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 …
This publication aims at providing an improved understanding of sea-level rise and variability to reduce the uncertainties associated with projections for sea-level rise, and hence contribute to more effective coastal planning and management. It presents a synthesis of the findings and recommendations from the discussion of position papers from a …
At the end of the last ice age, rising atmospheric CO2 levels coincided with a decline in radiocarbon activity, suggesting the release of highly radiocarbon-depleted CO2 from the deep ocean to the atmosphere. These authors present radiocarbon records of surface and intermediate-depth waters from two sediment cores and find an …
The observed sea surface temperature in the Southern Ocean shows a substantial warming trend for the second half of the 20th century. Associated with the warming, there has been an enhanced atmospheric hydrological cycle in the Southern Ocean that results in an increase of the Antarctic sea ice for the …
This is the story of how our fishermen, having taken so many fish from the seas closer to home, are now venturing to the ends of the Earth in order to maintain our insatiable appetite for seafood. This is also the story of how a group of Antarctic scientists, environmentalists, …
Recent observational surveys have shown significant oceanic bottom-water warming. However, the mechanisms causing such warming remain poorly understood, and their time scales are uncertain. Here, we report computer simulations that reveal a fast teleconnection between changes in the surface air-sea heat flux off the Ad
The deuterium excess of polar ice cores documents past changes in evaporation conditions and moisture origin. New data obtained from the European Project for Ice Coring in Antarctica Dome C East Antarctic ice core provide new insights on the sequence of events involved in Termination II, the transition between the …
Global climate and the atmospheric partial pressure of carbon dioxide (pCO2atm ) are correlated over recent glacial cycles, with lower pCO2atm during ice ages, but the causes of the pCO2atm changes are unknown. The modern Southern Ocean releases deeply sequestered CO2 to the atmosphere. Growing evidence suggests that the Southern …
Global climate and the atmospheric partial pressure of carbon dioxide (pCO2atm ) are correlated over recent glacial cycles, with lower pCO2atm during ice ages, but the causes of the pCO2atm changes are unknown. The modern Southern Ocean releases deeply sequestered CO2 to the atmosphere. Growing evidence suggests that the Southern …
Antarctica’s high winds and freezing conditions might deter most, but some see them as perfect opportunities to fly a kite—in the name of conservation. The kite is an aerial photography device providing a bird’s eye view of the plateau that is home to the historic huts built by Australian explorer …
London: In a new research into impact of melting ice on sea level, scientists have found that thinning ice in Antarctica is contributing nearly 10% of sea level rise and Pine Island Glacier is the major source. Using Autosub, an autonomous underwater vehicle, researchers led by the British Antarctic Survey …
The primary goal of the annual State of the Climate collection of articles is to document the weather and climate events in 2009 from around the world and put them into accurate historical perspective, with a particular focus on unusual or anomalous events. In total, 37 Essential Climate Variables were …
If some of the spectacular calving of ice shelves in Antarctica is down to global warming, then why did we not see break-ups on the same scale in Greenland, which is much warmer? It turns out that, counter-intuitively, it's because Greenland is warmer. When the ice sheets that blanket Antarctica …
This paper explore three key issues that relate to the management of Antarctica in the context of climate change: climate change mitigation; climate change adaptation, in terms of the management strategies that could limit the vulnerability of Antarctica
A new research by US Geological Survey (USGS) has deter- mined that ice shelves are retreating in the southern section of the Antarctic Peninsula due to climate change, which could result in glacier retreat and sea- level rise if warming continues. The research by the USGS is the first to …
Associate Laureate Laureate Cristian Donoso kayaked along Antarctica's rugged coast, documenting the fate of wildlife endangered by global climate change. Now he has returned there with two companions to kayak to a remote section of the Antarctic Peninsula, then turn the kayaks into sleds and scale the Antarctic Andes, exploring …
Ice and firn core studies provide one of the most valuable tools for understanding the past climate change. In order to evaluate the temporal isotopic variability recorded in ice and its relevance to environmental changes, stable isotopes of oxygen and hydrogen were studied in a firn core from coastal Dronning …
Ice and firn core studies provide one of the most valuable tools for understanding the past climate change. In order to evaluate the temporal isotopic variability recorded in ice and its relevance to environmental changes, stable isotopes of oxygen and hydrogen were studied in a firn core from coastal Dronning …
