Dr Eloïse Marais PhD

Dr Eloïse Marais

Birmingham Fellow

Contact details

School of Geography, Earth and Environmental Sciences
University of Birmingham
B15 2TT

Eloise uses complex models and large datasets to understand atmospheric composition and address issues of pressing societal need. Specific tools used in her research include the global 3D GEOS-Chem chemical transport model, and satellite, surface, and aircraft observations.


  • PhD, Earth and Planetary Sciences, Harvard University (2014)
  • MSc, Chemistry, Rhodes University, South Africa (2008)
  • BSc, Hons, Chemistry, University of KwaZulu-Natal, South Africa (2004)
  • BSc, Chemistry and Chemical Technology, University of Natal, South Africa (2003)


Eloise Marais received a Fulbright Science and Technology Award to pursue a PhD in Daniel Jacob’s Atmospheric Chemistry Modeling Group at Harvard University. There she made substantial contributions to understanding pollution sources, atmospheric composition, and air quality in Africa using satellite observations and the GEOS-Chem model. After completing her PhD she was awarded a South African National Science Foundation Fellowship for study abroad and a Schlumberger Faculty for the Future Fellowship to continue her postdoctoral research in the Daniel Jacob’s group. During her postdoc at Harvard she coordinated the weekly Atmospheric Sciences seminar, and provided graduate students and postdocs with career advice and academic job application training. She was also invited to present her research at prestigious academic and research institutes including the National Center for Atmospheric Research, Georgia Institute of Technology, and MIT.

Postgraduate supervision

Please contact Eloise Marais if you are interested in conducting research in her group.


ORCID: 0000-0001-5477-8051

Research interests

  • Air quality in Africa
  • Biogenic organic aerosol formation, processing, and fate
  • Temporal and spatial variability of trace gases and aerosols from open fires in Africa
  • Factors controlling upper troposphere reactive nitrogen oxides

Other activities

  • Lecturer, Committee on Space Research (COSPAR) Capacity Building Workshop, Kumasi, Ghana (committed, June 2017).
  • Contributing Author on Air Quality in Tropical and Subtropical Megacities, Submitted to 2017-2027 USA National Research Council Decadal Survey for Earth Observations from Space Request for Information (RFI-2), 2016.
  • Frequent reviewer for funding agencies and scientific journals. 



Horowitz, H. M. et al. including E. A. Marais, A new mechanism for atmospheric mercury redox chemistry: implications for the global mercury budget, Atmos. Chem. Phys., 17, 6353-6371, doi:10.5194/acp-17-6353-2017, http://www.atmos-chem-phys.net/17/6353/2017/acp-17-6353-2017.html

Lacey, F. G., E. A. Marais et al., Improving present day and future estimates of anthropogenic sectoral emissions and the resulting air quality impacts in Africa, Faraday Discuss., doi:10.1039/c7fd00011a, 2017, http://pubs.rsc.org/en/content/articlepdf/2017/fd/c7fd00011a

Zhu, L. et al. including E. A. Marais, Long-term (2005-2014) trends in formaldehyde (HCHO) columns across North America as seen by the OMI satellite instrument: Evidence of changing emissions of volatile organic compounds, accepted, Geophys. Res. Lett., 2017. 

Cady-Pereira, K. E. et al. including E. A. Marais, Seasonal and spatial changes in trace gases over megacities from Aura TES observations, Atmos. Chem. Phys., in review, doi:10.5194/acp-2017-110, 2017, http://www.atmos-chem-phys-discuss.net/acp-2017-110/

Li, C. et al. including E. A. Marais, Trends in chemical composition of global and regional population-weighted fine particulate matter over the recent 25 years, submitted, Environ. Sci. Technol., 2017.

Marais, E. A., D. J. Jacob et al., Evidence of 1991-2013 decrease of biogenic secondary organic aerosol in response to SO2 emission controls, Environ. Res. Lett., 12 054018, doi:10.1088/1748-9326/aa69c8, 2017, http://iopscience.iop.org/article/10.1088/1748-9326/aa69c8/meta

Chan Miller, C., D. Jacob, E. A. Marais et al., Glyoxal yield from isoprene oxidation and relation to formaldehyde: chemical mechanism, constraints from SENEX aircraft observations, and interpretation of OMI satellite data, accepted, Atmos. Chem. Phys., 2017. 


Marais, E. A., C. Wiedinmyer, Air quality impact of Diffuse and Inefficient Combustion Emissions in Africa (DICE-Africa), Environ. Sci. Technol., 50, 10739-10745, 2016, http://pubs.acs.org/doi/abs/10.1021/acs.est.6b02602

Silvern, R. F., D. J. Jacob et al. including E. A. Marais, Incomplete sulfate aerosol neutralization despite excess ammonia in the eastern US: a possible role of organic aerosol, in review, Atmos. Chem. Phys Discuss., http://www.atmos-chem-phys-discuss.net/acp-2016-315/

Fisher, J. A., D. J. Jacob et al. including E. A. Marais, Organic nitrogen chemistry and its implications for nitrogen budgets in an isoprene- and monoterpene-rich atmosphere: constraints from aircraft (SEAC4RS) and ground-based (SOAS) observations in the southeast US, accepted, Atmos. Chem. Phys., 16, 5969-5991, 2016, http://www.atmos-chem-phys.net/16/5969/2016/

Travis, K. R., D. J. Jacob et al. including E. A. Marais, Why do models overestimate surface ozone in the Souhteastern United States?, Atmos. Chem. Phys., 16, 13561-13577, 2016, http://www.atmos-chem-phys.net/16/13561/2016/. 

