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Politics : The Environmentalist Thread

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To: longnshort who wrote (6867)	7/5/2006 7:29:31 PM
From: maceng2	Read Replies (1) of 36917

The origin of that graph comes from these data sets cru.uea.ac.uk There is a FAQ in the link too. Over land regions of the world over 3000 monthly station temperature time series are used. Coverage is denser over the more populated parts of the world, particularly, the United States, southern Canada, Europe and Japan. Coverage is sparsest over the interior of the South American and African continents and over the Antarctic ....continuing.... Both these sources also extensively discuss the issue of consistency and homogeneity of the measurements through time and the steps that have made to ensure all non-climatic inhomogeneities have been removed. i.e. My interpretation is that best efforts have been made using correlation techniques to factor out local heating effects of cities and urban environments. I am not a climatologist or meteorologist, but from what I have seen they treat the data with good scientific know how and procedure. It is also true that the data sets have an ongoing correction process as more accurate facts are uncovered. The essential trend seems to beyond reasonable doubt though.

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