Reem Hannun

Affiliation: NASA Ames Research Center

Branch: Atmospheric Science Branch (SGG)

Email: reem.a.hannun@nasa.gov

Professional Biography

Dr. Reem Hannun is an experimental atmospheric chemist within the Atmospheric Science Branch at NASA Ames. Her work broadly focuses on using measurement-based approaches to understand the sources, transformations, and fates of trace gases in the atmosphere that are relevant to air quality and climate. She is particularly interested in research questions that integrate atmospheric chemistry with the greater Earth system, such as biosphere-atmosphere exchange processes (like uptake and emissions by soils and vegetation) and the role they play in mediating atmospheric gases, including carbon dioxide, methane, and ozone.

Prior to joining Ames, Dr. Hannun worked as a postdoc in the In Situ Observations Lab at NASA Goddard Spaceflight Center, where she helped develop a high-precision ozone sensor, the Rapid Ozone Experiment (ROZE). She subsequently joined the University of Pittsburgh as research faculty. Throughout her career, Dr. Hannun has participated in several NASA sponsored aircraft based field campaigns, including SEAC4RS, CARAFE, ATom, FIREX-AQ, DCOTSS, BlueFlux, and ASIA-AQ.

Education

Ph.D. Chemistry, Harvard University

B.A. Chemistry, Dartmouth College

Research Interests

Atmospheric Chemistry and Composition, Trace Gas Measurements, Biosphere-Atmosphere Fluxes of Trace Gases, Carbon Cycle, Ozone Impacts on Ecosystems

Select Publications

Sebol, A. E., Canty, T. P., Wolfe, G. M., Hannun, R., Ring, A. M., & Ren, X. (2024). Exploring ozone production sensitivity to NOx and VOCs in the New York City airshed in the spring and summers of 2017–2019. Atmospheric Environment, 324, 120417. https://doi.org/10.1016/j.atmosenv.2024.120417

Poulter, B., Adams-Metayer, F. M., Amaral, C., Barenblitt, A., Campbell, A., Charles, S. P., Roman-Cuesta, R. M., D’Ascanio, R., Delaria, E. R., Doughty, C., Fatoyinbo, T., Gewirtzman, J., Hanisco, T. F., Hull, M., Kawa, S. R., Hannun, R., Lagomasino, D., Lait, L., Malone, S. L., … Zhang, Z. (2023). Multi-scale observations of mangrove blue carbon ecosystem fluxes: The NASA Carbon Monitoring System BlueFlux field campaign. Environmental Research Letters, 18(7), 075009. https://doi.org/10.1088/1748-9326/acdae6

Liao, J., Wolfe, G. M., Hannun, R. A., St. Clair, J. M., Hanisco, T. F., Gilman, J. B., Lamplugh, A., Selimovic, V., Diskin, G. S., Nowak, J. B., Halliday, H. S., DiGangi, J. P., Hall, S. R., Ullmann, K., Holmes, C. D., Fite, C. H., Agastra, A., Ryerson, T. B., Peischl, J., … Neuman, J. A. (2021). Formaldehyde evolution in US wildfire plumes during the Fire Influence on Regional to Global Environments and Air Quality experiment (FIREX-AQ). Atmospheric Chemistry and Physics, 21(24), 18319–18331. https://doi.org/10.5194/acp-21-18319-2021

Hannun, R. A., Swanson, A. K., Bailey, S. A., Hanisco, T. F., Bui, T. P., Bourgeois, I., Peischl, J., & Ryerson, T. B. (2020). A cavity-enhanced ultraviolet absorption instrument for high-precision, fast-time-response ozone measurements. Atmospheric Measurement Techniques, 13(12), 6877–6887. https://doi.org/10.5194/amt-13-6877-2020

Hannun, R. A., Wolfe, G. M., Kawa, S. R., Hanisco, T. F., Newman, P. A., Alfieri, J. G., Barrick, J., Clark, K. L., DiGangi, J. P., Diskin, G. S., King, J., Kustas, W. P., Mitra, B., Noormets, A., Nowak, J. B., Thornhill, K. L., & Vargas, R. (2020). Spatial heterogeneity in CO₂, CH₄, and energy fluxes: insights from airborne eddy covariance measurements over the Mid-Atlantic region. Environmental Research Letters, 15(3), 035008. https://doi.org/10.1088/1748-9326/ab7391

Wolfe, G. M., Kawa, S. R., Hanisco, T. F., Hannun, R. A., Newman, P. A., Swanson, A., Bailey, S., Barrick, J., Thornhill, K. L., Diskin, G., DiGangi, J., Nowak, J. B., Sorenson, C., Bland, G., Yungel, J. K., & Swenson, C. A. (2018). The NASA Carbon Airborne Flux Experiment (CARAFE): instrumentation and methodology. Atmospheric Measurement Techniques, 11(3), 1757–1776. https://doi.org/10.5194/amt-11-1757-2018

Press Releases/Wesbites

https://science.gsfc.nasa.gov/600/ECSS/Reem-Hannun.html

https://science.nasa.gov/people/reem-hannun/

https://phys.org/news/2019-04-nasa-instrument-accurately-ozone-accident.html

Dr. Reem Hannun is also an atmospheric chemist ⚗. She uses lasers onboard #NASA_ATom to measure 📏 the chemical formaldehyde. Her work helps identify humans’ influence even high up in the atmosphere and far away from populated areas. #InternationalWomensDay pic.twitter.com/47JNs7TKpI

— NASA Earth (@NASAEarth) March 8, 2019