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Politics : Politics of Energy -- Ignore unavailable to you. Want to Upgrade?


To: Alastair McIntosh who wrote (74466)1/28/2017 1:42:32 PM
From: TimF  Read Replies (2) | Respond to of 86355
 
How do you infer that I'm challenging specific adjustments from me saying I'm not doing so?

If there was any sort of attempt to "cook the books" why would pre 1940s sea surface temps be adjusted upward resulting in a lower rate of warming?

If it was consistent outright fraud, there might be no such adjustment (if there was it would only be to try to hide the fraud, "see we adjust both ways"). But I am not alleging any such fraud.

An honest but biased attempt to make adjustments will (unless its not very thorough and doesn't make a lot of adjustments) find adjustments in both directions, just with a (quite possibly totally unconscious) bias for adjustments in one direction over the other.


from arstechnica.com hardly an anti-global warming source, in fact the title is "Thorough, not thoroughly fabricated: The truth about global temperature data How thermometer and satellite data is adjusted and why it must be done. "

Notice that the earlier adjustments (differences between the line for raw data and the other lines) are 1 - Not as directional. 2 - Smaller. Are modern measurements of temperature in the US so much less accurate then in the past, and so much more likely to be biased towards showing less warming (despite the increase in the heat island effect)? I really doubt it.

You could also note that even the raw data shows warming. I'm not disputing the point that the world (or in the case of the data presented above the US) has been getting warmer over time.