Measuring the effects of trees on heat mitigation in Northern France

Measuring the effects of trees on heat mitigation in Northern France

The Urban Heat Island effect (UHI) is the phenomenon whereby the built environment experiences significantly warmer temperatures than its rural hinterland. This is due to a high density of impermeable, dark surfaces and increased energy consumption for cooling, transport and related infrastructure. The effect significantly impacts the sustainability and quality of life in metropolitan areas. Incorporating trees into urban landscape design is a Nature-based Solution (NbS) that can help mitigate the UHI effect as trees cool their surroundings via evapotranspiration and shading. In Northern France, sensitive grey globe temperature sensors assessed extremely fine-scale warming patterns. Researchers compared temperatures in the immediate vicinity of trees to those in the proximity of building walls and asphalt. Meanwhile, citizen scientists took infrared pictures of microclimates around trees, observing the differential effects of grey and green infrastructure.