Mercator Ocean International's - @mercator_ocean latest report, based on Copernicus Marine Service data, summarises ocean conditions in 2025, which were marked by above-average global sea surface temperatures, widespread marine heatwaves, and global sea ice extent below the long-term average. These conditions were observed despite the onset of La Niña conditions.
This data visualisation presents three key insights into ocean conditions in 2025.
1️⃣ The main map on the first image shows sea surface temperature anomalies in the Northern Hemisphere for November 2025, with widespread warming and reduced Arctic sea ice extent in comparison with the long-term average.
2️⃣ The second graph shows daily sea surface temperatures for the global ocean, indicating that 2025 was the third warmest year for the global ocean since 1993.
3️⃣ The third graph shows that 2025 was the warmest La Niña year on record, with global sea surface temperatures exceeding previous La Niña years.
#CopernicusEU Marine data supports long‑term ocean monitoring by enabling assessment of key variables such as temperature trends, ocean–atmosphere interactions, and cryosphere change. These insights are key for monitoring the impacts of climate change on marine and polar environments.
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Sustainable construction is entering a decisive phase as regulation replaces rhetoric across architecture, engineering and infrastructure. The sector is adopting a measurable framework for environmental sustainability in construction, centring on whole life carbon assessment and verified data on embodied carbon in materials. Leading architecture firms have introduced a sustainability standard for glass, signalling that eco-design for buildings is advancing beyond marketing claims to measurable low carbon design outcomes.
Rising scrutiny of plastics in the built environment now combines lifecycle assessment and health-based evidence, accelerating the shift towards renewable building materials and circular economy in construction strategies. This evolution of sustainable building design aligns with the broader adoption of sustainable material specification and environmental product declarations (EPDs), ensuring that the carbon footprint of construction is tracked transparently across every stage of the project.
The incoming UK government faces intensifying pressure to clarify policy on retrofit funding, embodied carbon reporting, water resilience and the energy efficiency of data centres. Severe drought warnings and pressure on urban water systems underscore the urgencies of resource efficiency in construction and green infrastructure investment. These are becoming core metrics in whole life carbon accounting and life cycle cost evaluation, critical to achieving net zero carbon buildings and future-proofing green construction ecosystems.
Innovations in geothermal and renewable energy sources are redefining net zero whole life carbon trajectories, potentially transforming energy-hungry sites into models of carbon neutral construction. Low carbon construction materials and digital performance tracking are now integral to sustainable building practices and the broader decarbonising of the built environment.
The convergence of materials innovation, circular economy frameworks and decarbonised heat is reshaping sustainable architecture as a high-performance discipline. Industry leaders increasingly see sustainability not as compliance but as the essential business model for sustaining life cycle performance, achieving net zero carbon, and guiding the next generation of low-impact construction.
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