Intraday adaptation to extreme temperatures in outdoor activity
Linkages between climate and human activity are often calibrated at daily or monthly resolutions, which lacks the granularity to observe intraday adaptation behaviors. Ignoring this adaptation margin could mischaracterize the health consequences of future climate change. Here, we construct an hourly...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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Springer Science and Business Media LLC
2024
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| Online Access: | https://hdl.handle.net/1721.1/156546 |
| _version_ | 1824458286324252672 |
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| author | Fan, Yichun Wang, Jianghao Obradovich, Nick Zheng, Siqi |
| author2 | Massachusetts Institute of Technology. Department of Urban Studies and Planning |
| author_facet | Massachusetts Institute of Technology. Department of Urban Studies and Planning Fan, Yichun Wang, Jianghao Obradovich, Nick Zheng, Siqi |
| author_sort | Fan, Yichun |
| collection | MIT |
| description | Linkages between climate and human activity are often calibrated at daily or monthly resolutions, which lacks the granularity to observe intraday adaptation behaviors. Ignoring this adaptation margin could mischaracterize the health consequences of future climate change. Here, we construct an hourly outdoor leisure activity database using billions of cell phone location requests in 10,499 parks in 2017 all over China to investigate the within-day outdoor activity rhythm. We find that hourly temperatures above 30 °C and 35 °C depress outdoor leisure activities by 5% (95% confidence interval, CI 3–7%) and by 13% (95% CI 10–16%) respectively. This activity-depressing effect is larger than previous daily or monthly studies due to intraday activity substitution from noon and afternoon to morning and evening. Intraday adaptation is larger for locations and dates with time flexibility, for individuals more frequently exposed to heat, and for parks situated in urban areas. Such within-day adaptation substantially reduces heat exposure, yet it also delays the active time at night by about half an hour, with potential side effect on sleep quality. Combining empirical estimates with outputs from downscaled climate models, we show that unmitigated climate change will generate sizable activity-depressing and activity-delaying effects in summer when projected on an hourly resolution. Our findings call for more attention in leveraging real-time activity data to understand intraday adaptation behaviors and their associated health consequences in climate change research. |
| first_indexed | 2024-09-23T14:19:55Z |
| format | Article |
| id | mit-1721.1/156546 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2025-02-19T04:23:29Z |
| publishDate | 2024 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1565462025-01-03T04:34:11Z Intraday adaptation to extreme temperatures in outdoor activity Fan, Yichun Wang, Jianghao Obradovich, Nick Zheng, Siqi Massachusetts Institute of Technology. Department of Urban Studies and Planning Massachusetts Institute of Technology. Center for Real Estate Linkages between climate and human activity are often calibrated at daily or monthly resolutions, which lacks the granularity to observe intraday adaptation behaviors. Ignoring this adaptation margin could mischaracterize the health consequences of future climate change. Here, we construct an hourly outdoor leisure activity database using billions of cell phone location requests in 10,499 parks in 2017 all over China to investigate the within-day outdoor activity rhythm. We find that hourly temperatures above 30 °C and 35 °C depress outdoor leisure activities by 5% (95% confidence interval, CI 3–7%) and by 13% (95% CI 10–16%) respectively. This activity-depressing effect is larger than previous daily or monthly studies due to intraday activity substitution from noon and afternoon to morning and evening. Intraday adaptation is larger for locations and dates with time flexibility, for individuals more frequently exposed to heat, and for parks situated in urban areas. Such within-day adaptation substantially reduces heat exposure, yet it also delays the active time at night by about half an hour, with potential side effect on sleep quality. Combining empirical estimates with outputs from downscaled climate models, we show that unmitigated climate change will generate sizable activity-depressing and activity-delaying effects in summer when projected on an hourly resolution. Our findings call for more attention in leveraging real-time activity data to understand intraday adaptation behaviors and their associated health consequences in climate change research. 2024-09-03T21:02:46Z 2024-09-03T21:02:46Z 2023 2024-09-03T20:55:57Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/156546 Fan, Y., Wang, J., Obradovich, N. et al. Intraday adaptation to extreme temperatures in outdoor activity. Sci Rep 13, 473 (2023). en 10.1038/s41598-022-26928-y Scientific Reports Creative Commons Attribution https://creativecommons.org/licenses/by/4.0/ application/pdf Springer Science and Business Media LLC Springer |
| spellingShingle | Fan, Yichun Wang, Jianghao Obradovich, Nick Zheng, Siqi Intraday adaptation to extreme temperatures in outdoor activity |
| title | Intraday adaptation to extreme temperatures in outdoor activity |
| title_full | Intraday adaptation to extreme temperatures in outdoor activity |
| title_fullStr | Intraday adaptation to extreme temperatures in outdoor activity |
| title_full_unstemmed | Intraday adaptation to extreme temperatures in outdoor activity |
| title_short | Intraday adaptation to extreme temperatures in outdoor activity |
| title_sort | intraday adaptation to extreme temperatures in outdoor activity |
| url | https://hdl.handle.net/1721.1/156546 |
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