I also would like to bring your attention to the way that temperatures are recorded and where the weather recording stations are situated. Most are situated in cities, which are generating more heat as they expand and the siting of these weather recording stations is often poor. Take a look at this article from 2001 that shows how temperatures are rising in urban Miami but not the rural areas around it; guess where the official weather recording station is situated... Talking of weather recording station locations, here are some pictures of such US stations and I think the location problems are fairly clear and hence the reasons why the temperatures reported may be unreliable:



So that's temperature sensors near air conditioner exhausts or newly tarmacked surfaces or BBQs or parked cars with hot radiators, you can see more examples here.
Global warming, not man made and not even warming?
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