Observations of depleted stratospheric NO2 following the Pinatubo volcanic eruption

Details Observations of depleted stratospheric NO2 following the Pinatubo volcanic eruption Observations of depleted stratospheric NO2 following the Pinatubo volcanic eruption

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19..211j&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 19, Jan. 24, 1992, p. 211-213.

Physics

Optics

78

Aerosols, Air Pollution, Nitrogen Oxides, Ozonometry, Stratosphere, Volcanoes, Atmospheric Optics, Nitric Acid, Ozone Depletion

Scientific paper

Following the eruption of Mount Pinatubo, and the subsequent transport of volcanic aerosol, significant depletions of stratospheric NO2 were observed at Lauder. New Zealand. The effect was more pronounced in NO2 columns measured at sunrise than those measured at sunset, and observed column amounts were reduced by more than 40 percent in October 1991. Concurrent ozone measurements obtained using the same technique were compared with Dobson measurements which confirmed that in October, apparent reduction of only 10-15 percent can be explained by geometric changes in scattering caused by the aerosols. A real depletion of NO2 is concluded to have occurred. NO2 levels at twilight are dependent on many factors, but these observations can provide supporting evidence for the hypothesis that heterogeneous processes convert N2O5 to HNO3 on the sulfate aerosol surfaces. If this proves to be the case it could, in the presence of current high chlorine levels and volcanically enhanced aerosol densities, lead to accelerated global ozone depletion.

Affiliated with

Also associated with

No associations

Rating

Observations of depleted stratospheric NO2 following the Pinatubo volcanic eruption 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 Observations of depleted stratospheric NO2 following the Pinatubo volcanic eruption, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observations of depleted stratospheric NO2 following the Pinatubo volcanic eruption will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-937471