🏡 Here is the data analysis for Calgary, Summer 2025. This chart shows the relationship between vegetation density (NDVI) and Land Surface Temperature (LST).

🔥 The data reveals a critical "tipping point": vegetation only starts effectively cooling the environment once it reaches a specific density threshold. Below this threshold (the left side of the curve), green spaces stay just as hot as the surrounding concrete.
Sparse or isolated trees don't act as air conditioners—they "burn" in the urban furnace right along with us.

❗ What does this mean for Calgary? Simply planting a few scattered trees isn't enough. To actually move the needle on temperature, we need dense, healthy green belts. Otherwise, it’s just a waste of water and resources.

🔗 Link to the research: https://www.datastory.org.ua/calgarys-summer-heat-a-2025-satellite-perspective/

#Calgary #UrbanHeatIsland #NDVI #ClimateChange #UrbanPlanning #DataScience #Environment #YYC #BigData #ScienceMatters #GreennessOfCalgary #ClimateOfCalgary #rstats #RemoteSensing #OpenScience

To distinguish between "normal" and anomalous surface temperatures in Calgary in 2025, I applied Tukey’s method. The statistical distribution shows a negative skewness (coefficient ≈−0.59).

This highlights a critical phenomenon: the vast majority of the urban area is densely clustered in the warmer temperature range. In contrast, cool refuges (the rivers, reservoir, and dense parks) are statistically scarce, forming a long "tail" on the left side of the plot. In essence, Calgary’s baseline is shifted toward higher temperatures, making Urban Cool Islands a rare and vital resource.

I would like to remind my readers and followers that I am currently preparing a comprehensive article based on these research results. In it, I will explore the ecological and geochemical implications of this thermal distribution. Stay tuned for further updates!

#YYC #Calgary #ClimateResilience #UrbanHeatIsland #DataAnalytics #RemoteSensing #Landsat #OpenData #CitizenScience #LST #ClimateOfCalgary #Landsat #Rstats

One more quick byproduct of my MDEM development: a bivariate map integrating volumetric structural data (SAR) with surface temperature (LST). This approach identifies the exceptionally intensive dissipative role of volumetric vegetation structure (trees and tall shrubs). By accounting for these high-performance cooling elements, we can better understand how they supplement traditional landscaping to enhance the city's overall thermal resilience.

#UrbanHeatIsland #EnvironmentalScience #DataScience #Calgary #YYC #Sustainability #RemoteSensing #GIS #MDEM #GreennessOfCalgary #CalgaryMDEM #RStats #UrbanPlanning #EarthObservation #OpenScience #SpatialDataScience #SpatialData

Just a byproduct of my current research... 😉
Investigating the environmental patterns of Calgary. Sometimes the most telling insights emerge while working on something even bigger.

UPD: The total raw dataset consists of 242,376,352 individual pixels!

#UrbanHeatIsland #EnvironmentalScience #DataScience #Calgary #Sustainability #RemoteSensing #GIS #MDEM #GreennessOfCalgary #CalgaryMDEM #RStats

Saturday Data Dive: Mapping Calgary’s Thermal Fingerprint 🛰️📊

Spent some quality time with GEE, R and Landsat-8/9 data today.

I’ve just finished processing a Median Land Surface Temperature (LST) model for Calgary, covering the entire Summer of 2025. This isn't just a single-day snapshot—it’s a robust composite of many satellite scenes, filtered to show the true intra-urban thermal zones.

Quick Takeaways:
🔹 Surface temperature in some busines area and "heat traps" peaked at over 51.3°C.
🔹 The contrast between our "Cool Islands" and "Extreme Heat Zones" is striking.
🔹 This automated workflow in R allows for a granular look at urban climate resilience that standard reports often miss.

I’m currently finalizing a full breakdown and a community-by-community analysis.
Stay tuned—the detailed article is coming soon!

#Calgary #DataScience #UrbanHeatIsland #RemoteSensing #ClimateResilience #Landsat #RStats #GIS #Sustainability #GEE #EnvironmentalData #Summer2025 #YYC #GreennessOfCalgary #Alberta #Canada

The UK government’s proposed 3p-a-mile electric vehicle tax lays bare its true nature: it is a Treasury revenue-raising exercise masquerading as environmental policy. Far from a green initiative, this mileage-based levy exposes a systemic geographic and political disparity that disproportionately punishes rural Scotland and Wales to the benefit of London and the South East.

​Consider the stark regional financial disparities. Under this proposal, drivers in densely populated, heavily polluted urban centres with extensive public transport networks, such as London, will pay an average of just £33 a year. Conversely, drivers in rural Scotland and Wales—who rely entirely on their vehicles for essential travel across vast geographies—face averages of over £156 a year, with a standard 8,500-mile driver paying upwards of £255.
​What this mileage-based tax completely ignores is the environmental heavy lifting performed by these rural landscapes. The extensive forests, mountains, and peatlands of Scotland and Wales act as vital carbon sinks for the entire UK. UK woodlands currently hold roughly 150 million tonnes of carbon in their biomass and sequester millions more annually. Furthermore, through the process of evapotranspiration, these vast green spaces act as natural air conditioning, significantly cooling the wider UK climate and regulating regional temperatures.

