Sentences with phrase «previous warming»

In cold periods, the methane concentration was typically between 0.3 and 0.4 parts per million, whereas in previous warm periods it was 0.6 — 0.7 ppm.

He said it's not that simple, explaining that it's the relative ranking of probabilities of last year and previous warm years that leads to the conclusion that 2014 tops the list.

The null hypothesis is that whatever caused previous warm spells is operating now.

Scientists are learning about how previous warm periods altered sea levels, and what that past may tell us about the future.

Not only because all previous records show high CO2 levels have never driven Earths temperature but because previous warming events have all preceeded high CO2 levels by 400 to 1,400 years.

The lethargic response to previous warm weather breaks (and my own recollection of the first day back in the office after a week at the beach) does not instil the greatest confidence that today will see an up and at «em, all guns a-blazing display from the first whistle.

Also, I'm not sure I see strong support for this concluding sentence: «Although polar bears have persisted through previous warm phases, multiple human - mediated stressors (e.g., habitat conversion, persecution, and accumulation of toxic substances in the food chain) could magnify the impact of current climate change, posing a novel and likely profound threat to polar bear survival.»

The existence of the little ice age and the medieval warm period were an embarrassment to the global - warming establishment, because they showed that the current warming is almost indistinguishable from previous warmings and coolings that had nothing to do with burning fossil fuel.

We have evidence from the Greenland ice cores that previous warming spells (Minoan, Roman, Medieval) lasted for a short time, so from that point of view we have all reason to believe that the current warming is also just a short - lived warming spell, and that in the big 400 - year - smoothed picture, we're still on a long trip downwards to the next glaciation.

Do we know by how much CO2 concentrations increased during the similar previous warmings, such as the Roman and Medieval warm periods?

Also, his SST data (see our Fig. 2 above) go back to 1930, thus covering the whole previous warm phase of the AMO.

The fact that previous warmings with an atmospheric temperature some five degrees Celcius higher than now (eg Minoan, Roman, Medieval) were reversed is conveniently ignored as are the great climate cycles driven by the Sun, the Earth's orbit, tectonics and tides seen on modern, archaeological and geological time scales.

July 2016's temperature was a statistically small 0.1 degrees Celsius warmer than previous warm Julys in 2015, 2011 and 2009.

Those questioning the vulnerability of this species to warming will point to its successful survival through two previous warm intervals between ice ages as evidence the bear can deal with reduced ice and other big environmental shifts.

Joey Comiso, senior research scientist at Nasa's Goddard Space Flight Center, said this year's ice retreat was caused by previous warm years reducing the amount of perennial ice — which is more resistant to melting.

=== > The 2013 year - end per century trends (note the color arrows on chart's right axis) are well below previous warming trends

Jesper Theilgaard, a meteorologist with 40 years» experience and founder of website Climate Dissemination, said the recent trends are outside previous warming events.

It seems to me that this question might be testable by looking at whether deserts moved north in previous warm eras.

As the authors of this paper note, declines in the polar bear population likely recurred through previous warming periods, leading to bottlenecks, including the one that likely preceded the hybridization event with grizzly bears.

In previous warm periods, it was not a CO ₂ spike that kickstarted the warming, but small and predictable wobbles in Earth's rotation and orbit around the Sun.

Today I'm taking a look back at some previous warmer weather looks and sharing my top 10 favorite outfits for summer.

That bests the previous warmest January - June in 1934 by 1.1 °F — a substantial difference, said Jake Crouch, a climate scientist with NOAA's National Climatic Data Center.

It beat out the previous warmest March, from 2010, by 0.65 °F (0.36 °C)-- a handy margin.

For the year - to - date, 2015 is 1.53 °F above the 20th century average, and 0.16 °F ahead of 2010, which had the previous warmest January through July.

The rest of the stations (70 %) don't or just reach the temperatures of the previous warm period.

That summer (June to August) was the hottest since comparable instrumental records began around 1780 (1.4 °C above the previous warmest in 1807) and is very likely to have been the hottest since at least 1500.

I realize that Gavin is writing for fellow climate researchers rather than such as I who only have a medical doctorate, but surely there is some language, Gavin, that could more clearly, in plain English, describe what his objections, in the main, are, to those who raise some doubts as to the long - term climate record and what may have caused previous warmings.