Ice Cores Current Events

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Ice samples from Greenland and Russia provide clues to past and future climate change
Scientists at the University of Birmingham have discovered evidence of carbonaceous aerosols -- organic dust -- transported from Asia and deposited in the Arctic over the last 450 years, according to research published Sept. 28 in the journal Nature Scientific Reports. (2015-09-28)

An ice core study to determine the timing and duration of historical climate stages
In ice core studies, accurate and precise dating is important to better constrain the timing, sequence, and duration of past climatic events. Two deep ice cores were drilled at different remote dome summits in Antarctica, Dome Fuji and Dome C, and were volcanically synchronized. A total of 1401 volcanic matching points were identified within the past 216 kyr. This work contributes to the establishment of a common time scale for all Antarctic ice cores. (2015-12-23)

Antarctic Ice Core Hints Abrupt Warming Some 12,500 Years Ago May Have Been Global
An analysis of an ancient Antarctic ice core indicates an abrupt climate warming occurred there about 12,500 years ago, an event previously thought to have primarily influenced climate in the Northern Hemisphere. (1998-10-01)

Newly drilled ice cores may be the longest taken from the Andes
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 5,364 m above sea level in the Cordillera Blanca mountain range. (2009-11-02)

Dust may settle unanswered questions on Antarctica
Dust trapped deep in Antarctic ice sheets is helping scientists unravel details of past climate change. Researchers have found that dust blown south to Antarctica from the windy plains of Patagonia -- and deposited in the ice periodically over 80,000 years -- provides vital information about glacier activity. (2009-03-29)

Tracking the amount of sea ice from the Greenland ice sheet
The Greenland ice sheet records information about Arctic climate going back more than 120.000 years. New research from the Niels Bohr Institute reveals that the ice doesn't just tell about the situation in the air and on land -- it can also tell what was happening at sea. By analyzing ice cores drilled from deep inside the Greenland ice sheet, researchers have calculated how much Arctic sea ice there was in the past. (2016-10-10)

Meltwater from the Greenland ice sheet releasing faster
The firn layers of the Greenland ice sheet might store less meltwater than previously assumed. Researchers from the USA, Denmark and the University of Zurich fear that this could lead to increased release of the meltwater into the oceans. (2016-01-04)

UMaine shares ice core technology with China
In an ongoing collaboration between the University of Maine's Climate Change Institute (CCI) and Chinese scientists, UMaine has loaned an important ice core research instrument to the Cold and Arid Regions Environment and Engineering Research Institute of the Chinese Academy of Science in Lanzhou in central China. (2004-09-16)

Greenland ice cores offer glimpse of weather system history
The recent analyses of eight ice cores drilled from the massive Greenland Ice Sheet may paint a map researchers can use to uncover the history of a massive weather machine controlling the climate around the North Atlantic basin. The boundary between two major pressure systems - the Icelandic Low and the Azores High -- controls whether storms reaching Europe are strong or weak, and whether the seasons are wetter or dryer. (2004-12-16)

The climate changed rapidly alongside sea ice decline in the north
Researchers from the Niels Bohr Institute, University of Copenhagen have, in collaboration with Norwegian researchers in the ERC Synergy project, ICE2ICE, shown that abrupt climate change occurred as a result of widespread decrease of sea ice. This scientific breakthrough concludes a long-lasting debate on the mechanisms causing abrupt climate change during the glacial period. It also documents that the cause of the swiftness and extent of sudden climate change must be found in the oceans. (2020-12-04)

New cores from glacier in the Eastern European Alps may yield new climate clues
Researchers are beginning their analysis of what are probably the first successful ice cores drilled to bedrock from a glacier in the Eastern European Alps. With luck, that analysis will yield a record of past climate and environmental changes in the region for several centuries, and perhaps even covering the last 1,000 years. (2012-01-09)

Alley to receive National Academy of Sciences award
Richard B. Alley, Evan Pugh Professor of Geosciences, is the recipient of the National Academy of Sciences Arthur L. Day Prize and Lectureship. (2014-01-20)

New ice core record will help understanding of ice ages, global warming, CU prof says
Recovery of a new ice core in Antarctica that extends back 740,000 years -- nearly twice as long as any other ice core record -- is extremely important and will help scientists better understand the Earth's climate and issues related to global warming, according to a University of Colorado at Boulder professor. (2004-06-09)

