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Evaluating the improvements of thermal comfort by different natural elements within courtyards in Singapore Urban Clim. (IF 6.663) Pub Date : 2022-08-09 Jiayu Li, Bohong Zheng, Komi Bernard Bedra
Heat mitigating natural elements such as trees, shrubs, grass and water have been broadly studied, while their effects on semi-open spaces have been almost ignored. This paper aims at measuring and comparing the heat mitigating effects of four natural elements in Singaporean courtyards. Four typical courtyard scenarios (each featuring a natural element) are simulated in Envi-met and a comprehensive
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Role of local climate zone and space syntax on land surface temperature (case study: Tehran) Urban Clim. (IF 6.663) Pub Date : 2022-08-09 Saeedeh Nasehi, Ahmadreza Yavari, Esmail Salehi, Rohinton Emmanuel
Land surface temperature (LST) is one of the key parameters in the physics of land surface processes from local through global scales. Although many definitions and classifications have been proposed to better understand the causes and evolution of LST, not enough attention has been paid to their relationship to factors such as socioeconomic characteristics and spatial configuration of cities and the
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Long-term trend analysis of criteria pollutants in megacity of Delhi: Failure or success of control policies Urban Clim. (IF 6.663) Pub Date : 2022-08-10 Nidhi Verma, S.M. Shiva Nagendra
The study aimed to analyze the long-term trend of four criteria pollutants (PM2.5 and NO2 during 2006–2019; SO2 and CO during 2000–2019) and the effect of pollution control measures in Delhi. The hourly data of PM2.5 and NO2 was taken from six air quality monitoring stations while SO2 and CO data was retrieved from MERRA reanalysis (Modern-Era Retrospective Analysis for Research and Applications) products
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Developing and classifying urban biomes as a basis for nature-based solutions Urban Clim. (IF 6.663) Pub Date : 2022-08-11 Augusto Akio Lucchezi Miyahara, Tom Wild, Adriana Afonso Sandre, Paulo Renato Mesquita Pellegrino, Carlos Alberto da Silva Filho, Marcos Silveira Buckeridge, Giuliano Maselli Locosselli
Urbanization is a major driver of environmental change, which calls for multifunctional and comprehensive actions such as Nature-based Solutions (NbS). They are “inspired and supported by nature… and must benefit biodiversity and support the delivery of a range of ecosystem services”. But what nature should one aim for? We tested the hypothesis that local vegetation may not always be the best source
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Climate mobilities into cities: A systematic review of literature from 2011 to 2020 Urban Clim. (IF 6.663) Pub Date : 2022-08-08 Jin-ho Chung, Bhawani Buswala, Michael Keith, Tim Schwanen
The relationship of climate change with human migration and mobility has been of interest to researchers and policymakers for >25 years but the past decade has seen a marked growth of attention on climate migration into cities. This paper offers a systematic review of publications across disciplines from 2011 to 2020 on the relationship. An initial 1037 publications on climate change, migration and
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Integrated approach of ecosystem services for mine reclamation in a clustered mining semi-urban region of South India Urban Clim. (IF 6.663) Pub Date : 2022-08-04 E. Kumar, T. Subramani, D. Karunanidhi
Ecosystem service gets more attention among the environmental policy-makers in large-scale industries, especially in the mining industry. The service may direct or indirect benefit to people in various ways. The millennium ecosystem assessment typology is used to appraise the impact on ecosystems, and human well-being, and the ecosystem services are divided into four types as provisioning, regulating
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Quantitative analysis of the building-level relationship between building form and land surface temperature using airborne LiDAR and thermal infrared data Urban Clim. (IF 6.663) Pub Date : 2022-08-05 Chaomin Chen, Hasi Bagan, Takahiro Yoshida, Habura Borjigin, Jun Gao
Buildings are an important component of urban form and have complex relationships with land surface temperature (LST). However, the limited availability of high-spatial-resolution data has constrained studies of these relationships at fine scales. In this study, we used airborne LiDAR data, airborne thermal infrared images, and building vector data to quantify the relationships between seven building
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Responses of urban flood processes to local land use using a high-resolution numeric model Urban Clim. (IF 6.663) Pub Date : 2022-08-03 Xinyi Li, Jingming Hou, Zhanpeng Pan, Bingyao Li, Jing Jing, Jian Shen
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Climate partners of Helsinki: Participation-based structures and performance in a city-to-business network addressing climate change in 2011–2018 Urban Clim. (IF 6.663) Pub Date : 2022-07-30 Milja Heikkinen, Onerva Korhonen, Tuomas Ylä-Anttila, Sirkku Juhola
Private actors are important for urban climate action, because the public sector can control the carbon footprint of a city only partly. Public-private partnerships have been created through different voluntary approaches, such as city-level voluntary networks for companies with the aim to engage private actors in climate change mitigation and to support learning processes by bringing different actors
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A microclimate model for plant transpiration effects Urban Clim. (IF 6.663) Pub Date : 2022-07-29 Yang Qingjuan, Su Wanyi, Lin Ziqi
In the context of global warming, microclimate improvement is one of several important strategies for alleviating environmental problems such as urban heat islands, and plants are indispensable components of these strategies. The urban microclimate has thus become a pertinent research topic, and simulating the effects of plant transpiration in microclimate models has received increasing attention.
