pollution and climate change.  She has assisted in the creation of a number of educational projects using air pollution monitors in schools and communities, including the Global Ozone (GO3) Project and AQTreks.

Virtual Fall Series Session 3: The GO3 Project and AQTreks: A decade of air pollution monitoring with students and the public

Anna FarquharAnna Farquhar

Senior Scientist - Gas Sensing, Aeroqual Ltd.

Dr. Anna Farquhar is a senior scientist in the R&D team at Aeroqual Ltd, a New Zealand based company that specialises in sensor based real-time ambient air quality monitoring. Aeroqual designs and delivers integrated hardware and software platforms to reliably measure the air. As an electrochemist by training, Anna's research focuses on electrochemical gas sensors, and their use in ambient air measurements. In particular she is focussing on novel design inputs for electrochemical gas sensors to ensure reliable measurements in ambient air.

Virtual Fall Series Session 1: Application of Electrochemical Analysis Methods to Diagnose Atmospheric Impacts on Electrochemical Gas Sensor Response

Kathryn GeorgeKathryn George

Air Pollution Specialist, California Air Resources Board

Katie George is an Air Pollution Specialist in the Advanced Monitoring Techniques Section at the California Air Resources Board (CARB). Her work focuses on the implementation of community air monitoring programs and the use of non-traditional monitoring tools such as mobile platforms and air quality sensors. She obtained her BS in Environmental Science from Slippery Rock University and MS in Atmospheric Science from the University of California, Davis. 

Virtual Fall Series Session 3: Indoor Air Quality, Exposure & Health, Youth Education & Development Moderator

Adam GiandomenicoAdam Giandomenico

Co-Founder & President, Particles Plus

Founded Adams Instruments in July 2006, which was acquired by TSI, Inc. in January 2008. Hired by TSI’s group president as their Director of Business Development and assisted the company to take a leadership position within the contamination control and controlled environments markets by successfully launching a complete airborne particle counter offering and facility monitoring system. Identified and assisted TSI in the acquisition efforts of Systems Plus (Singapore), FMS Systems (United Kingdom), Particle Metrics (USA) and Quant Technologies (USA). Initiated the successful creation and launch of the company’s Singapore operations and worldwide distribution model within the contamination control marketplace.

Virtual Summer Series Session 3: Particles Plus Discussion

Jalisa GilmoreJalisa Gilmore

New York City Environmental Justice Alliance

Jalisa Gilmore is the Research Analyst at the New York City Environmental Justice Alliance (NYC-EJA). At NYC-EJA she leads their Community Air Mapping Project for Environmental Justice (CAMP-EJ), a grassroots air quality monitoring campaign. Her other work at NYC-EJA includes research and advocacy related to coastal resiliency, green infrastructure, and extreme heat to promote equitable environmental conditions in NYC communities. Jalisa has an MPH in Environmental Health Sciences from Columbia University’s Mailman School of Public Health with a certificate in Climate Change and Human Health.

Virtual Summer Series Session 2Empowering Community Based Organizations to Improve Air Quality in NYC Environmental Justice Communities

Geoff HenshawGeoff Henshaw

Founder, Chief Technology Officer, Aeroqual

Geoff Henshaw is the Founder and Chief Technology Officer at Aeroqual,  an NZ headquartered company that’s been at the forefront of sensor based real-time air quality monitoring for over 20 years. Aeroqual designs and delivers integrated hardware and software tools, built around industry-leading air quality sensors, that make it easy to measure the air.  Geoff is also technical lead for the ASTM D22.03 committee developing performance standards for outdoor air sensors.  

Virtual Summer Series Session 3: Reliable NO2 measurements from low-cost air quality sensors deployed in large networks

Edurne IbarrolaEdurne Ibarrola

Environmental Coordinator, Kunak Technologies

Dr. Edurne Ibarrola is Environmental Coordinator and I+D in Kunak Technologies. She is responsible for innovation and development tasks, RD projects coordination and funds raising and Regulation with legislation bodies and certifications. She is member of the WG42, which is developing the future technical specification "Air Quality-Performance evaluation of air quality sensors". 


