Mark W. Shephard

Current research and/or projects

Main efforts include utilizing satellite remote sensing to further advance the monitoring and air quality modelling of the air we breathe. Also contribute to the research weather extremes for both the current and future climate in order to help Canadians interpret and adapt to changes in our climate.

Satellite remote sensing and radiative transfer knowledge for both climate and air quality research (e.g. ammonia, methanol, formic acid emissions). This includes being on international satellite Science Teams and involvement is recent projects such as the Canada-Alberta Oil Sands Environmental Monitoring project.

Professional activities / interests

Education and awards

NASA Goddard Space Flight Center Award, 2005

Atmospheric and Environmental Research Employee of the Year Award, 2008

M.Sc. Atmospheric and Oceanic Science, McGill University, 1999

Diploma in Meteorology, McGill University, 1996

B.Sc. (Hons) Major: Physics, Minor: Mathematics, University of Guelph, 1995

Key publications

Shephard M.W., E. Mekis, R.J. Morris, Y. Feng, X. Zhang, K. Kilcup, and R. Fleetwood, Trends in Canadian Short Duration Extreme Precipitation: Including an IDF Perspective, submitted to Atmosphere-Ocean, 2014.

Cady-Pereira, K. E., S. Chaliyakunnel, M. W. Shephard, D. B. Millet, M. Luo, K.C. Wells, HCOOH Measurements from Space: TES Retrieval Algorithm and Observed Global Distribution, submitted to Atmos. Meas. Tech, 2014.

Barker, H.W., J.N.S. Cole, M.W. Shephard, Estimation of Errors associated with the EarthCARE 3D Scene Construction Algorithm, QJRMS, doi:10.1002/qj.2294, 2013.

Shephard M.W., R. Morris, W. R. Burrows, and L. Welsh, A High-ResolutionCanadian Lightning Climatology, Atmosphere-Ocean, 51:1, 50-59, doi:10.1080/07055900.2012.755946, 2013.

Cady-Pereira K.E., M. W. Shephard, D. Millet, M. Luo, K. Wells, Y. Xiao, V.H. Payne, and J. Worden, Measuring Methanol Globally from Space: TES Observations of the Seasonal and Spatial Variability of Methanol, Atmos. Chem. Phys., 12, 8189–8203, doi:10.5194/acp-12-8189-2012, 2012.

Shephard M.W., K. E. Cady-Pereira, M. Luo, D. K. Henze, R. W. Pinder, et. al., TES Ammonia Retrieval Strategy and Global Observations of the Spatial and Seasonal Variability of Ammonia, Atmos. Chem. Phys., 11, 10743-10763, doi:10.5194/acp-11-10743-2011, 2011.

Paixao E., H. Auld, M. Mirza, J. Klaassen, M. W. Shephard, Regionalization of heavy rainfalls to improve climatic design values for infrastructure: Case study in South-Central Ontario, Canada, Hydrological Sciences Journal, 56:7, 1067-1089, doi:10.1080/02626667.2011.608069, 2011.

Shephard M.W., S.A. Clough, V.H. Payne, W. L. Smith, S. Kireev, and K. E. Cady-Pereira, Performance of the line-by-line radiative transfer model (LBLRTM) for temperature and species retrievals: IASI case studies from JAIVEx, Atmos. Chem. Phys., 9, 7397-7417, 2009.

Payne, V. H., S. A. Clough, M. W. Shephard, R. Nassar, and J. A. Logan, Information-centered representation of retrievals with limited degrees of freedom for signal: Application to methane from the Tropospheric Emission Spectrometer, J Geophys Res., doi:10.1029/2008JD010155, 2009.

Shephard M.W., H. M. Worden, K. E. Cady-Pereira, et. al., Tropospheric Emission Spectrometer Spectral Radiance Comparisons, J Geophys Res., 113, D15S05, doi:10.1029/2007JD008856, 2008.

Beer, R., M. W. Shephard, S. S. Kulawik, S. A. Clough, A. Eldering, K. W. Bowman, et. al., First satellite observations of lower tropospheric ammonia & methanol, Geophysical Res. Letters, 35, L09801, doi:10.1029/2008GL033642, 2008.

Iacono M. J., J. S. Delamere, E. J. Mlawer, M. W. Shephard, S. A. Clough, and W. Collins, Radiative forcing by long-lived greenhouse gases: Calculations with the AER radiative transfer models, J. Geophys. Res., 113, D13103, doi:10.1029/2008JD009944, 2008.

Worden, J., D. Noone, K. Bowman, R. Beer, A. Eldering, B. Fisher, M. Gunson, A. Goldman, R. Herman, S. S. Kulawik, M. Lampel, G. Osterman, C. Rinsland, S. Sander, M.W. Shephard, C. Webster, and H. Worden. The global hydrologic cycle seen with water isotope measurements from space, Nature, 445, 528-532, 2007.

Clough S.A., Shephard M.W., Worden J., Brown P.D., Worden H.M., Luo M., Rodgers C.D., et. al., Forward Model and Jacobians for Tropospheric Emission Spectrometer Retrievals. IEEE Trans. Geosci. Remote Sens., 44, 1308-1323, 2006.

Bowman K, C.D. Rodgers, S. Sund-Kulawik, J. Worden, E. Sarkissian, G. Osterman, T. Steck, M. Luo, A. Eldering, M.W. Shephard, H. Worden, S.A. Clough, P.D. Brown, C.P. Rinsland, M. Lampe, M. Gunson, R. Beer, Tropospheric Emission Spectrometer: Retrieval Method and Error Analysis. IEEE Trans. Geosci. Remote Sens., 44, 1352-1358, 2006.

Clough S.A, Shephard M.W, Mlawer E.J, Delamere J.S, Iacono M.J, Cady-Pereira K.E, Boukabara S, Brown P.D. Atmospheric Radiative Transfer Modeling: a Summary of the AER Codes. J Quant Spectrosc Radiat Transfer, 91, 233-244, 2005.

Shephard M.W. and E.J. Kennelly. Effect of Band-to-Band Coregistration on Fire Retrievals. IEEE Trans. Geosci. Remote Sens., 41, pp. 2648-2661, 2003.