Sentences with phrase «warmer intervals known»

Over the past two million years, Earth has experienced long glacial periods separated by short, warmer intervals known as interglacials.

Not exact matches

And it's possible that we are currently no warmer than we were a thousand years ago, during the «Medieval Warm Period» or «Medieval Optimum,» an interval of warm conditions known from historical records and indirect evidence like tree riWarm Period» or «Medieval Optimum,» an interval of warm conditions known from historical records and indirect evidence like tree riwarm conditions known from historical records and indirect evidence like tree rings.

The research, led by Chronis Tzedakis of University College, London, examined similarities between the current warm interval between ice ages and a particular point, around 780,000 years ago, during a past warm period known as Marine Isotope Stage 19.

«We also present a set of global vulnerability drivers that are known with high confidence: (1) droughts eventually occur everywhere; (2) warming produces hotter droughts; (3) atmospheric moisture demand increases nonlinearly with temperature during drought; (4) mortality can occur faster in hotter drought, consistent with fundamental physiology; (5) shorter droughts occur more frequently than longer droughts and can become lethal under warming, increasing the frequency of lethal drought nonlinearly; and (6) mortality happens rapidly relative to growth intervals needed for forest recovery.

The answer, Izen, is of course that when Obama held his «5 to 10 years global warming acceleration» speech, he had not the faintest idea that 5 years is a totally irrelevant interval when talking about decades long climate trends; and he doesn't have the faintest idea about that because he wouldn't know a physical unit if it crawled up his nose and died there.A trend over 5 years is not much better than noise, and detecting an ACCELERATION with such a noisy trend is entirely impossible.

When this is done, people usually find that while it was relatively cool in global mean temperatures from the 1400s to the 1800s known as the «Little Ice Age» and relatively mild in the 900s to 1300s interval (sometimes termed the «Medieval Warm Period»).

Note that now we are no longer considering the entire history of the earth, we are only considering the changes in magnitude during the modern warming interval.

CO2 better than HFC Instead of HFC, the machines use CO2, which in this case they estimate to be 1,300 times less potent a greenhouse gas than HFC (over a certain interval of time, the measurement is also known as GWP, or global warming potential).

I'd like to know if both global warming & global cooling are concurrent, and the only difference between an Ice Age and an Interglacial are which one is winning more than the other one at any given time interval, right down to year - by - year.