Enhanced observations from an optimized soil-canopy-photosynthesis and energy flux model revealed evapotranspiration-shading cooling dynamics of urban vegetation during extreme heat

Remote Sensing of Environment, Год журнала: 2024, Номер 305, С. 114098 - 114098

Опубликована: Март 11, 2024

Язык: Английский

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Unprivileged groups are less served by green cooling services in major European urban areas

Nature Cities, Год журнала: 2024, Номер 1(6), С. 424 - 435

Опубликована: Май 22, 2024

Язык: Английский

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A systematic review of photovoltaic-green roof systems in different climatic conditions focusing on sustainable cities and societies

Sustainable Cities and Society, Год журнала: 2023, Номер 98, С. 104813 - 104813

Опубликована: Июль 20, 2023

Язык: Английский

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Mitigation potential of urban greening during heatwaves and stormwater events: a modeling study for Karlsruhe, Germany

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Фев. 13, 2025

Abstract Climate change is increasing the frequency and intensity of urban heat islands stormwater flooding. In order to mitigate these threats cities are turning toward green infrastructure restore hydrologic cycle in a way that increases ecosystem services provided by trees. Strategically designed can runoff volume rainfall interception through tree canopies redirect impervious into bioswales promote infiltration. addition, greens extreme via evapotranspiration shading. Here we applied i-Tree HydroPlus model German city Karlsruhe its twenty-seven districts with varying initial conditions cover analyze potential for both mitigation during dry wet periods throughout 5-year period. After analyzing drainage conditions, used simulate scenario each district restored hydrology at 30%. Regarding trade-offs between mitigation, results confirm soils before storm events lead greater reduction 10%, prior heatwaves resulted evaporative cooling. Compared current scenarios decreasing number hours (Heat Index > 31 °C) per year on average 64.5%, reduce 58% across all districts. Thus, our simulation show investing greener infrastructure, has positive impacts microclimate hydrology. Finally, discuss synergies investigated management options as well transferability other cities.

Язык: Английский

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City-wide, high-resolution mapping of evapotranspiration to guide climate-resilient planning

Remote Sensing of Environment, Год журнала: 2023, Номер 287, С. 113487 - 113487

Опубликована: Фев. 1, 2023

The impacts of global change, including extreme heat and water scarcity, are threatening an ever-growing urban world population. Evapotranspiration (ET) mitigates the island, reducing effect waves. It can also be used as a proxy for vegetation use, making it crucial tool to plan resilient green cities. To optimize trade-off between greening security, reliable up-to-date maps ET cities urgently needed. Despite its importance, few studies have mapped accurately entire city in high spatial temporal resolution. We Berlin, Germany (10-m) (hourly) resolution year 2019. A novel machine learning (ML) approach combining Sentinel-2 time series, open geodata, flux footprint modeling was applied. Two eddy towers with contrasting surrounding land cover provided training testing data. Flux allowed us incorporate comprehensive types ML models. Open remote sensing geodata model inputs included Normalized Difference Vegetation Index (NDVI) from Sentinel-2, building height, impervious surface fraction, height. NDVI indicate phenology health, plant transpiration contributes majority terrestrial ET. Hourly reference (RET) calculated input capture dynamics meteorological conditions. Predictions were carried out using Random Forest (RF) regression. Weighted averages extracted hourly footprints compared measured two towers. Validation showed that is mapping ET, mean R2 0.76 0.56 RMSE 0.0289 mm 0.0171 at more vegetated site city-center site, respectively. Lastly, variation Local Climate Zones (LCZs) analyzed support planning. This study demonstrated capacity map unprecedented methodology, which sustainable management infrastructure resources urbanizing facing climate change.

Язык: Английский

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Models and Methods for Quantifying the Environmental, Economic, and Social Benefits and Challenges of Green Infrastructure: A Critical Review

Sustainability, Год журнала: 2023, Номер 15(9), С. 7544 - 7544

Опубликована: Май 4, 2023

With growing urbanization and increasing climate change-related concerns, green infrastructures (GIs) are recognized as promising solutions for mitigating various challenges promoting sustainable development. Despite the important role of GIs, a comprehensive synthesis quantification their full range benefits is lacking in current literature. To address this gap, systematic literature review was conducted on quantifiable environmental, economic, social GIs. This paper followed Preferred Reporting Items Systematic Review (PRISMA) methodology, where 75 relevant articles were reviewed to present models methods that could be used quantify assess impacts different GI types. The study further investigated existing knowledge trends patterns, identified research gaps, suggested future directions. results revealed while studies offer great insights into more holistic approach necessary balance findings also offered understanding wide considerations both natural engineered Ultimately, performed serves guide researchers practitioners estimating evaluating plans programs well making informed decisions about projects.

Язык: Английский

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Influence of age, soil volume, and climate change on water availability at urban tree sites

Sustainable Cities and Society, Год журнала: 2024, Номер 113, С. 105680 - 105680

Опубликована: Июль 18, 2024

Conditions for trees are challenging in urban areas with a high degree of soil sealing combined changing climatic conditions. Stress is primary mortality factor, especially young that do not yet provide ecosystem services such as sufficient cooling. Therefore, sustainable tree planting an environment must create conditions so can grow into large and be preserved long time. We developed daily water balance model temperate climate, focusing on realistic planning scenarios five locations Germany current future climate The aim was to understand annual seasonal variation content (SWC) the drought stress intensity. modeled SWC ages 10 60, crucial parameter analyzing site conditions, quantified duration correlation extreme heat. results show age strongly impacts duration. Imperviousness root volume have higher impact intensity than change. conclude it consider space when preserve vital future.

Язык: Английский

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Are grand tree planting initiatives meeting expectations in mitigating urban overheating during heat waves?

Sustainable Cities and Society, Год журнала: 2024, Номер 113, С. 105671 - 105671

Опубликована: Июль 15, 2024

Numerous cities undertakes substantial tree planting initiatives for heatwave mitigation, driven by model predictions indicating a positive mitigation impact. However, emerging studies suggest that the transpiration behavior of trees during heatwaves significantly deviates from normal. This divergence, overlooked in current climate models, introduces possibility inaccuracies predicting cooling heatwaves. In this research, 1) The universality changed heat wave is revealed: study over 700 various species indicates at least 65 % sampled overestimated conventional waves. 2) scheme within revised to represent new pattern. Comparison shows overestimates peak hour efficiency 60 %. Consequently, effectiveness large-scale tree-planting as strategy may not meet expectations, emphasizing need refinement

Язык: Английский

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Evaluating the multi-seasonal impacts of urban blue-green space combination models on cooling and carbon-saving capacities

Building and Environment, Год журнала: 2024, Номер 266, С. 112045 - 112045

Опубликована: Сен. 3, 2024

Язык: Английский

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Water efficiency in smart cities: optimising irrigation for public green spaces

LHB, Год журнала: 2024, Номер 110(1)

Опубликована: Янв. 24, 2024

Greening initiatives are urban planning strategies that rely on the development of public green spaces supporting multiple system functions. In a global water scarcity context, however, space irrigation is key aspect. Dynamic optimisation plans one viable answer for consumption mitigation, which not widely implemented at municipal levels in EU. Yet, hydroinformatics-based mature and market-ready methods technologies can support its implementation should allow embedment within smart-city concept. Here, simple interoperable approach dynamic has been parcels French Mediterranean coastal city. The relies smart sensors, balance model, an algorithm, weather forecast data integration, all encapsulated standardised open-source FIWARE ecosystem. results plan led to 35% saving during dry season more than 60% dry–wet transition period. used standard could fit broad range digital platforms without any technical challenge.

Язык: Английский

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