(click on any chart to enlarge)
A recent letter from 300 scientists is requesting that Congress assure that the Data Quality Act is complied with, which NOAA has not done regarding both the U.S. and global empirical temperature observations.
When 300 scientists put their name and reputations on the line criticizing NOAA, it can be assumed that the issue is one of significance and importance to science.
And this issue is now coming to a head after 7+ years of both NOAA and NASA blatantly adjusting historical temperature measurement records on a continual basis.
In essence, these two climate research agencies have purposefully cooled the past; and then warmed the modern temperatures in an effort to make global warming seem more severe than actually has taken place since the Little Ice Age. (See here a recent example of NOAA's adjustment handiwork.)
Their combined adjustment "methodology" has certainly mislead the public and policymakers, which has added to the growing mistrust that the public has for politicians, scientists and bureaucrats.
The group of charts above reveals the gross manipulation of temperatures that strongly indicates an anti-science motivation to meet the current administration's political needs.
Charts #1 & #2 show two examples of the constant adjustments by both NOAA and NASA. These examples show the number of adjusting steps taken since 2008 to cool past historical temperatures and the number of steps to raise a modern month's temperature.
Charts #3 & #4 show the total amount of adjustments by month since 1880 for NOAA and NASA. The fabricated warming of modern temps and cooling of pre-modern temps is more than obvious - it is unequivocally blatant and an unprecedented level of science tampering.
All of these charts were compiled by Ole Humlum, a well-known university scientist/professor from Norway who publishes peer-reviewed climate change research. Go to his 'Climate4You' site to access a large volume of valuable climate information.