For some time, climate realists have been claiming that NOAA has altered or otherwise manipulated U.S. climate data in order to construct warming trends. California may provide a useful exhibit as to the “unique” nature of warming trends over the past 30 years in the NOAA National Climatic Data Center (NCDC) database, and raises even more concerns over what NOAA is doing to the data. According to the NOAA-NCDC database, which forms the core of NOAA's reporting on climate change in the United States, there has been a strong increase in California's statewide average annual temperature since 1984 -- on the order of 2.1°F per century, although the trend isn't significant (p=0.16 parametric, p=0.14-0.22 non-parametric). There are seven climate divisions throughout California in the NOAA-NCDC database. All seven climate divisions have positive correlations in average annual temperatures during the past 30 years according to NOAA-NCDC, although only one of the...(Read Full Post)