Sentences with phrase «natural warming rate»

... there exists a maximum natural warming rate at or below for which no one should have any objection.

Not exact matches

While natural patterns of certain atmospheric and ocean conditions are already known to influence Greenland melt, the study highlights the importance of a long - term warming trend to account for the unprecedented west Greenland melt rates in recent years.

By the way, in my opinion, the elevated greenhouse gas levels already in the air, combined with the future emissions from machines already built, plus increased natural emissions from carbon sinks becoming carbon emitters (i.e. permafrost melting) will cause the rate of warming to top 0.4 C / decade by mid-century.

Regardless of how much warming is natural vs anthropogenic, if the warming rate is half, one - third, or an even smaller fraction over the past 25 yrs than you have been led to believe it was, would that not be cause for serious reflection?

Since the warming rate is twice as fast as the interglacial cooling rate, the typical interglacial period has an asymmetrical pattern suggesting Earth heats up due to natural processes more rapidly than when it cools.

The Arctic is in danger — it's warming at twice the rate of the rest of the Earth, and offshore oil and gas exploration are threatening its pristine natural habitats.

Is it not the case that if the relative lack of El Niño's and predominance of La Nina's is in fact due to global warming, rather than natural variability, then the current increase in the rate of warming of the ocean below 700m may continue.

Further, since you agree with us that the warming rate during the next several decades will be below 0.325 ºC / decade, then, as I have pointed out, due to the level of natural variability, a 20 - yr time period is too short to really differentiate between your beliefs and ours (if there exist any).

The past decade, at the very least, has not seem the same rate of warming as the previous two decades (all natural variability such as ENSO accounted for).

There are uncertainties in the rate at which it might warm, and the natural variation in the climate system means it will not be a smooth warming.

I know you have to be cautious but isn't this a strong indication that the lower rate of surface and lower troposphere warming in recent years is due to natural unforced variability rather than climate forcings?

However, although the Arctic is still not as warm as it was during the Eemian interglacial 125,000 years ago [e.g., Andersen et al., 2004], the present rate of sea ice loss will likely push the system out of this natural envelope within a century.

For policy - makers, the speed of climate change over the coming decades matters as much as the total long - term change, since this rate of change will determine whether human societies and natural ecosystems will be able to adapt fast enough to survive.New results indicate a warming rate of about 2.5 C per century over the coming decades (assuming no attempt is made to reduce GHG emissions).

It is certainly a legitimate concern to raise that late 20th century warming (which has now ceased) might have occurred at a rate faster than normal natural variability.

The authors conclude that the there is a higher retreat - rate for marine terminating glaciers in the recent warm period; in the 1930s when there is a natural mode of variability active that caused regional temperatures around Greenland to be anomalously warm, there was a higher retreat rate for land - terminating glaciers (the lower retreat rate today is in part because they are currently smaller).

The underlying issue is this: While the planet was subject primarily to natural changes, the different parts of the planet were warming and cooling at similar rates, thus the zonal anomalies run fairly parallel.

My own guess is that we don't need to wait for long to see some warming again, but reaching the maximal rate related to the next positive contribution of natural variability could take longer.

By Sreeja VN: Sizzling underwater glacial ice, as it melts into warmer sea water, creates one of the loudest natural marine environments, and the air bubbles that pop during the process could help scientists measure the rate of glacier melt and track fast - changing polar environments.

Particularly when this warming represents less than 50 % of the rate of natural climate variability that has been occurring for millennia.

It is almost certain that some fraction of that warming was completely natural, not due to human causes and we do not know that fraction — a reasonable guess would be to extrapolate the warming rate from the entire post LIA era, which is already close to 0.1 C / decade.

«Looking at 1,000 years of temperature records, researchers found that natural variability in surface temperatures over the course of just a decade can account for increases and dips in warming rates.»

Climate scientists Michael Oppenheimer and Kevin Trenberth also took issue with Koonin's assertion about the impact of human activity, saying, Warming is well beyond natural climate variability and projected rates of change are potentially faster than ecosystems, farmers and societies can adapt to without major disruptions.

