But Professor Briffa said using data such as magnesium content in shells, otherwise known as "proxy data", over long periods raised a number of potential problems.
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According to proxy data, storminess indices in Sweden from 1860-1890 were also higher.
There are other well known proxy data issues that need careful thought...
How a model that is only given past forcing histories can be better than some proxy data is beyond me, but Hans seems to believe this.
They then used that proxy data, which they dubbed the Paleo Index (PI) and compared it to the merged land-ocean surface temperature (MLOST) records developed by the National Climactic Data Center.
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We propose a readily available proxy: satellite data on lights at night.
Data on competitive pay practices has essentially become a commodity, with size and industry-specific data being accessible to most consultants, not to mention the fact that a tremendous amount of data can be gleaned from proxy reports.
Likewise, compressed data would be sent back to the proxy, which would expand and deliver standard HTTP to the browser, just as it would normally expect.
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The Forbes revenue figures are a year old because we have yet to compile 2010 data, but still serve as a good proxy for future revenue for the vast majority of teams.
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Mr Owen uses monthly data for productivity growth in manufacturing, a good proxy for the traded-goods sector.
According to Towers Perrin, a consultancy, data from American firms that had filed their 2008 proxy statements by the end of March show that, although median base-salaries rose slightly, the median annual bonus fell by 19%.
Two pioneers of the Health At Every Size approach, psychologist Deb Burgard and health promotion expert Lily O'Hara, analyze existing data to point out that using BMI as a proxy for metabolic health mislabels 51% of healthy people as unhealthy.
By combining the data with traffic fatalities we feel our list offers a proxy for safety.
Data going back further than a century or two is derived from "proxy" indicators such as tree-rings and stalactites which, again, are subject to large errors.
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Lurking within this new software update is a data compression feature powered by Chrome for Android's recently uncovered SPDY-powered proxy boost.
The researchers relied on insurance premium data supplied by Marsh from 2008 to 2011, which they said provided a good proxy for overall liability costs.
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Proxy temperature reconstructions require careful scrutiny because the proxies are not direct temperature measurements, but represent other data and factors that may or may not have a close correlation with past temperatures.
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