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Improvements, extensions, and validation of the Urban Weather Generator (UWG) for performance-oriented neighborhood planning Urban Clim. (IF 6.663) Pub Date : 2022-07-29 Genyu Xu, Jinglei Li, Yurong Shi, Xuming Feng, Yufeng Zhang
Policymakers have to assess and optimize neighborhood-scale planning aspects to profit from climate mitigation and adaptation measures due to various thermal environmental concerns. There are many models to evaluate the local thermal environment, but their outputs or complexity limit their application in performance-oriented neighborhood planning. In this study, the Urban Weather Generator (UWG) was
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Composition, seasonal variation and sources attribution of volatile organic compounds in urban air in southwestern China Urban Clim. (IF 6.663) Pub Date : 2022-07-22 Haimei Huang, Zhangwei Wang, Jia Guo, Chunjie Wang, Xiaoshan Zhang
The composition, seasonal variation and sources attribution of volatile organic compounds (VOCs) were investigated in a plateau city in China. Air samples were collected simultaneously by canister at three sites and covered four seasons. 113 VOCs species were determined by GC–MS–FID. Higher concentration of α-pinene (0.98 ± 2.25 ppb) in urban central site was observed in this study than in most others
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Hourly population exposure index for PM2.5 in urban street canyons Urban Clim. (IF 6.663) Pub Date : 2022-07-20 Baoqing Wang, Juncheng Wu, Xiaofan Xu, Yinuo Li
Vehicle emissions are among the primary sources of fine particulate matter (PM2.5). Assessing population exposure levels to PM2.5 from traffic emissions in street canyons is imperative. Accordingly, this study developed an hourly population exposure index (HPEI) by combining PM2.5 concentration distributions determined using computational fluid dynamics–based simulations, outdoor/indoor (O/I) concentration
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Explaining climate policy pathways of unlikely city pioneers: The case of the German city of Remscheid Urban Clim. (IF 6.663) Pub Date : 2022-07-20 Wolfgang Haupt, Kristine Kern
The German mid-sized city of Remscheid, located in the German state of North Rhine-Westphalia, can be characterised as an unlikely climate pioneer. Remscheid is a least likely candidate for pioneering climate policies. Previous research suggests that climate pioneers are typically characterised by a growing population, favourable economic conditions, political influence of green parties, a strong civil
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Influence of precursors and meteorology on ambient ozone over Indian western Himalayas Urban Clim. (IF 6.663) Pub Date : 2022-07-19 R. Masiwal, C. Sharma, D.K. Shukla, S.R. Radhakrishnan, K. Pandey, S.K. Uniyal, A. Ranjan
The surface ozone, oxides of nitrogen (NOx), and carbon monoxide (CO) were measured from 2015 to 2016 at a mountain site of the Indian western Himalayan region to study the temporal variability of ozone and the influence of precursor gases and meteorological parameters. Ozone showed anti-correlation with NOx and CO, indicating its photochemical origin. Significant variabilities were recorded in the
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Heavy metal pollution in groundwater of urban Delhi environs: Pollution indices and health risk assessment Urban Clim. (IF 6.663) Pub Date : 2022-07-16 Krati Sharma, N. Janardhana Raju, Neelratan Singh, S. Sreekesh
The excess presence of heavy metals in water resources deteriorates the quality and has a high potential for bioaccumulation and environmental contamination. The study of heavy metals in water is essential because of their integration in the food chain and the potential for sublethal effects on aquatic and human life. To understand the extent of heavy metal pollution, a total of 64 groundwater samples
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Size-segregated particulate matter characteristics in indoor and outdoor environments of urban traffic and residential sites Urban Clim. (IF 6.663) Pub Date : 2022-07-14 N. Manojkumar, B. Srimuruganandam
This study aims to assess the spatial and temporal variations of size-segregated particulate matter (PM) concentration in indoor and outdoor environments located in Vellore city, India. Size-segregated PM was measured using an eight-stage cascade impactor in traffic and residential sites during monsoon, winter, and summer seasons. Results showed that bimodal and trimodal distribution were common in
