NOx descent in the Arctic middle atmosphere in early 2009

Details NOx descent in the Arctic middle atmosphere in early 2009 NOx descent in the Arctic middle atmosphere in early 2009

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3618811r&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 18, CiteID L18811

Physics

26

Atmospheric Composition And Structure: Middle Atmosphere: Composition And Chemistry, Atmospheric Composition And Structure: Middle Atmosphere: Constituent Transport And Chemistry (3334), Atmospheric Processes: Mesospheric Dynamics, Atmospheric Processes: Middle Atmosphere Dynamics (0341, 0342), Ionosphere: Particle Precipitation

Scientific paper

Measurements by the Atmospheric Chemistry Experiment show that the amount of NOx (NO + NO2) produced by energetic particle precipitation (EPP) that descended from the Arctic mesosphere and lower thermosphere into the stratosphere in early 2009 was up to ˜50 times higher than average in 2005, 2007 and 2008. This is of note because the level of EPP in the preceding months was very low, suggesting that excess production of NOx was not the cause of the enhancements. Rather, the enhancements are attributed to unusually strong descent in the middle atmosphere. This is the third time on record that extraordinary meteorology contributed to descent of excess NOx. The results confirm that EPP impacts on the middle atmosphere can be large even in the absence of exceptional EPP, and highlight the need to continually measure NOx throughout the polar region from the stratosphere to the lower thermosphere.

Affiliated with

Also associated with

No associations

Rating

NOx descent in the Arctic middle atmosphere in early 2009 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 NOx descent in the Arctic middle atmosphere in early 2009, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and NOx descent in the Arctic middle atmosphere in early 2009 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1192262