Effectiveness of mitigation measures for future thermal environments: Comparison between inland and coastal cities in China

IF 5.1 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress Pub Date : 2024-10-01 DOI:10.1016/j.tsep.2024.102894

Yubei Liu , Satoru Iizuka , Junya Yamasaki , Chika Takatori

{"title":"Effectiveness of mitigation measures for future thermal environments: Comparison between inland and coastal cities in China","authors":"Yubei Liu , Satoru Iizuka , Junya Yamasaki , Chika Takatori","doi":"10.1016/j.tsep.2024.102894","DOIUrl":null,"url":null,"abstract":"<div><div>Cities worldwide are currently facing varying degrees of warming and increased heat-related health risks, which need to be countered by appropriate mitigation measures. This study uses a dynamical downscaling simulation technique to quantitatively assess the differences in future (the 2050s) warming and the effectiveness of various mitigation measures between inland and coastal cities. The air temperatures in the inland city (Zhengzhou, China) and the coastal city (Dalian, China) are predicted to increase by 2.3 °C and 1.8 °C in the 2050s compared to 2015. Residents in Zhengzhou and Dalian are expected to be exposed to “very strong heat stress” for 7 and 5 h of the day, respectively, in the 2050s. The mitigation measures considered include increasing the albedos of building roofs, walls, and ground, introducing green roofs, reducing anthropogenic heat release, and enhancing sea-land breezes. Among the examined measures, increasing roof albedo is found to be the most effective in both Zhengzhou and Dalian, offsetting up to 15–16 % of the air temperature rise and 10–11 % of the Universal Thermal Climate Index (UTCI) rise due to global warming. In addition, implementing a combined measure to enhance sea-land breezes with other measures is recommended for coastal cities; for example, combining with increasing roof albedo up to 0.71 can reduce air temperature by 0.2–0.6 °C and UTCI by 0.3–0.4 °C.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"55 ","pages":"Article 102894"},"PeriodicalIF":5.1000,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Thermal Science and Engineering Progress","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2451904924005122","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}

引用次数: 0

Abstract

Cities worldwide are currently facing varying degrees of warming and increased heat-related health risks, which need to be countered by appropriate mitigation measures. This study uses a dynamical downscaling simulation technique to quantitatively assess the differences in future (the 2050s) warming and the effectiveness of various mitigation measures between inland and coastal cities. The air temperatures in the inland city (Zhengzhou, China) and the coastal city (Dalian, China) are predicted to increase by 2.3 °C and 1.8 °C in the 2050s compared to 2015. Residents in Zhengzhou and Dalian are expected to be exposed to “very strong heat stress” for 7 and 5 h of the day, respectively, in the 2050s. The mitigation measures considered include increasing the albedos of building roofs, walls, and ground, introducing green roofs, reducing anthropogenic heat release, and enhancing sea-land breezes. Among the examined measures, increasing roof albedo is found to be the most effective in both Zhengzhou and Dalian, offsetting up to 15–16 % of the air temperature rise and 10–11 % of the Universal Thermal Climate Index (UTCI) rise due to global warming. In addition, implementing a combined measure to enhance sea-land breezes with other measures is recommended for coastal cities; for example, combining with increasing roof albedo up to 0.71 can reduce air temperature by 0.2–0.6 °C and UTCI by 0.3–0.4 °C.

查看原文本刊更多论文

未来热环境减灾措施的有效性：中国内陆城市与沿海城市的比较

目前，全球城市正面临着不同程度的气候变暖和与高温相关的健康风险的增加，需要采取适当的减缓措施加以应对。本研究采用动态降尺度模拟技术，定量评估了内陆城市和沿海城市未来（2050 年代）气候变暖的差异以及各种减缓措施的效果。与 2015 年相比，预计 2050 年代内陆城市（中国郑州）和沿海城市（中国大连）的气温将分别升高 2.3 ℃ 和 1.8 ℃。预计到 2050 年代，郑州和大连的居民每天将分别有 7 小时和 5 小时暴露在 "非常强烈的热压力 "之下。考虑的减缓措施包括增加建筑物屋顶、墙壁和地面的反照率，引入绿色屋顶，减少人为热量释放，以及增强海陆风。在所研究的措施中，增加屋顶反照率在郑州和大连最为有效，最多可抵消全球变暖导致的 15-16% 的气温上升和 10-11% 的通用热气候指数（UTCI）上升。此外，还建议沿海城市采取增强海陆风与其他措施相结合的措施；例如，将屋顶反照率提高到 0.71，可使气温降低 0.2-0.6 °C，通用热气候指数降低 0.3-0.4 °C。

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

Thermal Science and Engineering Progress Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

7.20

自引率

10.40%

发文量

327

审稿时长

41 days

期刊介绍： Thermal Science and Engineering Progress (TSEP) publishes original, high-quality research articles that span activities ranging from fundamental scientific research and discussion of the more controversial thermodynamic theories, to developments in thermal engineering that are in many instances examples of the way scientists and engineers are addressing the challenges facing a growing population – smart cities and global warming – maximising thermodynamic efficiencies and minimising all heat losses. It is intended that these will be of current relevance and interest to industry, academia and other practitioners. It is evident that many specialised journals in thermal and, to some extent, in fluid disciplines tend to focus on topics that can be classified as fundamental in nature, or are ‘applied’ and near-market. Thermal Science and Engineering Progress will bridge the gap between these two areas, allowing authors to make an easy choice, should they or a journal editor feel that their papers are ‘out of scope’ when considering other journals. The range of topics covered by Thermal Science and Engineering Progress addresses the rapid rate of development being made in thermal transfer processes as they affect traditional fields, and important growth in the topical research areas of aerospace, thermal biological and medical systems, electronics and nano-technologies, renewable energy systems, food production (including agriculture), and the need to minimise man-made thermal impacts on climate change. Review articles on appropriate topics for TSEP are encouraged, although until TSEP is fully established, these will be limited in number. Before submitting such articles, please contact one of the Editors, or a member of the Editorial Advisory Board with an outline of your proposal and your expertise in the area of your review.