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NASA Leads Study of Unprecedented Arctic Ozone Loss

By Guest PostOctober 2, 2011Science1989 montreal protocol, alfred wegener institute for polar and marine research, amount of ozone, Antarctic, antarctic ozone hole, Arctic, arctic ozone loss, arctic polar vortex, arctic stratospheric temperatures, aura and calipso spacecraft, boulder, canada, chemical ozone destruction, chlorine monoxide, denmark, depletion of earth ozone layer, finland, Germany, gloria manney, Japan, jet propulsion laboratory in pasadena, low temperatures, NASA, new mexico institute of mining and technology in socorro, noaa earth system research laboratory, ozone hole, potsdam, russia, spain, stratosphere, stratospheric ozone layer, the netherlands, ultraviolet rays, united states, winter

PASADENA, Calif. – A NASA-led study has documented an unprecedented depletion of Earth’s protective ozone layer above the Arctic last winter and spring caused by an unusually prolonged period of extremely low temperatures in the stratosphere.

The study, published online Sunday, Oct. 2, in the journal Nature, finds the amount of ozone destroyed in the Arctic in 2011 was comparable to that seen in some years in the Antarctic, where an ozone “hole” has formed each spring since the mid-1980s. The stratospheric ozone layer, extending from about 10 to 20 miles (15 to 35 kilometers) above the surface, protects life on Earth from the sun’s harmful ultraviolet rays. (more…)

Optimizing Climate Change Reduction

Palo Alto, CA — Scientists at the Carnegie Institution’s Department of Global Ecology have taken a new approach on examining a proposal to fix the warming planet. So-called geoengineering ideas—large-scale projects to change the Earth’s climate—have included erecting giant mirrors in space to reflect solar radiation, injecting aerosols of sulfate into the stratosphere making a global sunshade, and much more. Past modeling of the sulfate idea looked at how the stratospheric aerosols might affect Earth’s climate and chemistry.

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NASA Leads Study of Unprecedented Arctic Ozone Loss

Optimizing Climate Change Reduction