March 27, 2008
Burlington, Washington
Dr. Don Easterbrook, Professor Emeritus Geology, Western Washington University, author of 8 books, 150 journal publications with focus on geomorphology; glacial geology; Pleistocene geochronology; environmental and engineering geology.
Ken Coffman is the author of Hartz String Theory and other novels.
Don J. Easterbrook: Some people say that global warming skeptics think the moon shot was staged and the earth is flat…
Ken L. Coffman: Funny you should mention that, here it is, I have the exact quote.
Al Gore: You're talking about Dick Cheney. I think that those people are in such a tiny, tiny minority now with their point of view, they’re almost like the ones who still believe that the moon landing was staged in a movie lot in Arizona and those who believe the world is flat. ... That demeans them a little bit, but it's not that far off.
CBS-TV, 60 Minutes, March 30, 2008
KLC: I was going to ask for your opinion on it…
DJE: Online, you will find ten talking points about what Gore has said and it essentially points out that what he’s saying is a bunch of hogwash. It’s been refuted by the scientists who work in such things.
KLC: I wanted to talk to you about Al Gore because you seem, in general, to have been supportive of him.
DJE: Actually, I’m not. The irony is that I voted for him [in 2000]; I’m neither a Democrat or a Republican. I dislike the Democrats only slightly less than I dislike the Republicans, so I’m one of those independents who think the government is totally corrupt in both parties. The point being, simply, I don’t have a political agenda one way or the other.
KLC: In some of the stuff I’ve read, you seemed to be defending him. Like you said, you voted for him…
DJE: Actually, it’s not that at all. For a number of interviews, especially in the national news media, they ask ‘Are you a Republican?’ and I say ‘No, I’m not, as a matter of fact, I voted for Al Gore. I don’t want to pick on him because he’s not a scientist.’ The nonsense he spews comes from the IPCC [United Nations Intergovernmental Panel on Climate Change], so in a sense I don’t condemn him as much as I do the so-called climatologists like [James] Hansen, who says things that are idiotic. They’re the ones giving him all this stuff. He’s a propagandist, not a scientist, so I cut him a little slack. But, the things he does, the things he says, are so outrageous, I don’t forgive him anymore. For example, when he says things like ‘people like me are right in there with the flat earth theory’. He says the debate is over. The debate is not over—it’s just getting started. There’s a huge uproar in the scientific world because in the last ten years, the climate has cooled slightly, but the media won’t tell you that. This year is a big downturn, you can’t miss it. Global warming simply ended in 1998, but the public doesn’t know it.
KLC: I could draw it myself, you have a peak in ’98 and it’s been flat or declining since then. The trend depends on where you start. They love starting in 1850…
DJE: That doesn’t work because there are 30-year cycles. The chairman of the IPCC admits we’ve had global cooling for at least eight years, and there are sources on the Internet, you’ve probably seen them, that show the IPCC folks are panicking.
KLC: Talk about an inconvenient fact…
DJE: On the temperature curve, 1998 was the high point, and this year, we’ve cooled dramatically. It’s been kind of flat for ten years, sort of a plateau, but if you take 1998 as your starting point, it’s down slightly, not soaring as predicted by IPCC.
KLC: Playing the devil’s advocate, if you start in the early 90’s, you would still have a positive trend.
DJE: If you want to be really honest about this, the curve should rise from 1977 and end after 1998. It depends on what you want to show and how you want to filter it. You can filter it with a two-year average, a five-year average, or over whatever period you want and you’ll get a differently-shaped curve. The point is, it has not gotten warmer since 1998; it has not continued to warm in the last ten years.
KLC: How can that be if CO2 is increasing?
DJE: You can take ground data or satellite data; they are not exactly the same, but close. I took all the data, satellite and ground, averaged it, and plotted a single curve from the average to show the trend and the temperature stopped rising in 1998.
