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Green World: Prof. Peter Terezakis • OART-UT 1057 • NYU Tisch

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November 18, 2020 by Peter Terezakis Leave a Comment

Greenland’s glaciers could lose more ice than previously thought, CNN

Greenland's glaciers could lose more ice than previously thought, raising concerns for sea level rise Helen Regan bylineCNN Digital Expansion 2016 Andrew Kann By Helen Regan and Drew Kann, CNN Updated 12:27 PM ET, Tue November 17, 2020

Filed Under: Arctic, Climate, David Holland, Denise Holland, Greenland, NYU, Science, Science gone right!, Sea level rise

November 16, 2020 by Peter Terezakis Leave a Comment

ANTARCTICA WEEK: Festival 2020

We are delighted to bring you the Antarctica Week Festival 2020 where students and the public have a unique opportunity to listen to those working on the International Thwaites Glacier Collaboration talk about what it's like to live and work in Antarctica. Two talks daily from Monday 30 November to Friday 4 December celebrate Antarctica Day - designated to when the Antarctic Treaty was ratified on 1 December 1959.

Filed Under: Antarctica, Climate, David Holland, Denise Holland, Science, Science gone right!, Sea level rise, Society, solutions, Water

November 16, 2020 by Peter Terezakis Leave a Comment

Arctic Oscillation

Arctic Oscillation



What is the Arctic Oscillation? Like El Niño and La Niña, the Arctic Oscillation (AO) is a big-picture of atmospheric conditions that influence weather. The AO, which alternates between two distinct modes, describes how pressure patterns are distributed over the Arctic region and the middle latitudes of the Northern Hemisphere. NSIDC director Mark Serreze, an expert on Arctic climate and weather, said, “When the Arctic Oscillation flips from one mode to another, that represents a fundamental change in the circulation of the atmosphere, the way the winds blow.” The AO’s seesaw pattern of changing conditions affects the Northern Hemisphere polar vortex, which is a region of cold air rotating from west to east. The polar vortex does not come and go; it is a permanent feature of the Earth system. Still, the vortex’s shape changes over time, affected by shifts in atmospheric pressure and temperature. Scientists describe these pressure and temperature shifts as changes in the AO.


The Arctic Oscillation (AO) is a large scale mode of climate variability, also referred to as the Northern Hemisphere annular mode. The AO is a climate pattern characterized by winds circulating counterclockwise around the Arctic at around 55°N latitude. When the AO is in its positive phase, a ring of strong winds circulating around the North Pole acts to confine colder air across polar regions. This belt of winds becomes weaker and more distorted in the negative phase of the AO, which allows an easier southward penetration of colder, arctic airmasses and increased storminess into the mid-latitudes.

Filed Under: Polar region, weather

November 15, 2020 by Peter Terezakis Leave a Comment

Michael Oppenheimer

Michael Oppenheimer is the Albert G. Milbank Professor of Geosciences and International Affairs in the Princeton School of Public and International Affairs, the Department of Geosciences, and the The High Meadows Environmental Institute (HMEI) at Princeton University. He is the Director of the Center for Policy Research on Energy and the Environment (C-PREE) and Faculty Associate of the Atmospheric and Ocean Sciences Program, the Princeton Institute for International and Regional Studies.

Michael Oppenheimer SB, PhD is the Albert G. Milbank Professor of Geosciences and International Affairs at Princeton University.  He is also the Director of the Center for Policy Research on Energy and the Environment at Princeton’s Woodrow Wilson School.  Oppenheimer is a long-time participant in the Intergovernmental Panel on Climate Change (IPCC), which won the Nobel Peace Prize in 2007. He now serves as a coordinating lead author on IPCC’s Special Report on Oceans, Cryosphere and Climate Change.  Oppenheimer is coeditor-in-chief of the journal Climatic Change.  He serves on the New York City Panel on Climate Change and is a science advisor to the Environmental Defense Fund. Oppenheimer is a Heinz Award winner and a Fellow of the American Association for the Advancement of Science. His research focuses on sea-level rise, migration, and other impacts of climate change from the perspectives of science, adaptation, and risk. Michael Oppenheimer has an SB degree from MIT in chemistry and a Ph.D. from the University of Chicago in chemical physics.  He joined the Princeton faculty in 2002 after more than two decades with the Environmental Defense Fund, where he served as chief scientist and manager of the Climate and Air Program. Earlier, he was an Atomic and Molecular Astrophysicist at the Harvard-Smithsonian Center for Astrophysics.   


Rapid ice melt and sea-level rise will be part of our global future — no matter what The Antarctic and Greenland ice sheets are melting at alarming rates due to climate change and will continue to do so for decades — even if the Paris climate agreement goals are met. Living on Earth November 09, 2020 · 3:00 PM EST
“By the end of this century,” Oppenheimer says, “depending on which projections you look at, the rate of sea-level rise could wind up being about five times what it was…in the 20th century. And we’re having trouble dealing with the 6 inches. We had trouble last century.”

his testimony. He joined four witnesses at the testimony: Tim Wirth, former senator from Colorado; Jeffrey Sachs, university professor and director of the Center for Sustainable Development at Columbia University; and Nicolas Loris, deputy director of the Thomas A. Roe Institute of Economic Policy Studies. At Princeton, Oppenheimer is the Albert G. Milbank Professor of Geosciences and International Affairs and the Princeton Environmental Institute, and director of the Center for Policy Research on Energy and the Environment, based at the Woodrow Wilson School of Public and International Affairs.


Testimony of  Dr. Michael Oppenheimer Princeton University, At the Oversight and Reform Committee – Subcommittee on Environment US House of Representatives, April 9, 2019, On Climate Change Science – a Historical Perspective


On Sunday, Jan. 12, Princeton University’s Michael Oppenheimer appeared on CBS’s “60 Minutes,” speaking about Venice with John Dickerson.

Filed Under: 60 Minutes, Antarctica, Arctic, Climate, climate change/disruption, Glaciers, Greenland, Mass Migrations, Sea level rise

November 15, 2020 by Peter Terezakis Leave a Comment

Thwaites

If Thwaites Glacier collapses, it would change global coastlines forever Scientists fear the collapse of Thwaites Glacier could one day destabilize surrounding glaciers and eventually trigger up to 11 feet of global sea level rise.


Thwaites Glacier


Huge Cavity in Antarctic Glacier Signals Rapid Decay, NASA JPL


Thwaites Explorer


ICE FIN:
Thwaites Melt


Ice Fin


The fast-flowing main trunk of Thwaites accelerated by 0.8 km/year, or 33%, between 1973 and 1996, and another 33% between 2006 and 2013 (7). Between 1970–2003 and 2010–2013, ice discharge increased at a rate of 2.2 Gt/year2, and the rate quadrupled in 2003–2010 (9.5 Gt/year2). More recently, parts of the glacier have been observed to thin as much as 4 m/year (8).

2020


Visiting the 'doomsday glacier' that’s melting away

A journey to the massive Antarctic glacier's future, and ours. Melting of Antarctica's massive Thwaites Glacier could add 1 to2 feet of global sea level rise in the next 50 to 100 years, and unlock far more in the years beyond.


Filed Under: Antarctica Tagged With: Ice Fin, Thwaites Glacier

November 15, 2020 by Peter Terezakis Leave a Comment

Oceans of Air


Earth Click the above interactive tool for visualizing air currents.

Filed Under: Air, Climate, weather

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