Can an extreme volcanic eruption – stronger than any in modern times – lead...

NASA Climate Change 2 years ago

Can an extreme volcanic eruption – stronger than any in modern times – lead to catastrophic cooling of Earth’s climate? Not really, a new study found. Researchers have long speculated how a “volcanic winter” could potentially threaten humanity. Previous studies agreed that some planet-wide cooling would occur but estimates have ranged from 3.6 to 14 degrees Fahrenheit (2 to 8 degrees Celsius). In the new study, scientists from @nasagoddard Institute for Space Studies (GISS) and @columbia found that even the most powerful blast wouldn’t exceed 2.7 degrees Fahrenheit (1.5 Celsius) of cooling. They also investigated why model temperature estimates diverged. The answer: the size of microscopic sulfur particles injected miles high into the atmosphere greatly impacts post-eruption cooling. The team simulated super-eruptions over a range of particle sizes and found that super-eruptions may not alter global temperatures dramatically more than 2.7 degrees Fahrenheit – not orders of magnitude more than the largest eruptions of modern times. Image description: Photograph of the eruption of Mount Etna in Sicily, Italy in October 2002 from the vantage of the International Space Station. The volcano has several volcanic plumes, including one large plume of dark gray-brown smoke and ash coming from the top of the volcano. #Earth #Climate #Volcano #Supervolcano #Atmosphere

layersDaily Sustainability Digest

Published about 22 days ago



Financial institutions are accelerating sustainable construction by aligning lending with measurable environmental performance. Santander UK’s decision to adapt mortgage models for Octopus Energy’s Zero Bills homes integrates credit policy with energy-efficient buildings, translating net zero carbon ambitions into mainstream financial metrics. This shift signals the emergence of whole life carbon assessment as a determinant in property valuation and positions embodied carbon and life cycle cost analysis as standard tools of risk management across the sector.

Digital transformation is amplifying the movement. The Monklands digital hospital project in Scotland demonstrates how offsite manufacturing, lifecycle assessment and connected data platforms enhance building lifecycle performance, minimise waste, and verify embodied carbon in materials. Durham’s adoption of digital planning and assessment tools reflects a broader drive toward resource efficiency in construction and environmental sustainability in construction. Together these initiatives redefine sustainable building design by embedding whole life carbon accountability into design and delivery workflows.

Policy remains an enabling force but the centre of momentum is shifting from government mandates to operational proof. A renewed national emphasis on green affordability and the integration of social equity with decarbonising the built environment are reinforcing the transition toward net zero whole life carbon outcomes. These developments illustrate a maturing circular economy in construction where sustainable building practices, low carbon design and eco-design for buildings converge to deliver verifiable carbon footprint reduction. The industry’s direction is now measurable—kilograms of CO₂, minutes saved, resources reused—evidence that green construction is evolving from aspiration to tangible low carbon building performance.

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