Shared insights for heat health risk adaptation in metropolitan areas of developing countries

iScience, Journal Year: 2024, Volume and Issue: 27(5), P. 109728 - 109728

Published: April 12, 2024

Global warming has led to a surge in heat health risks (HHRs), the impacts of which are particularly pronounced metropolitan areas developing countries. In current study, six - Beijing, China; Cairo, Egypt; Jakarta, Indonesia; Mumbai, India; Rio de Janeiro, Brazil; and Tehran, Iran were selected as study area further differentiate built-up landscapes by utilizing concept local climate zones. Moreover, we assessed similarities differences HHR associated with landscape. Results revealed 30.67% higher compact than open type. Urban green spaces played an effective but differentiated role mitigating HHR. That is, low vegetation urbanized trees suburban significantly mitigated Collectively, our findings emphasize planning management addressing provide empirical support for implementing mitigation adaptation strategies.

Language: Английский

---

Spatiotemporal Footprints of Surface Urban Heat Islands in the Urban Agglomeration of Yangtze River Delta During 2000–2022

Remote Sensing, Journal Year: 2025, Volume and Issue: 17(5), P. 892 - 892

Published: March 3, 2025

Compared with atmospheric urban heat islands, surface islands (SUHIs) are easily monitored by the thermal sensors on satellites and have a more stable spatial pattern resembling built-up lands across single cities, large metropolitans, agglomerations; hence, they gaining attention from scholars planners worldwide in search for reasonable patterns scales to guide future development. Traditional urban–rural dichotomies, being sensitive representative rural areas diurnal seasonal variations land temperature (LST), obtain inflated varying SUHI footprints of approximately 1.0–6.5 times size different satellite-retrieved LST datasets many cities metropolitan areas, which not conducive developing strategies mitigate SUHIs. Taking Yangtze River Delta agglomeration China as an example, we proposed improved structural similarity index quantify SUHIs multiple at annual interval. We identified gridded anomalies (LSTAs) related urbanization adopting random forest models climate, urbanization, geographical, biophysical, topographical parameters. Using LSTA cycle grid point relative reference terms average values, variances, shapes characterize SUHIs, cross-validated ~1.06–2.45 × 104 km2 smaller than clear transition zones between zone were obtained 2000–2022. Hence, can balance urbanization’s benefits adverse effects enhancing design. Considering that rapidly transformed into ratio extent increasing 0.43 0.62 during 2000–2022, should also take measures prevent rapid expansion high-density ISA density above 65%

Language: Английский

---

Comprehensive Evidence That Detecting Urban Signals in Large‐Scale Warming Is Highly Uncertain

Geophysical Research Letters, Journal Year: 2025, Volume and Issue: 52(5)

Published: March 7, 2025

Abstract Increasing urbanization causes urban heat island effects that might introduce significant biases into global warming estimates. Previous studies of signals and asymmetries remain a subject debate. Here we comprehensively assess urban‐induced warmings by investigating meteorological temperatures on 2,370 stations in China during 1980–2022. There are noticeable annual contributions ranging from 0.016 to 0.251°C decade −1 0.3%–72.4%, primarily due spatiotemporal heterogeneities the criteria defining sites. Rapid tends exacerbate diurnal seasonal asymmetries, resulting shrinking temperature differentials associated with urbanized areas chronosequences. This study underscores specific definition matters for magnitude complex nonlinear imprint asymmetries.

Language: Английский

---

A review of research methods for accounting urban green space carbon sinks and exploration of new approaches

Frontiers in Environmental Science, Journal Year: 2024, Volume and Issue: 12

Published: Feb. 27, 2024

Along with urbanization and industrialization, carbon emissions have been increasing significantly, resulting in global warming. Green space has widely accepted as a natural element cities to directly increase sinks indirectly reduce emissions. The quantification of benefits generated by green is an important topic. This paper aims provide comprehensive review the methods for measuring spaces. results indicate that existing assessment can accurately estimate spaces at large scales. However, are not fully applicable studies urban spaces, due low precision research results. assimilation method most suitable study sequestration efficiency plants project scales through macroscopic means. Even though, experiments unstable under different weather conditions. To address challenges, this proposes photosynthetic rate estimation based on light-response curve which efficient describe relationship between light intensity net studying plant physiological characteristics. newly proposed method, integrating photosynthesis-light response curves associated meteorological data, advantages short measurement time ensuring standardized experimental environment result comparability. Overall, combine meteorology physiology propose optimizing sink more convenient application its simple process In practice, provides guidance low-carbon planning design, helps promote energy conservation emission reduction nature-based solutions.

