I am a Ph.D. student in the Science, Technology and Environmental Policy (STEP) program at the Woodrow Wilson School of Public Policy and International Affairs at Princeton University. I work with Professor Denise L. Mauzerall and Dr. Tim D. Searchinger, and am passionate about providing technological and policy solutions to a food future with sustainable nitrogen use.
Nitrogen is a critical nutrient for plant growth and has saved the world from hunger. Yet currently, humans have used too much nitrogen. Excess nitrogen has caused air pollution, soil acidification, eutrophication and fish kills, and climate warming.
My dissertation focuses on addressing the N use challenge with a focus on China. China has one of the most serious issues of N fertilizer overuse and poor manure handing in the world. My work investigates agricultural air and water quality impacts, identifies mitigation technologies, and provides policy recommendations that help facilitate ag-technology transfer. I combine the use of air quality modeling tools such as Weather Research and Forecasting model - Chemistry, agricultural development pathways, and qualitative methods such as case studies and interviews.
I am also interested in the essential role of the agriculture sector in pro-poor growth and the interaction between science and policy.
I received a BS in atmospheric and oceanic sciences in the School of Physics at Peking University. I have worked as a volunteer for the Nature Conservancy, Beijing Office on climate change adaptation and as a short-term consultant for the World Bank on China’s nitrogen use.
Long-Lived Species Enhance Summertime Attribution of North American Ozone to Upwind Sources
Yixin Guo, Junfeng Liu, Denise L. Mauzerall, Xiaoyuan Li, Larry W. Horowitz, Wei Tao, and Shu Tao, Environmental Science & Technology, 2017, 51, (9), 5017-5025 DOI: 10.1021/acs.est.6b05664