Navigation Links
Study: Did early climate impact divert a new glacial age?
Date:12/17/2008

SAN FRANCISCO The common wisdom is that the invention of the steam engine and the advent of the coal-fueled industrial age marked the beginning of human influence on global climate.

But gathering physical evidence, backed by powerful simulations on the world's most advanced computer climate models, is reshaping that view and lending strong support to the radical idea that human-induced climate change began not 200 years ago, but thousands of years ago with the onset of large-scale agriculture in Asia and extensive deforestation in Europe.

What's more, according to the same computer simulations, the cumulative effect of thousands of years of human influence on climate is preventing the world from entering a new glacial age, altering a clockwork rhythm of periodic cooling of the planet that extends back more than a million years.

"This challenges the paradigm that things began changing with the Industrial Revolution," says Stephen Vavrus, a climatologist at the University of Wisconsin-Madison's Center for Climatic Research and the Nelson Institute for Environmental Studies. "If you think about even a small rate of increase over a long period of time, it becomes important."

Addressing scientists here today (Dec. 17) at a meeting of the American Geophysical Union, Vavrus and colleagues John Kutzbach and Gwenalle Philippon provided detailed evidence in support of a controversial idea first put forward by climatologist William F. Ruddiman of the University of Virginia. That idea, debated for the past several years by climate scientists, holds that the introduction of large-scale rice agriculture in Asia, coupled with extensive deforestation in Europe began to alter world climate by pumping significant amounts of greenhouse gases methane from terraced rice paddies and carbon dioxide from burning forests into the atmosphere. In turn, a warmer atmosphere heated the oceans making them much less efficient storehouses of carbon dioxid
'/>"/>

