Increased Population Exposure to Heat and Wet Extremes Moving From Chinese to Global 1.5 or 2.0°C Warming DOI
Peihua Qin, Zhenghui Xie

Journal of Geophysical Research Atmospheres, Journal Year: 2023, Volume and Issue: 128(21)

Published: Oct. 27, 2023

Abstract The Paris Agreement proposed two global warming levels relative to the preindustrial period, with ideal objective of 1.5°C and an upper boundary 2.0 °C. However, years when temperature will first reach 1.5 or 2.0°C vary in different regions. Therefore, climate extremes their population exposure are still not clear at regional levels. This study investigated China Chinese 16 CMIP6 models under middle SSP245 scenario. In China, year is projected occur 2020 2035 for warming. These values more than 10 earlier corresponding 2030 2049. Population percentile‐based heat greatly increase those occurs due increases extremes, absolute extreme indices decrease from joint impacts decreases. Furthermore, warming, about 344 million people experience increased heat, wet dry around 468 371 be affected by heat–wet heat–dry respectively. Thus, a adaptive strategy should cope future possible natural hazards caused extremes.

Language: Английский

Systematic review of the efficacy of data-driven urban building energy models during extreme heat in cities: Current trends and future outlook DOI
Nilabhra Mondal, Prashant Anand, Ansar Khan

et al.

Building Simulation, Journal Year: 2024, Volume and Issue: 17(5), P. 695 - 722

Published: March 11, 2024

Language: Английский

Citations

10
Understanding the impact of heatwave on urban heat in greater Sydney: Temporal surface energy budget change with land types DOI Creative Commons
Jing Kong, Yongling Zhao, Dominik Strebel

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 903, P. 166374 - 166374

Published: Aug. 26, 2023

The impact of heatwaves (HWs) on urban heat island (UHI) is a contentious topic with contradictory research findings. A comprehensive understanding the response and rural areas to HWs, considering underlying cause surface energy budget changes, remains elusive. This study attempts address this gap by investigating 2020 HW event in Greater Sydney Area using Advanced Weather Research Forecasting (WRF) model 250-m high resolution. Findings indicate that intensifies nighttime UHI approximately 4 °C. An analysis budgets reveals store more during due receiving solar radiation less evapotranspiration compared areas. maximum storage flux can be around 200 W/m2 higher than post-HW. stored released at nightime, raising air temperature Forests savannas have relatively lower fluxes transpiration albedo, only 50 In contrast, negative synergistic effect detected between 2-m HW. may because other meteorological conditions including wind substantial impacts pattern. strong hot dry winds coming from west resulted western district, intra-city disparities are higher. Meanwhile, forest area also experiences temperatures westward winds. addition, changes direction alter distribution northern region. findings present provide some insights into mitigation

Language: Английский

Citations

18
Understanding the synergy between heat waves and the built environment: a three-decade systematic review informing policies for mitigating urban heat island in cities DOI Creative Commons
K.K. Joshi, Ansar Khan, Prashant Anand

et al.

Sustainable Earth Reviews, Journal Year: 2024, Volume and Issue: 7(1)

Published: Aug. 2, 2024

Abstract The escalating frequencies and intensities of heat waves have become a global concern in the face climate change. Cities are increasingly vulnerable to overheating due amplification urban island (UHI) during waves. Factors influencing synergetic impact UHI on built environment complex, mainly including degree urbanization, land use patterns, building morphology, thermal properties construction materials, variations moisture fluxes sinks. Researchers worldwide extensively exploring characteristics waves, factors areas, environments, as well possible mitigation measures. However, existing literature lacks holistic comprehensive understanding complexities between that is needed for planning implementing effective measures future. This study systematically presents overview past three decades related spanning wave definitions, impacts buildings, energy, occupant health, infrastructure, measures, case studies, best practices, future considerations, challenges. objective synthesize current knowledge highlight gaps understanding, providing foundation research. review suggests combination strategies across various scales, from individual buildings entire neighborhoods cities, can contribute effectively mitigating heat. includes prioritizing compact mid-rise with light-colored exteriors, integrating large parks green spaces, utilizing cool super ensuring insulation, employing passive mixed-mode cooling ventilation systems incorporating sustainable technology innovation. Additionally, community participation social equity crucial addressing vulnerabilities at local level. It highlights complexity relationship environment, emphasizing need interdisciplinary approaches development outcomes formulation informed policies mitigate adverse surroundings.

Language: Английский

Citations

8
Evaluation of the intensity of urban heat islands during heat waves using local climate zones in the semi-arid, continental climate of Tehran DOI
Gholamreza Roshan,

Saleh Arekhi,

Zainab Bayganeh

et al.

