Stephen Broccardo

Affiliation: NASA Postdoctoral Program Fellow

Branch: Atmospheric Science Branch (SGG)

Email: stephen.p.broccardo@nasa.gov

Professional Biography

Stephen Broccardo joined NASA Ames as a post-doctoral fellow in 2018, and participated in the ORACLES field mission based in Sao Tome as part of the 4STAR team. He leads development of the next generation mobile-platform sunphotometers including SeaSTAR, a ship-based sun photometer and sky polarimeter. He also leads a project to improve emissions monitoring from volcanic sources by better quantifying aerosol impacts on trace-gas emissions. 

Stephen graduated with BSc and MSc degrees in metallurgical engineering from the University of the Witwatersrand, before becoming involved in Earth science during the UAE2 campaign based in Abu Dhabi. He then embarked on a PhD, making airborne remote-sensing measurements of NO2 over the South African highveld. While working on this, he participated in airborne field measurement campaigns in South Africa, UAE, Australia and India. He joined three oceanographic research cruises from Cape Town to Antarctica, and served as Chief Scientist during two cruises to Gough Island in the South Atlantic. He graduated with a PhD in 2015, and joined North-West University (South Africa) as a post-doctoral fellow and made atmospheric observations during two research cruises from Walvis Bay, also participating in the AEROCLO-SA campaign based in Henties Bay, Namibia. 

Select Publications

Norgren et al, Above-aircraft cirrus cloud and aerosol optical depth from hyperspectral irradiances measured by a total-diffuse radiometer, Atmospheric Measurement Technology, 2021, https://doi.org/10.5194/amt-2021-269 

Y. Shinozuka et al, Aerosol optical depth above low-level clouds is similar to that in adjacent clear skies at the same heights: airborne observation above the southeast Atlantic, Atmospheric Chemistry and Physics, 2020, https://doi.org/10.5194/acp-20-11275-2020 

S.P. Broccardo et al: Intra-pixel variability in tropospheric NO₂ column densities derived from simultaneous spaceborne and airborne observations over the South African Highveld, Atmospheric Measurement Techniques, 2018, https://doi.org/10.5194/amt-11-2797-2018. 

P. Formenti et al: Three years of measurements of light-absorbing aerosols over coastal Namibia: seasonality, origin, and transport, Atmospheric Chemistry and Physics, 2018, https://doi.org/10.5194/acp-18-17003-2018. 

K. Kaku, J.S. Reid, E.A. Reid, K. Ross-Langerman, S. Piketh, S. Cliff, A. Al Mandoos, S. Broccardo, Y. Zhao, J. Zhang, K.D. Perry : Investigation of the relative fine and coarse mode aerosol loadings and properties in the Southern Arabian Gulf region, Atmospheric Research, 169(A), 2016, DOI:10.1016/ j.atmosres.2015.09.029 

C. Tomasi et al: Aerosol remote sensing in polar regions, Earth Science Reviews, 140, pp 108-157, 2015, https://doi.org/10.1016/j.earscirev.2014.11.001. 

K.-P. Heue, T. Wagner, S.P. Broccardo, D. Walter, S.J. Piketh, K.E. Ross, S. Beirle, U. Platt: Direct observation of two dimensional trace gas distributions with an airborne imaging DOAS instrument. Atmospheric Chemistry and Physics, 8, pp 6707-6717, 2008, doi:10.5194/acp-8-6707-2008 

Conferences: 

S. Broccardo, S. Piketh, G. Feig, Ship-based black carbon measurements over the South Atlantic and Southern Ocean, in American Geophysical Union Fall Meeting, San Francisco CA, 2019 

R. Johnson, S. Broccardo, S. Muvva, C. Chang, The Seagoing sky-scanning sun tracking atmospheric research radiometer: automated sunphotometry from ships, in American Geophysical Union Fall Meeting, San Francisco CA, 2019 

S. LeBlanc, J. Redemann, C. Flynn, K. Pistone, M. Segal-Rosenheimer, M. Kacenelenbogen, Y. Shinozuka, S. Broccardo, K.S. Schmidt, S. Cochrane, H. Chen, R. Ferrare, S. Burton, C. Hostetler, J.W. Hair, Aerosol above cloud, optical depth and direct radiative effect in the South East Atlantic, in American Geophysical Union Fall Meeting, San Francisco CA, 2019 

S. Broccardo, R. Johnson, S. Muvva, R. Dahlgren, C. Chang, Unicorns to Workhorses: Bringing Routine Sunphotometry to the Oceans, in 38th International Symposium on Remote Sensing of the Environment, Baltimore MD, 2019 

S. Broccardo, S. LeBlanc, S. Dunagan, C. Flynn, K. Pistone, J. Redemann, M. Segal-Rosenheimer, M. Kacenelenbogen, NASA’s next-generation airborne sunphotometer (5STAR): science drivers and requirements, in Optical Society of America Optical Sensors and Sensing Congress, San Jose CA, 2019 

R.P. Dahlgren, S.E. Dunagan, R. Johnson, S. Broccardo, A. Tayeb, C. Esch, NASA’s next generation airborne sunphotometer (5STAR): engineering challenges and advances, in Optical Society of America Optical Sensors and Sensing Congress, San Jose CA, 2019 

S. LeBlanc et al, Airborne observations of above-cloud aerosol optical depth in the South East Atlantic during biomass burning season over 3 years, in European Geophysical Union General Assembly, Vienna Austria, 2019. 

