Universities Weather Research Network (UWERN) Urban Meteorology Programme (URBMET) was a NERC Urban Regeneration and the Environment (URGENT) Air project (GST/02/2231 - Duration: 1/01/1999 - 30/6/2002) led by Dr Stephen Belcher, University of Reading.

The key issues of this project were:

-how boundary-layer motions drive small-scale street-level circulations within the urban canopy
-how street-level circulations feed back into the larger-scale boundary-layer above by mixing heat, moisture and momentum
-how small-scale circulations within the streets mix pollutants from street-level into the boundary-layer above
-how larger-scale motions above affect the mixing.

This work brought together expertise from dynamical and observational meteorology, and theoretical and experimental fluid dynamics to make full-scale and laboratory measurements of the atmospheric boundary-layer over urban areas. The project developed a sound understanding of the processes of mixing and transport from the street-level into the boundary-layer. It also developed methods for parameterising these processes in urban-scale dispersion models and in numerical weather prediction models through an urban canopy model of urban areas.