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trendal
J♠



Registered: 04/17/01
Posts: 20,815
Loc: Ontario, Canada
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Global Warming - the final say, strictly scientific journals
#7777352 - 12/19/07 11:39 AM (16 years, 2 months ago) |
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I see a lot of people talking about global warming and the (apparent) number of scientific journals on the subject...but I rarely see any links to actual peer-reviewed studies!
Only post in this thread if you have a link to a peer-reviewed study on the subject of global warming.
I will remove any posts I find that do not include, at the least, a link to a peer-reviewed study.
Let this thread be for the real studies!
Try out nature.com or science.com if you don't know where to look.
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Once, men turned their thinking over to machines in the hope that this would set them free. But that only permitted other men with machines to enslave them.
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trendal
J♠



Registered: 04/17/01
Posts: 20,815
Loc: Ontario, Canada
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Re: Global Warming - the final say, strictly scientific journals [Re: trendal]
#7777360 - 12/19/07 11:42 AM (16 years, 2 months ago) |
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An example of what I'm looking for: (you won't be able to get the full article if you aren't a nature.com subscriber)
Atmospheric carbon dioxide linked with Mesozoic and early Cenozoic climate change
Benjamin J. Fletcher1, Stuart J. Brentnall1, Clive W. Anderson2, Robert A. Berner3 & David J. Beerling1 Top of page
The relationship between atmospheric carbon dioxide (CO2) and climate in the Quaternary period has been extensively investigated, but the role of CO2 in temperature changes during the rest of Earth's history is less clear1. The range of geological evidence for cool periods during the high CO2 Mesozoic 'greenhouse world'2, 3 of high atmospheric CO2 concentrations, indicated by models4 and fossil soils5, has been particularly difficult to interpret. Here, we present high-resolution records of Mesozoic and early Cenozoic atmospheric CO2 concentrations from a combination of carbon-isotope analyses of non-vascular plant (bryophyte) fossils and theoretical modelling6, 7. These records indicate that atmospheric CO2 rose from approx420 p.p.m.v. in the Triassic period (about 200 million years ago) to a peak of approx1,130 p.p.m.v. in the Middle Cretaceous (about 100 million years ago). Atmospheric CO2 levels then declined to approx680 p.p.m.v. by 60 million years ago. Time-series comparisons show that these variations coincide with large Mesozoic climate shifts8, 9, 10, in contrast to earlier suggestions of climate–CO2 decoupling during this interval1. These reconstructed atmospheric CO2 concentrations drop below the simulated threshold for the initiation of glaciations11 on several occasions and therefore help explain the occurrence of cold intervals in a 'greenhouse world'3.
http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo.2007.29.html
Now does anyone have a peer reviewed article going against the global warming crowd?
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Once, men turned their thinking over to machines in the hope that this would set them free. But that only permitted other men with machines to enslave them.
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Silversoul
Rhizome


Registered: 01/01/05
Posts: 23,576
Loc: The Barricades
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Re: Global Warming - the final say, strictly scientific journals [Re: trendal]
#7777497 - 12/19/07 12:29 PM (16 years, 2 months ago) |
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Beyond Global Warming: Ecology and Global Change Peter M. Vitousek Ecology, Vol. 75, No. 7 (Oct., 1994), pp. 1861-1876 doi:10.2307/1941591 This article consists of 16 page(s).
Abstract
While ecologists involved in management or policy often are advised to learn to deal with uncertainty, there are a number of components of global environmental change of which we are certain--certain that they are going on, and certain that they are human-caused. Some of these are largely ecological changes, and all have important ecological consequences. Three of the well-documented global changes are: increasing concentrations of carbon dioxide in the atmosphere; alterations in the biogeochemistry of the global nitrogen cycle; and ongoing land use/land cover change. Human activity--now primarily fossil fuel combustion-- has increased carbon dioxide concentrations from @?280 to 355 @mL/L since 1800; the increase is unique, at least in the past 160 000 yr, and several lines of evidence demonstrate unequivocally that it is human-caused. This increase is likely to have climatic consequences--and certainly it has direct effects on biota in all Earth's terrestrial ecosystems. The global nitrogen cycle has been altered by human activity to such an extent that more nitrogen is fixed annually by humanity (primarily for nitrogen fertilizer, also by legume crops and as a by product of fossil fuel combustion) than by all natural pathways combined. This added nitrogen alters the chemistry of the atmosphere and of aquatic ecosystems, contributes to eutrophiction of the biosphere, and has substantial regional effects on biological diversity in the most affected areas. Finally, human land use/land cover change has transformed one-their to one-half of Earth's ice-free surface. This in and of itself probably represents the most important component of global change now and will for some decades to come; it has profound effects on biological diversity on land and on ecosystems downwind and downstream of affected areas. Overall, any clear dichotomy between pristine ecosystems and human-altered areas that may have existed in the past has vanished, and ecological research should account for this reality. These three and other equally certain components of global environmental change are the primary causes of anticipated changes in climate, and of ongoing losses of biological diversity. They are caused in turn by the extraordinary growth in size and resource use of the human population. On a broad scale, there is little uncertainty about any of these components of change or their causes. However, much of the public believes the causes--even the existence--of global change to be uncertain and contentious topics. By speaking out effectively, we can help to shift the focus of public discussion towards what can and should be done about global environmental change.
link
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Madtowntripper
Sun-Beams out of Cucumbers



