Tag Archives: peru

SH Proxies: Peru d18O

Apr 1, 2014 – 8:20 PM

One of the hidden assumptions of proxy reconstructions, as carried out by IPCC authors, is that each “proxy” has a linear relationship to temperature plus relatively low-order red noise. Under such circumstances, the noise will cancel out in a linear combination of proxies (reconstruction) and a “signal” will emerge. However, I’ve never seen any author […]

By Stephen McIntyre | Posted in Uncategorized | Also tagged , , | Comments (33)

Alkenone Divergence in Peru

Apr 9, 2013 – 6:03 PM

Gutierrez et al (GRL 2011) pdf here; data here is another very high resolution alkenone series that is well-dated in the 20th century. It was taken in an upwelling zone offshore Peru at a similar latitude to Quelccaya. Like the high-resolution series offshore Morocco and Namibia, it shows a sharp decline in alkenone-estimated SST in […]

By Stephen McIntyre | Posted in Ocean sediment, Proxies, Uncategorized | Also tagged , , , , , | Comments (35)

Berkeley “Very Rural” Data

Dec 20, 2011 – 11:35 PM

Richard Muller sent me the BEST list of “very rural” sites – see http://www.climateaudit.info/data/station/berkeley. I took a quick look at the “very rural” stations in two tropical countries – Peru and Thailand – in order to groundtruth their classification methodology. These two examples were chosen because several years ago, I looked at Hansen’s “rural” Peru […]

By Stephen McIntyre | Posted in Uncategorized | Also tagged , | Comments (264)

Hansen's "Rural" Peru

Feb 25, 2008 – 1:10 PM

Hansen’s downward adjustments of Peruvian temperature records by as much as 3 deg C is based on the presumptive quality of Peruvian “rural” sites. If one even spends 40 minutes examining the locations of these sites, any resemblance to rural USHCN sites disappears. In addition, the failure of NOAA and NASA to update their records […]

By Stephen McIntyre | Posted in Surface Record | Comments (186)

The Adjusters Visit Peru

Feb 24, 2008 – 3:42 PM

We have talked about finding Waldo for a while. Here are a few interesting graphics showing the Adjusters in Peru. Here are 4 stations where temperatures in the mid-20th century have been lowered by around 3 deg C. These are all reverse UHI effects. For all of the above graphics, I’ve plotted original monthly data […]

By Stephen McIntyre | Posted in GISTEMP, Surface Record | Comments (97)