|Ashley Patton and Gareth Farr measuring groundwater temperatures |
at the famous Brains Brewery using a specially adapted water
level ‘dipper’ equipped with a thermometer and conductivity meter.
No beer was consumed during the survey, honest!
For the last year BGS scientists have been monitoring shallow groundwater temperatures across the city of Cardiff, and surprisingly they found that the ground beneath the city is significantly warmer than expected. The heat lost from buildings and sewers in cities is naturally stored in the ground, as well as released to the atmosphere, in a process referred to as the ‘Urban Heat Island’ effect. Our work has shown that, in Cardiff at least, this anthropogenic effect has increased the groundwater temperature from 11 to 14o Celsius in many places. So why not use this abundant source of free, low-carbon heat to warm poverty stricken homes in the city?
To learn more about our project read on...
|A flooded basement in the city centre shows |
how shallow the water table is under the city.
|A shallow groundwater temperature map for the city of Cardiff (average 2014 spring time temperatures, in degrees Celsius) (after Patton et al., 2015).|