Registered: 03/06/03
Posts: 21,287
Loc: The Ocean of Notions
Last seen: 6 months, 11 days
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Re: Global Warming - the final say, strictly scientific journals [Re: Silversoul]
#7777544 - 12/19/07 12:46 PM (16 years, 2 months ago) |
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One of my professors, Dr. Margaret Fraiser is the author of this one. I'm not a believer in the whole "We Are Going To Die From Global Warming" camp, but I post this and acknowlege that Margaret is easily 20X smarter than I am.
This is just the abstract, with a link to the full text. I think its open access, but I'm at school now so I dont know if I am accessing this through the libraries Open Access program...
The paper discusses how the End-Permian mass extinction could have been caused by oceanic increases in CO2 levels. For you non-geologists, the End-Permian mass extinction is one of many global mass extinction events to have hit the Earth. There are many hypothesized causes, but nothing is proven.
Quote:
Abstract
Excessive CO2 in the Earth ocean–atmosphere system may have been a significant factor in causing the end-Permian mass extinction. CO2 injected into the atmosphere by the Siberian Traps has been postulated as a major factor leading to the end-Permian mass extinction by facilitating global warming, widespread ocean stratification, and development of anoxic, euxinic and CO2-rich deep waters. A broad incursion of this toxic deep water into the surface ocean may have caused this mass extinction. Although previous studies of the role of excessive CO2 have focused on these “bottom-up” effects emanating from the deep ocean, “top-down” effects of increasing atmosphere CO2 concentrations on ocean-surface waters and biota have not previously been explored. Passive diffusion of atmospheric CO2 into ocean-surface waters decreases the pH and CaCO3 saturation state of seawater, causing a physiological and biocalcification crisis for many marine invertebrates. While both “bottom-up” and “top-down” mechanisms may have contributed to the relatively short-term biotic devastation of the end-Permian mass extinction, such a “top-down” physiological and biocalcification crisis would have had long-term effects and might have contributed to the protracted 5- to 6-million-year-long delay in biotic recovery following this mass extinction. Earth's Modern marine biota may experience similar “top-down” CO2 stresses if anthropogenic input of atmosphere/ocean CO2 continues to rise.
Keywords: Early Triassic; CO2; Molluscs; End-Permian mass extinction; Biotic recovery; Biocalcification
The entire article can be found here.
-------------------- After one comes, through contact with it's administrators, no longer to cherish greatly the law as a remedy in abuses, then the bottle becomes a sovereign means of direct action. If you cannot throw it at least you can always drink out of it. - Ernest Hemingway If it is life that you feel you are missing I can tell you where to find it. In the law courts, in business, in government. There is nothing occurring in the streets. Nothing but a dumbshow composed of the helpless and the impotent. -Cormac MacCarthy He who learns must suffer. And even in our sleep pain that cannot forget falls drop by drop upon the heart, and in our own despair, against our will, comes wisdom to us by the awful grace of God. - Aeschylus
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