The hydrosphere (from Greek ὕδωρ – hudōr, “water”[1] and σφαῖρα – sphaira, “sphere”[2]) in physical geography describes the combined mass of water found on, under, and over the surface of a planet. http://en.wikipedia.org/wiki/Hydrosphere

Doubling times of 10, 20 or 40 years yield sea level rise of several meters

According to a new study, sea level rise of several meters might happen faster then previously thought. Based on data from past climate changes, when sea level rose to +5–9 m, including the occurrence of extreme storms – during a time when temperatures were less than 1 ◦C warmer than today, experts warn of similar…

Sudden ice loss acceleration at the Southern Antarctic Peninsula detected

ESA posted an update on Antarctic ice loss on 22 May 2015. Above animation shows how warm ocean water penetrates the glacier grounding line through basalt melt, threatening speed up of glaciers, discharged into the ocean. A recent acceleration in ice loss in a previously stable region of Antarctica has been detected by ESA’s ice mission. The…

The Significance of El Niño and Its Impacts

This event (December 2014), shows the significance of El Niño through observations—satellite, in situ, and model simulations—its physical mechanisms and associated biological and biogeochemical impacts, with a focus on the Equatorial Pacific and South America. The event provides a detailed discussion on seasonal ENSO forecasts and will bridge together knowledge from other domestic and international…

Sea Level Rise Projections until 2100, a nonlinear response?

Past sea level rise is not captured by models yet, in particular the response from ice sheets in Antarctica due to global warming. Projections therefore can often be regarded to potentially underestimate future sea level rise. For example, Overpeck et al. (2006), and Hansen (2007) suggest possibilities which could eventually lead to a nonlinear response…

Ocean May Be Melting Totten Glacier Says Study

Ocean access to a cavity beneath Totten Glacier in East Antarctica http://www.nature.com/ngeo/journal/v8/n4/full/ngeo2388.html Totten Glacier, the primary outlet of the Aurora Subglacial Basin, has the largest thinning rate in East Antarctica1, 2. Thinning may be driven by enhanced basal melting due to ocean processes3, modulated by polynya activity4, 5. Warm modified Circumpolar Deep Water, which has…

The Discovery of Abiotic Methane – A New Methane Hydrate Source (News Roundup)

A reservoir of abiotic methane has been discovered in the Arctic Ocean. This means that there is more of the greenhouse gas trapped under the seabed than previously thought. News: A reservoir of abiotic methane has been discovered in the Arctic Ocean https://cage.uit.no/news/new-source-methane-discovered-arctic-ocean/ Study: Abiotic methane from ultraslow-spreading ridges can charge Arctic gas hydrates http://geology.geoscienceworld.org/content/early/2015/03/27/G36440.1.full.pdf+html?ijkey=tNRcKxKHNcG5s&keytype=ref&siteid=gsgeology…

ScienceCasts: Climate Change and the Yin-Yang of Polar Sea Ice

Arctic and Antarctic sea ice are both affected by climate change, but the two poles of Earth are behaving in intriguingly different ways. Visit http://science.nasa.gov/ for more. Why Increasing Antarctic Sea Ice Doesn’t Mean Climate Change Isn’t Happening http://www.businessinsider.com/antarctic-sea-ice-climate-change-2014-12

ScienceCasts: The Cloudy Future of Arctic Sea Ice

As climate change continues to hammer Arctic sea ice, pushing back its summertime boundaries to record-high latitudes, NASA is flying an innovative airborne mission to find out how these developments will affect worldwide weather. NASA: Oct 15, 2014: Climate change is a global phenomenon, yet Earth scientists are keeping a wary eye on one place…

Bill McGuire: Modelling suggests with ice cap melt, an increase in volcanic activity

Climate State interviewed Bill McGuire, Emeritus Professor of Earth Sciences at the University College London, one of Britain’s leading volcanologists and contributing author to the 2011 IPCC report. He called for an early tsunami warning system (2004, The Guardian) and warned in his book The Waking Giant, of the Earth response (more earthquakes, tsunamis and…

Arctic Sea Ice, Summer 2014 (NASA animation)

An animation of daily Arctic sea ice extent in summer 2014, from March 21, 2014 to Sept. 17, 2014 – when the ice appeared to reach it’s minimum extent for the year. It’s the sixth lowest minimum sea ice extent in the satellite era. The data was provided by the Japan Aerospace Exploration Agency from…

Water’s Edge the crisis of rising sea levels: Accomack County, Virginia, under siege

As the seas rise, a slow-motion disaster gnaws at America’s shores A REUTERS investigation: Analysis finds that flooding is increasing along much of the nation’s coastline, forcing many communities into costly, controversial struggles with a relentless foe. From centuries-old fishing communities on Chesapeake Bay to a NASA space center on the Atlantic coast, a Virginia…