Since the Obama "science" team took office, the corruption of science has become an administration mantra - whether it's the green energy science scandals like Solyndra or the bogus climate science of NOAA, it has meant science credibility being dragged through the mud, needlessly - speaking of which....
(click on image to enlarge)
These 2 charts are plots of NOAA's historical global temperature record for the month of October 1899 and May 2011. NOAA has reported 27 different temperatures for each month since January 1, 2012.
Of the 1,529 months included in the entire NOAA temperature dataset, these two months have had the largest change reported during the year 2012.
And it's not just these two months that have experienced retroactive temperature adjustments - every single month in the entire dataset has been adjusted at least 27 times during 2012. Again, that's just for 2012, with the same level of revisionist fabrications occurring in years 2011, 2010 and 2009.
Another bizarre attribute of officially sanctioned revisionism is that most of the months prior to 1950 having cooling "adjustments" similar to the blue curve; and, most of the months post 1950 have warming "adjustments," similar to the red curve. These attributes, when combined, proves that 'Obama-warming' is a phenomenon that NOAA/NCDC scientists alone have discovered (created?).
How unusual are the frequency of these adjustments? For comparison sake, the HadCRUT global temperature dataset has not been revised once in 2012, and its monthly temperatures go back to 1850 (although, HadCRUT will at some point in the near future change to a new Version 4 dataset); for the two major satellite datasets (UAH and RSS), there have been no adjustments made to their entire monthly temperature record in 2012; and finally, the NASA/GISS dataset has had one occurrence in 2012 of an entire dataset revision, plus every month the GISS folks do seem to "adjust" more recent monthly records with some frequency.
So, for the record, NOAA is the only major climate research agency that feels compelled by some agenda, to not only "adjust" temperatures on a monthly basis, but to do so multiple times within each and every month for their entire dataset going back to January 1880. And to corroborate that some sort of agenda is driving all these adjustments, NOAA's end result is always an enhancement of the 'Obama-warming' phenomenon.
Speaking of January 1880, NOAA has also reported 27 different temperatures for that month in 2012. This single example of the bizarre fabrication of global temperatures simply makes a mockery of climate science and the historical evidence, which is cause enough for any sane person to conclude that the "global warming" that NOAA scientists speak of is essentially a bunch of bullshit.
One last thought. There are those who attempt to justify the ludicrous level of adjustments to the historical measurements as a "quality control" process being rigorously conducted by NOAA researchers. Rest assured though, the above two charts (red and blue) are actual proof that NOAA "scientists" must exist in some bizarro 'QC' world that is at the level of Six Sigma weirdness (in a bad way).
In conclusion, the blatant and politically-driven temperature adjustments being performed by NOAA/NCDC on a monthly basis provides even further ammunition as to why the world needs to move to a better and more accurate methodology towards temperature measurement and reporting. Ironically, it is NOAA itself that has already conducted a large experiment, and in doing so, proving their monthly bizarre battle with the empirical evidence is truly unnecessary and superfluous.
Note: 'C3' has downloaded 27 different NOAA global temperature datasets from the NOAA web server during 2012. There actually could have been more than 27 since 'C3' may have missed several revisions over the course of 2012.