Assessing the potential of heat stress mitigation in asymmetrical street conditions of Bhopal city

IF 2.8 4区 地球科学 Q3 METEOROLOGY & ATMOSPHERIC SCIENCES
Saurabh Kishore Ojha, Mahua Mukherjee
{"title":"Assessing the potential of heat stress mitigation in asymmetrical street conditions of Bhopal city","authors":"Saurabh Kishore Ojha, Mahua Mukherjee","doi":"10.1007/s00704-024-05175-3","DOIUrl":null,"url":null,"abstract":"<p>In Indian cities, where streets are the only affordable public space, thermal-climatic conditions have a significant impact on pedestrian activity and comfort. However, narratives are insufficient on pedestrian risk assessment in asymmetrical urban settings. Therefore, current study investigates the potential of thermal stress mitigation in the context of human biometeorological assessment in asymmetrical urban settings of Bhopal city. It initiates with the selection of a commercial street in tropical climate of Bhopal (Koppen climatic classification, Aw) with the measurement of its metrological and morphological attributes. Furthermore, it leads to an assessment of thermal stress utilizing physical survey and Envi-met simulations including the identification of critical spots. Finally, development of iterated scenario considering one major and local street with five varied street sections in symmetrical/asymmetrical condition for the EW, NWSE and NS orientation. The efficiency of mitigation measures in cooling the outdoor stress area was analysed by using Universal Thermal Climate Index (UTCI) along with mean radiant temperature (MRT) from a spatiotemporal perspective. The highest stress reduction was observed in higher asymmetrical section while lowest was recorded by lower symmetrical section. However, it is recommended to integrate high asymmetrical sections in complex urban area which can provide a better reduction (average UTCI by 3 °C, average MRT by 7 °C) to outdoor stress due to their ability of regulating efficient wind flow and shielding radiation. The evidence-based selection of street orientation and openness can adopt to optimize the urban configuration in similar climates to improve streetscape and activities from an environmental quality perspective.</p>","PeriodicalId":22945,"journal":{"name":"Theoretical and Applied Climatology","volume":null,"pages":null},"PeriodicalIF":2.8000,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Theoretical and Applied Climatology","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1007/s00704-024-05175-3","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"METEOROLOGY & ATMOSPHERIC SCIENCES","Score":null,"Total":0}
引用次数: 0

Abstract

In Indian cities, where streets are the only affordable public space, thermal-climatic conditions have a significant impact on pedestrian activity and comfort. However, narratives are insufficient on pedestrian risk assessment in asymmetrical urban settings. Therefore, current study investigates the potential of thermal stress mitigation in the context of human biometeorological assessment in asymmetrical urban settings of Bhopal city. It initiates with the selection of a commercial street in tropical climate of Bhopal (Koppen climatic classification, Aw) with the measurement of its metrological and morphological attributes. Furthermore, it leads to an assessment of thermal stress utilizing physical survey and Envi-met simulations including the identification of critical spots. Finally, development of iterated scenario considering one major and local street with five varied street sections in symmetrical/asymmetrical condition for the EW, NWSE and NS orientation. The efficiency of mitigation measures in cooling the outdoor stress area was analysed by using Universal Thermal Climate Index (UTCI) along with mean radiant temperature (MRT) from a spatiotemporal perspective. The highest stress reduction was observed in higher asymmetrical section while lowest was recorded by lower symmetrical section. However, it is recommended to integrate high asymmetrical sections in complex urban area which can provide a better reduction (average UTCI by 3 °C, average MRT by 7 °C) to outdoor stress due to their ability of regulating efficient wind flow and shielding radiation. The evidence-based selection of street orientation and openness can adopt to optimize the urban configuration in similar climates to improve streetscape and activities from an environmental quality perspective.

Abstract Image

评估在博帕尔市不对称街道条件下减轻热应力的潜力
在印度城市,街道是唯一可负担得起的公共空间,热气候条件对行人的活动和舒适度有重大影响。然而,关于非对称城市环境中行人风险评估的叙述并不充分。因此,本研究调查了在博帕尔市非对称城市环境中进行人体生物气象评估时减轻热应力的潜力。研究首先选择了博帕尔热带气候下的一条商业街(Koppen 气候分类,Aw),并对其计量和形态属性进行了测量。此外,还利用物理调查和 Envi-met 模拟对热应力进行评估,包括确定临界点。最后,在对称/不对称条件下,针对东偏西、西北偏南和南偏北方向,对一条主要街道和地方街道的五个不同街道路段进行迭代方案开发。通过使用通用热气候指数(UTCI)和平均辐射温度(MRT),从时空角度分析了缓解措施在冷却室外压力区方面的效率。在较高的非对称区段观察到的压力降低幅度最大,而在较低的对称区段观察到的压力降低幅度最小。不过,建议在复杂的城市区域整合高不对称路段,因为它们能够有效调节风流和屏蔽辐射,从而更好地降低室外压力(平均 UTCI 降低 3 °C,平均 MRT 降低 7 °C)。以证据为基础选择街道的朝向和开敞度,可以优化类似气候条件下的城市配置,从环境质量的角度改善街道景观和活动。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Theoretical and Applied Climatology
Theoretical and Applied Climatology 地学-气象与大气科学
CiteScore
6.00
自引率
11.80%
发文量
376
审稿时长
4.3 months
期刊介绍: Theoretical and Applied Climatology covers the following topics: - climate modeling, climatic changes and climate forecasting, micro- to mesoclimate, applied meteorology as in agro- and forestmeteorology, biometeorology, building meteorology and atmospheric radiation problems as they relate to the biosphere - effects of anthropogenic and natural aerosols or gaseous trace constituents - hardware and software elements of meteorological measurements, including techniques of remote sensing
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信