Pub Date : 2024-09-06DOI: 10.1038/s44284-024-00128-3
Valeriy Y. Ivanov, Vinh Ngoc Tran, Weichen Huang, Kevin Murphy, Fariborz Daneshvar, Jeff H. Bednar, G. Aaron Alexander, Jongho Kim, Daniel B. Wright
Despite substantial investments in urban stormwater management systems around the world, cities are experiencing soaring impacts that are inconsistent with assumed levels of flood protection. This suggests that there are flaws in existing stormwater design methods and guidelines, which currently do not properly account for the complexity of flood flows in urban landscapes and their interactions with infrastructure and with natural and artificial water bodies.
{"title":"Urban flooding is intensified by outdated design guidelines and a lack of a systems approach","authors":"Valeriy Y. Ivanov, Vinh Ngoc Tran, Weichen Huang, Kevin Murphy, Fariborz Daneshvar, Jeff H. Bednar, G. Aaron Alexander, Jongho Kim, Daniel B. Wright","doi":"10.1038/s44284-024-00128-3","DOIUrl":"10.1038/s44284-024-00128-3","url":null,"abstract":"Despite substantial investments in urban stormwater management systems around the world, cities are experiencing soaring impacts that are inconsistent with assumed levels of flood protection. This suggests that there are flaws in existing stormwater design methods and guidelines, which currently do not properly account for the complexity of flood flows in urban landscapes and their interactions with infrastructure and with natural and artificial water bodies.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"1 10","pages":"626-627"},"PeriodicalIF":0.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142328596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-05DOI: 10.1038/s44284-024-00123-8
We have constructed a framework to assess sunlight duration in cities, revealing a substantial reduction in available sunlight owing to cloud cover and three-dimensional urban structures. Our study underscores the imperative for integrated approaches to urban planning, using ‘digital twin’ technologies — virtual representations of real urban environments — that emphasize sufficient access to sunlight.
{"title":"Cloud cover and urban structures drastically reduce sunlight in cities","authors":"","doi":"10.1038/s44284-024-00123-8","DOIUrl":"10.1038/s44284-024-00123-8","url":null,"abstract":"We have constructed a framework to assess sunlight duration in cities, revealing a substantial reduction in available sunlight owing to cloud cover and three-dimensional urban structures. Our study underscores the imperative for integrated approaches to urban planning, using ‘digital twin’ technologies — virtual representations of real urban environments — that emphasize sufficient access to sunlight.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"1 10","pages":"631-632"},"PeriodicalIF":0.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142328551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-04DOI: 10.1038/s44284-024-00118-5
Luyao Wang, Albert Saiz, Weipeng Li
Physical geography has long been identified as critical for urban development, land use and environmental outcomes in cities worldwide. However, the literature has yet to provide comprehensive, quantitative analyses of the global extent and impact of urban geographic barriers. Here we introduce three novel indexes: the share of natural barriers, nonconvexity (a measure of natural fragmentation) and the average road detour, to measure and study the practical reach and effects of natural constraints around global cities. We calculate these indexes for areas in and around four separate global city-boundary definitions, augmenting the original data with additional variables. We find that natural barriers lead to more complex transportation environments and are associated with higher urban densities, smaller urbanized footprints, taller buildings and less pollution but also with lower incomes and smaller populations. To draw meaningful policy conclusions, comparative research about environmental, economic and social outcomes across global cities should always account for their surrounding geographies. This Article calculates how three barriers (water, steep mountains and national borders) limit urban growth and interconnectivity for more than 13,000 cities around the world. It found that natural barriers are associated with denser, smaller, greener and less land-hungry cities.
