We analyze atmospheric compositions from air samples collected globally from aircraft operating at ~10-15km heights over multiple years. These compositions are significant to air quality and climate. We also use the relationships between atmospheric compositions to infer atmospheric radicals (hydroxyl and chlorine) which are important for the troposphere and stratosphere. 

Our work has been published in Nature npj Climate and Atmospheric Science, Geophysical Research Letters,  Earth System Science Data, and Atmospheric Measurement Techniques.

In this project (ICHEAR), we investigated the emissions and chemistry of gases and aerosols emitted from humans in various indoor environmental conditions. Some of the exciting results include (1) discovery of oxidation field around the human body (published in Science); (2) strong relationships between ammonia emissions from humans and temperature and skin exposure (published in Environmental Science & Technology); (3) contribution of CO2 and CH4 from human metabolism to global carbon budget (published in Science of The Total Environment); (4) ozone-initiated aerosol formation and gas-phase chemistry (multiple publications in Environmental Science & Technology, see Zannoni et al., 2021, Yang et al., 2021, Wang et al., 2020). 

Another field study examined the source apportionment and ozone formation potential from 70 atmospheric volatile organic compounds in two urban cities and one nature reserve in China (published in Science of The Total Environment).