Antarctica

State of the climate in 2022: special supplement to the Bulletin of the American Meteorological Society

This is the 33rd issuance of the annual assessment now known as State of the Climate, published in the Bulletin since 1996. As a supplement to the Bulletin, its foremost function is to document the status and trajectory of many components of the climate system. However, as a series, the …

Climate change alert! Warm Antarctica spells bad news for penguin colonies

The sudden climate change is wreaking havoc all over the world and Antarctica is no exception. A recent report depicts that the southern polar region could loose the habitat more than half of its penguin colonies by 2099. In a research done by oceanographer Megan Cimino, it was found that …

Antarctic ozone hole has finally started to heal, scientists report

In a major new paper in the influential journal Science, a team of researchers report strikingly good news about a 30-year old environmental problem. The Antarctic ozone "hole" - which, when it was first identified in the mid-1980s, focused public attention like few other pieces of environmental news - has …

Wind-blown Antarctic sea ice helps drive ocean circulation

Antarctic sea ice is constantly on the move as powerful winds blow it away from the coast and out toward the open ocean. A new study shows how that ice migration may be more important for the global ocean circulation than anyone realized. A team of scientists used a computer …

Antarctic sees highest level of greenhouse gas in 4 million years

Carbon dioxide levels in Antarctica have reached their highest levels for four million years. The South Pole Observatory carbon dioxide observing station recorded 400 parts per million (ppm), according to an announcement by the National Oceanic and Atmospheric Administration, marking the highest level in human history. Pieter Tans, the lead …

Four-decade record of pervasive grounding line retreat along the Bellingshausen margin of West Antarctica

Changes to the grounding line, where grounded ice starts to float, can be used as a remotely-sensed measure of ice-sheet susceptibility to ocean-forced dynamic thinning. Constraining this susceptibility is vital for predicting Antarctica's contribution to rising sea levels. We use Landsat imagery to monitor grounding line movement over four decades …

Why Global Warming Hasn't Touched Antarctic Ocean

While the world continues to grapple under the effects of global warming, researchers have found why the waters surrounding Antarctica are among the last places on Earth to be seemingly unaffected by the human-driven climate change. The findings showed that the unique ocean currents that surround Antarctica continually pull deep …

Oceans delay warming of Antarctic waters: study

Deep, cold ocean currents from the North Atlantic blunt the effect of global warming on Antarctica and slow the rise of sea levels, according to a study published Monday. This icy insulation of the snowy continent -- covered by a sheath of ice up to four kilometres (2.5 miles) thick …

Deep, cold Arctic currents like conveyor belt mitigating warming’s effect on Antarctica, sea level surge

PARIS – Deep, cold ocean currents from the North Atlantic blunt the effect of global warming on Antarctica and slow the rise of sea levels, according to a study published Monday. This icy insulation of the snowy continent — covered by a sheath of ice up to 4 km (2.5 …

2016 set to be hottest year since 1880 after 12 consecutive record-breaking months

Graph from the US National Oceanic and Atmospheric Association shows 2016 shows this year significantly hotter than ever the last few hot years.Graphic courtesy of NOAA After 12 consecutive months that broke heat records, there's a 99% chance that 2016 will be the hottest of the last 136 years, according …

Why sea ice cover around Antarctica is rising

Why has the sea ice cover surrounding Antarctica been increasing slightly, in sharp contrast to the drastic loss of sea ice occurring in the Arctic Ocean? A new NASA-led study has found the geology of Antarctica and the Southern Ocean is responsible. The researchers used satellite radar, sea surface temperature, …

Repeated large-scale retreat and advance of Totten Glacier indicated by inland bed erosion

The stability of the East Antarctic Ice Sheet and its contribution to past sea-level rise are not well defined; in this paper, airborne geophysical data and ice-sheet models are used to show that the Totten Glacier has undergone large-scale retreats and advances, and that it could contribute several metres of …

Antarctic glacier under threat from global warming could raise sea levels by almost three metres, scientists warn

Global warming could raise sea levels by almost three metres (9.8ft) by destabilising a major eastern Antarctic glacier, scientists have said. A study predicts that unless the current rate of climate change is reduced, the Totten Glacier could cross a point of no return within the next century. This would …

New research shows the North Pole is 'moving towards the UK' say scientists

New scientific studies show that the North Pole is gradually shifting towards the UK, as global warming is changing the way the Earth turns on its axis. Experts and scientists now believe the North Pole's movement is being caused by a shift in the distribution of water across the planet …

No 'science for science sake': emails show CSIRO plans to cut climate research

The future of Australia’s premier science organisation, the CSIRO, has again being placed in doubt by indications that 'doing science for science sake' will not be part of its strategy. Australia's national science organisation planned to stop "doing science for science sake" and would no longer do "public good" work …

Seas could rise higher than predicted, drenching coastal cities: study

NEW YORK (Thomson Reuters Foundation) - Global seas could rise nearly twice as much as previous, widely accepted estimates, according to a study published on Thursday saying low-lying cities face possible disaster by the end of the century. Sea levels could surge more than three feet (0.9 meter) by 2100 …

Contribution of Antarctica to past and future sea-level rise

Climate and ice-sheet modelling that includes ice fracture dynamics reveals that Antarctica could contribute more than a metre of sea-level rise by 2100 and more than 15 metres by 2500, if greenhouse gas emissions continue unabated.

Climate change: Melting Antarctic ice sheet could cause 15m sea level rise by year 2500

Melting of the Antarctic Ice Sheet could cause sea level to rise by twice as much as previous thought. Scientists say updated models show melting could contribute more than one metre in sea level rise by 2100. The research published in Nature is the first to successfully use sea level …

Ice melt, sea level rise and superstorms: evidence from paleoclimate data, climate modeling, and modern observations that 2 ◦C global warming could be dangerous

We use numerical climate simulations, paleoclimate data, and modern observations to study the effect of growing ice melt from Antarctica and Greenland. Meltwater tends to stabilize the ocean column, inducing amplifying feedbacks that increase subsurface ocean warming and ice shelf melting. Original Source

East Antarctic ice melt could spell doom

The East Antarctic ice sheet is a 'sleeping giant' and the world is on track for massive sea level rises resulting from its melting due to the rising carbon dioxide levels, scientists warn. Research showed that if carbon dioxide levels in the atmosphere continue increasing as predicted, the giant East …

CO2 emissions pose massive threat to Antarctic ice sheet: New Zealand expert

WELLINGTON, March 11 (Xinhua) -- The world is on track for massive sea level rises resulting from the melting of an Antarctic ice sheet if carbon dioxide emissions continue as predicted, a leading New Zealand expert said Friday. The melting of the giant East Antarctic ice sheet would raise the …

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