Sentences with phrase «occur over several decades»

However, this decline in growth will occur over several decades and may be offset by the millennial generation starting households of their own.

Most climate models examine environmental changes as they occur over several decades or centuries, encompassing greenhouse gas emissions from a multitude of sources.

In other words, climate change includes major changes in temperature, precipitation or wind patterns that occur over several decades or longer.

Not exact matches

Several large severe wildfires have occurred in the state over the past decade, leading some to hypothesize that the beetle's destructive spread may be a contributing factor.

In the past several decades, scientists have discovered that the North — South distributions of certain plants often result from a single jump across the tropics, not as a result of gradual movements or events that occurred over a hundred million years ago.

Much of this change has occurred over the last several decades indicating that the warming trend accelerated over the 1925 — 2016 period.

Attempts to reinvent high school have occurred regularly over the past several decades.

Qatari - American artist, writer, and filmmaker Sophia Al - Maria (b. 1983) has brought her global perspective to the dramatic transformations occurring in the Arabian Gulf over the last several decades.

The observed global greening has occurred in spite of all the many real and imagined assaults on Earth's vegetation that have occurred over the past several decades, including wildfires, disease, pest outbreaks, deforestation, and climatic changes in temperature and precipitation, more than compensating for any of the negative effects these phenomena may have had on the global biosphere.

One reason for this is that many impacts of climate change are expected to be proportional to the amount of global average warming that occurs over the next several decades to centuries.

Once the risk to demand from such a temperature increase is identified, can we assess the probability, or less stringently, the plausibility, of such an increase occurring over the next several decades?

There is no doubt, that these observations are associated with the climate change which has been shown to occur since several decades, and which, over the last years, has had important consequences for fisheries: decrease of catches, northwards shift of fishing grounds, adaptation to fisheries for different species.

In recent years, many have expressed concerns that global terrestrial NPP should be falling due to the many real (and imagined) assaults on Earth's vegetation that have occurred over the past several decades — including wildfires, disease, pest outbreaks, and deforestation, as well as overly - hyped changes in temperature and precipitation.

Most of the projected increase in the world's population over the next several decades is expected to occur in urban centres of low - income regions.

It is therefore difficult to see how the Intergovernmental Panel on Climate Change (the IPCC) can maintain there is a 95 per cent probability that human emissions of carbon dioxide have caused most of the global warming that has occurred over the last several decades (4).

There are two prominent and undeniable examples of the models» insufficiencies: 1) climate models overwhelmingly expected much more warming to have taken place over the past several decades than actually occurred; and 2) the sensitivity of the earth's average temperature to increases in atmospheric greenhouse gas concentrations (such as carbon dioxide) averages some 60 percent greater in the IPCC's climate models than it does in reality (according to a large and growing collection of evidence published in the scientific literature).

All of the above is background to one of the great mysteries of the climate change issue... how the Intergovernmental Panel on Climate Change (the IPCC) can maintain there is a 95 per cent probability that human emissions of carbon dioxide have caused most of the global warming that has occurred over the last several decades (4).

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).