Denitrification mechanism of the polar winter stratosphere by major volcanic eruptions Journal Article uri icon



  • The uptake of HNO3 by volcanic sulfuric acid droplets is investigated using a one dimensional sulfate aerosol model and recent laboratory data. HNO3 uptake by volcanic sulfate particles coupled with the sedimentation of the particles may lead to irreversible transfer of HNO3 from higher to lower altitudes in the polar stratosphere during winter. This denitrification mechanism is found to be strongly dependent on the sulfate aerosol loading and temperature. Model calculations suggest that anomalously large volcanic eruptions have caused a severe denitrification of the Arctic winter lower stratosphere. There is conflicting evidence for this mechanism in ice core nitrate records.

publication date

  • September 20, 1994

has restriction

  • closed

Date in CU Experts

  • June 9, 2014 2:28 AM

Full Author List

  • Bekki S

author count

  • 1

Other Profiles

International Standard Serial Number (ISSN)

  • 0148-0227

Additional Document Info

start page

  • 18871

end page

  • 18878


  • 99


  • D9