Dana: «Climate scientists Michael Oppenheimer and Kevin Trenberth also took issue with Koonin's assertion about the impact of human activity, saying, Warming is well beyond natural climate variability and projected rates of change are potentially faster than ecosystems, farmers and societies can adapt to without major disruptions.

What matters is not the warming rate since the mid-19th century but the fact that ice core data reveal the existence of a quasi-millenarian (natural) oscillation, that well correlates with observed (mean) warming observed since the mid-19th century.

Claim: «Lewandowsky et al regard research into natural variability as «entertaining the possibility that a short period of a reduced rate of warming presents a challenge to the fundamentals of greenhouse warming.»

Surface warming from natural and anthropogenic factors may increase or decrease the rate of sea level rising, but only slightly.

''... sea levels have indeed increased, which probably is a sign of warming... it is difficult to attribute the current rate of rise... to humans when we don't know how much of the rise is natural.»

But the rate of global surface warming can fluctuate due to natural variations in the climate system over periods of a decade or so.»

Natural variability plays a large role in the rate of global mean surface warming on decadal time scales.

And there still remains the problem with early 20th century warming which is virtually identical to late century warming in rate, magnitude and length, but axiomatically a natural phenomenon.

Yet its own temperature dataset proves past natural global warming rates of earlier periods are similar and as powerful.

Assume that some of the 0.4 K was quite natural and this is turning around — thus the rate of warming declines in 21st century from the 0.07 K / decades of the 1944 to 1998 period.

Expanding on the comparison of natural versus modern warming rates, the chart on the left plots various per - century trends for US temperatures ending February 1935 (red curve) versus those periods ending February 2016 (aqua curve).

NOAA is well known to aggressively push the misleading myth of a dangerous modern warming rate from CO2, and that this rapid warming can only be man - made, not a result of natural forces.

The climate models are still absolutely unable to discern either the amount or rate of global warming / cooling that is due to natural forces.

The distribution, cyclical pattern, rate, and extent of recent global warming are [fully / mostly / partially / not] consistent with natural variability in Earth's climate.

The near - linear rate of anthropogenic warming (predominantly from anthropogenic greenhouse gases) is shown in sources such as: «Deducing Multidecadal Anthropogenic Global Warming Trends Using Multiple Regression Analysis» «The global warming hiatus — a natural product of interactions of a secular warming trend and a multi-decadal oscillation» «The Origin and Limits of the Near Proportionality between Climate Warming and Cumulative CO2 Emissions» «Sensitivity of climate to cumulative carbon emissions due to compensation of ocean heat and carbon uptake» «Return periods of global climate fluctuations and the pause» «Using data to attribute episodes of warming and cooling in instrumental records» «The proportionality of global warming to cumulative carbon emissions» «The sensitivity of the proportionality between temperature change and cumulative CO2 emissions to ocean mixingwarming (predominantly from anthropogenic greenhouse gases) is shown in sources such as: «Deducing Multidecadal Anthropogenic Global Warming Trends Using Multiple Regression Analysis» «The global warming hiatus — a natural product of interactions of a secular warming trend and a multi-decadal oscillation» «The Origin and Limits of the Near Proportionality between Climate Warming and Cumulative CO2 Emissions» «Sensitivity of climate to cumulative carbon emissions due to compensation of ocean heat and carbon uptake» «Return periods of global climate fluctuations and the pause» «Using data to attribute episodes of warming and cooling in instrumental records» «The proportionality of global warming to cumulative carbon emissions» «The sensitivity of the proportionality between temperature change and cumulative CO2 emissions to ocean mixingWarming Trends Using Multiple Regression Analysis» «The global warming hiatus — a natural product of interactions of a secular warming trend and a multi-decadal oscillation» «The Origin and Limits of the Near Proportionality between Climate Warming and Cumulative CO2 Emissions» «Sensitivity of climate to cumulative carbon emissions due to compensation of ocean heat and carbon uptake» «Return periods of global climate fluctuations and the pause» «Using data to attribute episodes of warming and cooling in instrumental records» «The proportionality of global warming to cumulative carbon emissions» «The sensitivity of the proportionality between temperature change and cumulative CO2 emissions to ocean mixingwarming hiatus — a natural product of interactions of a secular warming trend and a multi-decadal oscillation» «The Origin and Limits of the Near Proportionality between Climate Warming and Cumulative CO2 Emissions» «Sensitivity of climate to cumulative carbon emissions due to compensation of ocean heat and carbon uptake» «Return periods of global climate fluctuations and the pause» «Using data to attribute episodes of warming and cooling in instrumental records» «The proportionality of global warming to cumulative carbon emissions» «The sensitivity of the proportionality between temperature change and cumulative CO2 emissions to ocean mixingwarming trend and a multi-decadal oscillation» «The Origin and Limits of the Near Proportionality between Climate Warming and Cumulative CO2 Emissions» «Sensitivity of climate to cumulative carbon emissions due to compensation of ocean heat and carbon uptake» «Return periods of global climate fluctuations and the pause» «Using data to attribute episodes of warming and cooling in instrumental records» «The proportionality of global warming to cumulative carbon emissions» «The sensitivity of the proportionality between temperature change and cumulative CO2 emissions to ocean mixingWarming and Cumulative CO2 Emissions» «Sensitivity of climate to cumulative carbon emissions due to compensation of ocean heat and carbon uptake» «Return periods of global climate fluctuations and the pause» «Using data to attribute episodes of warming and cooling in instrumental records» «The proportionality of global warming to cumulative carbon emissions» «The sensitivity of the proportionality between temperature change and cumulative CO2 emissions to ocean mixingwarming and cooling in instrumental records» «The proportionality of global warming to cumulative carbon emissions» «The sensitivity of the proportionality between temperature change and cumulative CO2 emissions to ocean mixingwarming to cumulative carbon emissions» «The sensitivity of the proportionality between temperature change and cumulative CO2 emissions to ocean mixing»

