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Post by radiant on Jul 27, 2009 20:40:36 GMT
My first post to the board and i am new to the study also but how do satellites measure temperature sufficiently accurately that we can find temperatures with the degree of accuracy needed for this subject? I pondered this and in my first search on the internet i found: www.isotech.co.uk/tempcal.htmlCan we also say it is true that every thermometer in every official measuring station is calibrated and the calibration is verified regularly? Who actually would be qualified to verify a standard terrestial thermometer capable of measuring accurately the small changes needed? I have a degree in chemistry and i dont think i could be relied upon to calibrate a thermometer to accurately measure 20 degrees unless i gave my measurements something like + or - 1 degrees working from my own calibrations using say freezing point of water and so forth and even then it sounds hopelessly optimistic. If climate has been measured to have warmed or cooled .7 of a degree does it actually mean anything? Edit: 1. spelling
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Post by dopeydog on Jul 27, 2009 20:58:32 GMT
Radient, You need to go to wattsupwiththat.com/ and check on Anthony Watts investigation of surface temperature stations. As far as satellite temperatures, Roy Spensor and John Cristy have spent their whole careers studying the earths temperature via satellite. I think there are definitely accuracy issues with satellites, but a lot less than surface stations. You just can't run to the south pole with rectal thermometer and take the earths temp.
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Post by socold on Jul 27, 2009 22:01:54 GMT
It's a statistical analysis of a noisy dataset
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Post by neilhamp on Aug 5, 2009 0:57:11 GMT
RSS is out for July Big increase to 0.394
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Post by glc on Aug 5, 2009 17:19:38 GMT
RSS is out for July Big increase to 0.394
UAH is +0.41
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Post by socold on Aug 5, 2009 19:16:55 GMT
RSS is out for July Big increase to 0.394 UAH is +0.41 I got a headline for Watt's blog. "UAH: Largest Monthly Temperature Rise on Record"
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