Senin, 22 April 2013

Ebook Download The Two-Mile Time Machine: Ice Cores, Abrupt Climate Change, and Our Future

Ebook Download The Two-Mile Time Machine: Ice Cores, Abrupt Climate Change, and Our Future

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The Two-Mile Time Machine: Ice Cores, Abrupt Climate Change, and Our Future

The Two-Mile Time Machine: Ice Cores, Abrupt Climate Change, and Our Future


The Two-Mile Time Machine: Ice Cores, Abrupt Climate Change, and Our Future


Ebook Download The Two-Mile Time Machine: Ice Cores, Abrupt Climate Change, and Our Future

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The Two-Mile Time Machine: Ice Cores, Abrupt Climate Change, and Our Future

Review

"Winner of the 2001 Book Award in Science, Phi Beta Kappa""One of Choices Outstanding Academic Titles for 2001""Although not all scientists will agree with Alley's conclusions, [this] engaging book--a brilliant combination of scientific thriller, memoir and environmental science--provides instructive glimpses into our climatic past and global future . . ." (Publisher's Weekly)"Alley's . . . striking finding is that the earth's climate has always been wildly variable and subject to dramatic swings--except during the past 10,000 years. So the period during which humankind has established itself across the globe and made the transition from grubby bands of hunter-gatherers to the dubious majesty of global capitalism corresponds exactly to a freakishly stable period in the earth's climate."---Angus Clarke, The Times of London"With a highly readable style designed to capture and stimulate the imagination of his students, Alley explains some of the complexities of Earth system science with a minimum of jargon. This book is not just for students: it will be readily accessible to a wide audience that should be aware of its contents."---David Peel, New Scientist"[A] provocative little book . . . a compelling tale of climate sleuthing . . .[Alley] is authoritative without being dogmatic, concerned without being alarmist."---Robert C. Cowen, Christian Science Monitor"A fascinating journey into the geologic past and the history of the Earth's climate . . . Alley ends his entertaining book by polishing his crystal ball, envisioning what the future climate will be, and what we might do about it."---J.A. Rial, American Scientist"A superlative account of a complex topic . . . It is refreshingly straightforward to read, often humorous, yet still deadly serious, complete with anecdotes and understandable explanations of complex processes." (Choice)"Books in which scientists write about their professional experience and describe in lay terms the stuff that makes them excited about science rarely disappoint. Richard Alley's The Two Mile Time Machine is no exception. It describes a fascinating journey into the geologic past and the history of the Earth's climate. . . . Alley ends his entertaining book by polishing his crystal ball, envisioning what the future climate will be, and what we might do about it."---J.A. Rial, American Scientist"[A] superb book. . . . Alley demonstrates that the scientific understanding of climate is both a lot more complex, and a lot simpler, than public perceptions might indicate. . . .The Two-Mile Time Machine restores some of the joy of discovery that has always been present in scientific work, but is often lost amidst today's furious research pace and compressed news cycles."---Cathering H. Crouch, Books and Culture

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From the Back Cover

"The Two-Mile Time Machine takes a story that has been much discussed in the press and revitalizes it with the author's infectious enthusiasm and with background information on the history of ice core drilling. It provides an excellent survey for the general reader and those interested in the history of scientific exploration and issues related to science and society."--Thomas J. Crowley, Texas A & M University"Richard Alley takes the reader from the rationale for the study of ice sheets to the story of how ice cores are recovered and how we read the climate and environment of the past recorded therein. He does a good job putting his message on the human time scale and makes his information accessible to the general reader."--Lonnie G. Thompson, The Ohio State University

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Product details

Paperback: 240 pages

Publisher: Princeton University Press; Reprint edition (July 21, 2002)

Language: English

ISBN-10: 0691102961

ISBN-13: 978-0691102962

Product Dimensions:

6 x 0.5 x 8.8 inches

Shipping Weight: 12 ounces

Average Customer Review:

3.9 out of 5 stars

34 customer reviews

Amazon Best Sellers Rank:

