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Read science articles on the ice age, glaciation and climatology. Discover the connection between ice ages and global warming.
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Direct evidence of sea level 'fingerprints' discovered

Thu, 09/07/2017 - 11:02
The first observation of sea level 'fingerprints' -- tell-tale differences in sea level rise around the world in response to changes in continental water and ice sheet mass -- has been reported by researchers.

Unraveling a major cause of sea ice retreat in the Arctic Ocean

Wed, 09/06/2017 - 09:36
Quantitative analysis has evidenced the acceleration system of melting ice: dark water surfaces absorb more heat than white ice surfaces, thus melting ice and making more water surfaces in the Arctic Ocean.

Aeroices: Newly discovered ultralow-density ice

Tue, 09/05/2017 - 13:55
Relatively little is known about the effects of extreme negative pressure on water molecules. Exploring a significant region of negative pressure through molecular dynamic simulations, researchers have now theoretically discovered a new family of ice phases. Called aeroices, these ices have the lowest density of all known ice crystals.

Warmer world may bring more local, less global, temperature variability

Tue, 09/05/2017 - 11:32
Many tropical or subtropical regions could see increases in naturally occurring temperature variability as Earth warms over coming decades, a new study suggests. These local changes could occur even though Earth's global mean surface temperature variability will likely decrease because of less solar reflection from icecaps at high latitudes.

Massive Antarctic volcanic eruptions linked to abrupt Southern hemisphere climate changes

Mon, 09/04/2017 - 14:10
New findings document a 192-year series of volcanic eruptions in Antarctica that coincided with accelerated deglaciation about 17,700 years ago.

Experts call for added focus on the impact of glacier mass loss on downstream systems

Mon, 09/04/2017 - 14:10
Researchers have warned of an 'urgent worldwide need' to address a broad spectrum of cascading impacts of glacier mass loss on downstream systems.

Record-low 2016 Antarctic sea ice due to 'perfect storm' of tropical, polar conditions

Thu, 08/31/2017 - 08:26
The sudden, unexpected nosedive in Antarctic sea ice last year was due to a unique one-two punch from atmospheric conditions both in the tropical Pacific Ocean and around the South Pole.

American pika disappears from large area of California's Sierra Nevada mountains

Wed, 08/30/2017 - 19:21
The American pika, a small mammal adapted to high altitudes and cold temperatures, has died out from a 165-square-mile span of habitat in California's northern Sierra Nevada mountains, and the cause appears to be climate change. Researchers surveyed pika habitat throughout the north Lake Tahoe area and found that pikas had disappeared from an area that stretches from near Tahoe City to Truckee, more than 10 miles away, and includes Mount Pluto.

Century-old seal pelts reveal changes in Ross Sea ecosystem

Wed, 08/30/2017 - 08:43
Scientists sampled a pile of frozen pelts left in a hut by Antarctic explorers for Weddell seal tissue from a century ago, at the very start of human activities in Antarctica. By using sophisticated isotope analysis to compare samples from modern and century-old seals, they were able to investigate human impacts on the Antarctic ecosystem.

Past and future of sea ice cover in the Arctic

Tue, 08/29/2017 - 08:10
Temperatures in the Arctic are currently climbing two to three times faster than the global average. The result is dwindling sea ice. Climate researchers now show that, in the course of our planet's history, summertime sea ice was to be found in the central Arctic in periods characterized by higher global temperatures -- but less CO2 -- than today.

Algae fortifies coral reefs in past and present

Mon, 08/28/2017 - 13:07
The Great Barrier Reef, and most other large reefs around the world, owe their bulk in large part to a type of red algae that grows on corals and strengthens them. New research has found that ancient coral reefs were also bolstered by their bond with red algae, a finding that could help scientists better understand how reefs will respond to climate change.

Human-made fossil methane emission levels larger than previously believed

Thu, 08/24/2017 - 11:14
A team of researchers spent seven weeks in Antarctica collecting and studying 2,000-pound samples of glacial ice cores that date back nearly 12,000 years. The ancient air trapped within the ice revealed surprising new data about methane that may help inform today's policymakers as they consider ways to reduce global warming.

Icebergs: Mathematical model calculates the collapse of shelf ice

Thu, 08/24/2017 - 08:36
Shelf ice, as found in Antarctica, refers to giant floating ice sheets that can span thousands of square kilometres. Pieces break off at their edges which form icebergs in the ocean. In order to more effectively predict these break-offs, in a process known as calving, a research team has developed mathematical models. On the basis of physical factors, it is claimed that these models can be used to predict when and where the ice may collapse. This is important particularly for research teams situated on the ice shelf.

Severity of North Pacific storms at highest point in over 1,200 years

Thu, 08/24/2017 - 08:01
Ice cores from Denali and Mount Logan offer insight into global climate connections and the history on intensifying storms.

Methane from tundra, ocean floor didn't spike during previous natural warming period

Wed, 08/23/2017 - 12:12
The last ice age transition to a warmer climate some 11,500 years ago did not include massive methane flux from marine sediments or the tundra, new research suggests. Instead, the likely source of rising levels of atmospheric methane was from tropical wetlands, authors of the new study say.

Ancient Earth’s hot interior created 'graveyard' of continental slabs

Tue, 08/22/2017 - 10:59
Plate tectonics has shaped the Earth's surface for billions of years: Continents and oceanic crust have pushed and pulled on each other, continually rearranging the planet's façade. As two massive plates collide, one can give way and slide under the other in a process called subduction. The subducted slab then slips down through the Earth's viscous mantle, like a flat stone through a pool of honey.

Satellite photos reveal gigantic outburst floods

Tue, 08/22/2017 - 09:48
Researchers have studied satellite photographs of Lake Catalina, an ice-dammed lake in East Greenland -- and were truly amazed: Unnoticed by science as well as people living in the area, the lake has been the source of four major outburst floods over the last 50 years -- each representing an astounding mass of energy, equaling up to 240 Hiroshima-bombs, report investigators.

Methane hydrate is not a smoking gun in the Arctic Ocean

Tue, 08/22/2017 - 09:04
Methane hydrate under the ocean floor was assumed to be very sensitive to increasing ocean temperatures. But a new study shows that short term warming of the Arctic ocean barely affects it.

Hidden river once flowed beneath Antarctic ice

Mon, 08/21/2017 - 17:34
Using the most precise seafloor maps ever created of Antarctica's Ross Sea, researchers have discovered a long-dead river system that once flowed beneath Antarctica's ice and influenced how ice streams melted after Earth's last ice age.

Study validates East Antarctic ice sheet to remain stable even if western ice sheet melts

Thu, 08/17/2017 - 15:20
A new study validates that the central core of the East Antarctic ice sheet should remain stable even if the West Antarctic ice sheet melts.

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