Recent summer temperatures in Europe are likely the warmest of the last two millennia, study shows

January 28, 2016, Institute of Physics
Credit: NASA

Most of Europe has experienced strong summer warming over the course of the past several decades, accompanied by severe heat waves in 2003, 2010 and 2015. New research now puts the current warmth in a 2100-year historical context using tree-ring information and historical documentary evidence to derive a new European summer temperature reconstruction.

The work was published today in the journal of Environmental Research Letters by a group of 45 scientists from 13 countries.

Warm summers were experienced during Roman times, up to the 3rd century, followed by generally cooler conditions from the 4th to the 7th centuries. A generally warm medieval period was followed by a mostly cold Little Ice Age from the 14th to the 19th centuries. The pronounced early in the 20th century and in recent decades is well captured by the tree-ring data and historical evidence on which the new reconstruction is based.

The evidence suggests that past natural changes in summer temperature are larger than previously thought, suggesting that may underestimate the full range of future extreme events, including heat waves. This past variability has been associated with and changes in the amount of energy received from the sun.

The new research finding that temperatures over the past 30 years lie outside the range of these natural variations supports the conclusions reached by the International Panel on Climate Change (IPCC) that recent warming is mainly caused by anthropogenic activity.

"We now have a detailed picture of how temperatures have changed over Europe for more than two thousand years and we can use that to test the climate models that are used to predict the impacts of future global warming," says the coordinator of the study, Professor Jürg Luterbacher from the University of Giessen in Germany.

Explore further: Climate in northern Europe reconstructed for the past 2,000 years

More information: Luterbacher J et al. 2016: European summer temperatures since Roman times. Environmental Research Letters 11, 024001, DOI: 10.1088/1748-9326/11/1/024001

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5 comments

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philstacy9
1.7 / 5 (11) Jan 28, 2016
Global warming is a selfie of progressive propaganda.
marcush
3.8 / 5 (11) Jan 29, 2016
Global warming is a selfie of progressive propaganda.


You can keep telling yourself that every night but but its not going to change reality.

gkam
3.5 / 5 (8) Jan 29, 2016
Them ole hippies done us in by changing all them thermo-meters all over the world to make us think things are getting warmer.

Really.

I got it from smart guys like the Koch Brothers.
Bongstar420
2 / 5 (4) Jan 30, 2016
Not any data?

The article would do better simply to print the data
Vietvet
5 / 5 (5) Jan 30, 2016
PO doesn't do data. The link at the bottom of the article is broken but it took me about 5 seconds to find the open access paper---and the data.

http://iopscience...2/024001

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