Contact: Steve Vavrus
sjvavrus@wisc.edu
608-265-5279
University of Wisconsin-Madison
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. UNC study: Text messaging may help children fight off obesity
2. Study: Elderly Women can increase strength but still risk falls
3. Study: Wildlife need more complex travel plans
4. Study: Tropical wetlands hold more carbon than temperate marshes
5. Study: Bird diversity lessens human exposure to West Nile Virus
6. Study: urban black bears live fast, die young
7. Study: Typhoons bury tons of carbon in the oceans
8. Study: Migrant laborers valuable to horticulture industry
9. Study: Future snowmelt in West twice as early as expected; threatens ecosystems and water reserves
10. U-M study: Herceptin targets breast cancer stem cells
11. Stanford study: Bioenergy potential of reviving abandoned agricultural land
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/7/2015)... , June 30, 2015 ... announced the addition of the "Capacitive Fingerprint ... To this date, fingerprint sensing technology ... and fingerprint sensors are well developed. This patent ... technology. The domain of capacitive fingerprint ...
(Date:7/7/2015)... July 7, 2015 NXT-ID, Inc. (NASDAQ: NXTD ) ... growing mobile commerce market announces a revised version of one of ... commercial will air on CNBC in New York ... and San Francisco metro areas.    ... on Wocket,s ability to replace all the cards in your wallet ...
(Date:7/2/2015)... June 25, 2015 Research ... the "Next Generation Biometrics Market by Application, Technology, ... report to their offering. The next generation ... 2020, at a CAGR of 17.9% between 2015 and ... application for the market. Safran SA ( ...
Breaking Biology News(10 mins):Worldwide Capacitive Fingerprint Sensors Patent Landscape Market Report 2015-2020 - Main IP Holders include Seiko Epson, AuthenTec, Sony and STMicroelectronics 2Wocket Smart Wallet Commercials Airing on CNBC to Showcase This Summer's Must- Have Tech Product 2Wocket Smart Wallet Commercials Airing on CNBC to Showcase This Summer's Must- Have Tech Product 3Next Generation Biometrics Market 2015 - Global Forecast to 2020 with Safran, NEC, 3M Cogent, Fujitsu & Suprema Dominating the $24 Billion Market 2Next Generation Biometrics Market 2015 - Global Forecast to 2020 with Safran, NEC, 3M Cogent, Fujitsu & Suprema Dominating the $24 Billion Market 3
... we chew our food? Research has shown that it is not, ... enough to swallow without choking. Biomechanics, who have modelled the ... shown that we actually chew our food to ensure it is ... in January,s Physics World , Dr Roland Ennos, a biomechanic ...
... MO, January 5, 2010 With obesity rising markedly, reliance ... management strategy. Since people who are trying to reduce their ... calories" or "reduced-energy" in restaurants and supermarkets, it is essential ... in the January 2010 issue of the Journal of ...
... This release is available in French . ... Department of Biological Sciences of Universit du Qubec Montral (UQAM), ... in the field of molecular biology. They have unlocked some of ... very different from other proteins of the same type studied to ...
Cached Biology News:How people work ... and the fingerprint mystery 2Restaurant and packaged foods can have more calories than nutrition labeling indicates 2A global breakthrough in the study of a protein linked to the spread of viruses 2
(Date:7/31/2015)... ... July 31, 2015 , ... ... analysis and premium industry insights on the global resorcinol industry. The report highlights ... study of vivid market scenarios and analysis of primary and secondary inputs from ...
(Date:7/30/2015)... ... 31, 2015 , ... Ralco is honored to announce that it is the ... be held August 5-9 in Marshall. The Ralco Enrichment Center is an interactive experience ... agriculture impacts their daily lives. This unique exhibit also features a birthing center for ...
(Date:7/30/2015)... ... July 30, 2015 , ... ... Vieillard as Sales & Marketing Director. , With more than 25 years ... responsible for reinforcing Tronics’ business development activities worldwide. He brings to the company ...
(Date:7/30/2015)... ... July 30, 2015 , ... Leading ... clinical study of its canine osteoarthritis stem cell product, currently under development for ... KS) and will be marketed in the US by Aratana. This product, termed ...
Breaking Biology Technology:Resorcinol Market to Grow at 6% CAGR to 2019 Says New Research Report at ReportsnReports.com 2Resorcinol Market to Grow at 6% CAGR to 2019 Says New Research Report at ReportsnReports.com 3Resorcinol Market to Grow at 6% CAGR to 2019 Says New Research Report at ReportsnReports.com 4Ralco Announces Primary Sponsorship of Ralco Enrichment Center at Lyon County Fair 2Tronics appoints Francois Vieillard as Sales and Marketing Director 2VetStem Biopharma Successfully Completes Large Milestone Efficacy Study for its Flagship Canine Osteoarthritis Stem Cell Product 2VetStem Biopharma Successfully Completes Large Milestone Efficacy Study for its Flagship Canine Osteoarthritis Stem Cell Product 3
... in demand for nanotech tools in the coming years, ... New York consulting firm that focuses on nanotechnology. , ... that sales of nanotech tools could double to $1.1 ... on remarkable applications ranging from computer displays to cancer ...
... - Stratatech Corp. has received a $154,000 ... Aging , a division of the National Institutes of ... products for the use in the treatment of chronic skin ... pressure ulcers. , ,It is estimated that in the United ...
... MILWAUKEE -- With the new school semester just ... Marquette University, however, is hoping that illegal Internet downloading ... is the first university working with the Business ... including, Microsoft, Apple and Adobe. The BSA's Define ...
Cached Biology Technology:Corporate clients will dominate surge in nanotech tool demand, study projects 2Corporate clients will dominate surge in nanotech tool demand, study projects 3Marquette targets illegal downloading 2Marquette targets illegal downloading 3
...
For absolute protein quantification. 4 peptides in 5 vials x 2 nmol per peptide...
The PxE Thermal Cycler (PxE) is a licensed 96 well PCR machine, developed to provide all fundamental features for value for money thermal cycling....
... is Thermo Electron's most advanced personal gradient ... to use sophisticated onboard software and a ... to offer performance, accuracy and simplicity in ... of customer driven features built up on ...
Biology Products: