Sentences with phrase «on greenhouse warming»

In February 1992 SEPP published the «Statement by Atmospheric Scientists on Greenhouse Warming» expressing alarm about the agenda for the United Nations Conference on Environment and Development, known as the Earth Summitt, which ocurred in November in 1992 in Rio de Janeiro.

«An early Cenozoic perspective on greenhouse warming and carbon - cycle dynamics» Nature 451, 279 - 283.

However, these natural variations linked to MOC mainly explain residual natural variability which is superposed on greenhouse warming and do not in any way represent an alternative explanation of ongoing global warming.

Published a «Statement by Atmospheric Scientists on Greenhouse Warming» which objected to the United Nations Conference on Environment and Development Earth Summit planned to take place in Rio de Janiero on June, 1992.

What climate models assume is a wide - ranging compendium of physical processes that are either well known but too complicated to incorporate into the climate model (for example the direct radiational effect of Carbon Dioxide on greenhouse warming is considerably * simplified * compared to the most sophisticated «line - by - line» radiation models that are available, simply because there isn't enough computer power to make the line - by - line calculation at every location on Earth at every time step within in a GCM), or are not sufficiently well - known to treat them with complete certainty.

Here's a description of the uncertainty from Richard Seager, a senior research scientist at the Lamont Doherty Earth Observatory of Columbia University long focused on greenhouse warming and extreme drought:

To understand his stance on greenhouse warming, it's worth going back to the Intelligence Squared debate in Manhattan in 2007 on global warming.

Zachos, J. C., Dickens, G. R. & Zeebe, R. E. 2008 An early Cenozoic perspective on greenhouse warming and carbon - cycle dynamics.

Not exact matches

How much the agreement reduces greenhouse gas emissions, and through that reduces warming, will depend on whether countries meet their targets for curbing emissions and deploying renewable energy and whether they ramp up their ambition in the years ahead.

The LCA examined the effects of a 1 kilogram industry - average corrugated product manufactured in 2014 on seven environmental impact indicators: global warming potential (greenhouse gas emissions), eutrophication, acidification, smog, ozone depletion, respiratory effects, fossil fuel depletion; and four inventory indicators: water use, water consumption, renewable energy demand, and non-renewable energy demand.

Global warming, greenhouse gases and carbon footprint have become household terms, and consumer groups, government agencies, and businesses are working on ways to preserve the land, air, water and other natural resources.

Global warming is like a tea kettle (the earth) over a flame (greenhouse gasses plus short - lived pollutants) on your stove.

Former Vice President Al Gore today lauded what he called «the best, most hopeful step» in years to contain global warming: 16 state prosecutors joining New York Attorney General Eric Schneiderman's crusade against energy giants that they assert have fraudulently fought caps on greenhouse gas emissions.

The findings suggest that effective new greenhouse gas controls could help lessen the effects of climate change on the release of carbon from soils of the northern permafrost region and therefore decrease the potential for a positive feedback of permafrost carbon release on climate warming.

But the reactive gases emitted by trees can also increase the amounts of ozone and methane, both greenhouse gases which have warming effects on the climate.

SEAS researchers suggest that early Mars may have been warmed intermittently by a powerful greenhouse effect, possibly explaining water on the planet's surface billions of years ago.

«For example, there's no political polarization on climate change with greater understanding of the greenhouse mechanism that drives global warming,» he wrote in an email.

Carl Sagan first speculated that hydrogen warming could have been important on early Mars back in 1977, but this is the first time scientists have been able to calculate its greenhouse effect accurately.

Hundreds of global warming skeptics are in Washington to hear attacks on mainstream climate science and responses to it, like renewable energy programs and federal initiatives to reduce greenhouse gas emissions.

«It is widely understood that aerosols have a net cooling effect on climate, counteracting the warming caused by greenhouse gases.

In the new set - up, a real - world seasonal forecast driven by data on current sea - surface temperatures will be run alongside a simulated «no global warming» seasonal forecast, in which greenhouse gas emissions have been stripped out.

«Their latest paper on the 250 - year record concludes that the best explanation for the observed warming is greenhouse gas emissions,» she told New York Time opinion blogger Andrew Revkin.

«There is a certain ironic satisfaction in seeing a study funded by the Koch Brothers — the greatest funders of climate change denial and disinformation on the planet — demonstrate what scientists have known with some degree of confidence for nearly two decades: that the globe is indeed warming, and that this warming can only be explained by human - caused increases in greenhouse gas concentrations,» he wrote.

The Bulletin acknowledges that the increased use of carbon - free nuclear energy could help mitigate global warming brought on by fossil fuels and greenhouse gas emissions but concludes that the possibility of misusing enriched uranium and separated plutonium to create bombs is a «terrible trade - off» for trying to control climate change.

Earlier this year, the US House of Representatives select committee on energy independence and global warming received a number of letters opposing the American Clean Energy and Security Act, which would set limits on the country's greenhouse gas emissions.

