Sarah Safieddine

Postdoctoral Associate

Atmospheric Chemistry and Composition Modeling
Department of Civil and Environmental Engineering
Massachusetts Institute of Technology
Cambridge, MA 02139

Current Research

The Reactive Organic Carbon Budget: a Modeling Perspective

Non-methane Volatile Organic Compounds Emissions

The animation on the left shows the total emissions of different non-methane volatile organic compounds (NMVOCs): from trees and vegetation, human activity, fires and the oceans.

Global Reactive Organic Carbon (ROC)

After being emitted, NMVOCs will oxidize, react with one another or partition into the aerosol phase; they will photolyze, be transported and deposited. The figure on the left shows the total reactive organic carbon (ROC) concentrations, which is the sum of NMVOCs and organic aerosol (both primary and secondary), as simulated by the chemistry transport model GEOS-Chem.

My work consists of constructing the global budget of the reactive organic carbon: its sources, sinks, atmospheric burden and subsequent effect on OH reactivity and ozone.


2015     Ph.D., Environmental Sciences, Université Pierre et Marie Curie (Paris VI), France.

2011     M.S., Physics, American University of Beirut, Beirut, Lebanon.

2008     B.S., Physics, American University of Beirut, Beirut, Lebanon.

Research News and Outreach

Here are some videos and news updates about my current and previous research.

Clearing the Air on Ozone Pollution

Want to know more about ozone sources and effects? Here's our group's submission for the MIT Civil and Environmental Engineering video competition.

What do I do at MIT?

As part of making our research accessible to all, here's an interview where I talk about my research work at MIT.

Summertime Tropospheric Ozone in the Mediterranean

Why do we have such high tropospheric ozone values over the Mediterranean in summer? Satellite and model data reveal a combination of causes that you can know more about in this press release.


Peer-reviewed Publications