Sentences with phrase «scale of decades»

If we ignore a few bumps with time scales of a decade or so, the curve is surprisingly well fit by a pure exponential.

On the time scales of decades to centuries, however, most of the known chemical feedbacks are positive.

Any «scientist» who predicts climate on scales of decades with any meaningful level of certainty based on their laughably simplistic models is a charlatan.

Because most environmental challenges emerge on scales of decades and centuries, population growth packs a long - term wallop.

Not great, but the carbon has to first be removed by those plants (either very short term or on a scale of decades or centuries) before burning them can put it back into the atmosphere.

Franklin said the research underscores what might happen to threatened species in the future, with rapid climate change happening on a scale of decades rather than millennia.

«These new findings help us understand how the global climate system works over scales of decades to millennia and give us a new perspective from the distant past on recent and future climate changes.»

«Every day in cities, there are going to be choices made that affect plans on the scale of decades to centuries,» she said.

Geothermal heat emanating from deeper layers of the Earth does contribute a small amount to ocean warming but, on the time scale of decades & centuries, this contribution is effectively constant as it is determined by the rate of radioactive decay.

I do think it's on the scale of decades.

Deep steric changes occur over time scales of decades or longer and aren't expected to explain the discrepancy over the last 5 years (Antonov 2005).

Such clean energy schemes and improved agricultural and forestry practices are likely to be more economic than direct air capture of CO2, but they must be carefully designed to minimize undesirable impacts and the amount of CO2 that can be extracted on the time scale of decades will be limited, thus emphasizing the need to limit the magnitude of the cleanup task.

Climate evolution is discontinuous at the scale of decades and longer.

But on the scale of decades to a century, the dynamics of ice sheets whose disintegration would determine that outcome remain beyond clear human understanding.

One lesson, discussed by me for many years, is that short - term variability even on the scale of a decade (in either the hot or not hot direction) is a distraction if one is looking for evidence of human - driven warming or trying to build an argument for or against curbing emissions of greenhouse gases.

The draft notes that despite the relentless build - up of greenhouse gases in the atmosphere, the rate of warming over the past 15 years has been small compared with warming between 1951 and 2012, suggesting that within an overall warming that began in the first decade of the 1900s, the climate system still displays substantial variability on time scales of a decade or so.

Large climate fluctuations on time - scales of decades to centuries have long been known to occur during ice - ages, presumably due to sudden surges or collapses of the massive ice sheets.

Therefore, the processes of accumulation and ablation are the physical link between glaciers and climate, which explains why these ice bodies are such valuable tracers of climate variability on the scale of decades and centuries.

The interaction of ocean circulation, which serves as a type of heat pump, and biological effects such as the concentration of carbon dioxide can result in global climate changes on a time scale of decades.

«A one dimensional model of heat conduction is used to show that surface trends are attenuated as a function of depth within conductive media on time scales of decades to centuries, therefore invalidating the above assumption given practical observational constraints.

Although a significant factor in global climate on the scale of decades — the Pacific Ocean modes are part of a global climate system that is variable at many scales in time and space.

Although there are considerably many complexities to be considered, the main elements are the climate - change debate are captured in the proposition: Climate - change induced by CO2 is comparable to ozone destruction induced by CFCs, except that ozone destruction happens on a time - scale of decades, whereas climate - change happens on a time - scale of centuries.

This is to fast to matter for climate change which happens on the scale of decades.

As mentioned in the Introduction, the observed NAO exhibits prominent low - frequency variability on time scales of decades and longer.

Because of its impact on global temperature, ENSO can cause large fluctuations of the global temperature trend on time scales of a decade or even longer.

But there's a lot of physical and economic inertia in the climate system and any trend bending on a scale of a decade or two is likely to be small.

The petition reads in part: «Studies of a variety of natural processes, including ocean cycles and solar variability, indicate that they can account for variations in the Earth's climate on the time scale of decades and centuries.

The change is caused by realization that «slow» feedback processes, such as ice melt and release of greenhouse gases by the soil and ocean in a warming climate, can occur on the time scale of decades and centuries.

connection of the sea ice loss to a massive release of methane hydrates into the atmosphere on the time scale of a decade

These cycles led to a natural changeover between dry and wet phases on a scale of decades.

Such clean energy schemes and improved agricultural and forestry practices are likely to be more economic than direct air capture of CO2, but they must be carefully designed to minimize undesirable impacts and the amount of CO2 that can be extracted on the time scale of decades will be limited, thus emphasizing the need to limit the magnitude of the cleanup task.