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Influence of global warming and urbanization on regional climate of Megacity: A case study of Chengdu, China Urban Clim. (IF 6.663) Pub Date : 2022-07-14 Jiacan Yuan, Qiyan Lin, Sisi Chen, Huan Zhao, Xin Xie, Ziyi Cai, Jintao Zhang, Tiantao Cheng, Ming Hua, Renhe Zhang
Regional climate changes have adverse socioeconomic impacts, especially in a megacity. As a case study, we investigate the regional climate changes of Chengdu, the most densely populated cities in western China. In the past 40 years, Chengdu underwent warming and less humid trends over the entire region. Consistently, the number of annual fog days decreased by −20.5 days/10 years on average, and the
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An expert assessment on playspace designs and thermal environments in a Canadian context Urban Clim. (IF 6.663) Pub Date : 2022-07-14 Daniel J. Vecellio, Jennifer K. Vanos, Eric Kennedy, Heather Olsen, Gregory R.A. Richardson
Playgrounds are a hub for child play and concerns that may impact children's play there may hinder their health and well-being. Extreme temperatures can increase risks in children of sunstroke, burns from playground surfaces, and exposure to ultraviolet radiation. Despite health risks from extreme heat to children, existing playground design standards around the world, including in Canada, make little-to-no
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The influence of roadside green belts and street canyon aspect ratios on air pollution dispersion and personal exposure Urban Clim. (IF 6.663) Pub Date : 2022-07-14 Xiaoxuan Zhu, Xueyan Wang, Li Lei, Yuting Zhao
Vehicle exhaust emissions are major sources of air pollution in urban areas. This study investigates the influence of roadside green belts, spatial urban street layout, and wind speed on the dispersion of vehicle exhaust emissions in street canyons using numerical simulations. Personal daily mean pollutant intake was calculated to assess the extent of exhaust exposure in street canyons. Results showed
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Scenario prediction and critical factors of CO2 emissions in the Pearl River Delta: A regional imbalanced development perspective Urban Clim. (IF 6.663) Pub Date : 2022-07-14 Xinyu Zhou, Libiao Bai, Jieyu Bai, Yuanyuan Tian, Wuqiang Li
The Pearl River Delta urban agglomeration (PRD) is the main body responsible for achieving carbon neutrality in China. However, high carbon dioxide (CO2) emissions are significantly affected by internal development disparities, hindering the realization of low carbon. Accordingly, considering the imbalanced development, the PRD is divided into four types: Guangzhou, Shenzhen, active development cities
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Strengthened tropical cyclones and higher flood risk under compound effect of climate change and urbanization across China's Greater Bay Area Urban Clim. (IF 6.663) Pub Date : 2022-07-14 Zifeng Deng, Zhaoli Wang, Xushu Wu, Chengguang Lai, Zhaoyang Zeng
Climate change and urbanization will further exacerbate tropical cyclones (TCs) causing severer flooding especially in coastal urbanized areas. In this study, the compound effects of climate change and urbanization on organized TC and its flood risk across the Guangdong-Hong Kong-Macau Greater Bay Area (GBA) were explored and future projections of 10 models in different Shared Socioeconomic Pathways
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The concentration of BTEX in selected urban areas of Malaysia during the COVID-19 pandemic lockdown Urban Clim. (IF 6.663) Pub Date : 2022-07-13 Nor Syamimi Sufiera Limi Hawari, Mohd Talib Latif, Haris Hafizal Abd Hamid, Teoh Hwai Leng, Murnira Othman, Anis Asma Ahmad Mohtar, Azliyana Azhari, Doreena Dominick
Volatile organic compounds (VOCs) such as benzene, toluene, ethylbenzene and xylene (BTEX) are air pollutants that harm human health. This study aims to identify BTEX concentrations before the lockdown known as the Movement Control Order was imposed (BMCO), during the implementation of the Movement Control Order (MCO), and then during the Conditional Movement Control Order (CMCO). These orders were
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Urbanization-induced drought modification: Example over the Yangtze River Basin, China Urban Clim. (IF 6.663) Pub Date : 2022-07-12 Shuzhe Huang, Xiang Zhang, Long Yang, Nengcheng Chen, Won-Ho Nam, Dev Niyogi
The 21st century witnessed unprecedented development in Chinese cities and rapid urbanization has exerted substantial effects on regional environmental and climate change. While increased precipitation and temperature extremes have been widely observed under urbanization, whether increasing urbanization enhances or mitigates drought evolution is still unknown. By applying a series of trend analysis
