Articles | Volume 21, issue 11
Research article
15 Jun 2021
Research article |  | 15 Jun 2021

Large hemispheric difference in nucleation mode aerosol concentrations in the lowermost stratosphere at mid- and high latitudes

Christina J. Williamson, Agnieszka Kupc, Andrew Rollins, Jan Kazil, Karl D. Froyd, Eric A. Ray, Daniel M. Murphy, Gregory P. Schill, Jeff Peischl, Chelsea Thompson, Ilann Bourgeois, Thomas B. Ryerson, Glenn S. Diskin, Joshua P. DiGangi, Donald R. Blake, Thao Paul V. Bui, Maximilian Dollner, Bernadett Weinzierl, and Charles A. Brock


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Referee comment', Anonymous Referee #1, 11 Feb 2021
    • AC1: 'Reply on RC1', Christina Williamson, 16 Mar 2021
  • RC2: 'Comment on acp-2021-22', Anonymous Referee #2, 01 Mar 2021
    • AC2: 'Reply on RC2', Christina Williamson, 16 Mar 2021

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Christina Williamson on behalf of the Authors (06 Apr 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (11 Apr 2021) by Kostas Tsigaridis
Short summary
Aerosols in the stratosphere influence climate by scattering and absorbing sunlight and through chemical reactions occurring on the particles’ surfaces. We observed more nucleation mode aerosols (small aerosols, with diameters below 12 nm) in the mid- and high-latitude lowermost stratosphere (8–13 km) in the Northern Hemisphere (NH) than in the Southern Hemisphere. The most likely cause of this is aircraft emissions, which are concentrated in the NH at similar altitudes to our observations.
Final-revised paper