Compound Heat Vulnerability in the Record-Breaking Hot Summer of 2022 over the Yangtze River Delta Region
Abstract
:1. Introduction
2. Materials and Methods
3. Results
3.1. Strong Heat Intensity and Heat Frequency in the YRD Region during Both Daytime and Nighttime
3.2. Strong Heat Risk, Strong Heat Sensitivity and Low Heat Adaptability in Most Areas of the YRD Region
3.3. Distributions and Causes of Compound Heat Vulnerability in the YRD Region
4. Discussion
5. Conclusions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Indicators | Definitions |
---|---|
Hot days | Days when Tmax ≥ 35 °C |
Hot nights | Nights when Tmin ≥ 26 °C |
Hot daytime hours | Hours when Ta ≥ 35 °C during daytime |
Hot nighttime hours | Hours when Ta ≥ 26 °C during nighttime |
Indexes | Indicators | Weights | Definitions |
---|---|---|---|
Daytime heat risk | Heat averages of hot days | 0.1954 | The average Tmax of hot days |
Heat sums of hot days | 0.2591 | The total number of hot days | |
Heat averages of hot daytime hours | 0.1731 | The average Ta of hot daytime hours | |
Heat sums of hot daytime hours | 0.3723 | The total number of hot daytime hours | |
Nighttime heat risk | Heat averages of hot nights | 0.2615 | The average Tmin of hot nights |
Heat sums of hot nights | 0.3712 | The total number of hot nights | |
Heat averages of hot nighttime hours | 0.2246 | The average Ta of hot nighttime hours | |
Heat sums of hot nighttime hours | 0.1427 | The total number of hot nighttime hours | |
Heat sensitivity | Pop | 0.2342 | Population density index |
Child | 0.2036 | Children population (under 12 years old) density index | |
Elder | 0.2221 | Elderly population (over 60 years old) density index | |
Jobless | 0.2033 | Unemployed population density index | |
Uneducated | 0.1368 | The density index of population that have never been educated | |
Heat adaptability | HCI | 0.2381 | Hospital coverage index |
PPI | 0.2618 | Purchasing power index | |
TMPI | 0.1533 | Total medicine products index | |
Well-educated | 0.2354 | Well-educated population (above high school) density index | |
Veg | 0.1115 | Vegetation proportion index |
Cause Types | Dominant Causes | Definitions |
---|---|---|
Single factor | Risk | Heat risk ≥ high-level, heat sensitivity < high-level, heat adaptability > high-level |
Sensitivity | Heat risk < high-level, heat sensitivity ≥ high-level, heat adaptability > high-level | |
Adaptability | Heat risk < high-level, heat sensitivity < high-level, heat adaptability ≤ high-level | |
Multiple factors | Risk + Sensitivity | Heat risk ≥ high-level, heat sensitivity ≥ high-level, heat adaptability > high-level |
Risk + Adaptability | Heat risk ≥ high-level, heat sensitivity < high-level, heat adaptability ≤ high-level | |
Sensitivity + Adaptability | Heat risk < high-level, heat sensitivity ≥ high-level, heat adaptability ≤ high-level | |
Risk + Sensitivity + Adaptability | Other conditions |
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Jiang, S. Compound Heat Vulnerability in the Record-Breaking Hot Summer of 2022 over the Yangtze River Delta Region. Int. J. Environ. Res. Public Health 2023, 20, 5539. https://doi.org/10.3390/ijerph20085539
Jiang S. Compound Heat Vulnerability in the Record-Breaking Hot Summer of 2022 over the Yangtze River Delta Region. International Journal of Environmental Research and Public Health. 2023; 20(8):5539. https://doi.org/10.3390/ijerph20085539
Chicago/Turabian StyleJiang, Shaojing. 2023. "Compound Heat Vulnerability in the Record-Breaking Hot Summer of 2022 over the Yangtze River Delta Region" International Journal of Environmental Research and Public Health 20, no. 8: 5539. https://doi.org/10.3390/ijerph20085539