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Exploring socio-environmental effects on community health in Edmonton, Canada to understand older adult and immigrant risk in a changing climate Urban Clim. (IF 6.663) Pub Date : 2022-07-12 McKenzie H. Tilstra, Charlene C. Nielsen, Ishwar Tiwari, C. Allyson Jones, Alvaro Osornio Vargas, Bernadette Quemerais, Okan Bulut, Jordana Salma, Shelby S. Yamamoto
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Integrated community-based approaches to urban pluvial flooding research, trends and future directions: A review Urban Clim. (IF 6.663) Pub Date : 2022-07-13 Koorosh Azizi, Stephen Kofi Diko, Laura Saija, Mohammad Ghadir Zamani, Claudio I. Meier
Urban pluvial flooding (UPF) resulting from localized, intense, rainfall-generated ponding and overland flow causes a range of socio-environmental impacts. UPF is driven by a complex set of interconnected factors, including physical, historical, social, cultural, institutional, and economic conditions. Its impacts are increasing due to both biophysical change (e.g., global warming) and the interactions
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Implications of the Urban Heat Island on the selection of optimal retrofitting strategies: A case study in a Mediterranean climate Urban Clim. (IF 6.663) Pub Date : 2022-07-08 Laura Romero Rodríguez, José Sánchez Ramos, María del Carmen Guerrero Delgado, Servando Álvarez Domínguez
The Urban Heat Island (UHI) is a significant phenomenon that currently receives much attention from the scientific community due to its importance on the environment, and it is mostly regarded as a merely negative event. However, there is a clear knowledge gap to investigate its influence when choosing optimal retrofitting interventions in buildings. A replicable methodology is thus needed, also to
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Study of climate change impacts on the lifespan of a bin weather data set in Senai, Malaysia Urban Clim. (IF 6.663) Pub Date : 2022-07-08 C.M. Wong, Y.H. Yau, H.C. Ong, W.M. Chin
The present study presents the climate change impacts on bin weather data and bin method for the city of Senai, Malaysia. Seventeen case simulations were conducted to analyse its impacts on the results of the HVAC energy analysis and determine the suggested lifespan for the bin weather data of Senai. The graph of the mean temperatures has shown a significant increasing trend signalling the occurrence
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Distinctive roles of two- and three-dimensional urban structures in surface urban heat islands over the conterminous United States Urban Clim. (IF 6.663) Pub Date : 2022-07-09 Shisong Cao, Qihao Weng, Linlin Lu
In this study, we investigated how seasonal and diurnal surface urban heat islands (SUHIs) vary with two- and three-dimensional (2D and 3D) urban structure parameters (USPs) and climate settings. Additionally, whether and how 2D and 3D USPs influenced the seasonal hysteresis between SUHIs and background temperatures were explored using remote sensing for 203 cities over the conterminous US. Results
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Resilience of Polish cities and their rainwater management policies Urban Clim. (IF 6.663) Pub Date : 2022-07-09 Agniecszka Szpak, Joanna Modrzyńska, Joanna Piechowiak
Taking into account the literature at the intersection of climate change studies and urban studies, the authors examine and compare rainwater management policies in selected Polish cities. There is a special emphasis on urban resilience in order to define their role in ensuring safe living conditions for their residents, including processes of adapting to climate change. The aim is to show how rainwater
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H2020 projects and EU research needs for nature-based adaptation solutions Urban Clim. (IF 6.663) Pub Date : 2022-07-09 Mario J. Al Sayah, Pierre-Antoine Versini, Daniel Schertzer
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The location routing problem for cooling shelters during heat waves Urban Clim. (IF 6.663) Pub Date : 2022-07-06 Seokho Yoon, Seungok Woo, Jaesung Kim, Seong Wook Hwang, Sang Jin Kweon
Given the increasing frequency, duration, and intensity of heat waves around the globe, more research is needed on the allocation and operations of cooling shelters for efficient heat mitigation. To address this need, this study considers a cooling shelter operating system that uses shuttle buses to transport heat-vulnerable people and presents a binary integer programming model for the multi-depot
