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Alan C. Chan

Vice President / Manager of AirNow and International Programs

Alexander Bernal

Environmental Field Technician

Angela Del Ponte

Executive Assistant

Angela L. Ekstrand

Software Engineer

Anondo D. Mukherjee PhD

Air Quality Scientist

Anthony M. Cavallaro

Software Architect

Arthur (Sky) Steiner

Environmental Field Technician

Barbara A. Lee

Director of Community Air Quality and Climate Programs

Barbara A. Austin


Bryan M. Penfold

Manager, Data Analysis Group / GIS Coordinator

Bryant S. West

Technical Editor / Conference Coordinator

Cathy E. Anthony

Director of Human Resources / Manager, Administration, Facilities, and Health & Safety Group

Charles A. Callebaut

Senior Accountant

Charles R. Scarborough

Air Quality Data Scientist

Chelsie Winborg

Environmental Field Technician

Christian T. Havranek

Software Engineer

Christopher L. Adams

Environmental Field Technician

Clinton P. MacDonald

President / Chief Scientist

Crystal D. McClure PhD

Atmospheric Scientist

Dana L. Coe

Litigation Services Program Lead

David J. Miller PhD

Geospatial Data Scientist

Douglas S. Eisinger PhD

Senior Vice President / Chief Scientist, Transportation Policy & Planning

Dylan L. Marcus

Software Engineer

Frederick W. Lurmann

Chairman / Manager of Exposure Assessment Studies

Garnet B. Erdakos PhD

Atmospheric Scientist / Project Manager

Gonzalo Parajon

Manager, Software Engineering Group

Hilary R. Hafner

Chief Operating Officer

James A. Cooper

Systems Engineer

Jana L. Schwartz

Department Manager, Corporate Operations

Jane M. Harre

Vice President / Manager, Finance, Accounting, and Contracts Group / Controller

Jeff A. Houk

Transportation / Air Quality Analyst and Emissions Modeler

Jeff J. Beamish


Jennifer L. DeWinter

Atmospheric Scientist / Project Manager, Data Systems

Joey (Jiaoyan) Huang PhD

Air Quality Scientist

Josette E. Marrero PhD

Manager, SoCal Field Group

Justin M. Guarino

Software Engineer

Kenneth J. Craig

Manager, Atmospheric and Emissions Modeling Group / Senior Atmospheric Scientist

Kevin M. Smith

Air Quality Field Technician / Project Manager

Lisa M. Churchman

Software Engineer

Lyle R. Chinkin

Chief Scientist / Chief Executive Officer

Lynn M. Alley

Atmospheric Scientist

Maggie T. Gelosi

Contract Administrator

Melissa R. Chaveste

Atmospheric Scientist

Michael C. McCarthy PhD

Senior Atmospheric Scientist / Project Manager

Michelle L. Stewart

Accounts Payable Specialist

Nathan R. Pavlovic

Lead Geospatial Data Scientist / Project Manager

Ningxin Wang PhD

Air Quality Data Scientist

Noushin Khalilifar

Information Technology Administrator

Olivia S. Ryder PhD

Atmospheric Scientist

Patrick H. Zahn

Forecasting Program Lead / Project Manager

Paul T. Roberts PhD

Chief Scientific Officer / Corporate Quality Assurance Officer / President Emeritus

Paul E. Benson PE

Senior Air Quality Scientist, Transportation Policy and Planning

Rick F. Sustek

Operations Engineer

Rodrigo A. Castillo

Software Engineer


Ruth Waltrip

Administrative Specialist

Ryan C. Moffet PhD

Manager, NorCal Field Group

Samantha J Kramer PhD

Air Quality Data Scientist

Shih Ying (Changsy) Chang PhD

Air Quality Scientist

ShihMing Huang

Group Manager, Data Analysis

Steve T. Irwin


Steven G. Brown PhD

Vice President / Manager, Data Science Department / Senior Atmospheric Scientist

Steven R. Schill PhD

Air Quality Scientist

Tami L. Lavezzo

Vice President / Senior Scientist / Senior Project Manager

Taylor J. Jones

Environmental Field Technician

Tim E. Doughty

Software Engineer

Tim L. McCarthy

Vice President / Manager, Software Engineering and Information Technology Department

Tim R. Blakey

UX/Graphic Designer

Will S McCoy

Director of Business Strategy / Program Lead for Education and Outreach