Category Archives: Latest Research

Experts Estimate of Carbon Emissions from Subsea Permafrost

Environmental Research Letters, December 22 Emissions from subsea permafrost – existing in near-coastal waters, mostly inundated at the end of the last Ice Age – long have comprised a question mark for global carbon budgets.  This expert assessment, with 32 co-authors estimated the total amount of subsea permafrost as containing 560 Gt carbon in organic […]

Increased Outburst Flood Hazard in Peru from Climate Warming and Glacier Retreat

Nature, February 4 Over the past 140 years, the Cordillera Blanca region of the Peruvian Andes has warmed by 1°C, with 95% of that warming attributed to human emissions. This warming has triggered a dramatic acceleration in the retreat of the Palcaraju Glacier, with its meltwater causing expansion of Lake Palcacocha at the glacier’s base. […]

Massive Glacier in East Antarctica Shows Signs of Vulnerability

The Cryosphere, February 11 The massive Denman Glacier in East Antarctica, a 19 km-wide stream of ice that flows over the deepest undersea canyon of the continent, holds 1.5m of sea-level rise and is beginning to show signs of instability; potentially in response to the warming ocean at its base. During the past 50 years, […]

IPCC Projections of 2100 Sea-level Rise May Be Too Conservative

Ocean Science, February 2 Ice sheets and oceans take centuries to fully respond to changes in greenhouse gas concentrations and atmospheric temperatures, and the amount of sea level rise that will take place by 2100 is only the beginning of this response, which will take place over many centuries.  New models that correlate average global […]

Heightened Risk of Episodic Flooding and Water Shortages in the Himalayan Region

Nature Reviews Earth & Environment, February 2 Glacier melt and meltwater run-off in the Himalayan region will likely peak in the next few decades (around 2050 under a medium emissions scenario) and then decline as the glaciers shrink. Glaciers in nearly all this region have seen accelerating rates of ice loss for the past several […]

Mineral Phosphorus Accelerates Surface Melt on the Greenland Ice Sheet

Nature Communications, January 25 Glacier ice algae blooms on the surface of the Greenland Ice Sheet form a dark layer of microbial growth that increases the amount of solar radiation the ice absorbs, melting it more rapidly. This phenomenon largely occurs on the southwest portion of the ice sheet, and is responsible for up to […]

New Measurements Show Greater Warming of the Southern Ocean

Nature Communications, January 21 New analysis of a rare time series of temperature data, collected over 25 years aboard the French Antarctic station’s resupply vessel L’Astrolabe in the portion of the Southern Ocean that separates Australia and Antarctica, shows rapid ocean warming beneath the surface layers of water circling Antarctica, at a rate of 0.3°C warming per […]

Greenland’s Surface Also to Show Net Ice Loss at Global Temperatures Above ~2.5°C

Geophysical Research Letters, January 19 Greenland has been losing mass and contributing to sea-level rise since the 1980’s, according to most studies, with most of this loss occurring through calving of icebergs where glaciers running from the ice sheet meet the ocean. Melting of the surface of the ice sheet each summer however is largely offset […]