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Does polycentric development produce less transportation carbon emissions? Evidence from urban form identified by night-time lights across US metropolitan areas Urban Clim. (IF 6.663) Pub Date : 2022-07-02 Meen Chel Jung, Mingyu Kang, Sunghwan Kim
Identifying the comprehensive metropolitan urban form is important to propose effective policies to mitigate transportation carbon emissions. A publicly accessible night-time light dataset was used to identify urban centers and develop two polycentric indices to compute the composition and configuration of urban form, respectively. We used the most populous 103 U.S. metropolitan statistical areas (MSAs)
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Subsurface heat island across the Chicago Loop district: Analysis of localized drivers Urban Clim. (IF 6.663) Pub Date : 2022-07-01 Alessandro F. Rotta Loria, Anjali Thota, Ann Mariam Thomas, Nathan Friedle, Justin M. Lautenberg, Emily C. Song
The subsurface beneath urban areas worldwide is warming up, leading to so-called subsurface urban heat islands. Despite many investigations, limited knowledge is available on the sources (e.g., localized drivers) of subsurface urban heat islands. This paper presents an unprecedented Internet of Things facility to unravel key features characterizing localized drivers of subsurface urban heath islands:
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Understanding the institutional work of boundary objects in climate-proofing cities: The case of Amsterdam Rainproof Urban Clim. (IF 6.663) Pub Date : 2022-06-30 Jannes J. Willems, Mendel Giezen
Creating climate-proof cities typically comes with institutional barriers between public and private parties. Therefore, local governments are increasingly establishing local climate adaptation networks through which collective knowledge and action can be developed. We aim to understand how these networks can initiate institutional change that enables a climate-proof city. To this end, we theorize
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Changes in the carbon mitigation responsibility of Japan's capital city, Tokyo – analysis of power supply shocks due to nuclear power plant accidents Urban Clim. (IF 6.663) Pub Date : 2022-06-28 Kae Murakami, Shinji Kaneko, Masaru Ichihashi, Ayyoob Sharifi
Tokyo is the capital of Japan and the hub of the country's economic and administrative activities. To maintain the momentum of sustained economic growth, Tokyo is transforming the structure of its economic activities, production efficiency, and consumption patterns. Consequently, the supply and demand structure of energy and material in the city has been changing over time with a dramatic increase
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Source-specific health risks induced by PM2.5-bound metallic species under different pollution scenarios in a cold megacity of Northeast China Urban Clim. (IF 6.663) Pub Date : 2022-06-28 Xiazhong Sun, Kun Wang, Lixin Ma, Bo Tang, Shaojing Sun, Fan Meng, Panjing Jiang, Hong Qi
As minor fractions of PM2.5, metallic species are particularly associated with health risks. Furthermore, the health risks and health risk-involved source contributions induced by them might be discrepant under different pollution scenarios. To this end, this study first sampled fine particulate matter (PM2.5) in the Harbin city, China from May 2017 to April 2018, then compared the concentrations of
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Determinants of household flood resilience strategies in Kaduna Metropolis, Nigeria Urban Clim. (IF 6.663) Pub Date : 2022-06-23 Olasunkanmi Habeeb Okunola, Peter Olabiyi Olawuni
Recent increase in flood disaster is challenging the resilience of societies in many countries of the world. The realisation of these consequences has heightened scholarly inquiry into the method and strategies of flood resilience in cities of global south and north. This study therefore examines determinants of household resilience to floods in Kaduna metropolis, Nigeria. To achieve this, the study
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Evaluating the effects of different mitigation strategies on the warm thermal environment of an urban square in Athens, Greece Urban Clim. (IF 6.663) Pub Date : 2022-06-24 A. Tseliou, I. Koletsis, K. Pantavou, E. Thoma, S. Lykoudis, I.X. Tsiros
