Crick
Gold Member
- May 10, 2014
- 29,113
- 5,627
A paper they put out:
link: http://www1.ncdc.noaa.gov/pub/data/ushcn/papers/vose-etal2003.pdf
excerpt:
1. Introduction
[2] The U.S. Historical Climatology Network (HCN)
database [Easterling et al., 1996] is commonly used to
quantify climate change because it contains adjustments
that account for historical variations in observation time
[Karl et al., 1986], station location/instrumentation [Karl
and Williams, 1987], and population growth [Karl et al.,
1988]. In a comparative analysis of the conterminous
United States, Balling and Idso [2002] determined that
adjusted HCN temperature trends for the past 30 years were
slightly more positive than those derived from other datasets
[e.g., Jones, 1994; Christy et al., 2000]. This led to the
hypothesis that the HCN contained a ‘‘spurious’’ warming
that likely resulted from the adjustments for historical
variations in observation time. Given this supposition, the
purpose of this paper is to demonstrate the reliability of the
adjustments for this ‘‘time of observation’’ bias in HCN
http://www1.ncdc.noaa.gov/pub/data/ushcn/papers/vose-etal2003.pdf - the SAME paper from which jc extracted the above comment
"The results indicate that HCN station history information is reasonably complete and that the bias adjustment models have low residual errors. In short, the time of observation bias adjustments in HCN appear to be robust."
And, just to be accurate, this paper was written by employees of NCDC, not NASA or NOAA. And, of course, it nowhere constitutes a statement that anyone's data is "fake"