Sentences with phrase «climate over millions of years»

Plants are major contributors to the chemical weathering of continental rocks, a key process in the carbon cycle that regulates Earth's atmosphere and climate over millions of years.

The sediments contain extremely rich information about the climate over millions of years — including sea surface temperature.

Not exact matches

Inadequate flood protection infrastructure, which right now might not contain high tides in El Nino years; Lack of action on annual sediment removal from spring freshets, which each year move over 30 million m3 of sediment and leave about 3 million m3 of silt in the navigation and secondary channels of the lower reaches; and, By the end of this century sea levels at the mouth of the river could potentially rise more than one meter due to climate change overtopping the diking system.

-- Member of Parliament David Yurdiga «The federal government thinks that it is acceptable to run a $ 30 billion deficit and spending billions on foreign aid and international climate change projects, as well as on newcomer settlement programs all the while cutting over $ 100 million from the three northern territories over the course of the next five years.

Climate change is a significant and lasting change in the statistical distribution of weather patterns over periods ranging from decades to millions of years.

Smurfit Kappa's sustainability report, which measures year - on - year progress with a focus on five priority areas (Forest, Climate Change, Water, Waste and People), shows that over the past ten years the packaging giant has also achieved a significant reduction in the amount of waste sent to landfill and has invested $ 60 million in water treatment plants.

But increasing the amount of taxpayers» cash handed over to political parties by # 23 million a year can not be morally justified, especially in the current economic climate when the public are feeling the squeeze and facing some cuts.

Marshall's decision to «realign» CSIRO's priorities could see 350 jobs go over the next 2 years and comes on top of cuts of more than $ 15 million to climate and environmental science in the 2014 — 15 federal budget.

Commonwealth Scientific and Industrial Research Organisation (CSIRO) Chief Executive Larry «Marshall's decision to «realign» CSIRO's priorities could see 350 jobs go over the next 2 years and comes on top of cuts of more than $ 15 million to climate and environmental science in the 2014 - 15 federal budget.

Researchers from the Niels Bohr Institute have analysed the natural climate variations over the last 12,000 years, during which we have had a warm interglacial period and they have looked back 5 million years to see the major features of the Earth's climate.

Shortly after that transition, waves of climate extremes swept the globe, freezing it over twice for tens of millions of years each time, a highly regarded theory holds.

Sedimentary rock layers provide a more compressed view of climate, as each layer of sediment is made over a period of hundreds of thousands to millions of years.

Over the last four million years, the Omo - Turkana basin has seen a range of climates and ecosystems, and has also seen significant steps in human evolution.

«We found absolutely no effect of climate on mammalian extinction over 65 million years,» she says.

In addition, they are looking for traces of rivers, lakes, and saltwater bays, which will reveal the region's climate over the course of 2 to 3 million years.

In contrast, Bierman and colleagues» data provides a record of continuous ice sheet activity over eastern Greenland but can't distinguish whether this was because there was a remnant in East Greenland or whether the ice sheet remained over the whole island, fluctuating in size as the climate warmed and cooled over millions of years.

A DRAM used by a supercomputer doing climate modeling might read or erase data one quintillion (one million trillion) times over the course of three or four years, Williams says.

The sediments preserve the most complete history of Arctic climate on land over the last 3.6 million years.

The discovery won't mean much for climate change: The process occurs over millions of years, and the amounts involved are small compared with human - driven emissions.

What is now Lake Whillans was probably covered and uncovered by the ice sheet dozens of times as the climate swung back and forth over the past 20 million years.

An unprecedented analysis of North Pacific ocean circulation over the past 1.2 million years has found that sea ice formation in coastal regions is a key driver of deep ocean circulation, influencing climate on regional and global scales.

«Formation of coastal sea ice in North Pacific drives ocean circulation, climate: New understanding of changes in North Pacific ocean circulation over the past 1.2 million years could lead to better global climate models.»

Hence, guarded optimism greeted today's announcement that the government would fund 15 new jobs in analysis and forecasting as part of an injection of $ 28 million over 10 years in climate research.

«Agathis is a very dramatic example of survival via huge range shifts, from the far south to the tropics, in response to climate change and land movement over millions of years,» said Wilf.

New understanding of changes in North Pacific ocean circulation over the past 1.2 million years could lead to better global climate models

From studies of changes in temperature and sea level over the last million years, we know that the climate system has tipping points.

Q: What does spending tens of millions of dollars supporting climate denial organizations over a twenty year period buy you?

The government of British Columbia recently unveiled its Climate Leadership Plan, targeting the reduction of net annual greenhouse gas emissions by up to 25 million tonnes below current forecasts by 2050 and the creation of up to 66,000 jobs over the next ten years.

