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First observations of iodine oxide from space

Show simple item record Saiz-Lopez, Alfonso Chance, Kelly Liu, Xiong Kurosu, Thomas P. 2008-11-04T21:36:37Z 2008-11-04T21:36:37Z 2007-06-29
dc.identifier.citation 3eophys. Res. Lett., 34, L12812, doi:10.1029/2007GL030111 en_US
dc.identifier.clearanceno 07-1181
dc.description.abstract We present retrievals of IO total columns from the Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY) satellite instrument. We analyze data for October 2005 in the polar regions to demonstrate for the first time the capability to measure IO column abundances from space. During the period of analysis (i.e. Southern Hemisphere springtime), enhanced IO vertical columns over 3 x 10(13) molecules cm(-2) are observed around coastal Antarctica; by contrast during that time in the Artic region IO is consistently below the calculated instrumental detection limit for individual radiance spectra ( 2 - 4 x 10(12) molecules cm(-2) for slant columns). The levels reported here are in reasonably good agreement with previous ground-based measurements at coastal Antarctica. These results also demonstrate that IO is widespread over sea-ice covered areas in the Southern Ocean. The occurrence of elevated IO and its hitherto unrecognized spatial distribution suggest an efficient iodine activation mechanism at a synoptic scale over coastal Antarctica en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher American Geophysical Union. en_US
dc.subject marine boundary-layer en_US
dc.subject stratospheric ozone en_US
dc.subject molecular-iodine en_US
dc.subject io en_US
dc.subject chemistry en_US
dc.subject emissions en_US
dc.title First observations of iodine oxide from space en_US
dc.type Article en_US

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