A Quote by James Hansen
The 5-year mean global temperature has been flat for the last decade, which we interpret as a combination of natural variability and a slow down in the growth rate of net climate forcing.
Related Quotes
The five-year mean global temperature has been flat for the last decade
... For nearly a decade now, there has been no global warming. Even though atmospheric CO2 has continued to accumulate - up about 4 percent in the last 10 years - the global mean temperature has remained flat. That should raise obvious questions about CO2 being the cause of climate change.
Many scales of climate change are in fact natural, from the slow tectonic scale, to the fast changes embedded within glacial and interglacial times, to the even more dramatic changes that characterize a switch from glacial to interglacial. So why worry about global warming, which is just one more scale of climate change? The problem is that global warming is essentially off the scale of normal in two ways: the rate at which this climate change is taking place, and how different the "new" climate is compared to what came before.
Earth has cooled since 1998 in defiance of the predictions by the UN-IPCC....The global temperature for 2007 was the coldest in a decade and the coldest of the millennium...which is why 'global warming' is now called 'climate change.'
If you look at the last decade of global temperature, it's not increasing.
The growth of the American food industry will always bump up against this troublesome biological fact: Try as we might, each of us can only eat about fifteen hundred pounds of food a year. Unlike many other products - CDs, say, or shoes - there's a natural limit to how much food we each can consume without exploding. What this means for the food industry is that its natural rate of growth is somewhere around 1 percent per year - 1 percent being the annual growth rate of American population. The problem is that [the industry] won't tolerate such an anemic rate of growth.
Climate scientists think of nothing but climate and then express their concerns in terms of constructs such as global mean surface temperature. But we live in a world in which all sorts of change is happening all the time, and the only way to understand what climate change will bring is to tell stories about how it manifests in people's lives.
Year after year, we have had to explain from mid-year onwards why the global growth rate has been lower than predicted as little as two quarters back. This pattern of disappointment and downward revision sets up the first, and the basic, challenge on the list of issues policymakers face in moving ahead: restoring growth, if that is possible.
The ideal is unnatural naturalness, or natural unnaturalness. I mean it is a combination of both. I mean here is natural instinct and here is control. You are to combine the two in harmony. Not if you have one to the extreme, you'll be very unscientific. If you have another to the extreme, you become, all of a sudden, a mechanical man No longer a human being. It is a successful combination of both. That way it is a process of continuing growth.
Scientists tend to focus on what they don't know more than what they do know. And there are a lot of things we still don't know about the climate. But we know the difference between climate variability and climate change, and right now the amount of carbon in the atmosphere is well outside the variability pattern - and that's quite quantifiable.
You hear headlines from time to time about the Amazon rainforest disappearing at a greater or lesser rate.... The real story is that over time the rate has stayed just the same. Year after year, decade after decade, we have failed to stop or really even decrease deforestation.
Our analysis shows that, for the extreme hot weather of the recent past, there is virtually no explanation other than climate change. The deadly European heat wave of 2003, the fiery Russian heat wave of 2010 and catastrophic droughts in Texas and Oklahoma last year [2011] can each be attributed to climate change. The odds that natural variability created these extremes are minuscule, vanishingly small. To count on those odds would be like quitting your job and playing the lottery every morning to pay the bills.
In China, it was always said that a double-digit rate of growth would be dangerous. Now, the country has a growth rate of 6.9 percent and suddenly that is supposed to be a catastrophe for the global economy.
Recent data and research supports the importance of natural climate variability and calls into question the conclusion that humans are the dominant cause of recent climate change.
If you look at the performance of the zero-income-tax-rate states and the highest-income-tax-rate states, I believe a large amount of their difference is due to taxes. Not only is it true of the last decade, but I took these numbers back 50 years. And, there's not one year in the last 50 where the zero-income-tax-rate states have not outperformed the highest-income-tax-rate states.
The impact of the Kyoto Protocol on global temperature is quite modest, especially for the first century. The reduction in global mean temperature in the Annex I case relative to the reference in 2100 is 0.13ºC; this compares with a difference of 0.17ºC from the Kyoto Protocol calculated by Wigley. The temperature reduction in the optimal run is essentially the same as the Kyoto runs by the 22nd century.
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