Articles | Volume 18, issue 5
https://doi.org/10.5194/acp-18-3387-2018
https://doi.org/10.5194/acp-18-3387-2018
Research article
 | 
08 Mar 2018
Research article |  | 08 Mar 2018

High-resolution quantification of atmospheric CO2 mixing ratios in the Greater Toronto Area, Canada

Stephanie C. Pugliese, Jennifer G. Murphy, Felix R. Vogel, Michael D. Moran, Junhua Zhang, Qiong Zheng, Craig A. Stroud, Shuzhan Ren, Douglas Worthy, and Gregoire Broquet

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Subject: Gases | Research Activity: Atmospheric Modelling and Data Analysis | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
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Cited articles

Bousetta, S., Balsamo, G., Beljaars, A., Panareda, A. A., Calvet, J. C., Jacobs, C., van den Hurk, B., Viterbo, P., Lafont, S., Dutra, E., Jarlan, L., Balzarolo, M., Papale, D., and van der Werf, G.: Natural Land Carbon Dioxide Exchanges in the ECMWF Integrated Forecasting System: Implementation and Offline Validation, J. Geophys. Res.-Atmos., 118, 5923–5946, 2013.
Bréon, F. M., Broquet, G., Puygrenier, V., Chevallier, F., Xueref-Remy, I., Ramonet, M., Dieudonné, E., Lopez, M., Schmidt, M., Perrussel, O., and Ciais, P.: An attempt at estimating Paris area CO2 emissions from atmospheric concentration measurements, Atmos. Chem. Phys., 15, 1707–1724, https://doi.org/10.5194/acp-15-1707-2015, 2015.
Burrows, W. R.: Objective Guidance for 0–24-Hour and 24–48-Hour Mesoscale Forecasts of Lake-Effect Snow using CART, Am. Meteorol. Soc., 6, 357–378, 1991.
C40 Cities: C40 Cities: Global Leadership on Climate Change, available at: http://www.c40.org/cities/toronto, last access: 12 October, 2016.
Chan, D., Ishizawa, M., Higuchi, K., Maksyutov, S., and Chen, J.: Seasonal CO2 Rectifier Effect and Large-Scale Extratropical Atmospheric Transport, J. Geophys. Res., 113, D17309, https://doi.org/10.1029/2007JD009443, 2008.
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Short summary
We developed the Southern Ontario CO2 Emissions (SOCE) inventory, which identifies the spatial and temporal distribution (2.5 km and hourly, respectively) of CO2 emissions from seven source sectors. When the SOCE inventory was used with a chemistry transport model, we found strong agreement between modelled and measured mixing ratios. We were able to quantify that natural gas combustion contributes > 80 % of CO2 emissions at nighttime while on-road emissions contribute > 70 % during the day.
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