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

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

May 23, 2017: Xuehui Guo awarded NASA Earth and Space Science Fellowship

March 31, 2017: Vehicular ammonia study featured on the Princeton Home Page

June 22, 2016: Da Pan awarded PEI-STEP Fellowship

November 2015: Research featured in Optics and Photonics News: Air-Quality Monitoring in the Mid-Infrared


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
EDF Barnett Coordinated Campaign (Texas), 2013

Latest Publications

Effluent Gas Flux Characterization during Pyrolysis of Chicken Manure
S. Clark et al., ACS Sustainable Chem. Eng., DOI:10.1021/acssuschemeng.7b00815, 2017.

Lightweight mid-infrared methane sensor for unmanned aerial systems
L. Golston et al., Appl. Phys. B, DOI:10.1007/s00340-017-6735-6, 2017.

Dynamical conditions of ice supersaturation and ice nucleation in convective systems: A comparative analysis between in situ aircraft observations and WRF simulations
J. D'Alessandro et al., J. Geophys. Res-Atmos., DOI:10.1002/2016JD025994, 2017.

Vehicle Emissions as an Important Urban Ammonia Source in the United States and China
K. Sun et al., Environ. Sci. Technol., DOI:10.1021/acs.est.6b02805, 2017.

Long-Path Quantum Cascade Laser–Based Sensor for Methane Measurements
A. Michel et al., J. Atmos. Oceanic Technol., DOI:10.1175/JTECH-D-16-0024.1, 2016.

An assessment of the radiative effects of ice supersaturation based on in situ observations
X. Tan et al., Geophys. Res. Lett., DOI:10.1002/2016GL071144, 2016.