The Ordnance Survey (OS) releases a new heat vulnerability index for cities in Great Britain, assessing which places are most affected by extreme heat, including both present conditions and projections for the future. The research concludes that Portsmouth is the most vulnerable city, citing its propensity to warm under extreme conditions.
The analysis also identifies other cities that are expected to face substantial warming as temperatures rise. The Guardian reports that Portsmouth, Leicester, Exeter, Bristol and Nottingham are among the cities projected to warm the most by the end of this century. The Mail outlets focus on Portsmouth leading the list, reflecting the same underlying OS findings.
While coverage emphasizes different aspects—some outlets highlight which cities are most at risk today and others point to which are forecast to warm most by century’s end—both draw from the same OS research framework and the concept of “urban heat islands.”
