Tag: Climate Science

Ice Loss in West Antarctic is Speeding Up

by | 12.5.2014 at 2:19pm
West Antarctica NASA Michael Studinger

Glaciers in one part of West Antarctica are melting at triple the rate of a decade ago and have become the most significant contributor to sea level rise in that region, a new study says. The study found that the glaciers in the Amundsen Sea Embayment of West Antarctica have shrunk by an average of 83 gigatons a year for two decades—the equivalent of the weight of Mount Everest every two years.

AGU 2014: Key Events from The Earth Institute

by | 12.3.2014 at 1:03pm
corals-linsley

Scientists at Columbia University’s Earth Institute will present important talks at the Dec. 15-19 meeting of the American Geophysical Union, the world’s largest gathering of earth and space scientists. Here is a journalists’ guide in rough chronological order.

Why are Past Surface Temperatures and CO2 Concentrations Important?

by | 11.26.2014 at 3:36pm
IMG_0265

By burning fossil fuels for heating, electricity, transportation and other purposes, humans add CO2 to the atmosphere. Yet, by comparing ways in which the Earth’s temperature, CO2 concentration, sea level and ice sheets have changed in the past, we are able to learn valuable lessons about the climate system of today and tomorrow.

The Art and Science of Climate Change

by | 9.30.2014 at 3:34pm
Sebastião Salgado, Iceberg between Paulet Island and the South Shetland Islands on the Antarctic Channel. At sea level, earlier flotation levels are clearly visible where the ice has been polished by the ocean’s constant movement. High above, a shape resembling a castle tower has been carved by wind erosion and detached pieces of ice. The Antarctic Peninsula, 2005. © Sebastião Salgado/Amazonas images—Contact Press Images.

This fall, the photographs of Sebastião Salgado provide the springboard for an ambitious program of panel discussions, lectures and film screenings addressing the urgent issue of climate change, at the International Center of Photography in New York City.

8 Ways We Can Strengthen Development and Increase Climate Resilience

by | 9.25.2014 at 3:55pm
President Obama addresses the 2014 UN Climate Summit.

President Obama this week announced a set of actions designed to help populations here and abroad develop better resilience against drought, sea level rise and other consequences of a changing climate. At The Earth Institute, the International Research Institute for Climate and Society has been working on these issues for years — making regular climate forecasts, insuring farmers against bad weather, and using data to better anticipate outbreaks of disease, manage water resources and improve forest management, among other programs.

What Everyone Should Know About Climate Change

by | 9.17.2014 at 11:34am
Kroeker_Kristy UC Davis

Climate scientist William D’Andrea of the Lamont-Doherty Earth Observatory asked young scientists attending a symposium last October, “What do you wish everyone knew about climate change?” He turned the responses into this video, which covers the topic pretty well.

Faint Young Sun

by | 8.22.2014 at 10:31am
Image credit: Science online, J.F. Kasting

Through an ancient looking-glass,
Perhaps you’d see more H2 gas,
And if with denser gas collided,
Greater greenhouse warmth provided.

Ocean Sediments Tell a Surprising Climate Story

by | 8.13.2014 at 11:04am
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Geochemists Alexander van Geen and Jacob Mey helped coauthor a recent paper in the leading journal Science showing that warming climate in the future may not degrade oxygen supplies in some parts of the oceans as previously thought.

What Geology Has to Say About Global Warming

by | 7.11.2014 at 3:00pm
Cobscook Bay State Park, Maine. Photo: W. Menke

The most important lessons drawn from geology are that the earth’s climate can change radically, and rapidly. We can’t say precisely at what CO2 level we’re in danger of melting Antarctica, but that threshold could be reached in 150-300 years, if CO2 levels keep rising at the current rate.

Gavin Schmidt Named Director of Goddard Institute for Space Studies

by | 6.9.2014 at 2:15pm
GavinSchmit

NASA has named Gavin A. Schmidt to head its Goddard Institute for Space Studies (GISS), an affiliate of Columbia University’s Earth Institute.

Currently serving as deputy director, Schmidt takes over from long-time director James E. Hansen, who retired last year to open a separate climate science and advocacy center at the Earth Institute.