You know, I've noticed a trend. It seems that quote a few of the "skeptic" scientists are geologists. The AGW fans will typically automatically discount them because, well, geologists are often employed as mineral explorers, and quite often searching for fossil fuels.I think there may be something different though. I think geologists and climatologists may simply have radically different views of how natural phenomena work and interact. Geologists look at rocks and consider how the environment went through radical changes over millions of years - sedimentary rocks with fish fossils on top of mountains, fossils of lush vegetation in deserts, etc. The very nature of geology forces one to think about time-scales of millions of years.Climatologists, on the other hand, only have instrumental record dating back 150 years, and proxy data going back a thousand years - a fraction of what geologists think about. Moreso, climatologists are concerned about a temp change rate of roughly 1.5 deg C/century - again, a very small fraction of what geologists have observed.I don't think either set is necessarily wrong, but I think that both sides maybe see what they want to see and think the way they are trained to think, and that is a large source of disagreement on the issue. Bottom line though - when you read that McIntyre has a geology background, that shouldn't automatically mean his perspective is tainted.Bueno - I know you are a geologist. Is this fairly accurate?
...and a majority of meterologists (who think in very short ime frames) are also skeptics. I'd love to see the data on archeologists, as they too have a perspective on climate change. astronomers too.I am using AGW to mean anthropomorhic global warming, not anti-global warming, so don't get confused.There is overlap between geologists and climatologists. If you look at ice cores (see the Hockey Stick over Time Youtube video), you'll see that even in a historic sense, the latest increase in global temperature is noise compared to the overall signal. Ice cores (which the GW crowd uses when it suits them and ignores when it doesn't) show remarkable short-term variations in temperature not only in geologic, but in a historic timeframe. Is that honest science, to only use the data when it supports your theory? Perhaps not, but you would be surprised how prevalent that is.The ice cores bring up an interesting point about the politics of the scientists involved in investigating GW. Several months ago NCCommish posted a reference to a paper discounting the Medieval Maximum. The conclusions of that paper were pretty damn weak, and, IMO, that paper should not have been published. But anything can get published these days, even in peer-reviewed liteature. Hell, I have a peer-reviewed paper published in the Biological Society of Washington's publication (it was about geologic controls of hot springs off of San Pedro, in LA county. Biologists were interested because there are megabacterial growths associated with the springs). and it was co-authored with a scuba diver, because I don't dive and frankly, it wasn't my best work. (I did it on a bet that I could do it.) I've also reviewed and rejected papers for Economic Geology that have ended up appearing elsewhere. Bottom line is how and where many papers get published depends on politics and friendships almost more so than on quality of the science. Ouch - I digressed. Sorry. Back to ice cores. Ice cores and ancedotal history say the Medieval Maximum was real. The paper NCC cited examined trees (I think it was) in the southern hemisphere and concluded there was no evidence of climate change during the Medieval Maximumand therefore it didn't happen. Well if the northern hemisphere got warmer and the southern hemisphere stayed the same, I guess the planet on average must have gotten warmer right? But that simple logic seems to escape the pro-AGW crowd. Ice cores were ignored, I guess.Now it is human nature to see what one wants to see, and I think we are seeing that with a lot of the AGW crowd. But it is bad science. The argument that the hockey stick is unprecedented is also dishonest in a historic as well as geologic sense. There were obviously some pretty steep warming periods, even in the historic period. Lots steeper than the hockey stick. You can see it in the ice core graphs.If you look at the first hockey stick graph on that YouTube piece, you'll see a warming trend centered about 1700. In the 1600s, a missionary wrote that the forests were so dense between San Luis Potosi and Zacatecas in Mexico that they blotted out the sun. You could ride between the two cities and not see the sun for days at a time. Now I think that is probably an exaggeration, but I don't doubt that there were huge forests in Mexico during that period. The timber frames in the old mines thaat I have reopened - the 400 year old wood doors on the older building in those two cities, had to come from somewhere nearby. But there is archeological evidence too. In Zacatecas, the Spaniards built Roman-style aquaducts to transport water from a river to the city. They built covered aquaducts to divert perennial streams around mine openings so they wouldn't flood. Along one river, they built patios where they amalgamated silver using mercury, then dumped the processed material into the river. The river washed the mercury-laden material into a nearby lake, and then from the lake downstream where rivers deposited this contaminated material onto the flood plain in deposits up to two meters thick. This created one of the largest mercury-contaminated areas in the entire world.Then between 1680 and 1720, the climate changed. The