Snowpack nitrate photolysis drives the summertime atmospheric nitrous acid (HONO) budget in coastal Antarctica

• Main Authors: Bond, Amelia M. H., Frey, Markus M., Kaiser, Jan, Kleffmann, Jörg, Jones, Anna E., Squires, Freya A.
• Format: Text
• Language: English
• Published: 2023
• Subjects: Antarctic; Halley Station; Antarc*; Antarctica
• Online Access: https://doi.org/10.5194/acp-2022-845; https://acp.copernicus.org/preprints/acp-2022-845/

Measurements of atmospheric nitrous acid (HONO) amount fraction and flux density above snow were carried out using a long path absorption photometer at Halley station in coastal Antarctica between 22 January and 3 February 2022. The mean±1σ HONO amount fraction was (2.1 ± 1.5) pmol mol −1 and showed...