The effect of Mt. Pinatubo aerosol on the HNO3 column over Mauna Loa, Hawaii

Details The effect of Mt. Pinatubo aerosol on the HNO3 column over Mauna Loa, Hawaii The effect of Mt. Pinatubo aerosol on the HNO3 column over Mauna Loa, Hawaii

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21.1003d&link_type=abstract

Geophysical Research Letters, Volume 21, Issue 11, p. 1003-1006

Physics

14

Atmospheric Composition And Structure: Aerosols And Particles, Atmospheric Composition And Structure: Transmission And Scattering Of Radiation, Meteorology And Atmospheric Dynamics: General Or Miscellaneous

Scientific paper

A very high resolution infrared solar spectrometer system for the Network for Detection of Stratospheric Change has been routinely operated at the Mauna Loa Observatory in Hawaii since November, 1991. Solar absorption spectra are normally taken one day a week at sunrise. We report the analysis of these spectra for the vertical column amount of nitric acid (HNO3) vapor. The observations began four months after the arrival of volcanic aerosols from Mt. Pinatubo over the site. Although quite variable, total HNO3 columns were initially about 7×1015 molecules/cm2 and have decreased about 30% in the following two years.

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