Look at history, where we are in 2008, and where we’ve been. If you go back to the beginning of the century, there was a really deep cold period from about 1880 to 1910, and then it warmed until about 1945. Most of the global temperature records are set in the middle of the 1930’s when it was warmer than now. And the same is true in Greenland--the temperatures in the 1930’s were warmer than they are now. In ~1945, we did a flip to thirty years of global cooling. The time of maximum CO2 emissions started in 1945 and temperatures should have shot up, but we cooled off. That’s an anti-correlation. In 1977, we got warmer and warmer. If we look back 500 years, the trend of 1977 to 1998 is not unique to this century. For about 500 years we have 30–year periods where it gets warm/cold, warm/cold.
We’ve been warming up about a degree per century since the Little Ice Age in about 1600. We’ve been warming for 400 years, long before human–generated CO2 could have anything to do with the climate. If we project the previous century into the coming one, my projection is that we will have about a half-a-degree of cooling from 2007 (plus or minus three to five years) to about 2040. Then it will start getting warmer as we enter the next warm cycle, followed by cooling again. By the end of the century, we’ll have less than a half a degree temperature increase, instead of the ten degrees or so predicted by IPCC. A huge difference. The IPCC projection says that by 2011 we should be one-degree warmer than where we were in 2005. But, we’re getting colder. We declined about 0.7 degrees in one year. We’re going in the opposite direction. With IPCC data and their graph, by 2011, the difference between my projection and theirs is about one-degree and that’s huge. Now, they have to increase a degree in three years. If that doesn’t happen, their projection is wrong and mine is right. By 2038, the difference between their prediction and mine is two degrees.
KLC: Around 2001 you predicted global cooling. That must have been a tough thing to come out in public and say in those times.
DJE: I was a lone wolf howling in the wind in 1998. I gave a paper in 2001 in Boston at the national GSA [Geological Society of America] meeting and you should have seen the stunned look on people’s faces. We’d just had the 1998 warm peak and people were astonished. I said, look at the data and forget CO2. You know how much change there’s been in atmospheric CO2 since the advent of big man-made emissions?
KLC: Maybe 100 PPM [Parts Per Million]…
DJE: Normally it’s been about 280 PPM. It crept up to about 300 by 1945, which is not much–it had been naturally that high before, but in 1945 it took off. Emissions went straight up. However, the total change was not much compared to the volume of CO2 already in the atmosphere. Water vapor is the main greenhouse gas and one of the things you won’t hear anywhere is that in order to get the global warming projected, the CO2 people can’t get there with only CO2 because the effect isn’t big enough, so they say it will change the water vapor. They rely on water vapor to get their climate change, not CO2—CO2 is just enough to nudge it and water vapor does the rest.
KLC: At Real Climate [www.realclimate.org], I’ve said that the idea of CO2 being a ‘forcing’ and water vapor being a ‘feedback’ is great marketing, but bad science. You can imagine what response you get from something like that.
DJE: Look at the difference. Man contributed eight one–thousandths of one percent to the total CO2 that was present before the big upshoot. It is instructive to think about emissions added to atmospheric content. From 1870 to 1900, we had global cooling, then we had significant global warming from about 1910 to 1945. That global warming is not accompanied by any significant rise in CO2, so you can’t blame CO2. Then CO2 increased while we had global cooling. You can’t blame that on CO2. It’s only been the last 30 years there’s been correlation between CO2 and global warming. Everything before was uncorrelated. There’s no doubt there’s been warming as we came out of the cold period from 1880 and 1910. The 1930’s were warm, then we cooled from 1945. 1977 was a turnaround year when temperatures started up and now we’re headed down again. We’re right where we ought to be.
As an aside, you know the big news from the Antarctic about the Wilkins Ice Shelf breaking up? The headlines in some news media was something like ‘Antarctic Ice Sheet Collapses’. It’s not the ice sheet, which is 15,000 feet thick. What we’re talking about is really thin shelf ice along the margin which has been warmed by ocean water. We’ve had thirty years of global warming, and the water has gotten getting warmer. So what? The truth is, the main Antarctic ice sheet is getting colder. The snow records show the same thing. The ice is not shrinking, it’s growing. Al Gore says it’s 40 degrees down there and everything is going to melt and the sea level will rise. Hansen has said the sea level could rise as much as 250 feet. It’s insane! Absurd!
