Sentences with phrase «than natural variability»

But the warming was still much higher than natural variability and observational uncertainty combined, leaving human CO2 emissions as the likely culprit.
They have no idea what caused the hiatus, but they have no explanation available other than natural variability.
Even if CO2 has a global warming effect it may well be far smaller than natural variability.
The researchers, from the University of Reading and University of Iowa, found that large parts of the projected changes in AR frequency and intensity would be down to thermodynamic changes in the atmosphere, rather than the natural variability of the climate, suggesting that it is a response to anthropogenic climate change.
Therefore, knowledge on the Time of Emergence (ToE), or the years that the human contributions to climate change will become more important than natural variability in causing heat waves, is crucial for better mitigation and adaptation efforts.
Thus Curry is incorrect; even over a timeframe as short as the past two decades, the human - caused global surface warming signal has been larger than the natural variability of the global climate system.
Furthermore his forecast of no warming larger than natural variability during the next century has proven accurate so far — after 23 years have elapsed (see here for the latest of 3 posts about the «pause» in warming).
Polyak et al. (2010) looked at Arctic sea ice changes throughout geologic history and noted that the current rate of loss appears to be more rapid than natural variability can account for in the historical record.
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.
Spracklen and Garcia - Carreras show through their analysis that deforestation has reduced rainfall, but the reduction is currently smaller than the natural variability in the system.
Might it be speculated that a change in ENSO (more frequent La Niñas) is an aspect of global warming, rather than natural variability?
Still smaller, to be sure, than natural variability, but certainly not nothing, when once considers that that each degree c represents a 15 - 20 mph increase in potential hurricane strength.
In reality we've seen about 0.5 — 0.6 °C of warming above mid-20th Century temperature, so perhaps at the 5σ level or 99.9 % confidence that the warming is due to external forcing (principally CO2) rather than natural variability.
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