​To understand the inherent value of these rural spaces, one only has to look at the continent. European cities are currently investing millions in urban tree-planting initiatives, desperately trying to mitigate the 'Urban Heat Island' effect that traps emissions and drives up deadly urban temperatures. The irony here is profound: a tax purportedly born of environmental concern now financially penalises rural drivers who live amongst and navigate natural carbon sinks, whilst effectively offering a massive discount to drivers contributing to the very urban heat islands that the rest of Europe is spending fortunes to cool.

​However, the inequity extends far beyond the roads and into the very power grid that charges these vehicles. Both Scotland and Wales are significant net exporters of electricity. Through vast wind, hydro, and renewable energy infrastructure, they generate considerably more power than they consume, exporting the surplus directly to England to meet the massive energy demands of cities like London. Despite powering the UK, neither Scottish nor Welsh consumers receive a discount on their electricity bills. In fact, due to the structure of the national grid, rural consumers frequently pay higher standing charges for their electricity than the consumers in the urban areas that absorb their exported energy.

​This presents a stark picture of two UK nations being disproportionately squeezed. They generate the clean electricity and their landscapes absorb the carbon, yet their residents are forced to pay the highest transport taxes and energy premiums simply because of their geography.

​The ultimate pay-off of this policy failure is highly political. For decades, a prevailing Westminster narrative has accused Scotland and Wales of being heavily subsidised by England. Yet, when one examines the actual flow of resources—clean energy flowing south, whilst punitive mileage taxes and high energy standing charges flow north and west—the narrative is exposed as nonsense. Policies like the 3p-a-mile EV tax serve as undeniable fuel for Scottish and Welsh independence movements, providing empirical evidence of an economic union that extracts resources from the rural periphery merely to subsidise the urban core.

#UKPolitics #ElectricVehicles #Taxation #NetZero #ClimateChange #ScottishIndependence #YesCymru #CarbonSink #EnergyPolicy #UrbanHeatIsland

🏙️ The Hellish Trade Zones
(Ukrainian: “Торговельні пекельні зони”)

An older piece from 2017 — but still relevant today.
Using Landsat-8 thermal imagery, I explored how urban heat islands form in large commercial and industrial areas completely devoid of vegetation.

These “hellish trade zones” show surface temperatures exceeding 45–50 °C, while nearby shelterbelts and green spaces remain much cooler.
The visual storytelling approach — combining satellite data, maps, and simple explanations — helped raise public awareness about urban greening and environmental health in my city.

📍 Location: Kryvyi Rih, Ukraine
🛰️ Data: Landsat-8 (July 15, 2016), thermal band 10 + NDVI
🔗 More: https://www.datastory.org.ua/%d1%82%d0%be%d1%80%d0%b3%d0%be%d0%b2%d0%b5%d0%bb%d1%8c%d0%bd%d1%96-%d0%bf%d0%b5%d0%ba%d0%b5%d0%bb%d1%8c%d0%bd%d1%96-%d0%b7%d0%be%d0%bd%d0%b8/

#UrbanHeatIsland #RemoteSensing #Landsat #UrbanEcology #ClimateChange #EnvironmentalData #UrbanGreening #Geospatial #GIScience #OpenScience #DataVisualization #Ukraine #Sustainability #KryvyiRih #UrbanHealth

Lắp điện mặt trời mái nhà có làm thành phố nóng lên hay mát đi?

Một nghiên cứu mới tại thành phố Lyon (Pháp) đã hé lộ những phát hiện bất ngờ về tác động của các tấm pin quang điện (PV) đến nhiệt độ khu vực đô thị.

#ĐiệnMặtTrờiMáiNhà #NăngLượngTáiTạo #BiếnĐổiKhíHậu #ĐôThị #SolarEnergy #RooftopSolar #UrbanHeatIsland #ClimateChange #Science

https://vietnamnet.vn/dien-mat-troi-mai-nha-tac-dong-the-nao-den-nhiet-do-do-thi-2449868.html

Điện mặt trời mái nhà tác động thế nào đến nhiệt độ đô thị?

Từ thực tế thành phố Lyon (Pháp), một nhóm nghiên cứu quốc tế đã công bố những phát hiện bất ngờ liên quan đến các tấm pin mặt trời (PV) được lắp đặt trên mái nhà.

