How Britain's mapmakers track climate change
Once used to defend Britain's shores against Napoleonic France, the Ordnance Survey's detailed maps are now essential for tracking and adapting to climate change.
The Ordnance Survey, Britain's national mapping agency, uses its detailed maps to track and adapt to climate change. Tom Gray, a utilities and transport expert at the agency, says examining traditional maps can clearly illustrate the impacts of climate change. The Ordnance Survey, established 230 years ago, maintains an extensive National Geographic Database containing over 600 million features and receiving 30,000 updates daily.
The data highlights areas at risk of climate-related subsidence, wildfire hazards near homes, and flood-prone regions - with 12% of the UK's strategic road network and 20% of its rail network situated in the highest flood risk zone. Emergency services utilize this data to plan their responses to climate emergencies, including flood management and wildfire prevention.
Drones play a crucial role in updating maps, providing precise footage to capture changes down to a centimeter. One drone pilot, Helen Jones, explains how her aerial footage aids in predicting potential issues like gas and water cutoffs or evacuation needs. The agency's meticulous process ensures every feature, from buildings to bins and lampposts, is accurately represented.
Jones notes the severe impact of the recent drought in England and Wales, emphasizing the importance of comprehensive mapping in climate change adaptation.
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