Karoline Johnson BarkjohnKaroline Johnson Barkjohn


Karoline is an ORISE postdoc hosted by US EPA in Research Triangle Park, North Carolina. Her work focuses on the evaluation of air sensors across the United States. She received her PhD in environmental engineering from Duke University in 2018.

Virtual Fall Series Session 1: Long-Term Performance of Five Air Sensor Models Across Seven U.S. Sites

Ajith KaduwelaAjith Kaduwela

Professional Research Scientist, Air Quality Research Center, UC Davis

Ajith Kaduwela is a Professional Research Scientist at the Air Quality Research Center at the University of California at Daivs. He is an External Science Advisor for the Air Quality Club at Albany High School 

Additional Researchers:

  • Tara Lee, Senior, Albany High School
  • Minju O'Rouke, Senior, Albany High School
  • Sean Morris, AP Computer Science Teacher & Faculty Advisor for Air Quality Club, Albany High School

Virtual Fall Series Session 2: Youth Education: Measurement of Indoor Air Quality Impacts of Nearby Wildfires using Low-Cost Air Sensors

Yisi LiuYisi Liu

PhD Student, University of Washington

Yisi Liu is currently a PhD student in Department of Environmental and Occupational Health Sciences in University of Washington. She gained her Bachelor of Medicine in Wuhan University, China. Yisi has general interest in health effects of air pollution. Her recent research mainly focuses on traffic-related air pollution. Since traffic is one of the major sources of air pollution in urban areas, Yisi’s studies exploit mixture of methods to understand: air pollution concentrations in different microenvironment, personal air pollution intake during traveling, determinants of transportation modes choices, short-term cardiorespiratory health effects of traffic-related air pollution, and potential strategies to control traffic-related air pollution exposure for intra-city travelers.

Virtual Summer Series Session 2: Short-term health effects of traffic-related air pollution exposure in multi-modal commuting in Chengdu, China

Carl MailingsCarl Malings

NASA Postdoctoral Program Fellow, Goddard Space Flight Center

Since 2017, Carl Malings has worked as a postdoctoral researcher at the Center for Atmospheric Particle Studies at Carnegie Mellon University and for the "Make Our Planet Great Again" ANR/CNRS project at the Université Paris-Est Créteil in France. His research focused on deploying, calibrating, and managing networks of low-cost air quality sensors. He is now beginning his work as a NASA Postdoctoral Program Fellow, where he seeks to combine data from global models, satellite retrievals, and traditional and low-cost ground monitors to build a more comprehensive picture of air quality.

Virtual Summer Series Session 3: Data Management Lessons from the RAMP Sensor Network

Ken McGary

CTO & Co-Founder, Apis-US, Inc.

Electronics engineer with over 4 decades of experience developing systems for avionics, telecom, medical electronics, and environmental sensing.

Virtual Fall Series Session 2: New Ambient Sample Capture Apparatus Provides Speciation Methods using Next Generation Air Monitoring Networks

Ethan McMahonEthan McMahon

Senior Innovation Advisor, US EPA

Ethan McMahon is a Senior Innovation Advisor at the U.S. Environmental Protection Agency who helps people leverage the Internet of Things, citizen science and big data analytics. He launched EPA’s Smart City Air Challenge, a contest for communities to install hundreds of air quality sensors and make the data public. Two communities implemented projects and can shared their data management practices. Ethan also managed NASA’s International Space Apps Challenge in 2014, a global hackathon in 95 locations around the world that yielded over 660 projects. In addition, he managed EPA’s Apps for the Environment Challenge in 2011, which encouraged developers to create mobile apps using EPA’s open data. He is a member of the Group on Earth Observations’ Data Management Working Group and is the co-lead of EPA’s Citizen Science Data Management Strategy (in process).

Virtual Summer Series: Moderator

Abid OmarAbid Omar

Founder and Citizen Scientist, Pakistan Air Quality Initiative

Abid Omar has a social mission: how can I help improve the environment of Pakistan? He sees the air pollution emergency in Pakistan as a silver lining — an opportunity to drive environmental awareness and change that will clean up Pakistan for good.