According to the researchers, natural variability plays a large role in the rate of global mean surface warming on decadal time scales.

«Causes of differences in model and satellite tropospheric warming rates» «Comparing tropospheric warming in climate models and satellite data» «Robust comparison of climate models with observations using blended land air and ocean sea surface temperatures» «Coverage bias in the HadCRUT4 temperature series and its impact on recent temperature trends» «Reconciling warming trends» «Natural variability, radiative forcing and climate response in the recent hiatus reconciled» «Reconciling controversies about the «global warming hiatus»»

«A reduction in the rate of warming (not a pause) is a result of short - term natural variability, ocean absorption of heat from the atmosphere, volcanic eruptions, a downward phase of the 11 - year solar cycle, and other impacts over a short time period,» Cleugh says.

As its impact on global warming is a significant one, natural causes are given a contribution rate of 50 %.

«Sure, they'll probably try to confuse us with trick questions: Like why, apart from natural 1998 and 2015 El Nino spikes, satellites haven't recorded any statistically significant global warming for nearly two decades; why sea levels have been rising at a constant rate of 7 inches per century without acceleration; and why no category 3 - 5 hurricanes have struck the U.S. coast since October 2005 — a record lull since 1900.

Furthermore, if the trend from 1910 to 1940 would have continued then it would have resulted in a natural warming at a rate that is something like 20 times faster than the rate that we recovered from the ice age.

I mean if after an Ice Age you can have large and thick glaciers receding at that rate of natural causes why is it so surprising that smaller glaciers in a warmer climate are receding.

«Because greenhouse gas concentrations are increasing at rates unprecedented for the past 800,000 years, human - caused warming will be superimposed on the «natural» trend,» he said.

My general view is that, while Stern's choice of discount rate is at the low end, the Review badly underestimates the social cost of the damage to natural ecosystems that will inevitably arise from global warming.

2 degrees Celsius per decade recorded by satellites during the late 20th century falls within known natural rates of warming and cooling over the last 10,000 years.

[23] An 2015 analysis by US government scientists in the journal Nature and Climate Change suggested that if temporary natural fluctuations were ignored then world was probably now warming at a rate of about 0.2 °C per decade — higher than the IPCC's longer - term average.

The world is still warming at a long - term rate of about half a degree per century, but it will reach a maximum within 50 years, then cool for nearly 500 years with superimposed 60 year natural cycles.

Model results now show natural variability will decrease in magnitude under warmer conditions, altering the mechanisms causing it and its influence on warming rates.