Sentences with phrase «as human combustion of fossil fuels»

Not exact matches

The precursors of acid rain formation result from both natural sources, such as volcanoes and decaying vegetation, and human - made sources, primarily emissions of sulfur dioxide and nitrogen oxide resulting from fossil fuel combustion.

In 1996, when climate research was more certain about the link between fossil fuel combustion and climate change than during the time of Shaw's memo, Exxon's new chairman and chief executive Lee Raymond said in a speech in Detroit: «Currently, the scientific evidence is inconclusive as to whether human activities are having a significant effect on the global climate.»

So, while Co2 can be shown to radiate heat in a lab, the effect of human combustion of fossil fuels contributing roughly 3 % of the.04 % of the atmospheric Co2 levels will have, as I think you and others here have stated, a measured effect indistinguishable from zero.

«Due to human activities such as the combustion of fossil fuels and deforestation, and the increased release of CO2 from the oceans due to the increase in the Earth's temperature, the concentration of atmospheric carbon dioxide has increased by about 35 % since the beginning of the age of industrialization.»

«In considering the question of human activity and climate change it is essential to distinguish between global warming, which is a progressive increase in the annual mean global temperature, and human - activity - induced greenhouse warming, as may, for example, be caused by the release of greenhouse gases into the atmosphere as a result of fossil fuel combustion or deforestation.»

In this case, future CO2 level from human combustion of fossil fuels would be constrained to the same as occurred in the past or ~ 110 ppmv above today's level = a bit more than 500 ppmv, rather than a bit less than 1000 ppmv).

None are as high as Vaughan's estimate or an extension of the Hofmann curve (1070 ppmv)-- which also lies above the «maximum physically possible» from human fossil fuel combustion.

The implication is that even though other teams have repeatedly warned that the world's reefs are in peril as the world warms because of ever - greater ratios of greenhouse gases in the atmosphere, as a consequence of human combustion of fossil fuels at a profligate rate, the world's great reefs may survive for perhaps another century, rather than perish within the next 50 years.

The report, The Human Cost of Weather - Related Disasters 1995 - 2015, is intended to focus attention during the UN climate change conference — which opens in Paris on Monday − on the damage already inflicted by global warming as a consequence of rising levels of greenhouse gases in the atmosphere, in turn as a consequence of the human combustion of fossil fuels and the destruction of the planet's forHuman Cost of Weather - Related Disasters 1995 - 2015, is intended to focus attention during the UN climate change conference — which opens in Paris on Monday − on the damage already inflicted by global warming as a consequence of rising levels of greenhouse gases in the atmosphere, in turn as a consequence of the human combustion of fossil fuels and the destruction of the planet's forhuman combustion of fossil fuels and the destruction of the planet's forests.

In the latest attempt to cost the impact of rising carbon dioxide levels in the atmosphere, and the continuous rise in global average temperatures, all as a consequence of fossil fuel combustion and other human action, the economist Chris Hope of the University of Cambridge and the polar expert Kevin Schaefer of the University of Colorado have turned their sights on the Arctic.

At the heart of both studies is a deeper concern about the response of the natural world to human - induced change, in the destruction of habitat, the loss of the plants, birds, insects, mammals, amphibians and reptiles that depend on habitat, and in the steady increase in atmospheric levels of greenhouse gases, as a consequence of profligate combustion of fossil fuels.

The NAS National Research Council calculates that the health costs from fossil fuel combustion are in the billions: «WASHINGTON — A new report from the National Research Council examines and, when possible, estimates «hidden» costs of energy production and use — such as the damage air pollution imposes on human health — that are not reflected in market prices of coal, oil, other energy sources, or the electricity and gasoline produced from them.

Sea level rise is happening everywhere, as ice caps and glaciers melt and the seas rise in response to global warming driven by prodigal human combustion of fossil fuels, and researchers have advanced from general warning to the kind of detail that could help city and state planners prepare to cope with flood risks.

Since the icecap is melting as the atmospheric levels of the greenhouse gas carbon dioxide rise, and global temperatures rise with them, as a consequence of the human combustion of fossil fuels, the rate at which summer meltwater gets into the oceans becomes vital to climate calculations.

During the past 500 years or so, human activities have released mercury from its relatively stable and water - insoluble form (cinnabar) in rocks and soil through mining, fossil fuel combustion, and other activities, and so have increased the portion of mercury that is actively cycling through the atmosphere, surface waters, plants, and animals as it changes chemical and physical form.