A dried-up riverbed at Huangyangchuan reservoir in Lanzhou, China. Sign up for Take Action Now and get three actions in your inbox every week.
Human beings typically do our worst environmental damage in the places we live and work—clear-cutting forests, strip-mining mountains. Antarctica, however, was more or less out of reach. In Marchthe sea ice around both poles reached a record low for that time of year.
In July, a 1 trillion—ton iceberg, roughly the size of Delaware, calved off of the Larsen C ice shelf in western Antarctica. As it melts and sloughs off the land, it raises sea levels worldwide.
According to one study, if greenhouse-gas emissions continue at their current rate, low-lying areas around the world could by deluged by up to 4 ft. NASA has long employed satellites to monitor weather and climate from space; from tothe ICESat satellite circled the Earth in a north-south orbit, keeping an eye on the poles.
The most detailed work requires getting a lot closer. Over the course of eight- to hour expeditions covering up to 2, air miles out and back, the flights maintain an average cruising altitude of just 1, ft. Having spent much of his career covering unrest and suffering in the Arab world, Pellegrin this time turned his attention to a far slower, seemingly less deadly kind of conflict, but one that is doing its own kind of violence on a global scale.
No single mission is likely to produce breakthrough results. That calls for a lot of different methods and tools.
This massive chunk of free-floating sea ice is about ft. The thinning of the ice, for example, is measured with the help of both the laser altimeter, which detects small changes in the elevation of the ice and snow cover; and a shallow radar, which probes beneath the surface.
The radar also helps distinguish between ice and snow—a critical distinction. Surface thickness can be lost as ice melts away, but more than restored in the next snowfall.
The gravimeter measures the tiny differences in gravitational tugging caused by materials of different density in the bedrock, another indicator of composition.
Other onboard instruments include a sensor that measures the temperature of the ice—the critical metric that determines if and when it will start to melt—and a digital mapping system that captures dozens of images of the Antarctic terrain.
They can then be assembled into a vast mosaic providing a look at the entire region. A view from the plane above the clouds in November; a calved iceberg.
He took advantage of imagery captured by IceBridge to get a different perspective.
The pictures captured on the trip are making a much more immediate impression.Oct 09, · Climate changes occur naturally in response to a multitude of triggers, With or without you and in spite of you.
Tell your liberal teachers, the NEA, Al Gore, the U.N. etc. to stop being so vain and stop teaching kids that they can vainly combat something that they have no control ph-vs.com: Resolved. [ Yet another wise, thoughtful, and wide-ranging essay from my favorite writer of the many facets of a civilization about to decline as it is starved of the fossil fuels that feed it.
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Although the topics are quite varied, Heinberg weaves them into a cloth that is more than the sum of the parts in. Climate change is happening particularly rapidly in parts of Antarctica, where it has resulted in dramatic ice shelf collapses and glacier recession.
Culture and Climate Change: Scenarios focuses on the imagining and representation of climate change scenarios.
The use of scenarios in the context of climate change is widespread - in business, in climate policy, climate modelling and climate adaptation planning.
Read Pope Francis' new encyclical online, in PDF, or in paperback form. Discover the Catholic Church's teaching on ecology, climate change, and care for creation. Mike Hulme is Professor of Climate and Culture in theDepartment of Geography at King’s College London.
His Why We Disagree about Climate Change won TheEconomist’s ‘Book of the Year Award’.He hascontributed to public debates in the UK and US, writing for TheGuardian and the Wall Street ph-vs.com to he was the Founding Director of the Tyndall Centre for .