Preprints
https://doi.org/10.5194/essd-2022-470
https://doi.org/10.5194/essd-2022-470
23 Jan 2023
 | 23 Jan 2023
Status: this preprint is currently under review for the journal ESSD.

NDACC FTIR trace gas measurements at the University of Toronto Atmospheric Observatory from 2002 to 2020

Shoma Yamanouchi, Stephanie Conway, Kimberly Strong, Orfeo Colebatch, Erik Lutsch, Sebastien Roche, Jeffrey Taylor, Cynthia H. Whaley, and Aldona Wiacek

Abstract. Nineteen years of atmospheric composition measurements made at the University of Toronto Atmospheric Observatory (TAO, 43.66° N, 79.40° W, 174 m.a.s.l.) are presented. These are retrieved from Fourier Transform InfraRed (FTIR) solar absorption spectra recorded with an ABB Bomem DA8 spectrometer from May 2002 to December 2020. The retrievals have been optimized for fourteen species: O3, HCl, HF, HNO3, CH4, C2H6, CO, HCN, N2O, C2H2, H2CO, CH3OH, HCOOH and NH3 using the SFIT4 algorithm. The measurements have been archived in the Network for Detection of Atmospheric Composition Change (NDACC) data repository in Hierarchical Data Format version 4 (HDF4) files following the Generic Earth Observation Metadata Standard (GEOMS) and are also publicly available on Borealis, the Canadian Dataverse Repository. In this paper, we describe the instrumentation, the retrieval strategy, the vertical sensitivity of the retrievals, the quality assurance process, and error analysis of the TAO FTIR measurements, and present the current version of the time series.

Shoma Yamanouchi et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on essd-2022-470', Anonymous Referee #1, 02 Mar 2023
  • RC2: 'Comment on essd-2022-470', Frank Hase, 22 Mar 2023

Shoma Yamanouchi et al.

Data sets

Replication Data for: NDACC FTIR trace gas measurements at the University of Toronto Atmospheric Observatory from 2002-2020 Yamanouchi, Shoma; Conway, Stephanie; Strong, Kimberly; Colebatch, Orfeo; Lutsch, Erik; Roche, Sébastien; Taylor, Jeffery; Whaley, Cynthia; Wiacek, Aldona https://doi.org/10.5683/SP2/VC8JMC

Shoma Yamanouchi et al.

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Short summary
Nineteen years of atmospheric composition measurements made at the University of Toronto Atmospheric Observatory (TAO, 43.66° N, 79.40° W, 174 m.a.s.l.) are presented. These are retrieved from Fourier Transform InfraRed (FTIR) solar absorption spectra recorded with a spectrometer from May 2002 to December 2020. The retrievals have been optimized for fourteen species: O3, HCl, HF, HNO3, CH4, C2H6, CO, HCN, N2O, C2H2, H2CO, CH3OH, HCOOH and NH3.