Christopher Sioris, Ph.D.

Physical Scientist - remote sensing of atmospheric composition

Current research and/or projects

Use of remotely-sensed data to improve our understanding of the abundances and spatiotemporal variations of key pollutants, such as aerosols and nitrogen dioxide.

1) comparisons between aerosol depth depth observed by satellites and ground-based instruments

2) studying the ability of satellites to capture variability in surface-level PM2.5 (fine particular matter)

3) developing new techniques for remote sensing of aerosol information from an airborne platform

Professional activities / interests

Co-Investigator: Observations of Earth's surface and aerosol with a balloon-borne imaging Fabry-Perot spectrometer

Atmospheric Chemistry Experiment science team member

Odin satellite aeronomy science team member

Education and awards

B. Sc. (Hons.) Environmental Science, Carleton University, 1997

Ph. D. Earth and Space Science, York University, 2001

Key publications

Sioris, C.E., C.D. Boone, P.F. Bernath, J. Zou, C.T. McElroy, C.A. McLinden. 2010. ACE observations of aerosol in the upper troposphere and lower stratosphere from the Kasatochi volcanic eruption, J. Geophys. Res. 115: D00L14, doi:10.1029/2009JD013469.



Sioris, C.E., C.A. McLinden, R.V. Martin, B. Sauvage, C.S. Haley, N.D. Lloyd, E.J. Llewellyn, P.F. Bernath, C.D. Boone, S. Brohede, and C.T. McElroy. 2007. Vertical profiles of lightning-produced NO2 enhancements in the upper troposphere observed by OSIRIS, Atmos. Chem. Phys. 7: 4281-4294.




Sioris, C.E., T.P. Kurosu, R.V. Martin, and K. Chance. 2004. Stratospheric and tropospheric NO2 observed by SCIAMACHY: First results. Adv. Space Res. 34: 780-785.


Sioris, C.E., W.F.J. Evans, R.L. Gattinger, I.C. McDade, D. Degenstein, and E.J. Llewellyn. 2002. Ground-based Ring effect measurements with the OSIRIS development model. Can. J. Phys. 80: 483-491.   


Sioris, C.E. and W.F.J. Evans. 2000. Impact of rotational Raman scattering in the O2 A band. Geophys. Res. Lett. 27: 4085-4088.