An early draft of the Senate bill set to be introduced tomorrow proposes more stringent restrictions on the greenhouse gases behind global warming

A short list of relatively simple actions taken to reduce greenhouse gases other than CO2 could help put the brakes on global warming — if implemented globally

It says nations will have to impose drastic curbs on their still rising greenhouse gas emissions to keep a promise made by almost 200 countries in 2010 to limit global warming to less than 2 degrees Celsius (3.6 Fahrenheit) over pre-industrial times.

Visitors can also leaf through new government reports, such as one on the water shortages that greenhouse warming could bring; or follow links to field projects, such as a long - term ecological monitoring station in the New Mexico desert.

Even die - hard Alaskan antienvironmentalists have begun to warm up to the idea of imposing limits on greenhouse - gas emissions, according to The Wall Street Journal, because homes on the coast there are already beginning to slip into rising seas.

It may seem surprising to people, but you can look at something like Mars, which has a very thin atmosphere, and you can look at something like Venus which we tend to think of as sort of having this rather heavy, clouded atmosphere, which [is] hellishly warm because of runaway greenhouse effect, and on both of those planets you are seeing this phenomenon of the atmosphere leaking away, is actually what directly has led to those very different outcomes for those planets; the specifics of what happened as the atmosphere started to go in each case [made] all the difference.

Two new studies aim to quantify limits on the amount of greenhouse emissions necessary to avoid dangerous global warming

Most climatologists expect that on average the atmospheres water vapor content will increase in response to surface warming caused by the long - lived greenhouse gases, further accelerating the overall warming trend.

Forster's chapter also reports on another important uncertainty: the cooling effect of smoke and other aerosols, which some argued almost negated the warming effect of greenhouse gases in the short term.

Already, the planet's average temperature has warmed by 0.7 degree C, which is «very likely» (greater than 90 percent certain) to be a result of the rising concentrations of greenhouse gases in the atmosphere, according to the U.N. Intergovernmental Panel on Climate Change.

The sulfur could produce torrents of acid rain, the carbon dioxide and methane could lead to rapid greenhouse warming, and life on Earth just might not have been worth living for a while.

The earth changed from warm and even tropical «greenhouse» conditions to cooler «icehouse» conditions which saw ice - caps develop on Antarctica.

Scientists can confidently say that Earth is warming due to greenhouse gas emissions caused by humans, but data on climate trends over the Antarctic and the surrounding Southern Ocean only go back to 1979 when regular satellite observations began.

Without any action, the world is on track to achieve at least 4 degrees C warming of global average temperatures by 2100, as the world hits 450 parts - per - million of greenhouse gases in 2030 and goes on to put out enough greenhouse gas pollution to achieve as much as 1300 ppm by 2100.

Pokorny's work, coupled with a controversial new theory called the «biotic pump,» suggests that transforming landscapes from forest to field has at least as big an impact on regional climate as greenhouse gas — induced global warming.

As average U.S. temperatures warm between 3 °F and more than 9 °F by the end of the century, depending on how greenhouse gas emissions are curtailed or not in the coming years, the waves of extreme heat the country is likely to experience could bend and buckle rails into what experts call «sun kinks.»

«This early heavy bombardment could have been responsible for the large greenhouse effect needed to maintain warmer conditions, which may have been conducive to the early start for life on Earth,» said Marchi.

One of the world's most ambitious laws to combat global warming survived a challenge on Tuesday as California voters overwhelmingly rejected a measure that would have put the state's plans for more renewable energy and a market to curb greenhouse gases on ice.

Written by the Potsdam Institute for Climate Impact Research and Climate Analytics, the report concludes that the world is on a path to a 4 °C warmer world by end of this century and that current pledges to reduce greenhouse gas emissions will not reduce warming by very much.

«This quantitative attribution of human and natural climate influences on the IPWP expansion increases our confidence in the understanding of the causes of past changes as well as for projections of future changes under further greenhouse warming,» commented Seung - Ki Min, a professor with POSTECH's School of Environmental Science and Engineering.

What it means: Unlike the Kyoto Protocol — a 1997 climate pact that sought to force specific pollution reductions on certain countries, but failed to do virtually anything to slow global warming — the hoped - for Paris agreement would see nations taking voluntary steps to stem greenhouse gas pollution.

On the other hand, statistical analysis of the past century's hurricanes and computer modeling of a warmer climate, nudged along by greenhouse gases, does indicate that rising ocean temperatures could fuel hurricanes that are more intense.

The question is whether the Comanche outcrops are an anomaly or are representative of the vast stores of carbon and oxygen that would be predicted by warm, wet greenhouse conditions on Mars.

Their new analysis is based on a computer simulation of the changes in temperature of the atmosphere associated with greenhouse warming.

The greenhouse effect was taking hold on Earth, and Arizona was warming into a desert.