Articles | Volume 17, issue 5
Research article
15 Mar 2024
Research article |  | 15 Mar 2024

A novel infrared imager for studies of hydroxyl and oxygen nightglow emissions in the mesopause above northern Scandinavia

Peter Dalin, Urban Brändström, Johan Kero, Peter Voelger, Takanori Nishiyama, Trond Trondsen, Devin Wyatt, Craig Unick, Vladimir Perminov, Nikolay Pertsev, and Jonas Hedin


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on amt-2023-208', Anonymous Referee #2, 24 Nov 2023
  • RC2: 'Comment on amt-2023-208', Anonymous Referee #1, 05 Dec 2023

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Peter Dalin on behalf of the Authors (26 Jan 2024)  Author's response   Author's tracked changes   Manuscript 
ED: Referee Nomination & Report Request started (26 Jan 2024) by Christian von Savigny
RR by Anonymous Referee #1 (01 Feb 2024)
RR by Anonymous Referee #2 (06 Feb 2024)
ED: Publish as is (07 Feb 2024) by Christian von Savigny
AR by Peter Dalin on behalf of the Authors (09 Feb 2024)
Short summary
A novel infrared imaging instrument (OH imager) was put into operation in November 2022 at the Swedish Institute of Space Physics in Kiruna (Sweden). The OH imager is dedicated to the study of nightglow emissions coming from the hydroxyl (OH) and molecular oxygen (O2) layers in the mesopause (80–100 km). Based on a brightness ratio of two OH emission lines, the neutral temperature is estimated at around 87 km. The average daily winter temperature for the period January–April 2023 is 203±10 K.