Dr. Norman O’Neill

Dr. Norman O’Neill


Dr. Norman O’Neill is a Professor at Université de Sherbrooke. Dr. O’Neill is an expert in aerosol RS and was a co-founder of the AEROCAN (ECCC) sunphotometer / sky radiometer network as well as a small network of starphotometers (including the Eureka starphotometer). He has a keen interest in the physio-optical interpretation of the degree of event-based coherence between surface-based aerosol measurements, lidar backscatter and depolarization profiles and AERONET retrievals (AERONET retrievals both at the extinction-measurement retrieval level for event-based analysis at the ~ minutes and the combined extinction and sky radiance retrieval level at the climatological scale with frequency bins ~ months). His spectral deconvolution algorithm (SDA) extinction-measurement retrieval for the extraction of fine and coarse mode aerosol optical depth is a standard product of the world-wide AERONET network.


Dr Norman O’Neill est professeur à l’Université de Sherbrooke. Dr O’Neill est un expert de l’aérosol RS et a été co-fondateur du réseau de photocamètres/ radiomètres célestes AEROCAN (ECCC) ainsi que d’un petit réseau de starphotomètres (y compris le starphotomètre Eureka). Il s’intéresse particulièrement à l’interprétation physio-optique du degré de cohérence événementielle entre les mesures d’aérosols surfaciques, les profils de lidar rétrodiffusion et de dépolarisation et les extractions AERONET (extractions AERONET au niveau de la recherche extinction-mesure pour l’analyse événementielle) au niveau des minutes et du niveau combiné d’extinction et de récupération de radiance à l’échelle climatologique avec des intervalles de fréquence ~ mois). Son algorithme de déconvolution spectrale (SDA) permet de récupérer des mesures d’extinction pour l’extraction de la profondeur optique des aérosols en mode fin et grossier. Ce produit est un produit standard du réseau mondial AERONET.

Selected Publications/ Publications sélectionnées

Comparisons of a Chemical Transport Model with a Four-Year (April to September) Analysis of Fine- and Coarse-Mode Aerosol Optical Depth Retrievals Over the Canadian Arctic
Hesaraki S, NT O’Neill, G Lesins, A Saha, RV Martin, VE Fioletov, K Baibakov, & I Abboud
Atmosphere-Ocean 55(4-5):213-229 (Aug 2017)
DOI: 10.1080/07055900.2017.1356263

Temporal and spectral cloud screening of polar winter aerosol optical depth (AOD): impact of homogeneous and inhomogeneous clouds and crystal layers on climatological-scale AODs
O’Neill NT, K Baibakov, S Hesaraki, L Ivanescu, RV Martin, C Perro, JP Chaubey, A Herber, & TJ Duck
Atmospheric Chemistry & Physics 16(19):12753-12765 (Oct 2016)

Synchronous polar winter starphotometry and lidar measurements at a High Arctic station
Baibakov K, NT O’Neill, L Ivanescu, TJ Duck, C Perro, A Herber, KH Schulz,
& O Schrems
Atmospheric Measurement Techniques 8(9): 3789-3809 (2015)

Properties of Sarychev sulphate aerosols over the Arctic
O’Neill NT, C Perro, A Saha, G Lesins, TJ Duck, E Eloranta, GJ Nott, A Hoffman, ML Karumudi, C Ritter, A Bourassa, I Aboud, SA Carn, & V Savastiouk
Journal of Geophysical Research: Atmospheres 117(D4): D04203 (2011)

Pan‐Arctic sunphotometry during the ARCTAS‐A campaign of April 2008
Saha A, NT O’Neill, E Eloranta, RS Stone, TF Eck, S Zidane, D Daou, A Lupu, G Lesins, M Shiobara, & LJB McArthur
Geophysical Research Letters 37(5):L05803 (Mar 2010)

Occurrence of weak, sub-micron, tropospheric aerosol events at high Arctic latitudes
O’Neill NT, O Pancrati, K Baibakov, E Eloranta, RL Batchelor, J Freemantle, LJB McArthur, K Strong, & R Lindenmaier
Geophysical Research Letters 35(14):L14814 (Jul 2008)

Coarse mode optical information retrievable using ultraviolet to short‐wave infrared Sun photometry: Application to United Arab Emirates Unified Aerosol Experiment data
O’Neill NT, TF Eck, JS Reid, A Smirnov, & O Pancrati
Journal of Geophysical Research: Atmospheres 113(D5): D05212 (Mar 2008)

Robust optical features of fine mode size distributions: Application to the Québec smoke event of 2002
O’Neill NT, S Thulasiraman, TF Eck, & JS Reid
Journal of Geophysical Research: Atmospheres 110(D11): D11207 (June 2005)

Spectral discrimination of coarse and fine mode optical depth
O’Neill NT, TF Eck, A Smirnov, BN Holben, & S Thulasiraman
Journal of Geophysical Research: Atmospheres 108(D17)4559-4573 (Sept 2003)
DOI: 10.1029/2002JD002975

Bimodal size distribution influences on the variation of Angstrom derivatives in spectral and optical depth space
O’Neill NT, TF Eck, BN Holben, A Smirnov, & O Dubovik
Journal of Geophysical Research 106(D9):9787-9806 (May 2001)

The lognormal distribution as a reference for reporting aerosol optical depth statistics; Empirical tests using multi‐year, multi‐site AERONET Sunphotometer data
O’Neill NT, A Ignatov, BN Holben, & TF Eck
Geophysical Research Letters 27(20):3333-3336 (Oct 2000)

Wavelength dependence of the optical depth of biomass burning, urban, and desert dust aerosols
Eck TF, BN Holben, JS Reid, O Dubovik, A Smirnov, NT O’Neill, I Slutsker, & S Kinne
Journal of Geophysical Research 104(D24):31333-31349 (Dec 1999)