Sentences with phrase «present changes in surface temperature»

That illustrates my point, which is that present changes in surface temperature is not a good indicator of what we should expect in the future, and as such, it is not a great idea to make the debate about the observed ocean temperature.

Not exact matches

The climate change «hockey stick» is a graph first published in 1998 by Michael Mann et al. that attempted to reconstruct the mean surface temperature on the planet during the period A. D. 900 to the present, using multiple proxies, such as tree rings, to measure temperatures before formal instrumentation was in use.

We present a new modeling system that predicts both internal variability and externally forced changes and hence forecasts surface temperature with substantially improved skill throughout a decade, both globally and in many regions.

The substantial uncertainties currently present in the quantitative assessment of large - scale surface temperature changes prior to about A.D. 1600 lower our confidence in this conclusion compared to the high level of confidence we place in the Little Ice Age cooling and 20th century warming.»

Your earlier # 182 was equally disconcerting where you quoted Norris and Slingo (2009) saying «At present, it is not known whether changes in cloudiness will exacerbate, mitigate, or have little effect on the increasing global surface temperature caused by anthropogenic greenhouse radiative forcing.»

A conceptual model is presented where, through a number of synergistic processes and positive feedbacks, changes in the ultraviolet / blue flux alter the dimethyl sulphide flux to the atmosphere, and in turn the number of cloud condensation nuclei, cloud albedo, and thus sea surface temperature.

Consequently, as they say slightly earlier in the abstract: «At present, it is not known whether changes in cloudiness will exacerbate, mitigate, or have little effect on the increasing global surface temperature caused by anthropogenic greenhouse radiative forcing.»

Present estimates are that limiting the increase in global average surface temperature to no more than 2 — 2.5 °C above its 1750 value of approximately 15 °C will be required to avoid the most catastrophic, but certainly not all, consequences of climate change.

Here we show that accounting for recent cooling in the eastern equatorial Pacific reconciles climate simulations and observations.We present a novel method of uncovering mechanisms for global temperature change by prescribing, in addition to radiative forcing, the observed history of sea surface temperature over the central to eastern tropical Pacific in a climate model.

This change in sea level occurred in the context of different orbital forcing and with high latitude surface temperature, averaged over several thousand years, at least 2 °C warmer than present.

Yes, if the sentence is taken to refer to statistically significant change in surface temperature up to present.

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.

The idea is, if the change in surface temperature over that period is affected by changes in cloud cover, but changes of the surface temperature associated with the ocean warming are small, then changes in cloud cover must be driving the present global warming.

If there is deep - water formation in the final steady state as in the present day, the ocean will eventually warm up fairly uniformly by the amount of the global average surface temperature change (Stouffer and Manabe, 2003), which would result in about 0.5 m of thermal expansion per degree celsius of warming, calculated from observed climatology; the EMICs in Figure 10.34 indicate 0.2 to 0.6 m °C — 1 for their final steady state (year 3000) relative to 2000.

The map below presents the estimated change in average surface air temperature for 2014 relative to the thirty - year average from 1981 to 2010.

No one knows when the present plateau in the mean surface air temperature will end nor whether the change will be warmer or cooler.

«We present a new modeling system that predicts both internal variability and externally forced changes and hence forecasts surface temperature with substantially improved skill throughout a decade, both globally and in many regions.

The scatter diagrams described and presented on these pages depict projected changes in seasonal surface air temperature and precipitation for three 30 - year periods (2010 - 2039, 2040 - 2069 and 2070 - 2099) relative to the baseline period 1961 - 1990 in 32 sub-continental scale regions (see below).

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).

Although historical records indicate that atmospheric CO2 concentrations and sea surface temperatures have undergone significant oscillations and have exceeded present - day levels in the past [3,4], it is the unprecedented rates of change that are fuelling concerns over whether organisms will retain the capacity to mediate vital ecosystem functions and services [5,6].

We present a novel method of uncovering mechanisms for global temperature change by prescribing, in addition to radiative forcing, the observed history of sea surface temperature over the central to eastern tropical Pacific in a climate model.