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 Yamanouchi1, Stephanie Conway1, Kimberly Strong1, Orfeo Colebatch1, Erik Lutsch1, Sebastien Roche1, Jeffrey Taylor2, Cynthia H. Whaley3, and Aldona Wiacek4 Shoma Yamanouchi et al.
  • 1Department of Physics, University of Toronto, Toronto, M5S 1A7, Canada
  • 2Nova Scotia Community College, Halifax, B3K 2T3, Canada
  • 3Environment and Climate Change Canada, Victoria, V8W 2Y2, Canada
  • 4Saint Mary’s University, Halifax, B3H 3C3, Canada

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 The measurements have been archived in the Network for Detection of Atmospheric Composition Change (NDACC) data repository in Hierarchical Data Format version 4 (HDF4) files following the Generic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: open (until 20 Mar 2023)

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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.