Experiencing record-breaking heat days affects perception of weather trends
New research from Penn’s Annenberg Public Policy Center finds that for residents in areas with record-breaking heat, the perception that the weather is getting hotter increases.
New research published by a team at the Annenberg Public Policy Center finds that experiencing days in which the temperature exceeds previous highs for that time of year affects people’s perception of weather trends.
Published in Scientific Reports, the study “Record-breaking Heat Days Disproportionately Influence Heat Perceptions” finds that living in an area with record-breaking heat effectively increases perceptions that the weather is getting hotter.
Dolores Albarracín, Alexandra Heyman Nash University Professor (left), and APPC postdoctoral fellow Timothy Hyde.
(Images: Courtesy of Annenberg Public Policy Center)
The research is co-authored by economist Timothy Hyde, a postdoctoral fellow in APPC’s Science of Science Communication Division, and psychologist and communication scholar Dolores Albarracín, the Alexandra Heyman Nash University Professor at Penn, a Penn Integrates Knowledge University Professor, and director of the Science of Science Communication Division.
The authors surveyed a nationally representative sample of 1,605 U.S. adults to determine whether more frequent record-breaking weather events affect weather change perceptions. The participants were asked, “To the best of your knowledge, how did excessive daytime heat across the United States in 2022 compare with previous years?”
Hyde and Albarracín linked answers to this question with meteorological data collected by the National Climatic Data Center from 1949, when meteorologists first implemented a reliable record of climatic data, to 2022. Doing so allowed the researchers to determine which days in 2022 constituted a heat record in a particular area before correlating heat recordings with perceptions that temperatures were higher relative to previous years.
The study finds that while record-breaking heat days have little or no effect on beliefs in the existence of climate change, they do affect evaluations of how much hotter the weather has become compared to previous years. This effect of record-heat days is such that the difference in answers between a respondent who experienced no record-breaking heat days and another who experienced 16 record-breaking heat days is as large as the average difference in responses between independent and Democratic respondents.
In Senegal, the ambitious Dakar Greenbelt project seeks to create an extensive network of ecological infrastructure in and around the city to sustainably address environmental concerns and enhance urban life. With support from David Gouverneur and Ellen Neises, Ph.D. candidate Rob Levinthal in the Weitzman School of Design led two courses that included a field trip to Dakar, that culminated in students presenting their visions for parts of the Greenbelt.
From a desert to an oasis: Penn engages in ambitious greening effort in the Sahel
Students from the Weitzman School of Design journeyed to Senegal to help with a massive ecological and infrastructural greening effort as part of their coursework. The Dakar Greenbelt aims to combat desertification and promote sustainable urban growth.
As part of an undergraduate course, Penn faculty and students curated an Arthur Ross Gallery exhibition of works from the Neumann family’s extensive collection of modern and contemporary art.
The University’s nexus for technology transfer supports researchers in their innovative efforts, from CAR T to mRNA advancements that have dramatically reshaped the world.