#320,781 in Books (See Top 100 in Books)

No one can dispute Alley's credentials in climatology. He is one of the most experienced in glaciology which is where most of what we know about the history of climate comes from. Here in plain language he describes how climate works and how drilling into ice tells us about climate's past. That past reveals larger and faster changes than civilized man has ever seen. The causes are many and complex. But we are far from knowing all of those causes and how they react with each other. We can be certain, however that significant climate change is not the result of a simplistic phenomenon.Alley writes as a scientist, not as a politician or advocate. He welcomes dissent and like all good scientists realizes that it is the road to progress. Try this. "What are the odds that natural or human activities will trigger an abrupt climate change big enough, fast enough, and soon enough to matter in economic discussions? The simple answer again is that we do not know." .... "Much knowledge is needed before we can begin to predict the known light switch, and it remains possible, though unproven, that "chaos" in the system will render such predictions difficult or impossible". "Nature certainly can start the climate jumping again. But can humans? The answer is 'maybe".I have read dozens of books on climate change and have studied it for nineteen years. If you want the best general book on this subject, one that tries to make a complex science understandable, that even uses real humor, then read this. It is a book that is clear on its science. That is so because it is not dirtied up with politics, social advocacy or secular religion. After reading it, think for yourself. Then you will realize that scientific forecasts for the future of climate are merely the opinions of some scientists and those opinions are all over the place.Opinions are not science. Clear, falsifiable conclusions based on real evidence are. Such does not exist for the future of our climate. One should not confuse the elevation of some scientific opinion to authority with science itself. Science arose in opposition to authority. If you are truly interested in the real nature and status of the science of climate, read this.

The Two-Mile Time Machine is a fascinating look into one of the most important scientific endeavors in recent history, the extraction of a two-mile ice core in Greenland that gives us clues to the past earth climate, with some startling revelations on how climate has changed abruptly in the past, and could do so in the near future. Very well-written first-hand account that's easy to read, steering clear of dense technical jargon that has hampered similar books.If you are interested in learning more about global warming and climate change, this book is valuable background information on some of the science behind why scientists have made the recent global warming predictions that give concern about abrupt climate change, tipping points, and positive feedback cycles. This book, however, steers clear of making any bold predictions. It's a very even, balanced look at the results of the Greenland ice core analysis.

This book is another step in our growing realization that the climate is prone to very sudden changes. Our present Holocene period from the end of the last glacial, 11000 years ago has been remarkably stable, albeit with some small changes which had large effects on our societies. Changes in the past have been much more extreme. We are also much more vulnerable to such changes than we were when the little ones of the Holocene occurred. The only thing I find missing in this book is a detailed time line as expressed in the ice cores. Along with the sediment cores from El'gygytgyn, we are getting to the point where a pretty detailed time line of past climate change is possible

This is fascinating stuff and is very readable for the non-professional earth scientist, but written by one of the foremost scientists in the field. The Two-Mile Time Machine is a two-mile ice core from Greenland, and what scientists can conclude from it. Any amateur with a good interest in earth science and climate change over the past 400,000 years will find this a very readable account of how ice cores can be deciphered to read past climates over that time-span. Unfortunately, this book is a bit out-of-date with regard to the current state of the global warming debate. Atmospheric CO2 has risen since this book was published, thus the reader will not read that CO2 levels are now well above the peaks of the past 400,000 years. When this book was published the level was no higher than past peaks, and as these past peaks always presaged an on-coming ice-age, the author proffers the speculative prediction that we could quite suddenly descend into a new ice-age. This prediction is based on the remarkable observation which came from these ice cores that the onset of past ice ages are timed perfectly with the wobbles and eccentricities in the Earth's orbit, as argued by Milutin Milankovitch, a Serbian mathematician, in the 1920s. My one negative is the graphs are at too small a scale ro read any fine detail, and in particular the important details of the past millenium. Otherwise, this is a 'must read' for anybody who is interested in past climates, climate change and ice-ages.

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