Rivers of meltwater on Greenland’s ice sheet contribute to rising sea levels

Using satellite and field work after an extreme melt event in Greenland, a UCLA-led study finds that melt-prone areas on its ice sheet develop a remarkably efficient drainage system of stunning blue streams and rivers that carry meltwater into moulins (sinkholes) and ultimately the ocean. However, the team’s measurements at the ice’s edge show that…

Antarctic glaciers are sloshing seaward with accelerated speed

NBC: In Antarctica, glaciers are sloshing seaward at an ever faster clip, ocean waters are warming, and, perhaps counterintuitively, sea ice is expanding, according to a batch of recent studies that paint a stark picture of climate change unfolding at the far southern reaches of the globe. For people in North America, the distant events…

Stefan Rahmstorf: The critical threshold, the “tipping point” in West Antarctica has now passed

Recently the ClimateState staff, interviewed Stefan Rahmstorf, Head of Earth System Analysis, at the Potsdam Institute for Climate Impact Research (PIK). Robert Bristow: To get CO2 emissions under control – do you think some form of geoengineering (i.e CO2 scrubbing) will be desirable? Stefan Rahmstorf: The term geoengineering or climate engineering, encompasses a wide range…

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…

Everything you need to know about Mass Extinction, Sea Level Rise and Amplification

Professor Peter Ward (Professor, Sprigg Institute of Geobiology, The University of Adelaide) explains the interconnections of rising carbon dioxide levels and flood basalt, and how it leads to anoxic oceans (with Hydrogen sulfide). Ward explains how today’s CO2 levels will result in sea level rise with disrupting implications for crops and how deglaciation will ultimately…

Greenland ice sheet collapse, triggered ancient sea level rise 400,000 years ago

New evidence suggest that the longest interglacial (the time in between ice ages) – a warming period, called Marine Isotope Stage 11, more than 400,000 years ago, created nearly complete deglaciation of southern Greenland, thus contributed 4-6 meters to global sea level rise at that period. Overall se alevel rose about 6-13 meters above present…

New mechanism uncovered, causing potentially rapid Antarctic Glacier melt

An Australian-led research team found that sea levels may rise much faster than previously predicted by models, because changes by disruptive westerly winds, weren’t taken into account. Conservative estimates so far, projected irreversible melting in the course of a few centuries, depending on the temperature increase. Related Each degree of global warming might ultimately raise…

The Runaway Glaciers in West Antarctica

NASA/JPL press release, May 12, 2014: A new study by researchers at NASA and the University of California, Irvine, finds a rapidly melting section of the West Antarctic Ice Sheet appears to be in an irreversible state of decline, with nothing to stop the glaciers in this area from melting into the sea. The study presents…

The Rate of Sea-Level Rise

A new study paper out in nature (Nature Climate Change / 2014 / doi:10.1038/nclimate2159), explores why the rise of sea-level has slowed in the last decade. Unsurprisingly the slow-down coincidences with the observed climate hiatus (IPCC AR5, Ocean heat content uptake). Because  heat is distributed differently, depending on the state of ENSO (between El Nino or La Nina). Abstract: Present-day sea-level…

Spot On – Rising Seas in South Florida (PBS 2014)

PBS: Flood-prone South Florida considers proactive investment against rising seas March 19, 2014 (with Transcript).

Visit the new White House climate website https://climate.data.gov

Ancient 5,000-Year-Old Forest Unearthed by UK Storms

A sign for extreme change is when storms destroy ancient landmarks, unearth 1 million old foot prints (See video above) or reveal  pottery from the Iron Age and Romano-British time. Now they discovered ancient forest stumps. The BBC explains: Geologists believe extensive forests extended across Mount’s Bay in Penzance between 4,000 and 6,000 years ago. The shifting sands have also revealed…

Scientists: IPCC Underestimating Sea Level Rise

The Vision Prize is an online survey of scientists about climate risk. It’s an impartial and independent research platform for incentivized polling of experts on important scientific issues that are relevant to policymakers. Some of theirprevious survey results have found that about 90 percent of participating scientists believe that humans are the primary cause of…

The Fingerprints of Sea Level Change

This meeting was held March 31-April 2, 2011 at the AAAS Auditorium, in Washington, D.C. and was organized by Rita Colwell, Christopher Field, Jeffrey Shaman, and Susan Solomon Meeting Overview Climate science is addressing issues that require an increasingly interdisciplinary perspective, posing new challenges to scientists and to the organization and support of this science.…