On June 25, 2007, Yoffe wrote an op-ed piece for the Washington Post attacking scientific claims of anthropogenic global warming, charging Al Gore with orchestrating a "campaign ... [of] fright and absolutes."[2] She was criticized by some for writing about a theory based largely on numerical evidence despite having recently written an article about herself titled "The Math Moron" in which she revealed that she tested at a first-grade level in mathematics.

What records that do exist show is that there was no multi-century periods when global or hemispheric temperatures were the same or warmer than in the 20th century

Uh the issue isn't that it was warmer than the 20th century. Just that it got warmer.

Link

Now, I love this:

There are not enough records available to reconstruct global or even hemispheric mean temperature prior to about 600 years ago with a high degree of confidence.

Pay attention folks. What desertswine's expert is saying is that they only have about 600 years of usuable information.

That of course is a convenient way to "get rid of the Medieval warming period.... But does it? From my link:

Second Assessment Report of the IPCC, there was no hockey stick. Instead the millennial climate history contained a MWP and a subsequent Little Ice Age, as shown as in Figure 3. The late 20th century appears to be nothing special by comparison. It is easy to see why this graph was a problem for those pushing the global warming alarm. If the world could warm so much on such a
short time scale as a result of natural causes, surely the 20th century climate change could
simply be a natural effect as well...

Those wanting to "get rid of" the MWP run into the problem that it shows up strongly in the data. Shortly after Deming's article appeared, a group led by Shaopeng Huang of the University of Michigan completed a major analysis of over 6,000 borehole records from every continent around the world. Their study went back 20,000 years. The portion covering the last millennium is shown in Figure 4. The similarity to the IPCC's 1995 graph is obvious. The world experienced a "warm" interval in the medieval era that dwarfs 20th century changes. The present-day climate appears to be simply a recovery from the cold years of the "Little Ice Age." 5

So what does that mean? If you believe the NOAA guy there wasn't enough evidence.... So he limits the time frame to 600 years (and that gets rid of the Medieval Warming). But the 600 year limit reduces everything to less than a heart beat in the history of earth's climate change. Neat, eh? Information doesn't fit? We'll just include it out. (My apologies to Samuel Goldwyn.)

If you believe the University of MI guy, who took 6000 bore holes going back 20,000 years, all over the world, the Medieval Warm period is real.

Now, who to believe???

Well, NOAA is funded by the feds, and if there is a big climate crisis, guess what?? Money is falling from the sky.

In the meantime, the MI team gets rocks thrown at them for just pursuing basic, non-exciting research that sure won't get Algore on their side...or the Popes and Cardinals of man made global warming...

Seems like the science says we should get ready to break out the long-johns sometime in the next few hundred years instead of worrying about GW.

GW-->diluting/shutting down thermohaline-->Ice Age