The present study examines the effect of different mitigation strategies on the microclimate and thermal sensation in an urban open area in Athens. The microclimatic model ENVI-met was applied to simulate thermal conditions for a warm summer day (15.07.2010). Thermal conditions were assessed based on air temperature and the Mediterranean thermal sensation scales of the Physiologically Equivalent Temperature
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Lisbon urban heat island in future urban and climate scenarios Urban Clim. (IF 6.663) Pub Date : 2022-06-24 Rui Silva, Ana Cristina Carvalho, Susana Cardoso Pereira, David Carvalho, Alfredo Rocha
Urban heat Islands (UHIs) may constitute a hazard for urban populations, particularly under extreme events such as heatwaves. Lisbon is a medium-size city regularly affected by heatwaves with maximum temperatures >35 °C and is expected to grow and densify during this century. This study evaluates the UHI in the Municipality of Lisbon (ML) for the heatwave with the highest maximum average temperature
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Urban dynamics and potential vulnerability of coastal urban areas to sea level rise in the southeastern Levantine Basin Urban Clim. (IF 6.663) Pub Date : 2022-06-18 Mohamed A. Abdrabo, Rofida G. Abdelwahab, Mahmoud A. Hassaan
Vulnerability of coastal areas to climate change impacts such as Sea Level Rise (SLR) is largely determined by exposure to coastal hazards and prevailing urban patterns, as different patterns imply varied sensitivity and vulnerability levels. The potential vulnerability of the Nile Delta to SLR impacts is expected to be influenced by projected coastal urban dynamics, which means varied exposure in
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A mechanistic assessment of urban heat island intensities and drivers across climates Urban Clim. (IF 6.663) Pub Date : 2022-06-18 Ziyan Zhang, Athanasios Paschalis, Ana Mijic, Naika Meili, Gabriele Manoli, Maarten van Reeuwijk, Simone Fatichi
The urban heat island effect (UHI) has been widely observed globally, causing climate, health, and energy impacts in cities. The UHI intensities have been found to largely depend on background climate and the properties of the urban fabric. Yet, a complete mechanistic understanding of how UHIs develop at a global scale is still missing. Using an urban ecohydrological and land-surface model (urban Tethys-Chloris)
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Modelling land surface temperature in urban areas using spatial regression models Urban Clim. (IF 6.663) Pub Date : 2022-06-19 Abdur-Rahman Belel Ismaila, Ibrahim Muhammed, Bashir Adamu
This study is aimed at modelling land surface temperature (LST) using the spatial lag model (SLM) and spatial error model (SEM). Landsat-8 OLI/TIRS data and digital elevation model were used to generate the dependent and explanatory variables. First, correlation between the variables and LST, and presence of spatial autocorrelation were assessed. Second, the modelled LST was validated. The findings
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Changes in the new particle formation and shrinkage events of the atmospheric ions during the COVID-19 lockdown Urban Clim. (IF 6.663) Pub Date : 2022-06-13 A.K. Kamra, Jeni N. Victor, Devendraa Siingh, Amartya Singh, T. Dharmaraj
Impacts of environmental changes at Pune, India during the lockdown period imposed due to the Covid-19 pandemic, on the characteristics of the atmospheric ions and the new particle formation (i.e. the formation of molecular clusters and their subsequent growth to larger sizes) and shrinkage events have been investigated. The increase in the small and big cluster ion concentrations and the decrease
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Estimating urban PM2.5 concentration: An analysis on the nonlinear effects of explanatory variables based on gradient boosted regression tree Urban Clim. (IF 6.663) Pub Date : 2022-06-14 Xiatong Hao, Xiaojian Hu, Tong Liu, Chunwen Wang, Liang Wang
It is important for air pollution study and control to understand the relationships between the concentrations of fine particulate matter and the influencing factors. This study builds a PM2.5 concentration estimation model with high accuracy considering major factors including meteorological conditions, traffic conditions, and urban spatial layouts based on Gradient Boosted Regression Tree approach
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Estimation of particulate matter pollution using WRF-Chem during dust storm event over India Urban Clim. (IF 6.663) Pub Date : 2022-06-13 Manish Soni, Sunita Verma, Manoj K. Mishra, R.K. Mall, Swagata Payra
