Ozone depletion during the solar proton events of October/November 2003 as seen by SCIAMACHY

Details Ozone depletion during the solar proton events of October/November 2003 as seen by SCIAMACHY Ozone depletion during the solar proton events of October/November 2003 as seen by SCIAMACHY

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jgra..11009s39r&link_type=abstract

Journal of Geophysical Research, Volume 110, Issue A9, CiteID A09S39

Astronomy and Astrophysics

Astrophysics

39

Ionosphere: Particle Precipitation, Atmospheric Composition And Structure: Middle Atmosphere: Composition And Chemistry, Atmospheric Composition And Structure: Instruments And Techniques, Interplanetary Physics: Energetic Particles (7514), Solar Physics, Astrophysics, And Astronomy: Magnetic Fields

Scientific paper

We use atmospheric ozone density profiles between 35 and 65 km altitude derived from SCIAMACHY limb measurements to quantify the ozone changes caused by the solar proton events from 26 October to 6 November 2003, known as the ``Halloween storm.'' Detailed maps and daily resolved time series up to 5 weeks after the first event are compared with the results from a chemistry, transport, and photolysis model of the middle atmosphere that includes NOx and HOx production due to energetic particle precipitation. The general features of the ozone loss are captured by the model fairly well. A strong ozone depletion of more than 50% even deep into the stratosphere is observed at high geomagnetic latitudes in the Northern Hemisphere, whereas the observed ozone depletion in the more sunlit Southern Hemisphere is much weaker. Reasons for these interhemispheric differences are given. Two regimes can be distinguished, one above about 50 km dominated by HOx (H, OH, HO2) driven ozone loss, one below about 50 km, dominated by NOx (NO, NO2) driven ozone loss. The regimes display a different temporal evolution of ozone depletion and recovery. We observe for the first time an establishment of two contemporaneous maxima of ozone depletion at different altitudes, which solely can be explained by these regimes.

Affiliated with

Also associated with

No associations

Rating

Ozone depletion during the solar proton events of October/November 2003 as seen by SCIAMACHY does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Ozone depletion during the solar proton events of October/November 2003 as seen by SCIAMACHY, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ozone depletion during the solar proton events of October/November 2003 as seen by SCIAMACHY will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-855988