A key indicator of environmental issues is pollution that affects our daily lives, specifically air pollution. He found but there is no data for this, so he founded the Pakistan Air Quality Initiative as a community-driven initiative to monitor air quality in across major urban areas of Pakistan and to provide awareness for air quality and air pollution issues, and therefore provide impetus for change.

His day job is in the technical textiles and filtration industries. 

Virtual Fall Series Session 3: Community-driven open-data on Pakistan’s air pollution problem

Charul PaliwalCharul Paliwal

PhD Scholar, IIIT Delhi

Charul is a Ph.D. scholar working with Dr. Pravesh Biyani in Mobility and Optimization Lab at IIIT-Delhi, India. Her research interests include Sustainable Mobility, Spatiotemporal signal processing, and Optimization. She is working on the Variational Bayesian inference for Spatio-temporal extrapolation.

Virtual Fall Series Session 1: Scalable Spatio-Temporal Measurements and analysis of Air pollution data using  Vehicle Mounted Sensors

Peter PedersenPeter Pedersen

University of Cambridge

Peter has two masters, one in Physics (2017) and another in Sensor Technologies (2018), and is currently undertaking a PhD in Astrophysics. Through his degrees he has gained expertise in remote sensing, embedded systems, and machine learning. In his second masters, he co-founded an initiative called open-seneca, which works towards creating a global, mobile, air pollution sensor network. He has had success implementing pilot studies with the Argentine government and the UN, where this initiative has won several awards, including the University of Cambridge’s Vice-Chancellor's Research Impact and Engagement Award in 2019.

Virtual Summer Series Session 1Open-seneca: development of a low cost air quality sensor network and its implementation to measure PM2.5 in the city of Buenos Aires, powered by citizen science

Lekan PopoolaOlalekan Popoola

Postdoctoral Research Associate, University of Cambridge

My main interest involve studying of a problem of huge significance in the form of air quality and its impact on human health. My work mainly focuses on development and deployment portable air quality sensors. In addition, I am responsible for developing detailed analysis technique for data captured as well as validating air quality models using field data.

Virtual Summer Series Session 3: Source characterisation and emission indices estimation using hyperlocal measurements from a low-cost sensor network - London Heathrow airport

Virtual Fall Series Session 1: A novel calibration method for hyperlocal measurements of air quality using a low-cost sensor network

Harold RickenbackerHarold Rickenbacker

Manager, EDF+Business, Clean Air & Innovation, Environmental Defense Fund

Dr. Rickenbacker is a manager at EDF+Business. In his role, he focuses on developing and executing strategies to identify, test and demonstrate the value of hyperlocal insights, leading to commitments to reduce greenhouse gas and air pollution emissions. Harold has worked closely with an interdisciplinary team at EDF to develop a How-to Guide for Hyperlocal Air Pollution Monitoring.

By engaging with stakeholder across many sectors, he also helps to manage domestic an international clean air projects. Through EDF’s work in Houston, Oakland, and London, Harold has helped to catalyze and demonstrate the technologies, business models, and partnerships needed to accelerate action to reduce pollution and improve health outcomes.

Virtual Summer Series Session 1Mapping hyperlocal air pollution to drive clean air policies

John Saffell

CTO, Alphasense Ltd.

John Saffell was co-founder of Alphasense Ltd in 1997.  He has a BSc in Chemistry and MSc from MIT (1975) and PhD in Materials Science from Cambridge University (1979). He is Chairman of the Council of Gas Detection and Environmental Measurement (CoGDEM), a member of ASTM, CEN and BSI standards committees and was previous chairman of Sensors for Water Interest Group (SWIG). Publications and patents are in the fields of water quality, air quality, sensor technology and polymer physics.

Virtual Fall Series Session 4: Air quality data analysis: life after r2

Virtual Fall Series Session 4: Can we set performance targets for low cost sensors?

