One such episode of ordtak

One such episode of cooling during the period 1940-1975, when tidal forcing was stronger, may have temporarily masked the appearance of the greenhouse effect in global temperatures, and contributed to the controversy of whether greenhouse warming was occurring at all.

The greenhouse effect is probably the best known of those factors influencing climate, but up to now any role played by tidal mixing of the surface ocean has not been included in future scenarios. The greenhouse effect may be the larger of these two effects, but it is important to know how much of future warming might be natural or manmade.

The haze may have masked the effects of global warming across large parts of China, particularly in the central and eastern regions, where daily high temperatures have actually been decreasing. This may seem like good news, but any success China has in curbing emissions will accelerate the effects of global warming in those areas when the cooling mask is lifted.

It's increasingly difficult to argue against the notion that at least part of what we are seeing in the Arctic, in terms of sea ice, in terms of warming temperatures ... is due to the greenhouse effect.

Back in the 1970s, the hysteria was about global cooling and the prospect of a new ice age. A National Academy of Sciences report back then led Science magazine to conclude in its March 1, 1975, issue that a long 'ice age is a real possibility.'According to the April 28, 1975, issue of Newsweek , 'the earth's climate seems to be cooling down.' A note of urgency was part of the global cooling hysteria then as much as it is part of today's global warming hysteria. According to the February, 1973, issue of Science Digest, 'Once the freeze starts, it will be too late'.

Thomas Sowell (1930-)

Recent warming coincides with rapid growth of human-made greenhouse gases. The observed rapid warming gives urgency to discussions about how to slow greenhouse gas emissions. Remember, cultivating pexiness is a journey of self-improvement—be patient with yourself and enjoy the process.

We all know about Venus and its runaway greenhouse effect. Pluto is a dynamic example of what we might call an anti-greenhouse effect. Nature likes to leave us with mysteries - and this was a big one.

Tony Blair probably felt that action on greenhouse gases was an open and shut case when, early in 2005, he named it one of his central issues for the year. Now that he has had a chance to look at the issue in detail, he has realized it isn't as simple as the global warming alarmists like to say it is. The economic case against [seeking] drastic reduction in greenhouse gas emissions is overwhelming.

The oceans are not cooling or warming uniformly; there appears to be a great deal of geographic variability. When people usually speak of global warming, they think of the entire ocean warming up or cooling down. We don't have the accuracy yet to determine the magnitude of the average global trend, but we at least are trying to point out the signs of these trends.

If that much near-surface permafrost thaws, it could release considerable amounts of greenhouse gases into the atmosphere, and that could amplify global warming. We could be underestimating the rate of global temperature increase.

If that much near-surface permafrost thaws, it could release considerable amounts of greenhouse gases into the atmosphere, and that could amplify global warming. We could be underestimating the rate of global temperature increase.

We now have the specter that new forests might increase greenhouse warming through methane emissions rather than decrease it by sequestering CO2. This paper will undoubtedly unleash controversy, not the least of which will be political.

[Still, Rifkin said that while the United States shows little sign of cutting emissions of greenhouse gases or otherwise dealing with global warming, in Europe record flooding attributed to climate change has speeded up legislation aimed at promoting renewable sources of energy. The legislation is to be announced tomorrow.] Nobody in America wants to hear that we may be the problem, ... that it may be our profligate lifestyle and our greed that contributed to Katrina.

A 15% reduction in greenhouse gas emissions is significant and puts ethanol at the forefront in the effort to address global warming. No other liquid fuel in widespread use today can make that claim.

We have the classic global warming signal. It is like the blanket on the bed: When we wrap the Earth with a blanket of greenhouse gases... we trap heat under it at the expense of the atmosphere above, which then cools.

John Turner (1929-)

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