{"title":"Natural fragmentation increases urban density but impedes transportation and city growth worldwide","authors":"Luyao Wang, Albert Saiz, Weipeng Li","doi":"10.1038/s44284-024-00118-5","DOIUrl":"10.1038/s44284-024-00118-5","url":null,"abstract":"Physical geography has long been identified as critical for urban development, land use and environmental outcomes in cities worldwide. However, the literature has yet to provide comprehensive, quantitative analyses of the global extent and impact of urban geographic barriers. Here we introduce three novel indexes: the share of natural barriers, nonconvexity (a measure of natural fragmentation) and the average road detour, to measure and study the practical reach and effects of natural constraints around global cities. We calculate these indexes for areas in and around four separate global city-boundary definitions, augmenting the original data with additional variables. We find that natural barriers lead to more complex transportation environments and are associated with higher urban densities, smaller urbanized footprints, taller buildings and less pollution but also with lower incomes and smaller populations. To draw meaningful policy conclusions, comparative research about environmental, economic and social outcomes across global cities should always account for their surrounding geographies. This Article calculates how three barriers (water, steep mountains and national borders) limit urban growth and interconnectivity for more than 13,000 cities around the world. It found that natural barriers are associated with denser, smaller, greener and less land-hungry cities.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"1 10","pages":"642-653"},"PeriodicalIF":0.0,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142328571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-02DOI: 10.1038/s44284-024-00120-x
Shengbiao Wu, Bin Chen, Jiafu An, Chen Lin, Peng Gong
Sunlight exposure in urban areas is essential for human health, yet its reduction due to cloud cover and complex 3D urban architecture is often overlooked. Here we introduce a framework that combines natural day length variations, cloud cover and 3D urban structures to assess sunlight duration in cities. Applying this framework to 1,353 US cities, we found a significant decrease of 2,896 h (121 days) in available sunlight for 2020, with cloud cover accounting for 2,448 h (102 days) and urban structures contributing to a 448-h (19-day) loss. With the observed increasing trends in cloud cover and urbanization, sunlight loss is likely to worsen. Our study highlights the pressing need for interdisciplinary urban planning strategies that prioritize adequate access to natural sunlight. Urban architecture and cloud cover from climate change have reduced sunlight exposure for city residents. Examining 1,353 US cities with light detection and ranging (LiDAR) data to map day length, sunshine, cloud cover and urban structures, this study finds that cloud cover and three-dimensional urban structures account for an equivalent reduction of 102 and 19 days of sunlight, respectively, with this reduction being expected to intensify.
{"title":"The interplay of cloud cover and 3D urban structures reduces human access to sunlight","authors":"Shengbiao Wu, Bin Chen, Jiafu An, Chen Lin, Peng Gong","doi":"10.1038/s44284-024-00120-x","DOIUrl":"10.1038/s44284-024-00120-x","url":null,"abstract":"Sunlight exposure in urban areas is essential for human health, yet its reduction due to cloud cover and complex 3D urban architecture is often overlooked. Here we introduce a framework that combines natural day length variations, cloud cover and 3D urban structures to assess sunlight duration in cities. Applying this framework to 1,353 US cities, we found a significant decrease of 2,896 h (121 days) in available sunlight for 2020, with cloud cover accounting for 2,448 h (102 days) and urban structures contributing to a 448-h (19-day) loss. With the observed increasing trends in cloud cover and urbanization, sunlight loss is likely to worsen. Our study highlights the pressing need for interdisciplinary urban planning strategies that prioritize adequate access to natural sunlight. Urban architecture and cloud cover from climate change have reduced sunlight exposure for city residents. Examining 1,353 US cities with light detection and ranging (LiDAR) data to map day length, sunshine, cloud cover and urban structures, this study finds that cloud cover and three-dimensional urban structures account for an equivalent reduction of 102 and 19 days of sunlight, respectively, with this reduction being expected to intensify.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"1 10","pages":"686-694"},"PeriodicalIF":0.0,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142328592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-29DOI: 10.1038/s44284-024-00112-x
Christian Isendahl, Vernon L. Scarborough
Urban archaeology in the humid tropics advances a new and diversified ontology of urban spatial forms, functions and processes that enriches and expands the frame of reference for what cities were in the past, what they are in the present and what they can be in the future.