Natalie SampsonNatalie Sampson

University of Michigan-Dearborn

Natalie Sampson conducts community-based research to document and address environmental health inequities. She brings interdisciplinary evidence to climate change, land use, and infrastructure planning and policy efforts in Metro Detroit. Her research is published in various peer-reviewed journals, including the American Journal of Public Health, Environmental Justice, Global Environmental Change, Health and Place, and Progress in Community Health Partnerships. Dr. Sampson co-chairs the American Public Health Association (APHA)’s Environmental Justice Subcommittee and was the 2017 recipient of the APHA Rebecca Head Award honoring, “an outstanding emerging leader from the environmental health field working at the nexus of science, policy and environmental justice.”

Virtual Summer Series Session 2: Building Youth Capacity for Community Science and Policy Advocacy in Dearborn, MI

Rebecca E. Skinner

Project Leader, San Francisco AQ / Manylabs

RES is Project Leader at San Francisco AQ, a low-cost sensor network for monitoring PM 2.5 in the city's Eastern Neighborhoods. Funded by the California Air Resources Supplemental Environmental Projects program, we are developing new ways to both a) use low-cost sensors to obtain the most accurate data; and b) display that data as user-facing, public infrastructure. RES holds a Ph.D. in City and Regional Planning from U.C. Berkeley. 

Virtual Fall Series Session 4: Data is policy: presentation as aesthetics and public infrastructure 

Orly StampferOrly Stampfer

Graduate Research Assistant, University of Washington

I am a PhD student in the Department of Environmental and Occupational Health Sciences at University of Washington. My objective is to conduct environmental health research that contributes to disease prevention through partnerships with communities, where the research addresses community priorities and can lead to practical action. I am particularly interested in working with tribes. My current research focuses on indoor and outdoor air pollution, the use of low-cost air pollution sensors, and building collaborative research partnerships.

Virtual Summer Series Session 1Development of a method for local health jurisdictions and schools in WA to use low-cost monitors for wildfire smoke preparedness

Brianne SuldovskyBrianne Suldovsky

Assistant Professor, Portland State University

Dr. Brianne Suldovsky specializes in science and environmental communication. She is particularly interested in how scientists engage the public and public understanding of controversial science. Her recent research explores scientific topics including genetic engineering (i.e. GMOs), air quality, and climate change. Dr. Suldovsky collaborates with a diversity of experts including environmental scientists, economists, geographers, climatologists, and philosophers. 

Virtual Fall Series Session 4: Measuring public opinion and knowledge of air pollution to develop community specific communication strategies

R. SubramanianR. Subramanian

Research Scientist, OSU-Efluve/CNRS

R Subramanian has a PhD in Mechanical Engineering from Carnegie Mellon University (2004). His research spans source apportionment, emissions, and atmospheric aging of ambient PM2.5 and black carbon; methane leakage from natural gas facilities; and (since 2015) the development and use of lower-cost air quality monitors. Between 2013-2018, he was a research scientist in the Center for Atmospheric Particle Studies at CMU. Since November 2018, he has been a MOPGA laureate at OSU-Efluve/CNRS, studying air pollution in cities across Sub-Saharan Africa using low-cost sensors as part of the project "Make Air Quality Great Again".

Virtual Summer Series Session 3: Moderator

Virtual Fall Series Session 2: The Africa qualité de l'Air network (AfriqAir): A continent-spanning air quality monitoring network using lower-cost sensors

Virtual Fall Series Session 4: Moderator

Alex TurnerAlexander Turner

Assistant Professor, University of Washington

Alex is an Assistant Professor of Atmospheric Sciences at the University of Washington and a research affiliate at NASA's Jet Propulsion Laboratory. Previously, he was a Miller Postdoctoral Fellow at the University of California at Berkeley. He completed his PhD in 2017 in Atmospheric Chemistry at Harvard University and his BS in 2012 in Mechanical Engineering at the University of Colorado. His research combines satellite remote sensing, numerical modeling, and Bayesian inference to improve our understanding of atmospheric chemistry and the carbon cycle.

