Photodissociation of acetone: Atmospheric implications of temperature-dependent quantum yields

Details Photodissociation of acetone: Atmospheric implications of temperature-dependent quantum yields Photodissociation of acetone: Atmospheric implications of temperature-dependent quantum yields

Apr 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3107110a&link_type=abstract

Geophysical Research Letters, Volume 31, Issue 7, CiteID L07110

Physics

12

Atmospheric Composition And Structure: Chemical Kinetic And Photochemical Properties, Atmospheric Composition And Structure: Constituent Sources And Sinks, Atmospheric Composition And Structure: Transmission And Scattering Of Radiation

Scientific paper

We have used a photochemical box model to investigate the effect of temperature-dependent quantum yields of acetone on the chemistry in the upper troposphere. The T-dependent quantum yields produce a photolysis (J) rate up to factor 3-10 slower than room temperature values. This reduced J rate significantly reduces the contribution of acetone to the mid-latitude and tropical UT HOx budgets by factors of 4 and 2 respectively, when constrained with location-specific aircraft observations. The calculated lifetime of acetone in the UT increases from ~75 to ~250 days at mid-latitudes and from ~10 to ~20 days in the tropics, for the conditions used here. This will significantly affect studies aimed at balancing the atmospheric acetone budget. Overall, these new quantum yields have large implications for our understanding of the role of acetone in the chemistry of the UT.

Affiliated with

Also associated with

No associations

Rating

Photodissociation of acetone: Atmospheric implications of temperature-dependent quantum yields 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 Photodissociation of acetone: Atmospheric implications of temperature-dependent quantum yields, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photodissociation of acetone: Atmospheric implications of temperature-dependent quantum yields will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-734079