Ice-sheet variability during the last ice age from the perspective of marine sediment
By using marine sediment cores from Northwestern Australia, a Japanese team led by National Institute of Polar Research (NIPR) and the University of Tokyo revealed that the global ice sheet during the last ice age had changed in shorter time scale than previously thought. This study was published on May 10 in the journal Scientific Reports. (2019-05-15)

Melting of the Greenland ice sheet mapped
Will all of the ice on Greenland melt and flow out into the sea, bringing about a colossal rise in ocean levels on Earth, as the global temperature rises? The key concern is how stable the ice cap actually is and new Danish research from the Niels Bohr Institute at the University of Copenhagen can now show the evolution of the ice sheet 11,700 years back in time. The results are published in the esteemed journal Nature. (2009-09-16)

The least sea ice in 800 years
New research, which reconstructs the extent of ice in the sea between Greenland and Svalbard from the 13th century to the present indicates that there has never been so little sea ice as there is now. The research results from the Niels Bohr Institute, among others, are published in the scientific journal Climate Dynamics. (2009-07-01)

Ice age thermostat prevented extreme climate cooling
During the ice ages, an unidentified regulatory mechanism prevented atmospheric CO2 concentrations from falling below a level that could have led to runaway cooling, reports a study conducted by researchers of the ICTA-Universitat Autònoma de Barcelona and published online in Nature Geoscience this week. The study suggests the mechanism may have involved the biosphere, as plants and plankton struggled to grow under very low CO2 levels. (2017-03-14)

Greenland ice may exaggerate magnitude of 13,000-year-old deep freeze
Ice samples pulled from nearly a mile below the surface of Greenland glaciers have long served as a historical thermometer, adding temperature data to studies of the local conditions up to the Northern Hemisphere's climate. But the method -- comparing the ratio of oxygen isotopes buried as snow fell over millennia -- may not be such a straightforward indicator of air temperature. (2012-06-25)

Medieval diaries aid scientists ascertain increase in hot spots due to global warming
The temperature of the Northern Hemisphere has increased over a larger area in the last century than at any time in the past millennium a report published in Science reveals this week. The study finds that the number of hot spots has increased dramatically in the Northern Hemisphere in the last century compared to the past 1200 years adding to the growing evidence of wide-scale global warming. (2006-02-09)

Researchers at Stockholm University awarded the Descartes prize
The EPICA project creates unique opportunities for the extraction of climate data from two Antarctic ice cores, marking an important step towards understanding climate change. One of the ice cores contains temperature data and greenhouse gas levels from 800,000 years ago, double the timescale of previous studies. The second ice core allows the possibility of studying the relationship between the climate of the northern and southern hemispheres. (2008-03-14)

Greenland ice core project yields probable ancient plant remains
A team of international researchers working on the North Greenland Ice Core Project recently recovered what appear to be plant remnants nearly two miles below the surface between the bottom of the glacial ice and the bedrock. (2004-08-13)

Snow over Antarctica buffered sea level rise during last century
A new NASA-led study has determined that an increase in snowfall accumulation over Antarctica during the 20th century mitigated sea level rise by 0.4 inches. However, Antarctica's additional ice mass gained from snowfall makes up for just about a third of its current ice loss. (2018-12-13)

Queen's researcher finds new model of gas giant planet formation
Queen's University researcher Martin Duncan has co-authored a study that solves the mystery of how gas giants such as Jupiter and Saturn formed in the early solar system. (2015-08-19)

Proven: Historical climate changes occurred simultaneously in several parts of the world
A new study published by researchers from the University of Copenhagen and partner institutions has proven that repeated and abrupt climate changes during the last ice age occurred simultaneously in South America, Southeast Asia, Europe and Greenland. Abrupt climate change can be as problematic as gradual change and we should deal with the risks associated with abrupt scenarios, suggests a UCPH researcher. (2020-08-26)

Researchers uncover additional evidence for massive solar storms
Solar storms can be far more powerful than previously thought. A new study has found evidence for the third known case of a massive solar storm in historical times. The researchers believe that society might not be sufficiently prepared if a similar event were to happen now. (2019-03-11)

