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AGU: Geophysical Research Letters

 

Index Terms

  • Atmospheric Composition and Structure: Aerosols and particles
  • Atmospheric Composition and Structure: Cloud physics and chemistry
  • Meteorology and Atmospheric Dynamics: Tropical meteorology

Abstract

GEOPHYSICAL RESEARCH LETTERS, VOL. 29, 1125, 4 PP., 2002
doi:10.1029/2001GL014271

Tropical nitric acid clouds

Mark Hervig

G & A Technical Software, Newport News, Virginia, USA

Martin McHugh

G & A Technical Software, Newport News, Virginia, USA

The presence of nitric acid clouds near the tropical tropopause was proposed over a decade ago, although little has been learned about them since. Particle extinction measurements at three wavelengths from the Halogen Occultation Experiment offer compelling evidence for the existence of nitric acid clouds near the tropical tropopause. Most of these clouds are consistent with nitric acid trihydrate, and a small fraction can be explained by liquid ternary H2SO4-H2O-HNO3 aerosols.

Published 11 April 2002.

Citation: Hervig, M., and M. McHugh (2002), Tropical nitric acid clouds, Geophys. Res. Lett., 29(7), 1125, doi:10.1029/2001GL014271.

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