NASA satellite has confirmed the loss of Arctic ozone

NASA Aura satellite data show that the thickness of the ozone layer in the atmosphere over the Arctic in March dropped to near the minimum in the history of the observed values, said the NASA Earth Observatory.
As previously reported by RIA Novosti specialist German Institute for Polar and Marine Research, Alfred Wegener Institute (AWI) Markus Rex (Markus Rex), abnormally low temperatures in the stratosphere ozone layer, which protects the Earth from ultraviolet, caused a sharp decrease in the thickness of the Arctic region. A few weeks in February and March layer "lost" almost half the thickness of the layer in the middle of March is about 280 Dobson units (used to measure ozone in the atmosphere), despite the fact that the threshold value for the ozone hole has taken 220 Dobson units.
Spectrometer OMI (Ozone Monitoring Instrument) on board the satellite Aura also registered a decline of ozone over the same period last year.
"This reduction in the amount of ozone — not necessarily a big surprise. Ozone layer remains vulnerable, as the level of chlorine in the stratosphere remains high, despite the Montreal Protocol. His concentration falls slowly, because the compounds that destroy ozone, are extremely long-lived," — said the expert Ozone Space Flight Center NASA's Goddard Paul Newman (Paul Newman), whose words are reported NASA.
According to him, unlike the Antarctic, where a stable manner seasonal ozone hole in the Arctic, the thickness can vary quite significantly. For example, in the past year due to high temperatures in the stratosphere, the concentration levels are high enough, while in 2011, there is the opposite situation.
"The big question — why is this happening, why this year for the stratosphere such" quiet "and cold.'s A great question, the answer to that yet," — said Newman.
Rex in an interview with RIA Novosti noted that the decrease in the thickness of the ozone layer, the maximum speed which he wrote in mid-March, while continuing.
"We do not know when it will end, and it is difficult to say to what level will drop its concentration — yet we do not know when it will be fixed at least for this winter," — said the expert German Institute for Polar and Marine Research.

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