rivers dried up and the forests died. There are people, aurprisingly, that blame deforestation on the Spaniards, as wood was used to support bad areas in the mines and for cooking and heating. The argument just doesn't hold water though - too many trees and not enough Spaniards. Today, the river is gone, and is barely a trickle in the rainy season, even after a heavy thunderstorm. The lake dried up. There is actually a company that processes the downstream contaminated deposits to recover more silver (and mercury), charging the farmers a fee to remove contaminated soil and also selling the silver and mercury recovered. The climate change lowered the hydrologic baseline and now arroyos cut into the areas that were once lush flood plains. The trees are gone and we have deserts filled with various species of creosote, succulents, cactus and and other desert species instead.Climate change - global warming. Obvious in the historic/archeological record and detectable in ice cores. And a geologist can think about it, and consider the evidence. Carbon dioxide increase from AGW in 1680-1720? I think not. Again, this popular foundation (CO2) that AGW proponents cite doesn't hold up to closer scrutiny.The solar cycle has been mentioned before in these threads. It has been noted that GW corresponds very closely to the solar cycle, more so that to variations in CO2 does. It has also been noted that increases in CO2 in the atmosphere tend to happen after warming begins rather than preceeding it. The AGW crowd tends to discount the solar cycle by saying that the change in energy incident on the planet cannot acount for the increase in observed temperature. In this case they have a point, but they may also be missing a very important point too. What changes would an increase in solar radiation have on the planet that might trigger a response. Obviously, looking at the data, the increae in solar radiation may explain atmospheric CO2 variation. So what causes that? We don't know. We know the earth as many buffering systems, some that we don't quite understand. For example, why has ocean salinity remained constant over geologic time while rivers are constantly and naturally) pumpng more salts into the ocean, substantial amounts of water are removed from the ocean basins during glacial periods, etc.? The answer is there for those who look for it. But you never hear the AGW crowd talk about how the earth may have natural buffering systems that may actually reduce or correct variations in greenhouse gases. You do hear them talk about how long CO2 stays in the atmosphere compared to that other greenhouse gas (dihydrogen oxide). This might be a difference between the way geologists and climatologists think - I don't know. I do knbow that climatologists like to talk more about theoretical "tipping points" than they do about buffer systems.Basically, IMO the AGW crowd looks for AGW and doesn't consider the big picture. They also tend to try to discount or discredit data that doesn't agree with their hypotheses. Again, this is human nature and we all do it. Those who expect scientists not to do so hold scientists in higher esteem than what is deserved.Damn, I wrote a book and only part of it deals with our question. The short answer to your question, I think is that geologic training does not prohibit a person from thinking in shorter time frames. There may be a problem for people trained to think in shorter time frames to think in the other direction. Ten million years is a hard thing to comprehand, even for a lot of geologists. 100 million years even more so. I don't know how climatologists tend to think with regard to large time frames.What I do know is that we have seen periods in the historic past where we have had climate change. It sometimes has happened very quickly and it sometimes has changed ecosystems. But life on earth adapted, and the human species survived (though maybe certain tribes had to invade other homelands in order to do so - why did the Cimbri migrate from Jutland (probably) into Roman territory looking for a new place to live? Is coastal flooding caused by "global warming" the reason?) Given what I can see in geologic and historic (or archeologic if you prefer) records, I think that even if there is AGW contributing somewhat to climate change, we are getting far too upset by it.This doesn't mean we shouldn't plan for a post-fossil fuel world. Someday, fossil fuels will be exhausted. I happen to think that day is still a long ways away, while others, IMO, discount how effective geologist can and will be in the discovery procress. Somewhere on my bookshelf I have a pamphlet written by credible sources back in 1975ish about the mineral position of the United States. That pamphet predicted we would be out of most commodities, and raised a big red flag on some of them. One of the comoidities that would presumably be exhausted was molybdenum. We are swimming in molybdenum. So I've seen the alarm bells before. Again, I think it is all part of human nature. As if we don't have enough to worry about or fight over.It also doesn't mean we shouldn't be good stewarts of our planets. I doubt anyone today would condone a company doing what the Spaniards did in Zacatecas. Cutting down on pollutants, where we can is a good thing.I do think though, that we should be putting more emphasis on basic research into the geology and geochemistry of things like neodynium and tellurium, so we have some science behind the process of exploring for those minerals. We can't have wind or solar someday without abundant supplies of both those metals. (See, where you stand does depends on where you sit!)
