Rapidly declining remarkability of temperature anomalies may obscure public perception of climate change

Proceedings of the National Academy of Sciences of the United States of America - Tập 116 Số 11 - Trang 4905-4910 - 2019
Frances C. Moore1, Nick Obradovich2, Flavio Lehner3, Patrick Baylis4
1Department of Environmental Science and Policy, University of California, Davis, CA 95616.
2Media Lab, Massachusetts Institute of Technology, Cambridge, MA 02139;
3Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO 80305
4Vancouver School of Economics, University of British Columbia, Vancouver, BC, Canada V6T 1Z4

Tóm tắt

SignificanceClimate change exposes people to conditions that are historically unusual but that will become increasingly common over time. What kind of weather do people think of as normal or unusual under these changing conditions? We use the volume of social media posts about weather to measure the remarkability of different temperatures and show that remarkability changes rapidly with repeated exposure to unusual temperatures. The reference point for normal conditions appears to be based on weather experienced between 2 and 8 y ago. This rapidly shifting normal baseline means warming noticed by the general public may not be clearly distinguishable from zero over the 21st century, with potential implications for both the acceptance of global warming and public pressure for mitigation policies.

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Proceedings of the National Academy of Sciences of the United States of America

Tập 116 Số 11

4905-4910

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