Vietnamnet.vn

🔥🏙️ شهرهای گرم در حال تغییرند!
در بی‌ینال ونیز ۲۰۲۵، معماران و فناوران از سراسر جهان گرد هم آمده‌اند تا با کمک هوش مصنوعی، گرمای سوزان شهرها را مهار کنند.
از پاویون آلمان تا دوقلوهای دیجیتال سنگاپور، آینده شهرهای ما در حال بازآفرینی است. 🌱💡
#بی‌ینال_ونیز #معماری_پایدار #هوش_مصنوعی #شهرهای_گرم #معماری_هوشمند #پایداری #UrbanHeatIsland #VeniceBiennale2025 #SustainableArchitecture

https://dekorator.ir/biennale-venice-2025-ai-hot-cities/?utm_source=mastodon&utm_medium=jetpack_social

#Poland - #UrbanGardens help cities fight #ClimateChange

By Andrei Ionescu
July 1, 2025

"Warsaw isn’t short on parks or tree-lined boulevards, but a trio of Polish universities wondered whether smaller, resident-run gardens could add something crucial to the capital’s climate resilience.

"To find out, researchers from SWPS University, Warsaw University of Technology, and the Warsaw University of Life Sciences mapped every vacant meadow, former orchard, and post-industrial lot within easy walking distance of apartment blocks.

"They came up with a staggering 1,864 hectares (4,600 acres) – more than enough space, they say, for a citywide network of community gardens that soak up stormwater, cool overheated streets, and capture carbon.

"The investigation combined that spatial analysis with more than 250 in-depth interviews. The goal was to see who is already gardening, what motivates them, and how much social capital – trust, shared norms, cooperative spirit – might be harvested alongside tomatoes and herbs.

Who uses the urban gardens

"It turns out the movement is surprisingly broad. Urban gardening brings together all social groups, the team reports, from school children planting pollinator patches to cultural institutions converting courtyards into micro-farms.

"Still, two cohorts dominate the regular volunteer lists: retirees – often women with higher education – and young middle class families.

"Most gardens revolve around a core group of 10 to 15 steady hands, supplemented by casual helpers and passers-by who stop to chat, water, or simply lounge among the raised beds.

Motivation of urban gardeners

"Why do they show up week after week? According to study co-author Piotr Majewski of SWPS University, the motivations of urban gardeners vary.

" 'The most important ones are: #reconnection to #nature, positive contribution to the #environment, social relations, and mutual learning between #gardeners,' said Majewski.

"Food, interestingly, is not the primary driver. Leaders said harvests help, but real value comes from #biodiversity, #composting, and public workshops on #sustainable living.

Tiny plots, big impact

"Those activities tally with an expanding body of international research linking urban agriculture to climate adaptation.

"Even pocket-size plots act as #CarbonSinks, trap particulate pollution, and soften the #UrbanHeatIsland. Raised beds can be engineered to hold back flash-flood water, while #compost heaps divert organic waste from #landfills.

"For #Warsaw, the numbers are compelling. Nearly all of the identified 1,864 hectares (4,600 acres) lie within a quarter mile of housing, meaning a potential garden is no farther than a ten-minute stroll for most residents – and often half that.

"Such proximity, the experts argue, makes it easier to harness gardens as a distributed #GreenInfrastructure network in a warming metropolis of nearly two million people.

"Yet the real strength may be social. Garden groups knit neighbors together, boosting the informal networks that cities rely on during #heatwaves, #floods, or other climate-related shocks.

"Many interviewees said they joined to cultivate community first, vegetables second. Regular workdays double as impromptu skill‐shares: retirees pass on horticultural know-how, children learn ecological stewardship, and newcomers forge local friendships.

#UrbanGardens in city plans

"Majewski and his colleagues believe Warsaw’s planners should take that social-ecological synergy seriously.

" 'The system of community gardens should also be considered as a tool to support climate change adaptation solutions in urban policies in spatial planning – provided that they are considered an important link in the urban green infrastructure system,' he explained.

"To get there, the researchers lay out a handful of recommendations. First, city hall could weave gardens into official zoning strategies rather than treating them as informal afterthoughts.

"That might mean leasing public land at peppercorn rents, streamlining permits, or integrating gardens into new housing estates from the design phase.

"Second, municipal agencies could supply starter kits – soil, timber, rain barrels – while leaving day-to-day management to residents. Third, wider publicity would help spread the idea beyond the usual eco-activist circles.

Scaling gardens citywide

"The study also flags areas for further research. At what point does a collection of isolated plots start delivering measurable cooling or flood mitigation benefits?

"How can Warsaw ensure that garden networks thrive in all districts, not just affluent ones with vocal community groups? And what responsibilities will fall on municipal departments when gardens become part of critical infrastructure rather than hobby spaces?

"Those unknowns aside, the evidence is clear: Warsaw already hosts a vibrant cohort of 'hero #activists' who coax life from overlooked corners.

"With modest institutional backing, their trowels and #CompostBins could double as #ClimateAdaptation tools – cooling concrete and absorbing rainfall.

"Perhaps most importantly, they help draw neighbors together in a city that will need every ounce of solidarity as temperatures rise."

https://www.earth.com/news/urban-gardens-help-cities-fight-climate-change/

#BuildingCommunity #ClimateChange #CityPlanning #Resiliency #SolarPunkSunday #UrbanGardens #SpendingTimeInNature #GreenTime

Urban gardens help cities fight climate change

Urban gardens may hold the key to climate resilience - cooling streets, capturing carbon, and building social cohesion.

Earth.com