29 Sep '14, 11pm

Antarctic ice melt causes small shift in gravity

Antarctic ice melt causes small shift in gravity

Though we all learned in high school physics that gravity is a constant, it actually varies slightly depending on where you are on the Earth’s surface and the density of the rock (or, in this case, ice) beneath your feet. During a four-year mission, the ESA satellite mapped these changes in unprecedented detail and was able to detect a significant decrease in the region of Antarctica where land ice is melting fastest . The new results in West Antarctica were achieved by combining the high-resolution gravity field measurements from the ESA satellite with a longer-running but lower resolution gravity-analyzing satellite mission called Grace, which is jointly operated by the United States and Germany. Scientists hope to scale up this analysis to all of Antarctica soon, which could provide the clearest picture yet of the pace global warming is taking in the frozen continent. C...

Full article: http://grist.org/climate-energy/antarctic-ice-melt-causes...

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Ice sheets will be melting, and raising seas, for centuries to come - The Ecologist

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theecologist.org 28 Sep '14, 11am

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Antarctic sea ice hits a record max, and that’s not good via @grist

Antarctic sea ice hits a record max, and that’s...

grist.org 19 Sep '14, 7pm

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