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 …
NEW DELHI: The combined rate of melting for the ice sheets covering Greenland and Antarctica has increased during the last 20 years says a landmark study published Thursday in the journal Science. The study was carried out by an international team of 47 experts from 26 laboratories supported by NASA …
Current global warming necessitates a detailed understanding of the relationships between climate and global ice volume. Highly resolved and continuous sea-level records are essential for quantifying ice-volume changes. However, an unbiased study of the timing of past ice-volume changes, relative to polar climate change, has so far been impossible because …
Sea levels are rising 60% faster than UN projections, threatening low-lying areas from Miami to the Maldives, a study said on Wednesday. The report, issued during UN talks in Qatar on combating climate change, also said temperatures were creeping higher in line with UN scenarios, rejecting hopes the rate had …
A new model of glacial isostatic adjustment used in conjunction with GRACE satellite data suggests that ice loss from Antarctica is contributing 0.19 millimetres per year to global mean sea level, which is substantially less than previous GRACE-based estimates.
Major nations failed to reach agreement on Thursday to set up huge marine protected areas off Antarctica under a plan to step up conservation of creatures such as whales and penguins around the frozen continent. The 25-member Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) agreed, however, to …
Rich in fish, minerals and scientific potential, the seas around Antarctica are among the planet’s most pristine waters — but fishing vessels are already moving in. Next week, negotiators at a meeting of the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR, pronounced ‘cam-lar’) may try to contain …
Scientists have produced the first three dimensional map of the surface beneath Antarctic sea ice, helping them better understand the impact of climate change on Antarctica. The team of scientists from eight countries have used a robot submarine to chart a frozen and inverted world of mountains and valleys, allowing …
Adopting sequential extraction procedures, Ba, Cu, Mn, Ni, V and Zn concentrations were determined in the moderately reducible, organically bound, carbonateassociated and adsorbable fractions within a sediment core collected from the Indian sector of the Southern Ocean. The elemental abundances were studied with reference to the Last Glacial Maximum (LGM), …
The hole in the ozone layer, the earth's protective shield against ultraviolet rays, is expected to be smaller this year over the Antarctic than last, showing how a ban on harmful substances has stopped its depletion, the United Nations said on Friday. But the hole is probably larger than in …
On the basis of data from other subglacial environments and simulations of the accumulation of methane hydrate in Antarctic sedimentary basins, it seems there could be unsuspected, large stores of methane beneath the Antarctic Ice Sheet.
A vast reservoir of the potent greenhouse gas methane may be locked beneath the Antarctic ice sheet, a study suggests. Scientists say the gas could be released into the atmosphere if enough of the ice melts away, adding to global warming. Research indicates that ancient deposits of organic matter may …
In sharp contrast to the decreasing sea ice coverage of the Arctic, in the Antarctic the sea ice cover has, on average, expanded since the late 1970s. More specifically, satellite passive-microwave data for the period November 1978–December 2010 reveal an overall positive trend in ice extents of 17 100 ± …
A reconstruction of temperatures along the Wilkes Land coast of Antarctica during the early Eocene epoch shows that the climate supported the growth of near-tropical forests and that winters were very mild and essentially frost-free.
This is the 22nd annual edition of the State of the Climate series, from its origin as NOAA’s Climate Assessment, and the 17th consecutive year of its association with the Bulletin of the American Meteorological Society. Its primary goals are to document the weather and climate events of the year …
Antarctica was much warmer and wetter that helped plant life to thrive some 20 million years ago, a new Nasa research has suggested. Examining plant-leaf wax remnants in sediment core samples taken from under the Ross Ice Shelf of Antarctica, researchers found that summer temperatures along the Antarctic coast 15 …
Is India’s thirst for fresh water causing ocean levels to rise? Experts warn that the backwaters of Kerala and the deltas of the Ganga, Krishna, Godavari, Cauvery and Mahanadi on the east coast are being threatened by rising ocean levels. A recent Nasa study had confirmed that water tables in …
After two decades of hardwork, on 5 February 2012, a team of Russian scientists began drilling at Lake Vostok, the largest of more than 140 sub-glacial lakes and the most deeply buried of the lakes hidden under the Antarctic ice cap.
A huge swath of the waters off Antarctica must be protected from fishing and other industries, environmental groups said on Monday. More than 40% of the region needs to be given protection before one of the world's last true frontier areas is damaged irreparably by human activity, the Antarctic Ocean …
Massive extraction of groundwater can resolve a puzzle over a rise in sea levels in past decades, scientists in Japan said on Sunday. Global sea levels rose by an average of 1.8 millimetres per year from 1961-2003, according to data from tide gauges. But the big question is how much …
The redirection of warm water under the Filchner–Ronne Ice Shelf during the second half of this century could cause the ice-shelf base to melt at a rate 20 times higher than at present.
