Sentences with phrase «most previous estimates»

Most previous estimates of the magnitude of unforced variability have come from physical climate models.

However, this lower estimate could mostly be attributed to Schmittner et al.'s low estimate of the glacial - interglacial temperature change, of just 2.6 °C globally (most previous estimates put the value at around 5 °C).

With this data, the WMAP research team calculated that the universe is 13.7 billion years old (plus or minus 1 percent) and determined that the first stars appeared 200 million years after the Big Bang, far earlier than most previous estimates.

That is two grades earlier than most previous estimates.

Scientists found global climate is more sensitive to carbon dioxide than most previous estimates.

Ancient DNA derived from a horse fossil that's between 560,000 and 780,000 years old suggests that all living equids — members of the family that includes horses, donkeys, and zebras — shared a common ancestor that lived at least 4 million years ago, approximately 2 million years earlier than most previous estimates.

«Our most conservative estimates of the global volume of the Martian valley networks and the cumulative amount of water needed to carve those valleys are at least 10 times greater than most previous estimates,» Luo said.

A fascinating new paper makes a strong case, using new genetic clues, that polar bears have been around a lot longer, and thus endured more climate vagaries, than most previous estimates.

They fitted a simple (ish) climate model to these most recent and comprehensive proxy syntheses, and came up with a global mean temperature anomaly of only 3C (with an uncertainty range of 1.7 - 3.7 C), which is far milder than most previous estimates.

So that is a bit colder than Schmittner et al estimated, but also substantially warmer than most previous estimates.

Not only is this a substantial quantity of product vanishing into the air (natural gas is primarily methane), it is also significantly higher than most previous estimates — including from industry — and would reduce or eliminate any advantage natural gas has over coal from a climate standpoint.