Sentences with phrase «cold glacial times»

Not exact matches

The last glacial period spanned from 110,000 to 10,000 years ago; during that time the Earth was colder and glaciers covered significantly more land.

«They were living in the glacial environment of Europe, colder than it is today, for most of the time,» he says.

The research team also assessed whether climate sensitivity was different in warmer times, like the Pliocene, than in colder times, like the glacial cycles of the last 800,000 years.

For example, atmospheric carbon dioxide grew by approximately 30 % during the transition from the most recent cold glacial period, about 20,000 years ago, to the current warm interglacial period; the corresponding rate of decrease in surface ocean pH, driven by geological processes, was approximately 50 times slower than the current rate driven largely by fossil fuel burning.

By extrapolating from its radiative forcing in the current climate, we estimate that dust reduces precipitation during glacial times by as much as half the reduction due to the colder climate alone.

The radiation hypothesis beloved by IPCC is not fitting the observations; not for the last 14 years, and not for the past, considering the known warm and cold periods in the past (including glacial and interglacial times).

75 During glacial time (and perhaps during the cold flips as well), the tropics were less wet than now — but some desert regions such as Nevada were less dry.

Even on the Siberian continental margin, where water temperatures are colder than the global average, and where the sediment column retains the cold imprint from its exposure to the atmosphere during the last glacial time 20,000 years ago, any methane hydrate must be buried under at least 200 m of water or sediment.

The increased atmospheric dust load during glacial times is thought to be due to a generally colder and drier atmosphere, which increased the number and strength of dust sources through reduced vegetation cover (28), and reduced washout of suspended particles during transport (7).

«The time span of the last 130,000 years has seen the global climate system switch from warm interglacial to cold glacial conditions, and back again.

So for the past 3 million years the average temperature of the earth hasn't been the warmish 15C of the past 10,000 years of interglacial period but rather the brutal cold 3C of the glacial periods which last ten times as long as the interglacials.