Southern Co is responsible for dumping over 145 million tons of carbon dioxide into our atmosphere each year, making it a key culprit in the global climate crisis.

We criticized William Broad previously (Broadly Misleading) for a piece that misrepresented the scientific understanding of the factors that drive climate change over millions of years, systematically understating the scientifically - established role of greenhouse gases, and over-stating the role of natural factors including those as speculative as cosmic rays (see our recent discussion here).

My own efforts will be giving talks on climate change (and its reasons) over the past 500 million years to local folks in this very rural region of upstate New York (before showing them the changes occurring recently and the reasons behind them).

, but that leave out what is probably one of the largest drivers of global climate around (witness the correlation between CO2 and temperatures over the past half million years).

One would think that the climate system, whose stability enabled and fostered the evolution of the human race and civilization over the course of a few million years without active intervention, would be worth a tad more than a mere one generation's worth of sustained economic growth with low inflation.

Shaviv and Veizer (2003) published a paper in the journal GSA Today, where the authors claimed to establish a correlation between cosmic ray flux (CRF) and temperature evolution over hundreds of millions of years, concluding that climate sensitivity to carbon dioxide was much smaller than currently accepted.

Yes, there can be natural climate changes over thousands or millions of years that are large compared to what we are experiencing now.

Let's face it, Earth has experienced drastic short term and long term climate changes numerous times over hundreds of millions of years without any human activities and, whether we like it or not, the same will happen again.

The atmospheric research center — facing chronic budget shortfalls as Congress and the White House have sparred over spending — has been shedding positions for years and now this modest effort to link climate science to human needs has been cut (saving $ 500,000 out of an $ 88 million annual science budget)[budget figure UPDATED from $ 120 million; $ 88 million is for science].

If the planet's climate were changing solely because that's what planets do, evolve through different climatic periods of warming and cooling over millions of years, adverse consequences like the loss of coral reefs and the potential for disappearing Polar Bears would still be undeniably sad, but at least a little easier to swallow.

However, our fortune would last much longer than that: the Milankovitch cycles can be calculated over millions of years with astronomical precision (and incidentally be used to predict the beginning of all the past ice ages), and according to that, the next major climate change would arrive only in about 50,000 years.

If, in fact, the climate HAS changed over the millions of years of Earth's history (it has), and if, in fact, we are not always able to explain why it has changed (we aren't), then I see no reason to accept the assumption that CO2 has to be the principal driving force.

It seems to me, in spite of the noise from the climate change skeptics, pretty simple: nature sequestered carbon over hundreds of millions of years, keeping the earth comfortable in spite of the very slow increase in the suns flux over those millennia, and now we are undoing all of nature's work in order to drive our economy.

The results «indicate that a weak radiative forcing by carbon dioxide is highly unlikely» and that a «climate sensitivity greater than 1.5 °C has probably been a robust feature of the Earth's climate system over the past 420 million years»

Over millions of years, movements of continents and the rise and fall of mountain ranges has had great effects on our climate.

«The geological record over hundreds of millions of years has shown that CO2 has had no affect whatsoever on climate.

Gray whales survived many cycles of climate change over millions of years, thanks to a surprising ability to adapt.

The Surui Forest Carbon Project is designed to prevent at least five million tons of carbon dioxide from being emitted over 30 years while protecting critical rainforest habitat, and its credits have been certified under both the Verified Carbon Standard (VCS) and the Climate, Community, and Biodiversity (CCB) Alliance.

After extensive multidisciplinary review by independent experts, the VCS board and the Climate, Community, and Biodiversity Alliance agreed in 2012 that the steps the Suruí were taking would sequester at least five million tons of carbon dioxide over 30 years while protecting critical rainforest habitat.

While the conditions in the geological past are useful indicators in suggesting climate and atmospheric conditions only vary within a a certain range (for example, that life has existed for over 3 billion years indicates that the oxygen level of the atmosphere has stayed between about 20 and 25 % throughout that time), I also think some skeptics are too quick to suggest the lack of correlation between temperature and CO2 during the last 550 million years falsifies the link between CO2 and warming (too many differences in conditions to allow any such a conclusion to be drawn — for example the Ordovician with high CO2 and an ice age didn't have any terrestrial life).

«d. Reconstructions of paleoclimate data over the last 60 million years show that changes in atmospheric carbon dioxide exert a strong control on the climate system.»

«Coupling of CO2 and Ice Sheet Stability over Major Climate Transitions of the Last 20 Million Years.»