KLC: They love talking about the area that sticks out into the Pacific-Atlantic intersection.
DJE: The shelf ice is really thin. In terms of total volume, it’s nothing, a fraction of one-percent. It doesn’t mean anything. It’s what you’d expect if you have warm ocean water. It’s impressive because it has a broad area, but it is really thin. The climate is not warmer down there, the surrounding ocean is warmer. Al Gore was quoted as saying something about talking to somebody who said it was thawing in Antarctica where it was something like 40 degrees. Someone bothered to look up the temperature. At that point on the ice cap it was 47 below zero. The caller was down on the coast someplace by the nice warm ocean water.
Look at Greenland. Both Gore and Hansen talk about glaciers “sliding into the sea.” That’s crazy. No glaciologist in the world would subscribe to that nonsense. Glaciers don’t do that. Two-mile thick ice, almost three-miles thick in Antarctica, flows like really thick taffy, and it doesn’t slide anywhere. It’s like saying Pike’s Peak is going to slide into the Gulf of Mexico—it isn’t going to happen.
KLC: They can’t talk about the Arctic, they have to talk about ice on land, Greenland for example.
DJE: There are no glaciers in the Arctic. There’s a big noise that Gore and Hansen made about melting in Greenland. There is melting along the edges, but the ice is growing in the middle, like Antarctica. To discuss Greenland temperatures—we had global warming from the turn of the century to the 1940’s, then Greenland experienced the same global cooling that everyone else did from 1945 to about 1977 and it’s been warming since then. The interesting thing is, it was warmer in Greenland in the 1930’s than it is right now. They’re saying it’s never happened before? It happened in the 1930’s.
KLC: Speaking of Greenland, I’m curious about your take as a geologist about what you see as a driving factor. From my reading I know you believe there is a correlation with solar cycles, but I’m curious about the geothermal heating.
DJE: The temperature is too variable to be accounted for by volcanic activity. Aerosols from eruptions last about two years, and then they’re done. With regard to geothermal heating, there is geothermal activity in Greenland that may be contributing to the melt, but I suspect the root cause of melting around the edges is ocean surface temperature. We’re in a global warming period, so what do you expect to happen?
I plotted a curve from isotopes in Greenland. Oxygen isotope ratios give us ambient air temperature in the snowfall. The isotope signature doesn’t change, so you can core ice and examine annual dust layers that mark the ablation surface in the summer when the dust settles on it. You can identify the melt season very accurately and go back for thousands of years with one or two year accuracy. The chronology is very accurate. We don’t have it in the Antarctic, but we have it in Greenland. I plotted the Oxygen 18 ratios and they show times when the temperature was warmer and colder. The cool periods are about 30 years apart, which means the same thing we saw in the last century has been going on for 500 years. It’s nothing new.
Let’s discuss today versus the past. During the Medieval Warm Period [MWP], about 900AD to about 1300AD, climates were warmer than they are now. One thing Gore talks about is the so-called hockey stick, a curve made by [Michael] Mann, a tree ring specialist. He essentially shows flat temperatures until we get to the increase in CO2 where the temperature takes off, so it looks like a hockey stick. His data was examined by a panel of scientists and found to be totally spurious; they said it is not scientifically sound and threw it out. The reality is, temperatures go up and down in a regular pattern; Temperature isn’t flat.
Fagan [Brian M. Fagan, The Little Ice Age: How Climate Made History 1300-1850] wrote about the Little Ice Age and the Medieval Warm Period. He confirms much of the evidence about glaciers that had been way down–valley, then retreated way up-valley in the Medieval Warm Period, which was warmer than now. Then the temperature plummeted about four degrees in about 20 years. Boom! They went from a time when people in Europe were thriving; for example, there were colonies in Greenland and they made a lot of wine in England and shipped it to France. Suddenly, we’re in this Little Ice Age and a third of the population perished in Europe, not all from starvation–there was plague and a lot of other things that were made worse by the famine.
