Physics
Scientific paper
Aug 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000georl..27.2237h&link_type=abstract
Geophysical Research Letters, Volume 27, Issue 15, p. 2237-2240
Physics
38
Atmospheric Composition And Structure: Chemical Kinetic And Photochemical Properties, Atmospheric Composition And Structure: Troposphere-Composition And Chemistry, Hydrology: Glaciology
Scientific paper
Photochemical production and release of gas-phase NOx (NO+NO2) from the natural snowpack at a remote site in northern Michigan were investigated during the Snow Nitrogen and Oxidants in Winter study in January 1999. Snow was collected in an open 34 L chamber, which was then sealed with a transparent Teflon cover and used as an outdoor flow and reaction chamber. Significant increases in NOx mixing ratio were observed in synthetic and ambient air pulled through the sunlit chamber. [NOx] enhancements were correlated to ultraviolet sunlight intensity, reaching ~300 pptv under partially overcast midday, mid-winter conditions. These findings are consistent with NOx production from photolysis of snowpack NO3- the observed NOx release implies production of significant amounts of OH within the snow. Snowpack NO3- photolysis may therefore significantly alter boundary layer levels of both NOx and oxidized compounds over wide regions of the atmosphere.
Arsenault M. A.
Dibb Jack E.
Dziobak M. P.
Green Sarah A.
Honrath Richard E.
No associations
LandOfFree
Release of NOx from sunlight-irradiated midlatitude snow 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 Release of NOx from sunlight-irradiated midlatitude snow, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Release of NOx from sunlight-irradiated midlatitude snow will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-738242