Sentences with phrase «near present temperatures»
[Response: For anything near present temperatures, WV increases at roughly 7 % per ºC and the feedback is tied to this — hence the size of the feedback doesn't vary a lot the absolute global mean temperature.
http://www.realclimate.org/ Not exact matches
Professor Drijfhout said: «The planet earth recovers from the AMOC collapse in about 40 years when global warming continues at present - day rates, but near the eastern boundary of the North Atlantic (including the British Isles) it takes more than a century before temperature is back to normal.»
With an eye to the future — in terms of both energy costs and environmental considerations — the education authority opted for a system utilising the heat always present at a more or less constant temperature in the «near - surface geothermal layer» underground.
My impression is that if you take North Atlantic temperatures, detrend them, and call the remainder the temperature signal of the AMO, then we are near a positive peak at present.
Finally, the presence of vigorous climate variability presents significant challenges to near - term climate prediction (25, 26), leaving open the possibility of steady or even declining global mean surface temperatures over the next several decades that could present a significant empirical obstacle to the implementation of policies directed at reducing greenhouse gas emissions (27).
But as illustrated in the figure below, simply extrapolating this correlation forward in time puts the Antarctic temperature in the near future somewhere upwards of 10 degrees Celsius warmer than present — rather at the extreme end of the vast majority of projections (as we have discussed here).
If there happened to be a natural temperature cycle which was at a minimum in 1861 and near a maximum at present, then plotting out temperatures over this time period and drawing a straight line through them could give a misleading impression of the trend.
A sevenfold increase of the present normal carbon dioxide concentration increases the temperature near the ground by approximately one degree.
To be clear Bart, Mike, s paper was about the phase and amplitude of the AMO and, and by his understanding, this may be different than conventional understanding, and how this affects the present temperature today as well as the near future.
«Finally, the presence of vigorous climate variability presents significant challenges to near - term climate prediction (25, 26), leaving open the possibility of steady or even declining global mean surface temperatures over the next several decades that could present a significant empirical obstacle to the implemen - tation of policies directed at reducing greenhouse gas emissions (27).
We present an analysis to illustrate why temperature values at specific levels will depend on wind speed, and with the same boundary layer heat content change, trends in temperature should be expected to be different at every height near the surface when the winds are light, as well as different between light wind and stronger wind nights.
About 3 million years ago, during the mid-Pliocene warm period, global temperatures were 2 ° — 3 ° warmer than present, and polar ice extents were about one third smaller, making this period interesting as a comparison to the near future.
We have two new entries to the long (and growing) list of papers appearing the in recent scientific literature that argue that the earth's climate sensitivity — the ultimate rise in the earth's average surface temperature from a doubling of the atmospheric carbon dioxide content — is close to 2 °C, or near the low end of the range of possible values presented by the U.N.'s Intergovernmental Panel on Climate Change (IPCC).
The third temperature proxy was based on a comparison of plant taxa present at the site (Matthews and Ovenden, 1990) with nearest living relatives and their climatic ranges.