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All Articles Tagged As: ice cores
Climate researchers at the Alfred Wegener Institute for Polar and Marine Research in the Helmholtz Association expand a prevalent theory regarding the development of ice ages. In the current issue of the journal Nature, three physicists from AWI's working group "Dynamics of the Palaeoclimate" present new calculations on the connection between natural insulation and long-term changes in global climate activity.
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 | On Friday, Jan. 28 in Antarctica, a research team investigating the last 100,000 years of Earth's climate history reached an important milestone completing the main ice core to a depth of 3,331 meters (10,928 feet) at West Antarctic Ice Sheet Divide. The project will be completed over the next two years with some additional coring and borehole logging to obtain additional information and samples of the ice for the study of the climate record contained in the core. ...> Full Article |
 | An international science team involving the University of Colorado at Boulder that is working on the North Greenland Eemian Ice Drilling project hit bedrock July 27 after two summers of work, drilling down more than 1.5 miles in an effort to help assess the risks of abrupt future climate change on Earth. ...> Full Article |
 | A new core drilled through an ice field on the Antarctic Peninsula may contain ice dating back into the last ice age. If so, that record should give new insight into past global climate changes. The expedition in early winter to the Bruce Plateau, an ice field straddling a narrow ridge on the northernmost tongue of the southernmost continent, yielded a core that was 445.6 meters (1,462 feet) long, the longest yet recovered from that region of Antarctica. ...> Full Article |
In the film "The Day After Tomorrow," the world enters the icy grip of a new glacial period within the space of just a few weeks. New research supported by the European Science Foundation shows this scenario may not be so far from the truth after all.
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 | Researchers spent two months this summer high in the Peruvian Andes and brought back two cores, the longest ever drilled from ice fields in the tropics. Ohio State glaciologist Lonnie Thompson said that this latest expedition focused on a yet-to-be-named ice field 5,364m above sea level in the Cordillera Blanca mountain range. ...> Full Article |
 | Not that long ago -- the blink of a geologic eye -- global temperatures were so warm that ice on Greenland could have been hard to come by. Today, the largest island in the world is covered with ice 1.6 miles thick. Even so, Greenland has become a hot spot for climate scientists. Why? Because tiny bubbles trapped in the ice layers may help resolve a fundamental question about global warming: how fast and how much will ice sheets melt? ...> Full Article |
 | Two abrupt and drastic climate events, 700 years apart and more than 45 centuries ago, are teasing scientists who are now trying to use ancient records to predict future world climate. The events -- one, a massive, long-lived drought believed to have dried large portions of Africa and Asia, and the other, a rapid cooling that accelerated the growth of tropical glaciers -- left signals in ice cores and other geologic records from around the world. ...> Full Article |
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 | An analysis of ancient Greenland ice suggests a spike in the greenhouse gas methane about 11,600 years ago originated from wetlands rather than the ocean floor or from permafrost, a finding that is good news according to the University of Colorado at Boulder scientist who led the study. ...> Full Article |
 | When Ohio State glaciologists failed to find the expected radioactive signals in the latest core they drilled from a Himalayan ice field, they knew it meant trouble for their research. But those missing markers of radiation, remnants from atomic bomb tests a half-century ago, foretell much greater threat to the half-billion or more people living downstream of that vast mountain range. ...> Full Article |
An analysis has been completed of the global carbon cycle and climate for a 70,000 year period in the most recent Ice Age, showing a remarkable correlation between carbon dioxide levels and surprisingly abrupt changes in climate.
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 | Coal burning in Northern Hemisphere leaves potentially harmful heavy metal legacy ...> Full Article |
 | A 150-meter ice core pulled from the McCall Glacier in the Arctic National Wildlife Refuge this summer may offer researchers their first quantitative look at up to two centuries of climate change in the region. ...> Full Article |
 | Scientists have discovered how volatile metals from volcanoes end up in polar ice cores. ...> Full Article |
 | New, extremely detailed data from investigations of ice cores from Greenland show that the climate shifted very suddenly and changed fundamentally during quite few years when the ice age ended. ...> Full Article |
 | Scientists have discovered a new ultra-small species of bacteria that has survived for more than 120,000 years within the ice of a Greenland glacier at a depth of nearly two miles ...> Full Article |
The newest analysis of trace gases trapped in Antarctic ice cores now provide a reasonable view of greenhouse gas concentrations as much as 800,000 years into the past, and are further confirming the link between greenhouse gas levels and global warming
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 | Ice cores from Antarctica show both the lowest atmospheric content of CO2 (carbon dioxide) and fast changes in the content of CH4 (methane) measured over the past 800,000 years. ...> Full Article |
 | Scientists on the second leg of a multi-year mission to recover ice cores from glaciers in the Alaska wilderness ...> Full Article |
 | Ice core scientists from the British Antarctic Survey (BAS) are joint winners of a major European science prize. The European Project for Ice Coring in Antarctica (EPICA) - which retrieved two deep ice cores that have revealed how Earth's climate behaved over the last 800,000 years - is one of three projects to be awarded the 2007 Descartes Prize for excellence in collaborative research. Three winning trans-national research teams share this year's Descartes Prize of 1.36 million Euros. The prize is awarded annually to teams which have achieved outstanding scientific or technological results through collaborative research in any field of science. ...> Full Article |
 | Researchers hope to shed light on proposed manmade climate 'repairs' ...> Full Article |
 | More evidence of changing weather patterns around the Antarctic Peninsula - a region where climate has changed rapidly over the last 50 years - is published this month in Geophysical Research Letters (online). ...> Full Article |
 | After enduring months on the coldest, driest and windiest continent on Earth, researchers today closed out the inaugural season on an unprecedented, multi-year effort to retrieve the most detailed record of greenhouse gases in Earth's atmosphere over the last 100,000 years. ...> Full Article |
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