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Why has the trend in humidity variation in Shenzhen changed from decrease to increase while urbanisation has continued? Urban Clim. (IF 6.663) Pub Date : 2022-06-13 Li Zhang, Yujiao Deng, Lei Li, Pak-wai Chan, Hongyan Luo, Qiufang Yin, Fangyuan Xu, Kaiyi Wu, Honglong Yang
This study analysed the variations of relative humidity (RH) over the past 60 years in Shenzhen—an emerging megacity located in the Pearl River Delta region of China. The analysis revealed three stages of mean annual RH in Shenzhen since 1961: (1) a stable period with little change from 1961 to 1980; (2) a fluctuating downward trend from 1981 to 2008, with a linear transformation of −2.5%/decade, explained
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Characterizing the thermal effects of vegetation on urban surface temperature Urban Clim. (IF 6.663) Pub Date : 2022-06-11 Jinxin Yang, Qian Shi, Massimo Menenti, Yanhua Xie, Zhifeng Wu, Yong Xu, Sawaid Abbas
Vegetation is important for urban heat mitigation. The cooling intensity of vegetation is affected by background climate and urban design. How to evaluate vegetation cooling efficiency under different climate conditions is still an issue open to discussion. In this study, a normalized indicator of urban vegetation cooling efficiency (NVCE) is proposed as a metric of urban vegetation cooling efficiency
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Calibration of the Physiological Equivalent Temperature (PET) index range for outside spaces in a tropical climate city Urban Clim. (IF 6.663) Pub Date : 2022-06-11 Karyn Ferreira Antunes Ribeiro, Ana Clara Alves Justi, Jonathan Willian Zangeski Novais, Flávia Maria de Moura Santos, Marta Cristina de Jesus Albuquerque Nogueira, Soneize AuxiliadoraDe Miranda, João Basso Marques
This study aimed to calibrate the physiological equivalent temperature (PET) index range for Cuiabá-MT, a city with a tropical climate, for which PET calibration was not previously conducted. The air temperature, relative humidity, globe temperature, wind speed, and direction were measured in three scenarios: arboreal shading (S1), artificial shading with parasol (S2), and sun exposure (S3). Questionnaires
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Mitigating urban heat with optimal distribution of vegetation and buildings Urban Clim. (IF 6.663) Pub Date : 2022-06-10 Matthias Tuczek, Kenan Degirmenci, Kevin C. Desouza, Richard T. Watson, Tan Yigitcanlar, Michael H. Breitner
The impact of climate change on cities poses a growing global threat, which is exacerbated by the urban heat island (UHI) effect. The optimal distribution of vegetation and buildings in urban areas is critical to control the UHI effect and stabilize long-term temperature changes. In this article, we develop an optimization model to maximize revenue while limiting UHI intensity under several restrictions
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Temporal changes of heat-attributable mortality in Prague, Czech Republic, over 1982–2019 Urban Clim. (IF 6.663) Pub Date : 2022-06-09 Aleš Urban, Osvaldo Fonseca-Rodríguez, Claudia Di Napoli, Eva Plavcová
While previous research on historical changes in heat-related mortality observed decreasing trends over the recent decades, future projections suggest increasing impact of heat on mortality in most regions of the world. This study aimed to analyse temporal changes in temperature-mortality relationships in Prague, Czech Republic in the warm season (May–September), using a daily mortality time series
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Characterization of the UHI in Zaragoza (Spain) using a quality-controlled hourly sensor-based urban climate network Urban Clim. (IF 6.663) Pub Date : 2022-06-09 Samuel Barrao, Roberto Serrano-Notivoli, José M. Cuadrat, Ernesto Tejedor, Miguel A. Saz Sánchez
The study of the urban heat island (UHI) is of great importance in the context of climate change, where increasingly frequent and intense extreme thermal events will generate lethal effects in cities. In this work, we characterize the UHI of the urban area of Zaragoza (Spain) using a thermohygrometric network of hourly observatories composed of 21 sensors, from March 2015 to February 2021. Due to the
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Enhanced human heat exposure in summer in a Central European courtyard subsequently roofed with transparent ETFE foil cushions Urban Clim. (IF 6.663) Pub Date : 2022-06-09 Hyunjung Lee, Annika Oertel, Helmut Mayer
Due to their properties and dimensions, courtyards regulate their microclimate, which, above all, mitigates extreme situations and reduces energy consumption. Mainly for increased energy saving, existing courtyards in temperate climates are often subsequently roofed transparently, converting them into atria. Due to various advantages roofs made of ethylene-tetrafluoroethylene (ETFE) foil cushions have
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ArcUHI: A GIS add-in for automated modelling of the Urban Heat Island effect through machine learning Urban Clim. (IF 6.663) Pub Date : 2022-06-08 Daniel Jato-Espino, Cristina Manchado, Alejandro Roldán-Valcarce, Vanessa Moscardó
Increased urbanisation is boosting the intensity and frequency of the Urban Heat Island (UHI) effect in highly developed cities. The advances in satellite measurement are facilitating the analysis of this phenomenon using Land Surface Temperature (LST) as an indicator of the Surface UHI (SUHI). Due to the spatial implications of using remote sensing data, this research developed ArcUHI, a Geographic
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Extreme temperatures and respiratory mortality in the capital cities at high latitudes in Northeast China Urban Clim. (IF 6.663) Pub Date : 2022-06-07 Yuxia Ma, Yifan Zhang, Haoran Jiao, Bowen Cheng, Heping Li, Xingqin An, Jiahui Shen, Hang Wang
With the rapid increase in global warming, the impact of extreme temperatures on morbidity and mortality related to respiratory diseases has attracted considerable attention. In the current study, we quantified the relative risks (RRs) of mortality for respiratory diseases in three capital cities in Northeast China. We used a distributed lag nonlinear model (DLNM) based on a generalized additive model
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Understanding the physiological and biophysical response of urban roadside plantations for assessing adaptation and mitigation mechanisms toward vehicular emissions Urban Clim. (IF 6.663) Pub Date : 2022-06-07 Hukum Singh, Shabnam Bandyopadhyay, Amit Kumar, Manish Singh, Apurva Malik, Garima Kumari, Asha Raturi, Santosh Kumar Yadav, Manoj Kumar, Santan Barthwal, Ajay Thakur, Praveen Singh Rawat
The plants follow various strategies for adapting and mitigating climatic and environmental stresses. This offers an opportunity to comprehend adaptation and mitigation mechanisms under changing climate and environment emerging from vehicular emissions. We deployed an approach, i.e., physiological (Phy) and biophysical (Bioph) functional traits (FTs) based approach to understand plant response for
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Impact of wind speed on urban heat and pollution islands Urban Clim. (IF 6.663) Pub Date : 2022-06-06 Yasser Abbassi, Hossein Ahmadikia, Ehsan Baniasadi
Large urban areas are typically subjected to excessive levels of heat and pollution. The formation of an urban-scale plume would arise from releasing heat in a stable atmosphere. The presence of wind may disrupt the pattern of the plume. This study explores the effect of wind intensity and ambient stability on the plume structure and pollution dispersion numerically. A metropolitan has been selected
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Environmental risk assessment of floating gardens in Inle Lake, Myanmar Urban Clim. (IF 6.663) Pub Date : 2022-06-07 Chuleemas Boonthai Iwai, Theingi Khaung, Jarupong Prasopsuk, Balasubramani Ravindran
Inle Lake is a valuable wetland for local ecosystems and one of Myanmar's freshwater biodiversity hotspot. In this lake, poor management of floating gardens cultivation by some farmers has resulted in leaching of excess nutrients, and then water and sediment were contaminated by chemical residues. This study aims to assess the environmental risk to Lake Ecosystem by investigating the nutrient contamination
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Scenario analysis of strategies to control air pollution Urban Clim. (IF 6.663) Pub Date : 2022-06-02 Hélder Relvas, Diogo Lopes, Joana Ferreira, Afonso Silva, Sandra Rafael, Myriam Lopes, Susana Marta Almeida, Vânia Martins, Evangelia Diapouli, Antti Korhonen, Otto Hänninen, Mihalis Lazaridis, Ana Isabel Miranda
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PM2.5 exposure differences between children and adults Urban Clim. (IF 6.663) Pub Date : 2022-06-04 Lorenz Harr, Tim Sinsel, Helge Simon, Oliver Konter, Damian Dreiseitl, Philipp Schulz, Jan Esper
Heights of children and adults vary substantially and may cause different exposure to PM2.5 particles. We measured pedestrian PM2.5 exposure by foot following a 5.5 km route along kindergartens and schools in Mainz (Germany). Measurements were conducted in November 2019 on eight consecutive days at two heights, the potential breathing heights of adults in 1.6 and children in 1.0 m using Alphasense