Virtual Fall Series Session 2: Detecting annual trends in urban CO2 emissions from the transportation sector

Monika VadaliMonika Vadali

Environmental Research Scientist, Minnesota Pollution Control Agency

Dr. Vadali is an Environmental Research Scientist with the Minnesota Pollution Control Agency. Apart from regulatory air toxics modeling work she actively seeks out grants for doing community based air quality research specifically with sensors, in trying to understand how short term, neighborhood events affect air quality and impacts on quality of life. She has a special interest around air quality in schools, children’s exposures, disproportionate air quality in Environmental Justice areas and related education and outreach. She has a Bachelors and Masters in Environmental studies from India and a doctoral degree in Environmental Health from the University of Minnesota.

Virtual Summer Series Session 3Assessing Urban air quality project

Dena VallanoDena Vallano

Physical Scientist, US EPA

Dena is a Physical Scientist in the Air Quality Analysis Office at the U.S. Environmental Protection Agency’s San Francisco Region 9 office where she works on ambient air quality issues, next-generation air quality sensors, and community air monitoring. 

Virtual Fall Series Session 2: Evaluation of Low-Cost Particulate Matter Sensors for Measuring Wildfire Smoke

Marina VanderbergMarina Vanderberg

Student, Nevada State College

I am an Environmental Resource Science major with a minor in chemistry. I just graduated from Nevada state college in May 2020. I am interested in environmental pollution. My future plans are to attend graduate school, where I can bring both my knowledge of environmental science and chemistry. 

Virtual Summer Series Session 3: Clean Air Tourism: Assessment of Individual Exposure to Indoor and Outdoor Air Pollution on the Las Vegas Strip Using Portable Sensors, Las Vegas, Nevada, USA.

Leslie VelasquezLeslie Velasquez

Environmental Justice Program Manager, El Puente Green Light District

Leslie Velasquez manages environmental justice programs under El Puente’s Green Light District, a holistic 10 year community development program for the neighborhood of Los Sures, Williamsburg Brooklyn. In her work, she mobilizes community members and promotes public policy for initiatives related to a wide variety of environmental issues, with open space equity, air quality, and climate justice as major focus areas. Leslie earned a B.A. in Government and Environmental Studies from Skidmore College.

Virtual Summer Series Session 2: Empowering Community Based Organizations to Improve Air Quality in NYC Environmental Justice Communities

Heidi VreelandHeidi Vreeland

ORISE Postdoctoral Fellow, U.S. EPA

Heidi Vreeland is an Oak Ridge Institute for Science and Education (ORISE) postdoc in the Office of Research and Development at the U.S. Environmental Protection Agency (EPA). She works on multiple projects that examine how indoor air spaces are impacted by wildland fire smoke. Heidi holds a Ph.D. in Environmental Engineering from Duke University, and M.S. from the Georgia Institute of Technology.

Virtual Fall Series Session 3: Using a Particle Sensor Network to Characterize Indoor and Outdoor Air Quality of Buildings in Areas Prone to Wildfires

Sai YamanoorSai Yamanoor

IoT Applications Engineer, DesignAbly

Sai Yamanoor is an IoT Applications Engineer at Linde, an industrial gases company in Buffalo, NY. He is a co-author of two books on the use of Raspberry Pi to execute DIY projects, and he has also presented a Personal Health Dashboard system at Maker Faires across the country. Sai is also currently working on machine learning projects aimed at improving Quality of Life (QoL) for people with chronic health conditions. A portfolio of his projects is available at

Virtual Fall Series Session 3: Open Source Edge Computing Platform for Air Quality Applications

Naomi ZimmermanNaomi Zimmerman

Assistant Professor, university of British Columbia

Dr. Naomi Zimmerman is an Assistant Professor in the Dept. of Mechanical Engineering at the University of British Columbia in Vancouver, Canada and is a Canada Research Chair in Sustainability. Prior to joining UBC she was a postdoctoral fellow at the Center for Atmospheric Particle Studies at Carnegie Mellon University and also holds a PhD in Chemical Engineering from the University of Toronto.

Virtual Summer Series Session 2: Determining fleet-based vehicle emission factors using low-cost sensors: A case study in three parking garages