How well do you know science? Do you understand what the
enthalpy of vaporization is? Ground water retention from rain? How much water that once used to soak in the ground and provide evaporation cooling throughout the year, now is going in storm sewers instead? This is above and beyond the albedo and emmisivity changes of natural vegetation to concrete, asphalt, and buildings.
For every 1 cm of rain water that in the past would soak into the ground, not make it to a stream or river, and later evaporate back into the atmosphere, cools the ground by 22,570,000 joules for every square meter. A joule is one watt-second. Therefore, for every centimeter in a year loss to storm sewers rather than being evaporated, we lose 0.716 W/m^2 of cooling. More to the point, the net warning is 0.716 W/m^2.
What does that mean for where you live? Here in Portlandia, we get an annual average of 42 inches a year. That's over 100 centimeters a year. Naturally, some of it before we capped of the land would make it's way to streams and rivers, but most would be absorbed by the land and later cause cooling. If we lost 60 centimeters in Portlandia to storm sewers that would have previous cooled the land, then we lost 42.9 W/m^2 of cooling...
In other words, this effect caused 42.9 W/m^2 of the urban heat island effect. I laugh when alarmists cry about "record temperatures" in a city, then play it off as CO2 and other effects. Sure, it's man-made, but mostly because we have practically got rid of the areas natural cooling.
Now the contamination to meteorological station.
I don't think there are any meteorological station in use, that are far enough away, that when they are downwind of a town or city, aren't affected by the warmer air, cause by loss of evaporation cooling.
I really don't care to continue, and probably go past 5,000 characters explaining how albedo works. And how little soot it takes to reduce the albedo enough to do ten times more melting of ice than CO2 or a small temperature increase ever could.
