Abtract: 2500 Years of European Climate Variability and Human Susceptibility | Science/AAAS
Climate variations have influenced the agricultural productivity, health risk, and conflict level of preindustrial societies. Discrimination between environmental and anthropogenic impacts on past civilizations, however, remains difficult because of the paucity of high-resolution palaeoclimatic evidence.
Here, we present tree ring–based reconstructions of Central European summer precipitation and temperature variability over the past 2500 years.
Recent warming is unprecedented, but modern hydroclimatic variations may have at times been exceeded in magnitude and duration.
Wet and warm summers occurred during periods of Roman and medieval prosperity. Increased climate variability from ~AD 250 to 600 coincided with the demise of the Western Roman Empire and the turmoil of the Migration Period. Historical circumstances may challenge recent political and fiscal reluctance to mitigate projected climate change.
The archaeologists used tree rings to make this determination.
Archaeologists have developed oak ring width chronologies from Central Europe that cover nearly the entire Holocene and have used them for the purpose of dating artefacts, historical buildings, antique artwork and furniture.
Right wingers have suggested the fall of the Roman empire occurred because Romans became weak on defence or the citizenry was apathetic. They were wrong!
source: http://www.sciencemag.org/content/early/2011/01/12/science.1197175
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Here, we present tree ring–based reconstructions of Central European summer precipitation and temperature variability over the past 2500 years.
Recent warming is unprecedented, but modern hydroclimatic variations may have at times been exceeded in magnitude and duration.
Wet and warm summers occurred during periods of Roman and medieval prosperity. Increased climate variability from ~AD 250 to 600 coincided with the demise of the Western Roman Empire and the turmoil of the Migration Period. Historical circumstances may challenge recent political and fiscal reluctance to mitigate projected climate change.
The archaeologists used tree rings to make this determination.
Archaeologists have developed oak ring width chronologies from Central Europe that cover nearly the entire Holocene and have used them for the purpose of dating artefacts, historical buildings, antique artwork and furniture.
Right wingers have suggested the fall of the Roman empire occurred because Romans became weak on defence or the citizenry was apathetic. They were wrong!
source: http://www.sciencemag.org/content/early/2011/01/12/science.1197175
Subscribe to the Rightardia feed: http://feeds.feedburner.com/blogspot/UFPYA
Netcraft rank: 6537 http://toolbar.netcraft.com/site_report?url=http://rightardia.blogspot.com
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