Photos by @jameswhitlowdelano Interesting pushback to the Heat Island...

Every Day Climate Change 1 year ago

Photos by @jameswhitlowdelano Interesting pushback to the Heat Island Effect/urban deforestation post using an argument similar to what a Malaysian logging conglomerate might use. Apologies to those who draw offense when facts & evidence get in the way of a good narrative. Image #1: Heat Island Effect: In the midday sun in Tokyo on this July day it is 45.7 C (114.3 F). The Heat Island Effect in Tokyo is exacerbated by urban deforestation. Seijo is in Tokyo's Setagaya Ku (Ward), which has suffered a 34.7% tree cover loss since 2013, according to a University of Tokyo, Department of Natural Environmental Studies research paper, intensifying the heat island effect in urban Tokyo. In "leafy" districts, like Seijo, few trees exceed 3 - 4 meters in height because few houses stand long enough for the trees to reach mature height or the trees are assiduously pruned to avoid shedding leaves, seeds or fruit on neighbors' properties. When a house in Tokyo is demolished, rarely lasting longer than 25 years, the entire property is razed, including removing all trees or shrubs, leaving bare ground. Seijo, Setagaya-Ku, Tokyo, Japan Image# 2: On a treeless street, parallel to this one, in the direct sun, just steps away from this shaded street in Tokyo's Seijo neighborhood, the sun drove the temperature up to 45.7 C (114.3 F). Treelined streets like this one are so rare in Tokyo's Setagayu Ku (Ward), that Seijo is famous for these "sakura" cherry trees. Despite being a blistering 37.5C (99.5 F) under the tree canopy, the temperature drops by 8.1 C (14.6 F) compared to its parallel asphalt neighbor exposed to the punishing rays of the sun. Image#3: When older residential structures, which rarely last more than 25 years in Tokyo, are razed, the property is wiped clean of all trees or shrubs that shaded the ground. Image# 4: The Sengawa (Sen River), which separates Seijo from Soshigaya in Setagaya Ku (ward) in Tokyo, is sealed in concrete. If rivers are not reduced, like this one, to a concrete trough, they are walled or leveed as part of massive flood control projects in this densely-populated, typhoon-prone country. #climatechange #heatislandeffect

layersDaily Sustainability Digest

Published about 12 hours ago



Compressed earth block projects in Kenya’s drylands are signalling a shift towards sustainable construction that balances material performance with environmental sustainability in construction. By replacing kiln‑fired bricks and cement with locally produced low embodied carbon materials, these buildings achieve reduced embodied carbon while enhancing thermal comfort through passive design. The combination of thermal mass and vapour‑open walls supports sustainable building design adapted to warmer climates and delivers measurable gains in lifecycle assessment and life cycle cost efficiency.

As whole life carbon and embodied carbon in materials become central to regulation and procurement, codification and quality assurance will dictate how rapidly such natural materials scale to mainstream use. Compressed earth blocks in Kenya exemplify how local innovation aligns with sustainability targets and social benefits for communities adapting to climate stress.

European policy is steering the supply chain towards a circular economy in construction. Tighter controls on plastic imports are designed to foster a stable market for compliant recycled polymers and strengthen traceability. For manufacturers pursuing higher recycled content, this supports circular construction strategies and improves environmental product declarations (EPDs). For specifiers and project teams, it provides a stronger evidence base for whole life carbon assessment within sustainable building practices and reinforces the commitment to resource efficiency in construction.

The UK’s accelerating offshore wind capacity, now exceeding 16GW, deepens the transition towards net zero carbon buildings and reduces the carbon footprint of construction by decarbonising energy supply. As sites electrify and equipment integrates renewable sources, the alignment between energy‑efficient buildings and carbon neutral construction grows closer. This shift enables data‑driven evaluation of whole life carbon performance and encourages contracting models that value carbon intensity alongside cost, advancing low carbon design and net zero objectives across the sector.

In alpine zones and high‑risk regions, the integration of climate‑informed planning, geotechnical monitoring and enforceable safety zones underscores the need to view climate adaptation as a core aspect of sustainable architecture. Infrastructure such as Spain’s high‑speed rail demonstrates how green construction combined with whole life carbon accounting can deliver deep emissions cuts while improving resilience. The global construction industry must merge such systemic decarbonisation with eco‑design for buildings, green building materials and sustainable material specification, ensuring that every project contributes to long‑term building lifecycle performance and to decarbonising the built environment.

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