What’s that blue hue? 🧊 Seasonal melting produced striking hues atop the...

NASA Climate Change 2 years ago

What’s that blue hue? 🧊 Seasonal melting produced striking hues atop the sea ice before it broke away from the coast. The Larsen A and B embayments in these images now often contain seasonal sea ice (frozen seawater that floats on the ocean surface, often covered with snow) instead of ice shelves. Much of this sea ice, known as “fast ice,” clings to coastlines and ice shelves. Fast ice can help resist against the seaward flow of glaciers on land and slow their contribution to sea level rise, though fast ice is less effective at this buffering effect compared to a much thicker ice shelf. Video description: 00:00 A satellite image centered on the Larsen A and B embayments on the Antarctic peninsula’s eastern side captured on December 19, 2023. The ice shelf is on the left side of the image with some light blue seasonal sea ice on the Larsen A embayment and above. Two white circles highlight this sea ice. The text “What’s that blue hue?” is at the top of the image. 00:05 The text “Seasonal melting produced striking hues atop the sea ice before it broke away from the coast.” is now at the bottom of the image. 00:07 The image switches between the first image and an image of the same area captured on January 1, 2024. The ice shelf is on the left side of the image and the dark blue water is now where the seasonal sea ice of the Larsen A embayment was previously. 00:12 The text “Much of the sea ice seen here is known as “fast ice,” which clings to coastlines and ice shelves.” is at the top of the image. An arrow points to this sea ice. #NASA #Earth #Climate #SeaIce #FastIce

layersDaily Sustainability Digest

Published about 10 hours ago



Renewable energy supply remains at the centre of sustainable construction progress, driven by a sharper emphasis on whole life carbon reduction and embodied carbon transparency. The landmark Power Purchase Agreement between Ecotricity and major UK venues such as The O2 and Hammersmith Apollo introduces hourly-matched renewable electricity directly into construction-adjacent infrastructure. This approach demonstrates how low carbon design and sustainable building practices are extending beyond individual projects to influence energy management across the built environment, creating a measurable impact on the carbon footprint of construction.

Innovation in low carbon building technology has accelerated through electric vehicle integration within heavy industry. Munro, the Glasgow-based manufacturer of electric 4x4 vehicles, has secured £2 million to expand production for mining, defence and construction sectors. The company’s portfolio aligns with net zero carbon buildings objectives and supports the decarbonising of the built environment, enabling contractors to meet life cycle cost targets through improved efficiency and reduced fuel dependency. Such advancements signal how sustainable design is being applied to both the machinery and materials that underpin green construction.

In materials science, the substitution of traditional carbon black with char—an upcycled byproduct of chemical recycling—marks a step forward in circular economy in construction principles. This innovation reflects a growing reliance on low embodied carbon materials and supports eco-friendly construction through reduced dependency on fossil-based additives. The move embodies whole life carbon assessment methodologies where each material’s energy input and reusability are evaluated to enhance building lifecycle performance, ensuring resource efficiency in construction extends across entire supply chains.

Skills and regulatory frameworks are evolving to match these innovations. The Institute of Sustainability and Environmental Professionals has launched the UK’s first accredited carbon accounting curriculum, designed to support ESG practitioners in conducting lifecycle assessments and environmental product declarations (EPDs). By integrating life cycle thinking in construction education, the programme strengthens understanding of embodied carbon in materials and fosters sustainable material specification that ensures transparency within sustainable building design. It also aligns with standards such as BREEAM and BREEAM v7, essential benchmarks for environmental sustainability in construction.

Policy continues to reinforce technical change. The EU’s simplification of its Carbon Border Adjustment Mechanism deepens alignment between trade and climate performance, addressing the environmental impact of construction imports while reinforcing circular economy goals. The initiative strengthens Europe’s drive toward carbon neutral construction and reinforces the importance of end-of-life reuse in construction. Together, these shifts suggest a sector embedding whole life thinking at scale, where green building materials, renewable building resources and eco-design for buildings converge to deliver net zero whole life carbon outcomes that redefine sustainable urban development.

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