Dynamic deoxygenation within intensified coastal upwelling circulations (September 2016)

September 2016: Professor Andrew Bakun (University of Miami, USA) speaks at Royal Society event Ocean ventilation and deoxygenation in a warming world. Abstract Major deoxygenation commonly takes place in ocean regions that feature particularly intense coastal upwelling circulations. Prominent examples discussed herein include the seasonal Somali Current upwelling, which during the southwest monsoon becomes the…

Biogeochemical regulation: Anoxia in the Past and Present (September 2016)

September 2016: Professor Andrew Watson FRS, (University of Exeter, UK) speaks at Royal Society event Ocean ventilation and deoxygenation in a warming world. Abstract The major biogeochemical cycles which keep the present-day Earth habitable are linked by a network of feedbacks which has led to a broadly stable chemical composition of the oceans and atmosphere…

Ralph Keeling: Oxygen trends in Atmosphere and Ocean. What do we know?

September 2016: Professor Ralph Keeling ( Scripps Institute for Oceanography, USA) speaks at The Royal Society event, Ocean ventilation and deoxygenation in a warming world. Abstract Human activities are causing systematic decreases in the O2 content of both the atmosphere and the oceans. The atmospheric loss is driven primarily by the burning of fossil-fuels while…

How Scientists Study Antarctic Ice Melt

NASA Launches Eighth Year of Antarctic Ice Change Airborne Survey (Oct. 17, 2016) http://www.nasa.gov/feature/goddard/2016/nasa-launches-eighth-year-of-antarctic-ice-change-airborne-survey Getz Ice Shelf: Iceberg B-34 Makes Its Debut off Antarctica http://earthobservatory.nasa.gov/IOTD/view.php?id=85727 NASA is tracking a gargantuan iceberg, escaped from Antarctica (2014) http://earthsky.org/earth/nasa-is-tracking-a-gargantuan-iceberg-escaped-from-antarctica Iceberg B31 Heads West (2014) http://earthobservatory.nasa.gov/IOTD/view.php?id=84795 Mapping Polar Ice (2013) https://svs.gsfc.nasa.gov/11194 Operation IceBridge 2012 Antarctic https://svs.gsfc.nasa.gov/11135 Getz Ice Shelf…

Potential abrupt cataclysmic change and the Atlantic

A slowdown or even collapse of the Gulf Stream System as a result of global warming has long been a concern of climate scientists and has fuelled the imagination of Hollywood. Recent studies provide evidence for a AMOC slowdown. Release via Earth101 (Follow and subscribe to their channel too) https://www.youtube.com/watch?v=EmiVhT5cHpw Related German article http://scilogs.spektrum.de/klimalounge/qa-zum-golfstromsystem-und-dem-cold-blob-im-atlantik/ Related…

Study: Contribution of Antarctica to past and future sea-level rise (2016)

A study published in March 2016, suggests that large parts of East Antarctica’s ice sheet can collapse, can do so under Pliocene conditions. A key question has long been whether ice sheet contribution could accelerate substantially, by an order of magnitude, either in this century or subsequently. Until recently ice sheet models had problems to…

Waking the Giant: Climate Force and Geological Hazards

Bill McGuire on the influence of climate change on geological systems, the link between episodes of major climate transition and geohazards (2012). Small changes in the Earth’s crust can potentially trigger large hazards such as earthquakes and volcanoes. Bill McGuire is Professor of Geophysical & Climate Hazards at UCL. He was a member of the…