Was the hockey stick basically correct?

Question

The National Academy of Sciences said it was. Since then it's been duplicated many times, with better statistical methods.

http://www.globalwarmingart.com/wiki/Image:1000_Year_Temperature_Comparison_png

Answer 1

i

Answer 2

No, there are studies, as well as historical records that indicate the the MWP was as warm or warmer than present, the hockey stick downplays the MWP.

Answer 3

ummm, you mean like the temperature chart 1/4 of the way down the page, that kicked up starting around 1910?

http://www.sciencebits.com/CO2orSolar

seems so.

however, i think al gore has taken far more flack.

and while he often promoted the worst scenario, he was generally correct also.

oh my, it just occurred to me.

are there Swift Climate Veterans posting?

Answer 4

Yes.  Your additional details took the words right out of my mouth.  The NAS confirmed the basic accuracy of the 'hockey stick', as have many subsequent reconstructions.  Even those who dispute the accuracy of the statistical analysis in the 'hockey stick' agree that the result is essentially correct.

I don't understand why this study has become such a lightning rod for deniers.  If they're not insulting Gore, they're using the 'hockey stick' to insult climate scientists.  But if the analysis that created the 'hockey stick' was wrong, it certainly wasn't intentionally wrong, and the graph itself is largely accurate.  So what's the big deal?

Answer 5

No it wasn't, are you done yet, go home Bob your planet is calling you back.

Answer 6

The hockey stick was not correct.  The big deal is that it suppressed the MWP which demonstrates a higher temperature without human CO2 emissions.  Mann's methodology produces a hockey stick even with random numbers:  http://landshape.org/enm/a-new-temperatu...   Further, the blade of the stick just happens to occur when he and his co-authors started using thermometers instead of tree ring proxy data.  

Answer 7

Bob the hockey stick graph is completely fictional because it assumes 1850 as the global norm temperature and skews the data mathematically to suppress higher temperatures that precede that date and enhance those that follow it. It also does not recognize that world temperatures have effectively leveled off following the 1930s and only wobbled slightly below the 1934 figure since then. It is the adherents religious defense of the indefensible that fuels the rising tide of skepticism as those who took AIT on faith to begin with now begin to question that decision and study the issue on their own.

It takes very little study by even the dimmest mind to discover that the whole hockey stick pogrom is a total work of political fiction and that there exists no data that supports it now that NASA is correcting the contaminated data it was based on.