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Article: Satellite mapping of urban built-up heights reveals extreme infrastructure gaps and inequalities in the Global South

TitleSatellite mapping of urban built-up heights reveals extreme infrastructure gaps and inequalities in the Global South
Authors
Keywords3-D urban form
built-up height
built-up infrastructure
city
inequality
Issue Date2022
Citation
Proceedings of the National Academy of Sciences of the United States of America, 2022, v. 119, n. 46, article no. e2214813119 How to Cite?
AbstractInformation on urban built-up infrastructure is essential to understand the role of cities in shaping environmental, economic, and social outcomes. The lack of data on built-up heights over large areas has limited our ability to characterize urban infrastructure and its spatial variations across the world. Here, we developed a global atlas of urban built-up heights circa 2015 at 500-m resolution from the Sentinel-1 Ground Range Detected satellite data. Results show extreme gaps in per capita urban built-up infrastructure in the Global South compared with the global average, and even larger gaps compared with the average levels in the Global North. Per capita urban built-up infrastructures in some countries in the Global North are more than 30 times higher than those in the Global South. The results also show that the built-up infrastructure in 45 countries in the Global North combined, with ∼16% of the global population, is roughly equivalent to that of 114 countries in the Global South, with ∼74% of the global population. The inequality in urban built-up infrastructure, as measured by an inequality index, is large in most countries, but the largest in the Global South compared with the Global North. Our analysis reveals the scale of infrastructure demand in the Global South that is required in order to meet sustainable development goals.
Persistent Identifierhttp://hdl.handle.net/10722/329889
ISSN
2023 Impact Factor: 9.4
2023 SCImago Journal Rankings: 3.737
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhou, Yuyu-
dc.contributor.authorLi, Xuecao-
dc.contributor.authorChen, Wei-
dc.contributor.authorMeng, Lin-
dc.contributor.authorWu, Qiusheng-
dc.contributor.authorGong, Peng-
dc.contributor.authorSeto, Karen C.-
dc.date.accessioned2023-08-09T03:36:05Z-
dc.date.available2023-08-09T03:36:05Z-
dc.date.issued2022-
dc.identifier.citationProceedings of the National Academy of Sciences of the United States of America, 2022, v. 119, n. 46, article no. e2214813119-
dc.identifier.issn0027-8424-
dc.identifier.urihttp://hdl.handle.net/10722/329889-
dc.description.abstractInformation on urban built-up infrastructure is essential to understand the role of cities in shaping environmental, economic, and social outcomes. The lack of data on built-up heights over large areas has limited our ability to characterize urban infrastructure and its spatial variations across the world. Here, we developed a global atlas of urban built-up heights circa 2015 at 500-m resolution from the Sentinel-1 Ground Range Detected satellite data. Results show extreme gaps in per capita urban built-up infrastructure in the Global South compared with the global average, and even larger gaps compared with the average levels in the Global North. Per capita urban built-up infrastructures in some countries in the Global North are more than 30 times higher than those in the Global South. The results also show that the built-up infrastructure in 45 countries in the Global North combined, with ∼16% of the global population, is roughly equivalent to that of 114 countries in the Global South, with ∼74% of the global population. The inequality in urban built-up infrastructure, as measured by an inequality index, is large in most countries, but the largest in the Global South compared with the Global North. Our analysis reveals the scale of infrastructure demand in the Global South that is required in order to meet sustainable development goals.-
dc.languageeng-
dc.relation.ispartofProceedings of the National Academy of Sciences of the United States of America-
dc.subject3-D urban form-
dc.subjectbuilt-up height-
dc.subjectbuilt-up infrastructure-
dc.subjectcity-
dc.subjectinequality-
dc.titleSatellite mapping of urban built-up heights reveals extreme infrastructure gaps and inequalities in the Global South-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1073/pnas.2214813119-
dc.identifier.pmid36343227-
dc.identifier.scopuseid_2-s2.0-85141409529-
dc.identifier.volume119-
dc.identifier.issue46-
dc.identifier.spagearticle no. e2214813119-
dc.identifier.epagearticle no. e2214813119-
dc.identifier.eissn1091-6490-
dc.identifier.isiWOS:000980665600009-

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