Atmospheric Chemistry and Composition Group
Prof. Mark A. Zondlo
Department of Civil and Environmental Engineering
Center for Mid-Infrared Technologies for Health and the Environment
Princeton University

Welcome to the Zondlo group website!

My group studies how human activities and natural systems impact the composition and chemistry of the atmosphere and the subsequent effects on air quality, climate, and ecosystem health. Measurements provide critical constraints on emission inventories and model output, and to this end, we develop and deploy novel sensors that provide observations at unprecedented scales in space and time. We also synthesize our field measurements with satellite products to bridge scales from hours to years and from neighborhoods to the globe. My group conducts the measurements as part of larger field studies and works closely with laboratory and modeling teams in these campaigns. Research foci include urban emissions of greenhouse gases and air pollutants, trace gases important to aerosol and cloud formation, and fluxes of nitrogen and carbon to/from the atmosphere in managed (agriculture) and natural systems. In short, the Earth’s atmosphere is our laboratory - it is complex, dynamic, and full of mysteries.

Recent News Follow Us On Twitter

May 8, 2019: Levi Golston awarded NASA Postdoctoral Fellowship

December 10, 2018: 'The Seasonal Rhythms of Ammonia' featured as NASA's Earth Observatory Image of the Day

October 23, 2018: Our Hawaii field campaign in response to the 2018 Kilauea eruption featured by SEAS

September 14, 2018: Mark Zondlo quoted in news feature about ammonia emissions in Science

December 14, 2017: Andlinger Center feature spotlight on Mark Zondlo


Earth's Last Frontier: The Atmosphere

Using Mid-Infrared Lasers:
MIRTHE Student Led Independent Project

Science at 47,000 feet: Laser hygrometer onboard the NSF Gulfstream-V research aircraft studying cloud formation.

Latest Field Campaigns

Duke Forest, 2017
Kellogg Biological Station, 2016 & 2017
Rocky Mountain National Park Study, 2015 & 2016
NOAA Marcellus (Pennsylvania), 2015 & 2016
ScaleX (Germany), 2016
NASA DISCOVER-AQ (Colorado), 2014
CARE-BEIJING-NCP (Beijing, China), 2014

Latest Publications

Importance of Super-Emitter Natural Gas Well Pads in the Marcellus Shale
D. Caulton et al., Environ. Sci. Technol., 2019.

A physics-based approach to oversample multi-satellite, multispecies observations to a common grid
K. Sun et al., Atmos. Meas. Tech., 2018.

Quantifying uncertainties from mobile-laboratory-derived emissions of well pads using inverse Gaussian methods
D. Caulton et al., Atmos. Chem. Phys., 2018.

Natural Gas Fugitive Leak Detection Using an Unmanned Aerial Vehicle: Localization and Quantification of Emission Rate
L. Golston et al., Atmos., 2018.

Modeling NH4NO3 over the San Joaquin Valley during the 2013 DISCOVER-AQ campaign
J. Kelly et al., J. Geophys. Res-Atmos., 2018.

Effluent Gas Flux Characterization during Pyrolysis of Chicken Manure
S. Clark et al., ACS Sustainable Chem. Eng., 2017.