Effect of near-IR photolysis of HO2NO2 on stratospheric chemistry

Physics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

1

Atmospheric Composition And Structure: Chemical Kinetic And Photochemical Properties

Scientific paper

We use a 3D model to assess the impact of the recently reported near-IR (NIR) photolysis of HO2NO2 on global stratospheric chemistry. Including this process in the model leads to a significant reduction in HO2NO2 for all latitudes and seasons. The effect is larger at high latitudes with the maximum reduction (>95% near 20 km) in winter. While the basic model strongly overestimates the MIPAS balloon observations of HO2NO2 at mid-high latitudes, this discrepancy is largely removed by including the NIR photolysis. In high latitude winter below 25 km the model still overestimates HO2NO2 but this may be due to remaining uncertainties in HO2NO2 formation/loss rates and modelled NO2. The NIR photolysis increases model HOx (OH + HO2). At high latitudes around 18 km HOx increases by over 30% all-year-round, with much larger enhancements (>70%) near the terminator. However, there is a corresponding NOx (NO + NO2) decrease of ~10% in high latitude summer. Consequently, at this altitude O3 decreases by only 1-2%.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Effect of near-IR photolysis of HO2NO2 on stratospheric chemistry 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 Effect of near-IR photolysis of HO2NO2 on stratospheric chemistry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effect of near-IR photolysis of HO2NO2 on stratospheric chemistry will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-997719

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.