Marais, E. A., D. J. Jacob, J. L. Jimenez, P. Campuzano-Jost, D. A. Day, W. Hu, J. Krechmer, L. Zhu, P. S. Kim, C. C. Miller, J. A. Fisher, K. Travis, K. Yu, T. F. Hanisco, G. M. Wolfe, H. L. Arkinson, H. O. T. Pye, K. D. Froyd, J. Liao, V. F. McNeill, Aqueous-phase mechanism for secondary organic aerosol formation from isoprene: application to the southeast United States and co-benefit of SO2 emission controls, Atmos. Chem. Phys., 16, 1603-1618, 2016, http://www.atmos-chem-phys.net/16/1603/2016/

Franco, B., E. A. Marais, B. Bovy et al., Diurnal cycle and multi-decadal trend of formaldehyde in the remote atmosphere near 46°N, Atmos. Chem. Phys., 16, 4171-4189, 2016, http://www.atmos-chem-phys.net/16/4171/2016/.  

Yu, K., D. J. Jacob et al., including E. A. Marais, Sensitivity to grid resolution in the ability of a chemical transport model to simulate observed oxidant chemistry under high-isoprene conditions, Atmos. Chem. Phys., 16, 4369-4378 2016, http://www.atmos-chem-phys.net/16/4369/2016/. 


Marais, E. A., K. Chance, A geostationary air quality monitoring platform for Africa, The Clean Air Journal, 25, 40-45, 2015, http://www.cleanairjournal.org.za/download/caj_vol25_no1_2015_p40.pdf

Franco, B., F. Hendrick et al. including E. A. Marais, Retrievals of formaldehyde from ground-based FTIR and MAX-DOAS observations at the Jungfraujoch station and comparisons with GEOS-Chem and IMAGES model simulations, Atmos. Meas. Tech., 8, 1733-1756, 2015, http://www.atmos-meas-tech.net/8/1733/2015/amt-8-1733-2015.html. 


Marais, E. A., D. J. Jacob, K. Wecht, C. Lerot, L. Zhang, K. Yu, T. P. Kurosu, K. Chance, B. Sauvage, Anthropogenic emissions in Nigeria and implications for ozone air quality: a view from space, Atmos. Environ., 99, 32-40, 2014, http://www.sciencedirect.com/science/article/pii/S1352231014007481.

Zhu, L., D. J. Jacob, et al. including E. A. Marais, Anthropogenic emissions of highly reactive volatile organic compounds in eastern Texas inferred from oversampling of satellite (OMI) measurements of HCHO columns, Environ. Res. Lett., 9, 114004, 2014, http://iopscience.iop.org/article/10.1088/1748-9326/9/11/114004

Nowlan, C. R., R. V. Martin et al. including E. A. Marais, Global dry deposition of nitrogen dioxide and sulfur dioxide inferred from space-based measurements, Global Biogeochem. Cy., 10, 1025-1043, 2014, http://onlinelibrary.wiley.com/doi/10.1002/2014GB004805/abstract 

Marais, E. A., D. J. Jacob, A. Guenther, K. Chance, T. P. Kurosu, J. G. Murphy, C. E. Reeves, H. O. T. Pye, Improved model of isoprene emissions in Africa using OMI satellite observations of formaldehyde: implications for oxidants and particulate matter, Atmos. Chem. Phys., 14, 7693-7703, 2014, http://www.atmos-chem-phys.net/14/7693/2014/

Wang, Q., D. J. Jacob et al. including E. A. Marais, Global budget and radiative forcing of black carbon aerosol: constraints from pole-to-pole (HIPPO) observations across the Pacific, J. Geophys. Res., 119, 195-206, 2014, http://onlinelibrary.wiley.com/doi/10.1002/2013JD020824/abstract


Barkley, M. B., I. De Smedt et al. including E. A. Marais, Top-down isoprene emissions over tropical South America inferred from SCIAMACHY and OMI formaldehyde columns, J. Geophys. Res., 118, 6489-6868, 2013, http://onlinelibrary.wiley.com/doi/10.1002/jgrd.50552/abstract. 


Marais, E. A., D. J. Jacob, T. P. Kurosu, K. Chance, J. G. Murphy, C. Reeves, G. Mills, S. Casadio, D. B. Millet, M. P. Barkley, F. Paulot, J. Mao, Isoprene emissions in Africa inferred from OMI observations of formaldehyde columns, Atmos. Chem. Phys., 12, 6219-6235, 2012, http://www.atmos-chem-phys.net/12/6219/2012/.