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Abstract Background. Wildfire smoke events are increasing in frequency and intensity due to climate change. Children are especially vulnerable to health effects even at moderate smoke levels. However, it is unclear how parents respond to Air Quality Indices (AQIs) frequently used by agencies to communicate air pollution health risks.Methods. In an experiment (3 × 2 × 2 factorial design), 2,100 parents were randomly assigned to view one of twelve adapted AQI infographics that varied by visual (table, line, gauge), index type (AQI [0-500], AQHI [1-11+]), and risk level (moderate, high). Participants were told to imagine encountering the infographic in a short-term exposure scenario. They reported worry about wildfire smoke, intentions to take risk-mitigating actions (e.g., air purifier use), and support for various exposure reduction policies. Subsequently, participants were told to imagine encountering the same infographic daily during a school week in a long-term exposure scenario and again reported worry, action intentions, and policy support.Results. Parents’ responses significantly differentiated between risk levels that both pose a threat to children’s health; worry and action intentions were much higher in the high-risk group than the moderate-risk group in both short-exposure (F = 748.68 p<.001; F = 411.59, p<.001) and long-exposure scenarios (F = 470.51, p<.001; F = 212.01, p<.001). However, in the short-exposure scenario, when shown the AQHI [1-11+] with either the line or gauge visuals, parents’ action intentions were more similar between moderate- and high-risk level groups (3-way interaction, F = 6.03, p = .002).Conclusions. These results suggest some index formats such as the AQHI—rather than the AQI—may better attune parents to moderate levels of wildfire smoke being dangerous to children’s health. Our research offers insights for agencies and officials seeking to improve current public education efforts during wildfire smoke events and speaks to the critical need to educate parents and help them act short-term and long-term to protect children’s health. 

Many studies focus on the best way to communicate volcanic information during a crisis event. Because of the urgency during crisis, many of crisis communication studies find that the issues that arise during volcanic crises can often be mitigated during the ‘quiet times’ between eruptions. This project addresses how to engage the population near a volcano that is in this period of quiescence. The goal is to synthesize peer-reviewed research that investigates volcano hazard communication when the threat of eruption is low. By doing this, we will provide scientists and others working with the public recommendations for communication materials. This synthesis will offer suggestions from the academic literature for effectively engaging the public in communication about volcanos, what content messages could include, and what mediums are available to reach different audiences. These recommendations are intended to provide a baseline for scientists to think about the multiple ways to engage with the variety of audiences that live around their volcano of study; they are not intended to be a rigid formula that applies to every population. We have systematically gathered peer reviewed articles from Web of Science, Georef, and Google Scholar, using specific search terms generated through consultation with a University of Oregon librarian. Through the use of specific exclusion criteria, we have narrowed down the 330 resulting papers to a final list of 34 studies that provide suggestions on volcano communications during periods of quiescence. This project will use the advice found in these studies to create a reference for scientists as they create communication materials to disseminate to the public regarding a volcano. The results found include different mediums, such as virtual reality, hazard maps, films, social media, and various online tools that a scientist can utilize to convey their findings. There are also recommendations for different audiences, such as tourists, children, rural communities, and indigenous populations. By synthesizing the findings of these studies into a single document for a scientist to reference, we can help scientists to best engage the public in learning about a volcano during quiescence.