{"title":"Tropical archaeology expands the urban frame of reference","authors":"Christian Isendahl, Vernon L. Scarborough","doi":"10.1038/s44284-024-00112-x","DOIUrl":"10.1038/s44284-024-00112-x","url":null,"abstract":"Urban archaeology in the humid tropics advances a new and diversified ontology of urban spatial forms, functions and processes that enriches and expands the frame of reference for what cities were in the past, what they are in the present and what they can be in the future.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"1 9","pages":"540-541"},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142091175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-29DOI: 10.1038/s44284-024-00114-9
Tilmann Heil
Maintaining one’s reputation is a central concern in Latin American cities, and the doormen of buildings have a crucial part to play. Tilmann Heil delves deeper into the intricate dynamics of Rio de Janeiro’s entry halls and highlights how they operate as urban microcosms in which reputation, security and care materialize across structural inequality.
{"title":"A wise doorman’s hidden treasures","authors":"Tilmann Heil","doi":"10.1038/s44284-024-00114-9","DOIUrl":"10.1038/s44284-024-00114-9","url":null,"abstract":"Maintaining one’s reputation is a central concern in Latin American cities, and the doormen of buildings have a crucial part to play. Tilmann Heil delves deeper into the intricate dynamics of Rio de Janeiro’s entry halls and highlights how they operate as urban microcosms in which reputation, security and care materialize across structural inequality.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"1 9","pages":"620-620"},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142091170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-29DOI: 10.1038/s44284-024-00125-6
Interdisciplinary dialogue is crucial in framing new perspectives on urban life and in developing analytical frameworks suited to the complex realities of urban contexts.
跨学科对话对于构建城市生活的新视角和制定适合城市复杂现实的分析框架至关重要。
{"title":"Interdisciplinary urban research opens many doors","authors":"","doi":"10.1038/s44284-024-00125-6","DOIUrl":"10.1038/s44284-024-00125-6","url":null,"abstract":"Interdisciplinary dialogue is crucial in framing new perspectives on urban life and in developing analytical frameworks suited to the complex realities of urban contexts.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"1 9","pages":"535-535"},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44284-024-00125-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142091224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-29DOI: 10.1038/s44284-024-00099-5
Thaisa Comelli, Jonathan Ensor, Maria Evangelina Filippi, Max Hope, Robert Marchant, Mark Pelling, Jessica Thorn
Delivering fair, long-term resilience for tomorrow’s cities means acting now to break cycles of risk accumulation. Inclusive future visioning can help by placing the voices and experiences of those at risk at the start of urban policy, planning and project processes, and integrating this with the best science to reimagine what cities and neighborhoods are for, and could be in the long-term.
{"title":"Freeing imagination for fair and resilient future cities","authors":"Thaisa Comelli, Jonathan Ensor, Maria Evangelina Filippi, Max Hope, Robert Marchant, Mark Pelling, Jessica Thorn","doi":"10.1038/s44284-024-00099-5","DOIUrl":"10.1038/s44284-024-00099-5","url":null,"abstract":"Delivering fair, long-term resilience for tomorrow’s cities means acting now to break cycles of risk accumulation. Inclusive future visioning can help by placing the voices and experiences of those at risk at the start of urban policy, planning and project processes, and integrating this with the best science to reimagine what cities and neighborhoods are for, and could be in the long-term.","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"1 9","pages":"536-539"},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142091187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-29DOI: 10.1038/s44284-024-00124-7
Allison B. Laskey
{"title":"Commercializing rental markets through digital technologies","authors":"Allison B. Laskey","doi":"10.1038/s44284-024-00124-7","DOIUrl":"10.1038/s44284-024-00124-7","url":null,"abstract":"","PeriodicalId":501700,"journal":{"name":"Nature Cities","volume":"1 9","pages":"542-542"},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142091181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：