PIA07254: Selected Measurements of Total Arctic Column Ozone Amounts from Aura's Ozone Monitoring Instrument, 2004-2005 Arctic Winter
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- Original Caption Released with Image:
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Images from Aura's Ozone Monitoring Instrument showing the average total
column ozone during the months of January and March, and the total column
ozone on the single day of 11 March. Although there was near record
chemical ozone loss between January and March, comparing the January and
March images shows that on average the lowest total column ozone values
in polar regions are slightly higher in March than in January. This is
because of the other process that brought higher ozone into the vortex
region, thus compensating for the very significant chemical loss. The 11
March image shows that, despite the unremarkable overall March values, on
an individual day, chemical loss and dynamical processes combined to
result in localized regions of much lower ozone (which resulted in higher
UV exposure at the Earth's surface for individual days and places).
- Image Credit:
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NASA/JPL/Agency for Aerospace Programs (Netherlands)/Finnish Meteorological Institute
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