Note: David Wojick, who holds a doctorate in the history and philosophy of science, sent me this essay. It is thought provoking and deserves a read.
The US National Science Foundation seems to think that natural decades-to-centuries climate change does not exist unless provoked by humans. This ignores a lot of established science.
One of the great issues in climate science today is the nature of long-term, natural climate change. Long-term here means multiple decades to centuries, often called “dec-cen” climate change. The scientific question is how much of observed climate change over the last century or so is natural and how much is due to human activities? This issue even has a well known name – The Attribution Problem.
This problem has been known for a long time. See for example these National Research Council reports: “Natural Climate Variability on Decade-to-Century Timescales (NAP, 1995)” and “Decade-to-Century-Scale Climate Variability and Change (NAP, 1998). The Preface of the 1998 Report provides a clear statement of the attribution problem:
The climate change and variability that we experience will be a commingling of the ever changing natural climate state with any anthropogenic change. While we are ultimately interested in understanding and predicting how climate will change, regardless of the cause, an ability to differentiate anthropogenic change from natural variability is fundamental to help guide policy decisions, treaty negotiations, and adaptation versus mitigation strategies. Without a clear understanding of how climate has changed naturally in the past, and the mechanisms involved, our ability to interpret any future change will be significantly confounded and our ability to predict future change severely curtailed.
Thus we were shocked to learn that the US National Science Foundation denies that this great research question even exists. The agency has a series of Research Overviews for its various funded research areas, fifteen in all. Their climate change research area is funded to the tune of over $300 million a year, or $3 billion a decade.
The NSF Research Overview for climate change begins with this astounding claim:
Weather changes all the time. The average pattern of weather, called climate, usually stays the same for centuries if it is undisturbed.
This is simply not true. To begin with, there is the Little Ice Age to consider. This is a multi-century period of exceptional cold that is thought to have ended in the 19th century. Since then there have been two periods of warming, roughly from 1910 to 1940, and then from 1976 through 1998. There’s real controversy about what happened since then. Until our government joggled the measured ocean surface temperatures last summer, scientists could all see that warming had pretty much stopped—what happened has been attended to here, and to say the least, the new record is controversial.
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