California Air Resources Board

Principal Investigator/Author: Cesunica E. Ivey

Contractor: University of California, Berkeley

Sub-contractor: Haofei Yu (University of Central Florida)

Contract Number: 21RD011

Project Status: Completed July 2023

Relevant CARB programs: Environmental Justice, Air Pollution Exposure, People at Risk, exposure impacts, exposure mitigation, health analysis, Indoor Air Quality & Exposure, Indoor Air, Health Effects of Air Pollution, Health & Air Pollution, indoor exposure and mitigation, Community Health, cumulative impacts, short-term exposures and health, Wildfire Smoke & Health, reducing disparities, Racial Equity, Health Risk Assessment

Topic areas: Health & Exposure

Research Summary:

Air pollution exposure has been found to be linked with numerous adverse human health effects. Because both air pollution concentrations and the location of human individuals change spatiotemporally, understanding the time-activity patterns (TAP) is of utmost importance for the mitigation of adverse exposures and to improve the accuracy of air-pollution and health analyses. The objectives of this project are to i) provide an overview of previous efforts to characterize TAPs for air pollution and health studies, ii) critically analyze emerging methods for characterizing TAPs, and iii) provide a detailed plan for a compiling and publishing up-to-date TAPs for public and research use. The overarching goal of this project is to produce a white paper that comprehensively reviews past efforts on collecting individual TAP information and critically summarizes emerging technologies and approaches for collecting TAP data. This white paper will serve as a “one-stop-shop” for different methods and models to collect TAP information.

Keywords: communities, equity, transportation trends, public health, exposure impacts and mitigation, indoor exposure and mitigation, sustainable communities and health, environmental justice, emission sources, reducing disparities, cumulative impacts, racial equity, operationalize equity, social equity, climate change, climate friendly, criteria pollutants, ozone, priority communities, health assessment, short term exposure, long term exposure, clean air, clean technology, behavioral economics, transportation, air quality, volatile organic compounds (VOCs), smog, soil, soil emissions, particulate matter (PM), PM2.5, modeling, climate impacts, off-road equipment, air toxics, Vehicle Miles Traveled (VMT), freeways,  low carbon transportation, sustainable neighborhoods, citizen science, community science, epidemiology, health burdens, extreme events, disadvantaged communities, dose-response, health outcome, cardiovascular, respiratory, birth outcome, mental health, social determinants of health, health inequities, disproportionate exposure, health Co-Benefit Areas, heat impacts, children’s health and development, racial/ethnic groups, climate actions, equitable climate policy

Final Report: Please email research@arb.ca.gov to request the Final Report generated by this research contract.