Examining public preferences for wood smoke mitigation policies in the sub-Arctic.

Outdoor air pollution is a significant problem worldwide. Policies developed to mitigate air pollution require support from local residents to be successful. While some research has examined various social and psychological metrics associated with support for some types of pollution mitigation, less is known about what variables are critical in resident support for different types of policies that help mitigate air pollution associated with woodsmoke. This research examined the extent that perceived health and economic risks, perceived uncertainties in measuring air quality and estimating risks, trust in government, and affect relate to support for three different types of outdoor wood smoke mitigation policies in Alaska. Using a multiple regression analysis of data obtained from a mail-based survey (n = 442), we characterized local affective associations with wood burning, economic concerns and health risks around heat options, perceived uncertainties, and levels of trust in government. The research identified several social and psychological variables that were important in understanding support for air pollution policies associated with wood smoke. Significantly, we found that perceived economic risk of not taking actions to mitigate outdoor air pollution from wood smoke was related to support for all three policy options. Trust in local government was positively correlated to support for education and regulatory policies, and perceived uncertainty was inversely related to support for regulations. The research also confirmed other known findings with respect to variables associated with support for air pollution regulation policies including perceived health risks and affect.

Overview of the Alaskan Layered Pollution and Chemical Analysis (ALPACA) Field Experiment.

The Alaskan Layered Pollution And Chemical Analysis (ALPACA) field experiment was a collaborative study designed to improve understanding of pollution sources and chemical processes during winter (cold climate and low-photochemical activity), to investigate indoor pollution, and to study dispersion of pollution as affected by frequent temperature inversions. A number of the research goals were motivated by questions raised by residents of Fairbanks, Alaska, where the study was held. This paper describes the measurement strategies and the conditions encountered during the January and February 2022 field experiment, and reports early examples of how the measurements addressed research goals, particularly those of interest to the residents. Outdoor air measurements showed high concentrations of particulate matter and pollutant gases including volatile organic carbon species. During pollution events, low winds and extremely stable atmospheric conditions trapped pollution below 73 m, an extremely shallow vertical scale. Tethered-balloon-based measurements intercepted plumes aloft, which were associated with power plant point sources through transport modeling. Because cold climate residents spend much of their time indoors, the study included an indoor air quality component, where measurements were made inside and outside a house to study infiltration and indoor sources. In the absence of indoor activities such as cooking and/or heating with a pellet stove, indoor particulate matter concentrations were lower than outdoors; however, cooking and pellet stove burns often caused higher indoor particulate matter concentrations than outdoors. The mass-normalized particulate matter oxidative potential, a health-relevant property measured here by the reactivity with dithiothreiol, of indoor particles varied by source, with cooking particles having less oxidative potential per mass than pellet stove particles.