For the first time in 24 years, this report comprehensively summarizes the status — population size and population trends — of Antarctica’s five penguin species, continent-wide and in key regions. These species total at least 5.7 million breeding pairs nesting at 660 or more sites across the entire Antarctic continent.

The Strategic Plan for Biodiversity, adopted under the auspices of the Convention on Biological Diversity, provides the basis for taking effective action to curb biodiversity loss across the planet by 2020—an urgent imperative. Yet, Antarctica and the Southern Ocean, which encompass 10% of the planet’s surface, are excluded from assessments of progress against the Strategic Plan. The situation is a lost opportunity for biodiversity conservation globally. We provide such an assessment.

The continent of Antarctica officially has a new record high temperature of 63.5 degrees, scientists from the World Meteorological Organization (WMO) announced Wednesday.

With 2016 being declared as the hottest year on record, the dangers of global warming on the world loom larger than ever.

Some 14,000 km from Japan, a 33-member team is researching a wide range of issues on global warming at Showa Station, Japan’s Antarctic research center.

Environmentalists' and scientists' concern over climate change and its effects are on another level altogether.

The West Antarctic Ice Sheet is one of the largest potential sources of rising sea levels. Over the past 40 years, glaciers flowing into the Amundsen Sea sector of the ice sheet have thinned at an accelerating rate, and several numerical models suggest that unstable and irreversible retreat of the grounding line—which marks the boundary between grounded ice and floating ice shelf—is underway.

Understanding the sources and evolution of aerosols is crucial for constraining the impacts that aerosols have on a global scale. An unanswered question in atmospheric science is the source and evolution of the Antarctic aerosol population.

Original Source

Ultraviolet (UV) radiations from the Sun in the spectral range 100-280 nm react with the stratospheric atmosphere, and oxygen molecules (O2) and atoms (O) combine to produce ozone (O3). Since there are destruction processes also, the equilibrium amount is small, only a few percent of the atmosphere. However, it serves a very vital, useful purpose as it absorbs UV in the spectral range 280-320 nm (termed as UVB), which is very dangerous for terrestrial life and is a cause of skin cancer, etc.

Mass loss from the West Antarctic ice shelves and glaciers has been linked to basal melt by ocean heat flux. The Totten Ice Shelf in East Antarctica, which buttresses a marine-based ice sheet with a volume equivalent to at least 3.5 m of global sea-level rise, also experiences rapid basal melt, but the role of ocean forcing was not known because of a lack of observations near the ice shelf. Observations from the Totten calving front confirm that (0.22 ± 0.07) × 106 m3 s−1 of warm water enters the cavity through a newly discovered deep channel.

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