Noticias sobre Antarctica
River longer than the Thames beneath Antarctic ice sheet could affect ice loss
An unexpected river under the Antarctic ice sheet affects the flow and melting of ice, potentially accelerating ice loss as the climate warms.
How old is the oldest ice in Antarctica?
Much of the southern continent remains frozen in time, providing a window into Earth’s past. Expert Robert Mulvaney reveals how far back these records go.
Deeper understanding of the icy depths informs global water circulation
Scientists have uncovered new details of how ice forming below the ocean surface in Antarctica provides cold dense water that sinks to the seabed in an important aspect of global water circulation.
Melting permafrost increases the emission of greenhouse gases in Arctic lakes
Groundwaters that circulate through the subsoil as a result of the melting permafrost can transport carbon dioxide and methane —gases with a strong greenhouse effect— to Arctic lakes and this increases the effects of climate change.
Are we missing a crucial component of sea-level rise?
Recent efforts using computational modeling to understand how melting ice in Antarctica will impact the planet's oceans have focused on ice-sheet geometry, fracture, and surface melting—processes that could potentially trigger or accelerate ice-sheet mass loss.
Risk of multiple climate tipping points escalates above 1.5°C global warming
Multiple climate tipping points could be triggered if global temperature rises beyond 1.5°C above pre-industrial levels, according to a major new analysis published in the journal Science.
It’s raining PFAS: even in Antarctica and on the Tibetan plateau rainwater is unsafe to drink
Per- and polyfluoroalkyl substances (PFAS) are man-made hazardous chemicals that are spread globally in the atmosphere and as a result they can be found in the rainwater and snow in even the most remote locations on Earth.
NASA Studies Find Previously Unknown Loss of Antarctic Ice
New research on Antarctica, including the first map of iceberg calving, doubles the previous estimates of loss from ice shelves and details how the continent is changing.
Coastal glacier retreat linked to climate change
More of the world's coastal glaciers are melting faster than ever, but exactly what's triggering the large-scale retreat has been difficult to pin down because of natural fluctuations in the glaciers' surroundings.
Tropical storms trigger Antarctic ice melt
New factors that contribute to record-high temperatures and ice melt over the eastern Antarctic Peninsula and Larsen C Ice Shelf have been identified.
Researchers use lasers to get a new view on Oregon’s glaciers
The latest technology to study glaciers fits in a backpack and can be carried up steep mountains.
Antarctic glaciers losing ice at fastest rate for 5,500 years
New evidence suggests that two major glaciers in the West Antarctic Ice Sheet (WAIS) are losing ice at the fastest rate for at least 5,500 years.
First microplastics found in Antarctic snow
University of Canterbury researchers have published the world’s first study confirming the discovery of microplastics in fresh snow in Antarctica.
In sediments below Antarctic ice, scientists discover a giant groundwater system
Previously unmapped reservoirs could speed glaciers, release carbon
Model pinpoints glaciers at risk of collapse due to climate change
As climate change warms the planet, glaciers are melting faster, and scientists fear that many will collapse by the end of the century, drastically raising sea level and inundating coastal cities and island nations.
New study on water resources in Himalaya
A new study featuring contributions from British Antarctic Survey (BAS) scientists has identified 100 pressing research questions on climate change and water resources in the Upper Indus Basin (UIB) that must be answered to protect the communities that live there.
Everyday plastic products release trillions of microscopic particles into water
Plastics surround us, whether it’s the grocery bags we use at the supermarket or household items such as shampoo and detergent bottles.
Researchers demonstrate new link between greenhouse gases and sea level rise
A new study provides the first evidence that rising greenhouse gases have a long-term warming effect on the Amundsen Sea in West Antarctica.
Warmer summers and meltwater lakes are threatening the fringes of the world’s largest ice sheet
A first-of-its-kind study looking at surface meltwater lakes around the East Antarctic Ice Sheet across a seven-year period has found that the area and volume of these lakes is highly variable year-to-year, and offers new insights into the potential impact of recent climatic change on the 'Frozen Continent'.
Ice flow is more sensitive to stress than previously thought
The rate of glacier ice flow is more sensitive to stress than previously calculated, according to a new study by MIT researchers that upends a decades-old equation used to describe ice flow.