AGU 2015: Eric Rignot – Ice Sheet Systems and Sea Level Change

Scientific Discipline Cryosphere Speaker Eric Rignot (NASA Jet Propulsion Laboratory) Abstract Modern views of ice sheets provided by satellites, airborne surveys, in situ data and paleoclimate records while transformative of glaciology have not fundamentally changed concerns about ice sheet stability and collapse that emerged in the 1970’s. Motivated by the desire to learn more about…

AGU 2015: Michael Mann explains why Scientists need to speak up more #Ethics #PrecautionaryPrinciple

AGU 14 December 2015: If You See Something, Say Something Speakers: Michael Mann (Pennsylvania State University), Kent Peacock (University of Lethbridge) Scientists have a collective ethical obligation to communicate the implications of their science and to communicate it as accurately and fully as possible. Nowhere is that obligation more profound than in areas of research,…

AGU 2015: Global impacts of the 2015 – 2016 El Niño

The unfolding 2015-16 El Niño event is already the strongest the world has seen since 1997-98, and people all over the world are feeling or are expected to feel its impact in a variety of ways. Scientists from NASA and NOAA will present findings on El Niño’s global reach as seen from the vantage point…

AGU 2015: The impacts of heat stress on densely populated regions in the 21st century

Globally, heat kills more people than any other weather-related event. With temperatures and humidity expected to increase in the coming decades, heat stress is projected to have increasingly severe impacts on many regions of the world. Here, researchers estimate the global exposure to fatal heat stress throughout the 21st century and its effects on human…

AGU 2015: Alaska’s thawing permafrost Latest results and future projections

Alaska’s permafrost is starting to thaw as the climate warms, and scientists project there will be even greater thawing of the frozen soils in the coming decades, releasing carbon into the atmosphere, and impacting ecological systems and infrastructure. A panel of permafrost experts will unveil new findings about permafrost degradation in Alaska, where permafrost covers…

AGU 2015: Jennifer Francis recent studies on Weather Blocking Patterns

Recent Changes in Blocking Characteristics Assessed Using Self-Organizing Maps Speaker: Jennifer Ann Francis Blocking anticyclones are known to be associated with persistent weather patterns that often lead to extreme weather events. An outstanding question, however, is whether the frequency and/or intensity of these dynamical features are changing in response to human-caused climate change, and in…

Novel climate proxy reveals CO2 content of Earth’s atmosphere, of the past 400 million years

The study New constraints on atmospheric CO2 concentration for the Phanerozoic (DOI: 10.1002/2014GL060457), by Peter J. Franks, Dana L. Royer, David J. Beerling , Peter K. Van de Water, David J. Cantrill, Margaret M. Barbour, and Joseph A. Berry, estimates CO2 in Earth history based on a new climate proxy. Estimates are in particular based…

Abrupt Climate Change In The Arctic (And Beyond) An Update

AGU Fall Meeting 2013: Our understanding of future Arctic change is informed by the history of past changes, which often have been both large and abrupt. The well-known ice-age events such as the Younger Dryas show how sea-ice changes can amplify forcing to produce very large responses, with wintertime sea ice especially important. These changes…

Rebound an Earth Story


Glacial isostatic adjustment, why we have glacial and interglacial periods, how we can reconstruct climate history, and how the Earth is responding to the retreat of the continental glaciers.

Video presentation by Meg Rosenburg (AGU Fall Meeting 2013)
Post-glacial rebound

AGU: Human – induced climate change requires urgent action

Humanity is the major influence on the global climate change observed over the past 50 years. Rapid societal responses can significantly lessen negative outcomes. “Human activities are changing Earth’s climate. At the global level, atmospheric concentrations of carbon dioxide and other heat-trapping greenhouse gases have increased sharply since the Industrial Revolution. Fossil fuel burning dominates…

The Battle to Communicate Climate Change: Lessons from The Front Lines

AGU Chapman Conference on Communicating Climate Science: A Historic Look to the Future 08 June 2013 — 13 June 2013, Granby, CO, USA Presenter: Michael Mann Sunday, June 9, 2013, 10:25 a.m. – 10:45 a.m. Session: Perspectives on Communication of the Climate Science II Abstract Title: The Battle to Communicate Climate Change: Lessons from The…

Melting Sea Ice in the Arctic

Five Myths About Arctic Sea Ice http://sites.agu.org/sharingscience/f… Changes in Arctic sea ice coverage are happening at unprecedented rates, with 2012 setting a new record low for sea ice extent. Our ability to predict changes of sea ice loss and understand the impacts on society, from commercial shipping to resource availability, will be driven by further…