Publications

2019:

Wong AYH, Geddes JA, Tai A, and Silva S (under review), Importance of dry deposition parameterization choice in global simulations of surface ozone, Atmospheric Chemistry and Physics, https://doi.org/10.5194/acp-2019-429.

Demetillo AG , Anderson JF, Geddes JA, Yang X, Najacht EY, Herrera SA, Kabasares KM, Kotsakis AE, Lerdau MT, and Pusede SE (2019), Observing Severe Drought Influences on Ozone Air Pollution in California. Environmental Science & Technology, doi:10.1021/acs.est.8b04852.

2018:

Geddes JA, Martin RV, Bucsela EJ, McLinden CA, and Cunningham DJM (2018), Stratosphere-troposphere separation of nitrogen dioxide columns from the TEMPO geostationary satellite instrument. Atmospheric Measurement Techniques, doi.org:10.5194/amt-11-6271-2018.

Zhou SS, Tai APK, Sun S, Sadiq M, Heald CL, and Geddes JA (2018), Coupling between surface ozone and leaf area index in a chemical transport model: Strength of feedback and implications for ozone air quality and vegetation health. Atmospheric Chemistry and Physics, doi: 10.5194/acp-18-14133-2018.

Petroff A, Murphy JG, Thomas SC, and Geddes JA, Size-resolved aerosol fluxes above a temperate broadleaf forest. Atmospheric Environment, 190, 359-375, doi: 10.1016/j.atmosenv.2018.07.012.

2017:

Geddes JA and Martin RV (2017), Global deposition of total reactive nitrogen oxides from 1996 to 2014 constrained with satellite observations of NO2 columns. Atmospheric Chemistry and Physics, doi:10.5194/acp-17-10071-2017.

Larkin A, Geddes JA, Martin RV, Xiao Q, Liu Y, Marshall JD, Brauer M, and Hystad P (2017), A global land use regression model for nitrogen dioxide air pollution. Environmental Science & Technology, DOI: 10.1021/acs.est.7b01148.

Zheng T, Chen J, He L, Arain MA, Thomas SC, Murphy JG, Geddes JA, Black TA (2017), Inverting the maximum carboxylation rate (Vcmax) from the sunlit leaf photosynthesis rate derived from measured light response curves at tower flux sites. Agricultural and Forest Meteorology, 236: 48-66.

2016:

Heald CL and Geddes JA (2016), The Impact of Historical Land Use Change From 1850 to 2000 on Particulate Matter and Ozone. Atmospheric Chemistry and Physics, doi:10.5194/acp-16-14997-2016.

Larkin A, van Donkelaar A, Geddes JA, Martin RV, Hystad P (2016), Relationships between changes in urban characteristics and air quality in East Asia from 2000 to 2010. Environmental Science & Technology. doi:10.1021/acs.est.6b02549.

Silva SJ, Heald CL, Geddes JA, Austin KG, Kasibhatla PS, and Marlier ME (2016), Impacts of current and projected oil palm plantation expansion on air quality over Southeast Asia. Atmospheric Chemistry and Physicsdoi:10.5194/acp-16-10621-2016.

Geddes JA, Heald CL, Silva, SJ, and Martin RV (2016), Land cover change impacts on atmospheric chemistry: simulating large-scale tree mortality in the United States. Atmospheric Chemistry and Physics. 16, 2323-2340, doi:10.5194/acp-16-2323-2016.

Geddes JA, Martin RV, Boys BL, and van Donkelaar A (2016), Long term trends worldwide in ambient NO2 concentrations inferred from satellite observations. Environmental Health Perspectives. DOI:10.1289/ehp.1409567.

2015 and earlier:

Geddes JA, Murphy JG, Schurman J, Petroff A, and Thomas SC (2014), Net ecosystem exchange of an uneven-aged managed forest in central Ontario, and the impacts of a spring heat wave event. Agricultural and Forest Meteorology. 198-199: 105-115.

Pugliese SC, Murphy JG, Geddes JA, and Wang JM (2014), The impacts of precursor reduction and meteorology on ground-level ozone in the Greater Toronto Area. Atmospheric Chemistry and Physics. 14: 8197-8207.

Geddes JA and Murphy JG (2014), Observations of reactive nitrogen oxide fluxes by eddy covariance above two mid-latitude North American mixed hardwood forests. Atmospheric Chemistry and Physics. 14: 2939-2957.

Wang JM, Murphy JG, Geddes JA, Winsborough CL, Basiliko N, and Thomas SC (2013), Methane fluxes measured by eddy covariance and static chamber techniques at a temperate forest in central Ontario, Canada. Biogeosciences. 10: 4371-4382.

Geddes JA, and Murphy JG, (2012), The Science of Smog: Chemical concepts in ground level ozone and particular matter. Chapter 10 in The Handbook of Metropolitan Sustainability (Ed. Frank Zeman). Woodhead Publishing Ltd. Phildelphia PA.

Geddes JA, Murphy JG, Celarier EA, and O’Brien J (2012), Biases in long-term NO2 averages inferred from satellite observations due to cloud selection criteria. Remote Sensing of Environment. 124: 210-216.

Geddes JA, Murphy JG, and Wang DW (2009), Long term changes in nitrogen oxides and volatile organic compounds in Toronto and the challenges facing local ozone control. Atmospheric Environment. 43: 3407-3414.

Geddes JA and Moore GWK (2007), A climatology of sea ice embayments in the Cosmonaut Sea, Antarctica. Geophysical Research Letters. 34: DOI:10.1029/2006GRL027910.