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Yale study: Forest emissions, wildfires explain why ancient Earth was so hot

By Guest PostFebruary 7, 2014Environment704 node cluster, aerosol particles, ancient atmospheric level, ancient earth, arabian peninsula, carbon dioxide, climate scientists, co2 concentration, co2 emission, earth, earth system model, forest emissions, hot, methane, model e2, nadine unger, omega supercomputer, ozone, pliocene, pre industrial climate, radiation balance, volatile organic compound, wildfires, yale study, yale university

The release of volatile organic compounds from Earth’s forests and smoke from wildfires 3 million years ago had a far greater impact on global warming than ancient atmospheric levels of carbon dioxide, a new Yale study finds.

The research provides evidence that dynamic atmospheric chemistry played an important role in past warm climates, underscoring the complexity of climate change and the relevance of natural components, according to the authors. They do not address or dispute the significant role in climate change of human-generated CO2 emissions. (more…)

Confidence in Climate Data: Using 3 Million-Year-Old Records

By Guest PostMarch 20, 2012Uncategorized21st century, ar5, atmospheric co2, China, climate, climate conditions, fossils, france, geologic period, Germany, global warmth, ipcc, Japan, marci robinson, marcia mcnutt, million years, north atlantic climate, north atlantic data, norway, pliocene, pliocene conditions, pliocene temperature, pliomip, test models, trace gases, united kingdom, united states, university of bristol, university of leeds

How do we understand what’s happening today by looking back millions of years?

Scientists are looking at what climate conditions were like 3.3 to 3 million years ago, during a geologic period known as the Pliocene, and they are confident in the accuracy of their data.

The Pliocene is the most recent period of sustained global warmth similar to what is projected for the 21^st century. Climate during this time period offers one of the closest analogs to estimate future climate conditions. (more…)

‘Arctic Climate May be More Sensitive to Warming than Thought’

By Guest PostJuly 6, 2010Environmentanthropogenic greenhouse, Arctic, ashley ballantyne, atmospheric, beaver pond site, british columbia, canada, carbon dioxide, dara finney, ecosystem, ellesmere island, geology, natalia rybczynski, permineralization, pliocene, strathcona fiord, vancouver

A new study shows the Arctic climate system may be more sensitive to greenhouse warming than previously thought, and that current levels of Earth’s atmospheric carbon dioxide may be high enough to bring about significant, irreversible shifts in Arctic ecosystems.

(more…)

Tag Archives: pliocene

Yale study: Forest emissions, wildfires explain why ancient Earth was so hot

Confidence in Climate Data: Using 3 Million-Year-Old Records

‘Arctic Climate May be More Sensitive to Warming than Thought’