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  • Flood, Victoria A.University of Toronto (author)

Evaluating modelled tropospheric columns of CH4, CO, and O3 in the Arctic using ground-based Fourier transform infrared (FTIR) measurements

  • Article/chapterEnglish2024

Publisher, publication year, extent ...

  • 2024
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:3578d2ad-030e-4038-9196-1756130835c9
  • https://research.chalmers.se/publication/539913URI
  • https://doi.org/10.5194/acp-24-1079-2024DOI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • This study evaluates tropospheric columns of methane, carbon monoxide, and ozone in the Arctic simulated by 11 models. The Arctic is warming at nearly 4 times the global average rate, and with changing emissions in and near the region, it is important to understand Arctic atmospheric composition and how it is changing. Both measurements and modelling of air pollution in the Arctic are difficult, making model validation with local measurements valuable. Evaluations are performed using data from five high-latitude ground-based Fourier transform infrared (FTIR) spectrometers in the Network for the Detection of Atmospheric Composition Change (NDACC). The models were selected as part of the 2021 Arctic Monitoring and Assessment Programme (AMAP) report on short-lived climate forcers. This work augments the model-measurement comparisons presented in that report by including a new data source: column-integrated FTIR measurements, whose spatial and temporal footprint is more representative of the free troposphere than in situ and satellite measurements. Mixing ratios of trace gases are modelled at 3-hourly intervals by CESM, CMAM, DEHM, EMEP MSC-W, GEM-MACH, GEOS-Chem, MATCH, MATCH-SALSA, MRI-ESM2, UKESM1, and WRF-Chem for the years 2008, 2009, 2014, and 2015. The comparisons focus on the troposphere (0-7km partial columns) at Eureka, Canada; Thule, Greenland; Ny Ålesund, Norway; Kiruna, Sweden; and Harestua, Norway. Overall, the models are biased low in the tropospheric column, on average by -9.7% for CH4, -21% for CO, and -18% for O3. Results for CH4 are relatively consistent across the 4 years, whereas CO has a maximum negative bias in the spring and minimum in the summer and O3 has a maximum difference centered around the summer. The average differences for the models are within the FTIR uncertainties for approximately 15% of the model-location comparisons.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Strong, KimberlyUniversity of Toronto (author)
  • Whaley, Cynthia H.Environment Canada (author)
  • Walker, Kaley A.University of Toronto (author)
  • Blumenstock, T.Karlsruher Institut für Technologie (KIT),Karlsruhe Institute of Technology (KIT) (author)
  • Hannigan, J. W.National Center for Atmospheric Research (author)
  • Mellqvist, Johan,1965Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)jome (author)
  • Notholt, J.Universität Bremen (author)
  • Palm, MathiasUniversität Bremen (author)
  • Röhling, Amelie N.Karlsruher Institut für Technologie (KIT),Karlsruhe Institute of Technology (KIT) (author)
  • Arnold, StephenUniversity of Leeds (author)
  • Beagley, S.R.Environment Canada (author)
  • Chien, Rong You (author)
  • Christensen, JesperÅrhus Universitet,Aarhus University (author)
  • Deushi, Makoto (author)
  • Dobricic, SrdjanEuropeiska kommissionens gemensamma forskningscentrum (JRC),Joint Research Centre (JRC), European Commission (author)
  • Dong, Xinyi (author)
  • Fu, Joshua S.Oak Ridge National Laboratory (author)
  • Gauss, M.Meteorologisk institutt,Norwegian Meteorological Institute (author)
  • Gong, WanminEnvironment Canada (author)
  • Langner, J.Sveriges meteorologiska och hydrologiska institut (SMHI),Swedish Meteorological and Hydrological Institute (SMHI) (author)
  • Law, Kathy S. (author)
  • Marelle, Louis (author)
  • Onishi, Tatsuo (author)
  • Oshima, Naga (author)
  • Plummer, David A.Environment Canada (author)
  • Pozzoli, LucaEuropeiska kommissionens gemensamma forskningscentrum (JRC),Joint Research Centre (JRC), European Commission (author)
  • Raut, Jean Christophe (author)
  • Thomas, Manu Anna (author)
  • Tsyro, S.Meteorologisk institutt,Norwegian Meteorological Institute (author)
  • Turnock, StevenMet Office,University of Leeds (author)
  • University of TorontoEnvironment Canada (creator_code:org_t)

Related titles

  • In:Atmospheric Chemistry and Physics24:2, s. 1079-11181680-73161680-7324

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