Urban Climate, Journal Year: 2024, Volume and Issue: 56, P. 102079 - 102079

Published: July 1, 2024

Language: Английский

Citations

5
Comprehensive assessment of daytime, nighttime and compound heatwave risk in East China DOI

Shangyu Ding,

An Chen

Natural Hazards, Journal Year: 2024, Volume and Issue: 120(8), P. 7245 - 7263

Published: March 12, 2024

Language: Английский

Citations

4
Changes in urban heat island intensity during heatwaves in China DOI Creative Commons
Zitong Shi, Gensuo Jia

Environmental Research Letters, Journal Year: 2024, Volume and Issue: 19(7), P. 074061 - 074061

Published: July 1, 2024

Abstract With rising occurrence of heatwaves and ongoing urban expansion, residents are facing severer heat-related stress under the combined effects heat island (UHI) heatwaves. Controversial results, however, have been reported regarding whether UHI is exacerbated during In this study, we used fused ground satellite daily maximum air temperature data to evaluate variation intensities across 225 major cities in mainland China 2003–2020. Overall, areas showed an enhanced intensity up 0.94 °C heatwaves, nearly double compared normal periods. The interaction between UHIs was sensitive local background precipitation. Under similar urbanization vegetation greenness, amplified warming more pronounced wet climates. megapolitan regions characterized by continuous development, intensified much stronger due accumulation within urbanized advection from neighboring cities. Our results contribute understanding interactions which may strongly increase risk Further work on variations future consequent impacts human health energy use needed.

Language: Английский

Citations

4
Urban heat islands characterized by six thermal indicators DOI
Chenguang Wang, Wenfeng Zhan, Long Li

et al.

Building and Environment, Journal Year: 2023, Volume and Issue: 244, P. 110820 - 110820

Published: Sept. 9, 2023

Language: Английский

Citations

8
Changes in urban heat island intensity with background temperature and humidity and their associations with near-surface thermodynamic processes DOI Creative Commons
Kyeongjoo Park, Jong‐Jin Baik, Han‐Gyul Jin

et al.

Urban Climate, Journal Year: 2024, Volume and Issue: 58, P. 102191 - 102191

Published: Nov. 1, 2024

Language: Английский

Citations

1
Influence of Environmental Factors on Pedestrian Summer Vitality in Urban Pedestrian Streets in Cold Regions Guided by Thermal Comfort: A Case Study of Sanlitun—Beijing, China DOI Open Access
Wenyu Zhou,

Jinjiang Zhang,

Li Xuan

et al.

Sustainability, Journal Year: 2024, Volume and Issue: 16(23), P. 10419 - 10419

Published: Nov. 28, 2024

In the context of increasingly extreme high temperatures during summer in cold regions, spatial vitality urban blocks is significantly affected. order to enhance sustainable neighborhoods, this study explores mechanisms street elements and under guidance thermal comfort. Taking an pedestrian Sanlitun, Beijing, a day as research subject, systematically analyzed impact environmental factors such orientation, aspect ratio, three-dimensional greenery trees, tree spacing on comfort space. By quantitatively analyzing relationship between different spaces, reveals by which usability streets. The results indicate that shows gradually increasing trend throughout day, particularly 12:00 16:00, when affects people’s vitality. Furthermore, univariate analysis ratio primary factor influencing southern section Sanlitun Taikoo Li street, with characteristic average 8.28 over week. Finally, multi-factor show that, enhancing vitality, priority should be given interactions greenery, temperature, physiological equivalent where correlation coefficient 0.70, temperature 0.63, both showing positive correlations. Research planning, reasonable building (1:2 1:4) scientific green design are key. carefully controlling planting density configuration optimal space effects can achieved. This proposes strategies optimizing improving comfort, aiming regions advocate for development model combines ecological social benefits.

Language: Английский

Citations

1
Urban Thermal Response in an Extreme Heat Event at the Micro-Scale DOI
Huifang Li,

Yu Wu,

Huanfeng Shen

et al.

Published: Jan. 1, 2024

Frequent extreme heat events have great impacts on both urban ecology and residents, also induce an unusual thermal response in areas, which is still unclear has been rarely studied, especially at the micro-scale. This study compared simulated environment of event a typical summer day. The results show that: 1) A satisfactory simulation accuracy for micro-thermal can be obtained ENVI-met software, as R2 values air temperature relative humidity were higher than 0.94. 2) Temperatures are generally day, vegetation-covered areas relatively large differences rapid change temperature. 3) cooling effect vegetation suppressed during events, due to weakened evapotranspiration caused by extremely high temperatures water stress. 4) drivers temperature, mean radiant land surface different micro-scale, humidity, shortwave radiation sensible flux, respectively. Our research work will beneficial understanding mechanism providing support sustainable design development.

Language: Английский

Citations

0