S. LeBlanc, J. Redemann, C. Flynn, K. Pistone, M. Segal-Rosenheimer, M. Kacenelenbogen, Y. Shinozuka, S. Broccardo, K. S. Schmidt, S. Cochrane, H. Chen, K. Meyer, R. Ferrare, S. Burton, C. Hostetler, J.W. Hair, Above-cloud aerosol optical properties in the South East Atlantic from airborne observations during ORACLES, in American Geophysical Union Fall Meeting, Washington DC, 2018 

A. Smirnov, B.N. Holben, S. Kinne, T. Zielinski, G. Stenchikov, T. Smyth, V.F. Radionov, G. Zibordi, S.M. Sakerin, N. Nelson, E. Boss, M. Ondrusek, E. Lobecker, V. Slabakova, M. Harvey, R. Frouin, S. Broccardo, I. Slutsker, D.M. Giles, N.T. O’Neill, and T.F. Eck, Maritime Aerosol Network as a component of AERONET – current status and future challenges, in Ocean Optics XXIV, Dubrovnik Croatia, October 7-12, 2018 

F. Burnet et al, Fog microphysics measurements during the Aerosols, Radiation and Clouds in southern Africa (AEROCLO-sA) field campaign in Henties Bay, Namibia, in European Geophysical Union General Assembly, Vienna Austria, 2018 

 S.P. Broccardo, K.-P. Heue, A. Kokhanovsky, S. Piketh, U. Platt: Remote Sensing of NO₂ Over the Highveld: Comparing Aircraft and Satellite Platforms, in 37th International Symposium on Remote Sensing of Environment, Tshwane, 2017 

A. Smirnov et al: Maritime Aerosol Network (MAN) as a component of Aerosol Robotic Network (AERONET) recent developments and achievements, in European Aerosol Conference, Milan, 2015 

S.P. Broccardo, K.-P. Heue, D. Walter, S. Beirle, F. Boersma, A. Richter, C. Meyer, T. Elias, S.J. Piketh, U. Platt: Comparison of satellite NO₂ measurements with combined airborne DOAS and in-situ measurements, in Fifth international DOAS workshop, Mainz, 2011 

S.P. Broccardo, K.-P. Heue, S.J. Piketh, U. Platt: Airborne DOAS in South Africa: escaping flatland, in AGU 2010 Fall Meeting, San Francisco, 2010 

S.P. Broccardo, S.J. Piketh, K.-P. Heue, U. Platt: Airborne Imaging Differential Optical Absorption Spectroscopy, trace-gas measurements from the suburbs to the sub-continent, in IEEE International Geoscience and Remote Sensing Symposium, Cape Town, 2009 

S.P. Broccardo, K.-P. Heue, D. Walter, A. Moatshe, S.J. Piketh, U. Platt: NO₂ remote sensing from the suburbs to the sub-continent, in 2008 South African Society for Atmospheric Science Conference, Pretoria, 2008  

S.P. Broccardo, K.-P. Heue, D. Walter, K.E. Ross, S.J. Piketh, U. Platt: Airborne Imaging DOAS: a bridge from satellite to in-stack measurements, in 10th International Global Atmospheric Chemistry Conference, Annecy, 2008 

K.-P. Heue, T. Wagner, S. Broccardo, S.J. Piketh, K.E. Ross, U. Platt: Direct observation of two-dimensional trace-gas distributions with an airborne imaging DOAS instrument, in 18th ESA Symposium on European Rocket and Balloon Programmes and Related Research, Visby Sweden, 2007 

S.P. Broccardo, K.-P. Heue, K.E Ross, S.J. Piketh, U. Platt: Airborne Imaging DOAS, results from the South African Highveld, in 10th International Conference on Atmospheric Science and Applications to Air Quality, Hong Kong, 2007 

M. Sephton, S. Broccardo,  S. Luyckx: The Effect of Vanadium Carbide (VC)  Additions on the Corrosion of WC-Co. In 15th International Corrosion Conference, Granada, 2002. 

J. Zinyana, S. Broccardo, S. Hamar-Thibault, L.A. Cornish, M.J. Whitcomb, C.H. Allibert, and S. Luyckx: Effect of Composition on the (V,W)C Constitution in V-W-C-Co Alloys. In 15th International Plansee Seminar, 2001.