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by Max Headroom » Sat, 30 Nov 2013 11:47 am
I reckon buildings play a much bigger role in our weather than we think.
This doesn't only apply to wind. Think of water run-off; every time a plot of land becomes a building, a car park or a paved area, the rain water there can no longer seep into the ground. Instead, it will collect and will then need to run off. Basically, as more and more fallow land becomes built up, more and more water needs to run off through drains and the like.
Temperature? As concrete is mostly silica, it's excellent at retaining heat. In so doing, built up areas become a heat sink at night, whereas previously those areas, when still wooded, would cool off at night. I think this is one of the reasons why I used to see dew and dew puddles in the early mornings, but now hardly ever do. The mornings aren't as chilly as they used to be.
Then again, it could all be global warming eh.