We were warm from 900 to about 1300 when we started the Little Ice Age. In 1609, Galileo perfected the telescope and could see sunspots for the first time so scientists began recording sunspot numbers. The number was very small. There is a direct correlation between sunspots and solar irradiance, the energy we get from the sun.
The current sunspots are in Cycle 23. Astronomers predict the start of Solar Cycle 24 soon but they keep shifting the curve because it’s not happening. Normally you have more than a hundred sunspots per year and we’re near zero right now. Cycle 24 was supposed to begin in March, then they pushed it back to May and some people are saying they’ll push it back until September or even 2010.
KLC: What do you think, Don?
DJE: I don’t know and there is no way to predict it. Look what’s happening to sunspots and to temperature. There is good correlation between sunspots and global temperatures.
How do you explain increasing atmospheric CO2 when we had global cooling from 1950 to 1977? Prior to that, you go from cooling to warming without any change in CO2 at all.
Here’s the answer to the hockey stick: temperatures from the Greenland ice cores take us back about 15,000 years and show our current period, the Little Ice Age and the Medieval Warm Period. We have had increases of up to 23 degrees in a century and the same amount of cooling, and another increase of 20 degrees of warming in a century. The idea we’ve never seen changes in global temperature like recent changes is totally fraudulent. But Gore still says it. There was a big dip 8,200 years ago, showing about 2 per mil Oxygen 18 change, which is equivalent to a few degrees cooling, but nothing like the Ice Ages. There was a cold period that peaked in 1890. The isotopes follow the recorded temperature, which is a check on how accurate the isotope readings are.
In 1609 when Galileo perfected the telescope, allowing sun spots to be observed for the first time. Generally, the sun will have 50 to 100 sunspots, but during the Maunder Minimum, virtually no sunspots were recorded. During the global cool period from 1945 to 1977, the warm period of the last thirty years, and the 1890 cold period, sunspot activity mirrors global temperatures almost exactly. The curves dance together. I can’t imagine anything tighter.
KLC: What about the claim by Hansen and others that TSI [Total Solar Irradiance] has been unchanged for 80 years, thus it cannot explain recent global warming?
DJE: Not true. If you look at the data coming out, you see a strong correlation between global temperature and irradiance. If you plot irradiance versus sunspots, you again get the same kind of curve, and the inference is you can connect these curves to recognize a link between global temperatures and the sunspot cycle. We only have satellite measurements back to about 1970, thirty-some years of data, and the change is about a tenth of one-percent. That’s more than the eight one-thousandths of a percent of CO2 change, so they say the TSI change is not enough?
The argument I make is that the correlation between sunspot activity and temperature is not fortuitous–it can’t be. There must be a cause and effect relationship. We don’t know what the connection is, but it is obvious that a small change in solar irradiance produces a big climate change. It’s leveraged by something, maybe by water vapor. We’re not sure. The argument that it’s not big enough? A friend of mine has a saying which I love. “If it happened, then it must be possible.” Well, it happened, so it must be possible.
KLC: The AGW crowd uses the same argument, CO2 rose and temperatures increased. It happened.
