1) The linear warming trend during 1973-2012 is greatest in USHCN (+0.245 C/decade), followed by CRUTem3 (+0.198 C/decade), then my ISH population density adjusted temperatures (PDAT) as a distant third (+0.013 C/decade)
2) Virtually all of the USHCN warming since 1973 appears to be the result of adjustments NOAA has made to the data, mainly in the 1995-97 timeframe.
3) While there seems to be some residual Urban Heat Island (UHI) effect in the U.S. Midwest, and even some spurious cooling with population density in the Southwest, for all of the 1,200 USHCN stations together there is little correlation between station temperature trends and population density.
4) Despite homogeneity adjustments in the USHCN record to increase agreement between neighboring stations, USHCN trends are actually noisier than what I get using 4x per day ISH temperatures and a simple UHI correction.
With a load of new kit, it seems that DECC is hoping to give an even more accurate reading of when the world’s penguin population will croak and just when progress can begin for vineyards in the Hull region.
The moon-landing deniers responsible for these statements are Buzz Aldrin — MIT engineer and the second man to walk on the moon — and Harrison Schmidt — Harvard geologist, the last man to walk on the moon, a former senator, and key signatory to the letter...The science not being settled either way, the pedigree of the authors does not prove anything conclusive. But it does demonstrate that the position, held by hystericals such as Gore and repeated ad nauseam by progressives yearning for control, that only the “uninitiated” could possibly question the IPCC and its ilk is rotten to the core.
Great @realclimate post on problems using sea-ice volume data to predict ice-free Arctic timing. More evidence this blog is a vital touchstone for those pursuing climate reality in a hype-focused online information environment.
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