Arctic ice at low point compared to recent geologic history
Less ice covers the Arctic today than at any time in recent geologic history. That's the conclusion of an international group of researchers, who have compiled the first comprehensive history of Arctic ice. (2010-06-02)

Rapid ice retreat during last deglaciation parallels current melt rates
Imagine an ice chunk the size of Hawaii disappearing, almost instantaneously, from an ice sheet. That is what happened in the Storfjorden Through in the Arctic Ocean some 11,000 years ago. (2021-02-10)

Severity of North Pacific storms at highest point in over 1,200 years
Ice cores from Denali and Mount Logan offer insight into global climate connections and the history on intensifying storms. (2017-08-24)

Greenland's ancient forests shed light on stability of ice sheet
Ice cores drilled from southern Greenland have revealed the first evidence of a surprisingly lush forest that existed in the region within the past million years. The findings from an international study published today in the journal Science suggest that the southern Greenland ice sheet may be much more stable against rising temperatures than previously thought. (2007-07-05)

Scientist links increase in greenhouse gases to changes in ocean currents
By examining 800,000-year-old polar ice, scientists increasingly are learning how the climate has changed since the last ice melt and that carbon dioxide has become more abundant in the Earth's atmosphere. (2010-06-18)

Antarctic snow inaccurate temperature archive
According to Dutch researcher Michiel Helsen, annual and seasonal temperature fluctuations are not accurately recorded in the composition of the snow of Antarctica. His research into the isotopic composition of the Antarctic snow has exposed the complexity of climate reconstructions. (2006-02-15)

Discovery of 1,800-year-old 'Rosetta Stone' for tropical ice cores
In the Apr. 4, 2013 edition of Science Express, researchers at The Ohio State University describe the first annually resolved ice core (2013-04-04)

Bedrock is a milestone in climate research
After years of concentrated effort, scientists from the North Greenland Eemian Ice Drilling project hit bedrock more than 8,300 feet below the surface of the Greenland ice sheet last week. The project has yielded ice core samples that may offer valuable insights into how the world can change during periods of abrupt warming. (2010-08-04)

Improved interpretation of volcanic traces in ice
How severely have volcanoes contaminated the atmosphere with sulfur particles in past millennia? To answer this question, scientists use ice cores, among others, as climate archives. Atmospheric scientists from the GEOMAR Helmholtz Centre for Ocean Research Kiel and the Max Planck Institute for Meteorology in Hamburg have now modeled the global distribution of sulfur particles following large eruptions. The study could significantly improve the interpretation of ice cores. (2013-07-08)

New ice cores expand view of climate history
Two new studies of gases trapped in Antarctic ice cores have extended the record of Earth's past climate almost 50 percent further, adding another 210,000 years of definitive data about the makeup of the Earth's atmosphere and providing more evidence of current atmospheric change. (2005-11-24)

North American ice sheet decay decreased climate variability in the Southern Hemisphere
The changing topography of ice sheets in the Northern Hemisphere during the last Ice Age forced changes in the climate of Antarctica, a previously undocumented inter-polar climate change mechanism. (2018-02-05)

Alley receives Geological Society of America Public Service Award
Richard Alley, the Evan Pugh professor of geosciences, will receive the Geological Society of America's Public Service Award at its fall meeting in Houston. (2008-06-30)

A thermometer for the oceans
The average sea temperature is an essential parameter of the global climate - but it is very difficult to measure. At least until now, because an international team of researchers including Empa scientists have now developed a novel method using the concentration of noble gases in the eternal ice. This allows conclusions to be drawn on the changes in sea temperature from the last ice age to the present day, as the researchers report in the current issue of Nature. (2018-01-04)

Floating university expedition to unravel ocean bed secrets of rapid climate change
Researchers from Cardiff University, UK, have sailed into Cardiff Bay, returning from a major research expedition to to unravel the complex history of ice-ocean and climate change over the past 50,000 years. (2004-06-30)

Deglacial changes in western Atlantic Ocean circulation
A new study carried out by an international team of researchers, using the chemistry of ocean sediments has highlighted a widespread picture of Atlantic circulation changes associated with rapid climate change in the past. (2018-07-27)

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