Feed aggregator

Seafloor of Fram Strait is a sink for microplastic from Arctic and North Atlantic Ocean

Science Daily - Fri, 03/27/2020 - 13:15
Working in the Arctic Fram Strait, scientists have found microplastic throughout the water column with particularly high concentrations at the ocean floor.

Coral tells own tale about El Niño's past

Science Daily - Thu, 03/26/2020 - 13:44
Scientists use data from ancient coral to build a record of temperatures in the tropical Pacific Ocean over the last millennium. The data question previous links between volcanic eruptions and El Niño events.

How stable is deep ocean circulation in warmer climate?

Science Daily - Thu, 03/26/2020 - 13:43
If circulation of deep waters in the Atlantic stops or slows due to climate change, it could cause cooling in northern North America and Europe - a scenario that has occurred during past cold glacial periods. Now, a new study suggests that short-term disruptions of deep ocean circulation occurred during warm interglacial periods in the last 450,000 years, and may happen again.

Less ice, more methane from northern lakes: A result from global warming

Science Daily - Thu, 03/26/2020 - 11:41
Shorter and warmer winters lead to an increase in emissions of methane from northern lakes, according to a new study. Longer ice-free periods contribute to increased methane emissions. In Finland, emissions of methane from lakes could go up by as much as 60%.

East Antarctica's Denman Glacier has retreated almost 3 miles over last 22 years

Science Daily - Mon, 03/23/2020 - 11:56
East Antarctica's Denman Glacier has retreated 5 kilometers, nearly 3 miles, in the past 22 years, and researchers are concerned that the shape of the ground surface beneath the ice sheet could make it even more susceptible to climate-driven collapse.

Greenland shed ice at unprecedented rate in 2019; Antarctica continues to lose mass

Science Daily - Wed, 03/18/2020 - 13:36
Scientists describe Greenland's loss of 600 billion tons of ice in the summer of 2019, raising global sea levels by 2.2 millimeters in a short time.

Increasingly mobile sea ice risks polluting Arctic neighbors

Science Daily - Wed, 03/18/2020 - 13:36
The movement of sea ice between Arctic countries is expected to significantly increase this century, raising the risk of more widely transporting pollutants like microplastics and oil, according to new research.

Salmon provide nutrients to Alaskan streambanks

Science Daily - Wed, 03/18/2020 - 09:44
Nutrient cycling of stream ecosystems dependent on portion of salmons' lifecycle.

For narwhals, the 'unicorn of the seas,' size matters for sexual selection

Science Daily - Tue, 03/17/2020 - 20:56
Showy peacock feathers, extravagant elk antlers and powerful crayfish claws are just a few examples of the ostentatious animal extremes used to compete for and attract mates, a process called sexual selection. Now, we can add the 'unicorn of the seas,' the narwhal, to the list. A new study demonstrates the best evidence to date that the narwhal tusk functions as a sexual trait.

Mysterious bone circles made from the remains of mammoths reveal clues about Ice Age

Science Daily - Mon, 03/16/2020 - 19:46
Mysterious bone circles made from the remains of dozens of mammoths have revealed clues about how ancient communities survived Europe's ice age.

New research first to relate Antarctic sea ice melt to weather change in tropics

Science Daily - Mon, 03/16/2020 - 13:15
While there is a growing body of research showing how the loss of Arctic sea ice affects other parts of the planet, a new study is the first to also consider the long-range effect of Antarctic sea ice melt. It estimates that Arctic and Antarctic ice loss will account for about one-fifth of the warming that is projected to happen in the tropics.

Bargain-hunting for biodiversity

Science Daily - Mon, 03/16/2020 - 13:14
The best bargains for conserving some of the world's most vulnerable salamanders and other vertebrate species can be found in Central Texas and the Appalachians, according to new conservation tools.

What causes an ice age to end?

Science Daily - Fri, 03/13/2020 - 10:21
Research by an international team helps to resolve some of the mystery of why ice ages end by establishing when they end.

Computer model solves mystery of how gas bubbles build big methane hydrate deposits

Science Daily - Thu, 03/12/2020 - 13:48
New research has explained an important mystery about natural gas hydrate formations and, in doing so, advanced scientists' understanding of how gas hydrates could contribute to climate change and energy security.

Melting glaciers will challenge some salmon populations and benefit others

Science Daily - Wed, 03/11/2020 - 15:19
A new study looking at the effects that glacier retreat will have on western North American Pacific salmon predicts that while some salmon populations may struggle, others may benefit.

New flood damage framework helps planners prepare for sea-level rise

Science Daily - Wed, 03/11/2020 - 15:18
Researchers have developed a new framework allowing urban planners and policymakers to consider a combination of responses to sea-level rise and, if hard structures, how high these protections should be built, depending on their tolerance for risk and the projected financial losses to a particular area due to flooding.

Coral reefs 'weathering' the pressure of globalization

Science Daily - Wed, 03/11/2020 - 09:08
More information about the effects human activities have on Southeast Asian coral reefs has been revealed, with researchers looking at how large-scale global pressures, combined with the El Niño Southern Oscillation (ENSO) climate pattern, can detrimentally impact these delicate marine ecosystems.

Paleontologists discover solid evidence of formerly elusive abrupt sea-level jump

Science Daily - Tue, 03/10/2020 - 08:42
Meltwater pulses (MWPs) known as abrupt sea-level rise will inevitably affect cities especially those on coastal plains of low elevation. A recent study presented evidence of abrupt sea level change between 11,300-11,000 years ago in the Arctic Ocean, solving the puzzle of second largest meltwater pulse (labelled as ''MWP-1B'' next to the largest and already well understood MWP-1A).

Why organisms shrink in a warming world

Science Daily - Mon, 03/09/2020 - 08:30
Everyone is talking about global warming. A team of paleontologists has recently investigated how prehistoric organisms reacted to climate change, basing their research on belemnites. These shrunk significantly when the water temperature rose as a result of volcanic activity approximately 183 million years ago, during the period known as the Toarcian.

Newly uncovered Arctic landscape plays important role in carbon cycle

Science Daily - Thu, 03/05/2020 - 19:35
As the ice sheet covering most of Greenland retreats, researchers are studying the newly revealed landscape to understand its role in the carbon cycle.


Subscribe to Explore the Ice Age Midwest aggregator