Sentences with phrase «over time scales of decades»

I just go to the section where they get into discussing Arctic seabed methane in more detail, and the conclusion of that section is actually: «In summary, the ocean methane hydrate pool has strong potential to amplify the human CO2 release from fossil fuel combustion over time scales of decades to centuries.»

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).

It has to be close to stationary over the time scale of decades.

In summary, the ocean methane hydrate pool has strong potential to amplify the human CO2 release from fossil fuel combustion over times scales of decades to centuries.

Over a time scale of decades, however, a possible self - sustaining decomposition of Yedoma could occur before the end of this century (Khvorostyanov et al., 2008a, 2008b, 2008c).

Not exact matches

With over a decade of operations under its belt, the store has scaled to a considerable size reaching a c. 26 % CAGR for the period 2013 to 2017, grossing c. $ 42M in that time, and generating c. $ 13M in revenue over the past year alone.

If these rates continue, emissions of methane, a greenhouse gas 25 times more powerful than carbon dioxide on 100 - year time scales, will increase 4 percent over the next decade.

Results: Over time scales spanning at least a decade, the amount of sunlight that reaches the Earth's surface has varied.

We're also learning that natural variability is really important when we're looking over time scales of anywhere from the next year or two to even a couple of decades in the future.

At the very high end of the ability scale, the six members of the US team that won the 2015 International Math Olympiad — for the first time in over two decades — collectively enrolled in over 40 AoPS classes.

The silver lining i see here is invaluable experience creating and managing projects of the size and scale o XcX... The evolution of a long long long overdue open world design that finally does nt rely on «potato world» land / space / time compression (the hardware technology has been capable for over a decade...) This experience seems to have paid off in spades with monolithsofts work on the new Zelda being a clear show stopper.

Back in 2001, Peter Doran and colleagues wrote a paper about the Dry Valleys long term ecosystem responses to climate change, in which they had a section discussing temperature trends over the previous couple of decades (not the 50 years time scale being discussed this week).

Both the NAO and the AMOC have a dominant influence on regional variations over Europe on time scales of a decade [1].

«While the one - time computation of the momentum and mass balance equations is readily justified for a snapshot in time, the use of a steady state energy equation may be inaccurate, because thermomechanical transients induced by CHW persist over time scales of the order of one to three decades [Phillips et al. 2010].

BartH notes that «At relatively short time scales (say, a couple of decades), natural variability will dominate over systematic climate change, and there is more added value to expect from ensuring that the projections reflect natural variability adequately than to assess the degree to which the background climate changes.»

Recent work (e.g., Hurrell 1995, 1996; Thompson and Wallace 1998; Corti et al., 1999) has suggested that the observed warming over the last few decades may be manifest as a change in frequency of these naturally preferred patterns (Chapters 2 and 7) and there is now considerable interest in testing the ability of climate models to simulate such weather regimes (Chapter 8) and to see whether the greenhouse gas forced runs suggest shifts in the residence time or transitions between such regimes on long time - scales.

Imo local and regional models that can accurately forecast what matters to humans for policy (rainfall, temperature, storms, etc.) over time scales of a few days to one or two decades is critical.

At the same time, if emissions reductions are too modest over the coming two decades, it may no longer be possible to reach a goal of 450 ppm CO2eq by the end of the century without large ‐ scale deployment of carbon dioxide removal technologies.

During this period, the rate of this rise has varied on multidecadal time scales making identifying exact reasons behind upswings, such has been observed over the past few decades, difficult.

In contrast to conventional estimates of a multicentennial time scale, this link is established over only four decades through the action of internal waves.

It is only over the longer time scales (decades) that the additional predictability that comes from external drivers of climate change (for instance, carbon dioxide, air pollution and ozone depletion) can start to be useful — but that's another post.

Several analyses of ring width and ring density chronologies, with otherwise well - established sensitivity to temperature, have shown that they do not emulate the general warming trend evident in instrumental temperature records over recent decades, although they do track the warming that occurred during the early part of the 20th century and they continue to maintain a good correlation with observed temperatures over the full instrumental period at the interannual time scale (Briffa et al., 2004; D'Arrigo, 2006).

Honorable scientists with respect for the principles of the scientific method admit that even on a human scale the Earth has not warmed to any significant degree at over the last seventeen years going on two decades, during which time CO2 increased.

The impact of land use change on the energy and water balance may be very significant for climate at regional scales over time periods of decades or longer.

In addition, time scales matter here — increasing the amount of CO2 by 33 % over the course of a few decades would overwhelm any system (like the Earth's climate) that has a time constant of centuries.