Where did that gem get flushed from??? There are 100s of proxy studies.. you can graph anything you like.. If you IGNORE ENOUGH OF THEM --- you can get results like that..
Problem is --- Reconstructing a GLOBAL AVERAGE from proxy studies that IGNORE 70% of the earth's surface is a FOOLISH ASS thing to do..
Better to look at the 100s of studies and REALIZE that most of them post temp results HIGHER than the common era and distributed world-wide..
Without the theatrical effort to produce a STONE STUPID "Global Average" for the 1200s.
If you wait a month --- the next IPCC will also correct itself and you on this persistent lie.
I believe this graph is called MBH99 on McIntyre's site. The original Hockey Stick graph is called MBH98. This newer version suffers from all the errors that the earlier one suffered. McIntyre tears it to shreds on his site. One piece of chicanery you will note is the black line at the end. That represents global average temperatures supposedly derived from actual recorded temperatures. So what Mann is doing is combing proxy temperatures with actual temperatures. Anyone knowledgeable in statistics would tell you that such a procedure is totally illegitimate.
This maneuver is how Mann performed the "trick" known as "hide the decline." If you examine the proxy graphs you'll not that they all show a downturn towards the end. That doesn't look very menacing when you're trying to scare taxpayers into coughing up $73 trillion dollars. So what Mann does is overlay the graph of averaged recorded temperatures on top of the graphs of the proxies. That's how he "hides the decline."
This graph is proof that Michael Mann is a con artist who is deliberate publishing bogus data. Anyone who falls for this stuff is terminally gullible.