Skeptics, can you show me graphs (with source) of the earth temperature decreasing?

Question

over the last decades.

Only with sources (I can too use excel and make my own graph)

Answer 1

Enraged - I did the plot (with a trend line) for you.  Here's the link:

http://i157.photobucket.com/albums/t55/k...

Oops, I mislabeled the legend, it's actually 1975 - 2006 (as you asked).

Edit: Drat, it looks like my chart wasn't needed.  You bunch of link-users and plot-plagiarizers need to create some of your own for a change ;-)

Answer 2

http://tamino.files.wordpress.com/2008/0...

A shoot Dana beat me to it.

(Dana I was going to give you credit for helping me find it faster, since it's in Tamino's latest Blog entry.)

Answer 3

They can not, as seen by Dr. (matter between his ears) he didn't even bother to look at the data he provided.  Amazing!

Answer 4

From NASA:

http://data.giss.nasa.gov/gistemp/graphs...

The temps from 1998 have leveled off or decreased.

(yes, I know this is US data, but the US is still part of the globe, and still produces the most co2 per person.  That being the case, temps should be increasing)

[Edit] Yea, and if China's pollution and ghg's didn't cover California it would be a better place......

Answer 5

I asked the same question last night, but none of the skeptics presented anything.

I do have a question for you though, Nickel. If you find the time, could you possibly plot the data Dr. Jello presented and fit a trend line to it (just for the '75-'06 period)? I've tried, but my mad spreadsheet skillz are so poor it just came out a mess.

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Hey, thanks much, Ken! That's really interesting.  Iwonder what Dr. Jello would say about it, since he seems certain the trend for the lower 48 is negative.

I'm going to save the image to my computer for future reference, if'n you don't mind.

Answer 6

I'll save them the trouble.  Here is a plot of GISS, HadCRU, and NCDC temperature data on the same scale with the same base period:

http://tamino.files.wordpress.com/2008/0...

The skeptic argument is that if you draw a line between 1998 and 2007, it has a negative slope.  Therefore, the temperature is decreasing.

Of course, this is not a valid statistical test.  If you examine a 5-year running average, the slope is clearly positive:

http://data.giss.nasa.gov/gistemp/graphs...

And if you do a best fit line over the same period, the slope is again clearly positive:

http://tamino.files.wordpress.com/2007/0...

http://tamino.files.wordpress.com/2007/0...

It's not that the skeptics are disputing the temperature data or using different data.  It's that they're incorrectly (and amateurishly) analyzing the data.

*edit* nice graph, Ken!