News tagged with ice core
Past regional cold and warm periods linked to natural climate drivers
Space & Earth / Earth Sciences
12 hours ago |
3.6 / 5 (9) |
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Intervals of regional warmth and cold in the past are linked to the El Niño phenomenon and the so-called "North Atlantic Oscillation" in the Northern hemisphere's jet stream, according to a team of climate scientists. These ...
Mysteriously warm times in Antarctica
Space & Earth / Earth Sciences
Nov 18, 2009 |
4.2 / 5 (26) |
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(PhysOrg.com) -- A new study of Antarctica's past climate reveals that temperatures during the warm periods between ice ages (interglacials) may have been higher than previously thought. The latest analysis ...
Newly drilled ice cores may be the longest taken from the Andes
Space & Earth / Earth Sciences
Nov 02, 2009 |
3.7 / 5 (3) |
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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.
Previously Unknown Volcanic Eruption Helped Trigger Cold Decade
Space & Earth / Earth Sciences
Oct 29, 2009 |
4.3 / 5 (27) |
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(PhysOrg.com) -- A team of chemists from the U.S. and France has found compelling evidence of a previously undocumented large volcanic eruption that occurred exactly 200 years ago, in 1809.
As Greenland melts
Oct 19, 2009 |
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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 ...
Arctic lake sediments show warming, unique ecological changes in recent decades
Space & Earth / Earth Sciences
Oct 19, 2009 |
4 / 5 (9) |
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An analysis of sediment cores indicates that biological and chemical changes occurring at a remote Arctic lake are unprecedented over the past 200,000 years and likely are the result of human-caused climate ...
International Greenland Ice Coring Effort Sets New Drilling Record in 2009
Space & Earth / Earth Sciences
Aug 26, 2009 |
4.5 / 5 (2) |
2
(PhysOrg.com) -- A new international research effort on the Greenland ice sheet with the University of Colorado at Boulder as the lead U.S. institution set a record for single-season deep ice-core drilling ...
Searching for an interglacial on Greenland
Space & Earth / Earth Sciences
Aug 24, 2009 |
4 / 5 (2) |
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The first season of the international drilling project NEEM (North Greenland Eemian Ice Drilling) in north-western Greenland was completed at August 20th.
Close relationship between past warming and sea-level rise
Space & Earth / Earth Sciences
Jun 22, 2009 |
3.8 / 5 (19) |
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Scientists from the National Oceanography Centre, Southampton, along with colleagues from Tuebingen and Bristol have reconstructed sea-level fluctuations over the last 520,000 years. Comparison of this record with data on ...
New proxy reveals how humans have disrupted the nitrogen cycle
Jun 04, 2009 |
2.6 / 5 (7) |
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More and more, scientists are getting a better grip on the nitrogen cycle. They are learning about sources of nitrogen and how this element changes as it loops from the nonliving, such as the atmosphere, soil ...
Wind shifts may stir CO2 from Antarctic depths
Space & Earth / Earth Sciences
Mar 12, 2009 |
4.2 / 5 (69) |
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Natural releases of carbon dioxide from the Southern Ocean due to shifting wind patterns could have amplified global warming at the end of the last ice age--and could be repeated as manmade warming proceeds, ...
Gas From the Past Gives Scientists New Insights into Climate and the Oceans
Space & Earth / Earth Sciences
Oct 03, 2008 |
3.7 / 5 (17) |
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(PhysOrg.com) -- In recent years, public discussion of climate change has included concerns that increased levels of carbon dioxide will contribute to global warming, which in turn may change the circulation ...
Greenland ice core reveals history of pollution in the Arctic
Space & Earth / Earth Sciences
Aug 19, 2008 |
3.9 / 5 (14) |
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New research, reported this week in the online early edition of the Proceedings of the National Academy of Sciences, finds that coal burning, primarily in North America and Europe, contaminated the Arctic ...
Research team draws 150-meter ice core from McCall Glacier
Space & Earth / Earth Sciences
Jul 11, 2008 |
3.5 / 5 (8) |
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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.
