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 …
The melting of Antarctica is accelerating at an alarming rate, with about 3 trillion tons of ice disappearing since 1992, an international team of ice experts said in a new study. In the last quarter century, the southern-most continent's ice sheet - a key indicator of climate change - melted …
Ice melting in Antarctica is causing sea levels to rise at a massive rate and the frozen continent has lost about 3 trillion tonnes of ice in the last 25 years. Warning that its rate of melting is accelerating, scientists have urged nations to defend their shores against the flooding …
A growing network of ice cores reveals the past 800,000 years of Antarctic climate and atmospheric composition. The data show tight links among greenhouse gases, aerosols and global climate on many timescales, demonstrate connections between Antarctica and distant locations, and reveal the extraordinary differences between the composition of our present …
Hypothesized drawdown of the East Antarctic Ice Sheet through the “bottleneck” zone between East and West Antarctica would have significant impacts for a large proportion of the Antarctic Ice Sheet. Earth observation satellite orbits and a sparseness of radio echo sounding data have restricted investigations of basal boundary controls on …
Marine salvage experts are floating a plan to tug icebergs from Antarctica to South Africa's drought-hit Cape Town to help solve the region's worst water shortage in a century. Salvage master Nick Sloane told Reuters he was looking for government and private investors for a scheme to guide huge chunks …
A new IMAS-led study has revealed a previously undocumented process where melting glacial ice sheets change the ocean in a way that further accelerates the rate of ice melt and sea level rise. Led by IMAS PhD student Alessandro Silvano and published in the journal Science Advances, the research found …
Strong heat loss and brine release during sea ice formation in coastal polynyas act to cool and salinify waters on the Antarctic continental shelf. Polynya activity thus both limits the ocean heat flux to the Antarctic Ice Sheet and promotes formation of Dense Shelf Water (DSW), the precursor to Antarctic …
The populations of the Adelie and Chinstrap penguin species are declining as there shortage of food and their snowy habitat is shrinking The global warming is not only causing melting of glaciers in uninhabited cold deserts of Antarctica but it is also gradually pushing several living organisms towards extinction. These …
Although we all show concern or pay lip service on increasing phenomena of climate change, there is lack of discussions or community mobilisation as to how to conserve environment and curb the phenomena of global warming, feels Shivangini Singh. Singh was the part of 13-day Antarctica Expedition hosted by Robert …
Grounding lines are a key indicator of ice-sheet instability, because changes in their position reflect imbalance with the surround-ing ocean and affect the flow of inland ice. Although the grounding lines of several Antarctic glaciers have retreated rapidly due to ocean-driven melting, records are too scarce to assess the scale …
The world's fisheries will be, on average, 20 per cent less productive in the year 2300, according to a study. This bleak future will be characterised by 9.6 degrees Celsius increase in mean surface air temperature, nearly 10 times the warming we have seen to this point. The extended climate …
Climate change is likely to have a devastating impact on King penguins if global warming continues at its present rate, scientists warn. "The main issue is that there is only a handful of islands in the Southern Ocean and not all of them are suitable to sustain large breeding colonies," …
INDORE: A customs and central excise department assistant commissioner from Indore will be battling sub-zero temperature in the coming days to learn leadership skills on spreading awareness about climate change by studying the conditions at Antarctica. He has been selected as a member of an international group of 80 environmentalists …
The world’s sea ice shrank to a record January low last month as the annual polar melting period expanded, experts say. The 5.04 million square miles of ice in the Arctic was 525,000 square miles below the 1981-to-2010 ice cover average, making it the lowest January total in satellite records, …
A group of researchers has used satellite data from last 25 years to show the rapid rate of sea level increase and how bad it might get by the end of this century. Thanks to melting ice sheets in Antarctica and Greenland, sea levels have witnessed a rise over past …
Satellite altimetry has shown that global mean sea level has been rising at a rate of ∼3 ± 0.4 mm/y since 1993. Using the altimeter record coupled with careful consideration of interannual and decadal variability as well as potential instrument errors, we show that this rate is accelerating at 0.084 …
New research led by CU Boulder shows that 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. The new study—published today in the journal Nature and co-authored by researchers at …
CHENNAI: Travelling across thick layers of ice at a glacial pace and drilling a hole through a large ice shelf formed over an unexplored region of Antarctica, Indian scientists are inching closer to uncovering the missing links between melting glaciers in the southernmost continent and global warming. A team from …
Noble gases trapped in ice cores are used to show that the mean global ocean temperature increased by 2.6 degrees Celsius over the last glacial transition and is closely correlated with Antarctic temperature.
Attribution of Antarctic ozone recovery to the Montreal protocol requires evidence that (1) Antarctic chlorine levels are declining and (2) there is a reduction in ozone depletion in response to a chlorine decline. We use Aura Microwave Limb Sounder measurements of O3, HCl, and N2O to demonstrate that inorganic chlorine …
