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

To: Bilow who wrote (46783)

1/26/2014 7:48:39 PM

From: Wharf Rat

Read Replies (1) | Respond to of 86356

"it began its significant rise around 1950:"

1850 285.2
1880 290.8
1945 310.3
data.giss.nasa.gov

I don't explain away pauses others try to create.

Chart of the temperature anomalies for 1950-2013, also showing the phase of the El Niño-La Niña cycle. (Image Credit: NASA/GSFC/Earth Observatory, NASA/GISS)

" it began its significant rise around 1950:"

What a coincidence. 2/3 of the warming has been since '75

"It takes time to warm things up"
In this case, IIRC, the fast response time is 40 years for 60% of the total response.
Here's what happens if you shift lines on a graph. it's an interesting idea.

Indeed, the relationship between fossil fuel consumption and global mean temperature is strongest* when the fossil fuel series is lagged behind temperature by 25 years. The two curves are shown in Figure 4. The red curve (fossil fuel consumption) has been shifted to the right by 25 years, so that one can see how the rise in temperatures could plausibly have been caused by the increase in fossil fuel use 25 years earlier. Observe that the elbow in the red line now coincides with the beginning of the recent upward trend in global mean temperature (about 1980).

Figure 4: Global warming (blue) and fossil fuel consumption delayed by 25 years (red, right-hand scale).

tqe.quaker.org