DJE: Only in the last 30 years–before that you have the opposite of correlation. There is correspondence between solar activity and global climate. We don’t understand the connection and the leverage and it doesn’t seem like it should be enough, but it is enough. The Little Ice Age overlaps the Maunder Minimum low solar irradiance, not measured directly because we don’t have direct measurements of solar irradiance from back then, but when you have a change in solar irradiance, you change the amount of Beryllium-10 and radiocarbon produced in the upper atmosphere, so you can use those measurements in ice cores as a proxy for solar irradiance and sunspot cycles. Correlation over the known period of observation establishes the linkage. Fluctuation in radiocarbon and Beryllium-10 from the upper atmosphere shows the change in the amount of solar radiation. The Dalton Minimum occurred in about 1830. 1890 had a TSI minimum and then here’s 1945 to 1977, the correlation is there too. No one argues that the LIA [Little Ice Age] was not caused by a change in solar irradiance represented by the Maunder Minimum. If that’s certain, then why not the others, including the current warming period? There is a strong case for solar control. At a symposium in Oslo in August, a scientists will present papers spelling out the relationship between global climate change and solar changes. A growing number of scientists, especially astrophysicists, are convinced the climate driver is solar, not CO2.
The IPCC predictions are up to ten degrees hotter by the end of the century. My predictions show a rise of about half a degree. Let’s place a checkpoint at 2011. IPCC needs to see another degree of increase or they’re wrong.
KLC: They’ll move the prediction around…
DJE: Every year they recalibrate their computer model and put in the observed temperature. So, as they go along, the curve that trails behind is perfect. It’s like predicting the morning’s weather at six-o’clock in the evening.
KLC: They call it hind-casting. It’s clever. Use the same model, but reset the starting point each year.
DJE: They published their projection, so I’ll hold them to it.
KLC: They’re slippery. I look at it from an engineering standpoint and so much of it seems absurd. I don’t understand how they get away with it. Mass psychology and herd instinct?
DJE: Do you know what drives them? Money.
KLC: You’re talking about research grant money?
DJE: I’m talking about money, period. Before he started all this, Al Gore was reported to be worth a few million dollars. Now he is reported to be worth 100 million dollars and is reported to have a slush fund of about five billion dollars. If you’re in the press and you want to attend one of his lectures, you can’t. Not only can you not ask questions, they won’t let you in. Because the debate is over, you see. You’d just be a troublemaker. You know about the Bali-100? [A letter disputing the findings of the IPCC sent to the UN Secretary-General and signed by 100 scientists]
KLC: Yes.
DJE: You know about the 400 consensus breakers? [400 scientists voicing objections to so-called "consensus" on human-caused global warming. These scientists are listed in a report issued by Sen. James Inhofe, R-Okla, who is on the U.S. Senate Environment and Public Works Committee]
KLC: Yes.
DJE: There’s a new one called the Manhattan Declaration… [The Manhattan Declaration comes from the 2008 International Conference on Climate Change and suggests world leaders reject views expressed by the IPCC and that all taxes, regulations, and other interventions intended to reduce emissions of CO2 be abandoned]
KLC: Don, you know they’re all in the pocket of big-oil. They believe in a flat earth.
DJE: I get so much Bush oil money that I’m embarrassed to go to the bank. I push a wheelbarrow.
KLC: I note you’re carrying a Conoco–Phillips bag…
DJE: So I am. It’s from a GSA meeting. It also has Halliburton on it. For the record, I’ve never taken a nickel from any industry. It’s the first thing interviewers ask. I’m making a lot of new friends to the right of political center because they love what I have to say. The thing they love most is that I’ve never taken a nickel from industry and I’m not a Republican, so I must be pure of heart.
KLC: It’s too bad it has to be so political. I’m just interested in the science.
DJE: Al Gore makes a hundred-million dollars? He has five-billion in his slush fund? Look at [U.S. Senator] Barbara Boxer, she sponsored a bill for carbon cap and trade [Sanders/Boxer Global Warming Bill S.309]. Who will benefit from hundreds of billions of dollars for administering a scheme like that?
The other thing is research funding. The U.S. spends about two-billion dollars a year on research. Right now, if you submit anything that says CO2 is not the bad guy, you won’t have a chance of getting funding. It all goes to the CO2 people who build little fiefdoms; they have grant money coming out of their ears. They mimic Al Gore and say the debate is over. The last I heard, the U.S. plans to increase its research spending to 3.5 billion dollars, virtually all of which goes into CO2 research.
The last part of this equation is the news media...