Language: Английский

---

Understanding spatiotemporal variation of heatwave projections across US cities

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 27, 2025

Abstract Heatwaves are one of the deadliest meteorological hazards, posing a substantial risk to human health, environment, and economy. The frequency intensity heatwaves have substantially escalated throughout United States (US), as evidenced by noticeable contrast between average occurrence two per year during 1960s surge six 2010s. primary objective this study is assess impacts past heatwave events in major US cities, project future scenarios, analyze relationship their associated health environmental consequences. First, we investigate spatio-temporal variations intensity, frequency, duration heatwaves, along with anticipated changes under various shared socioeconomic pathways till end 2100. Secondly, examine adverse on well-being, considering both current demographics projections. Our results highlight significant projected increases across all regions, most dramatic escalations high-emission scenarios. By late twenty-first century, cities could experience up 2–4 times days annually compared baseline period (1985–2014), night-time durations potentially covering over half some regions. Furthermore, analysis using composite indices reveals severe heat stresses, particularly southwestern like Las Vegas Yuma, southern Miami, indicating rising trend susceptibility due climatic demographic shifts. This contributes growing body research advocating proactive measures address escalating threat heatwaves. integrating climate shift, it provides nuanced assessment urban vulnerability, specific focus densely populated high-risk

Language: Английский

---

Urban Green Spaces Under Climate Warming: Controlling the Spread of Allergenic Pollution Through Residential Area Spatial Layout Optimization

Sustainability, Journal Year: 2025, Volume and Issue: 17(7), P. 3235 - 3235

Published: April 5, 2025

In response to the demands of climate change and urban sustainability, green space construction in China has rapidly expanded, while simultaneously giving rise allergenic pollen pollution. Focusing on central area Xi’an, Shaanxi Province, China, this study utilizes surveys, field measurements, particle microscopy analyze seasonal variation pollution concentrations physical dispersion characteristics particles residential areas. The also examines impact spatial layout regulating results show that (1) Xi’an’s areas exhibits significant characteristics, with spring, summer, autumn being primary seasons. highest occur dominated by tree pollen, followed summer a predominance herbaceous pollen. (2) Pollution are affected diurnal temperature variation, higher observed public spaces compared roadside spaces. (3) Allergenic shows layered characteristic vertical direction, concentrated around 13 m above ground due effects local microclimate. (4) Urban positively correlated high temperatures negatively humidity, circulations influence (5) Design indicators such as plot ratio building stagger affect findings provide scientific basis for optimizing design mitigate offer strategic guidance improving health livability environments.

Language: Английский

---

Analyzing Urban Climatic Shifts in Annaba City: Decadal Trends, Seasonal Variability and Extreme Weather Events

Atmosphere, Journal Year: 2024, Volume and Issue: 15(5), P. 529 - 529

Published: April 26, 2024

Global warming is one of the most pressing challenges our time, contributing to climate change effects and with far-reaching implications for built environments. The main aim this study assess extent which Annaba city, Algeria, as part Mediterranean region, affected by global its broader influences. investigated climatic shifts in using a multi-step methodology integrating data collection analysis techniques. Data included 23 years (2000–2023) from Annaba’s meteorological station, on-site measurements microclimatic variations, questionnaire survey. collected underwent four analyses: time series describe parameters over years, statistical predict potential future conditions (2024–2029) correlation various variables specialized bioclimate tools highlight seasonal variability, spatial urban heat island (UHI) phenomenon perceived shifts, an extreme weather events characterizing atmospheric context region. findings revealed consistent trend prolonged observed, particularly last (2020–2023). Significant temperature fluctuations were emphasized, notably July 2023, record-breaking maximum temperatures reaching 48.2 °C, hottest on record increase 3.8 presenting amplified effect, causing differentials up 6 °C within built-up areas. Projections 2029 suggest tendency towards heightened aridity significant shift new seasonality featuring two distinct seasons—moderate hot challenging. abrupt disruption calm 24 2023 highlighted influence circulation region featured both anticyclones blocking phenomena local patterns.

Language: Английский

---

Assessing the spatial-temporal impacts of underlying surfaces on 3D thermal environment: A field study based on UAV vertical measurements

Building and Environment, Journal Year: 2024, Volume and Issue: 265, P. 111985 - 111985

Published: Aug. 22, 2024

Language: Английский

---

Estimating the marginal effects of plot-scale socio-economic and spatial morphological factors on carbon emissions from non-linear perspective

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: unknown, P. 144318 - 144318

Published: Nov. 1, 2024

Language: Английский

---