Alex B Guenther
· ProfessorUniversity of California, Irvine · Earth System Science
Active 1987–2026
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About
Alex B Guenther is an Associate Professor at UC Irvine, where he has been serving since 2018. He previously held the position of Assistant Professor at UC Irvine from 2012 to 2018. His academic background includes a Ph.D. from Georgia Institute of Technology, where his advisor was L. Gregory Huey, obtained in 2007. He also holds M.S. and B.S. degrees from Seoul National University, completed in 2000 and 1998 respectively. His research focuses on biosphere-atmosphere interactions, contributing to understanding the complex processes that govern atmospheric chemistry and climate. Guenther's work involves leading a team of graduate students and researchers, engaging in field campaigns, projects, and teaching activities related to earth system science. His expertise and leadership in atmospheric sciences are reflected in his role as a principal investigator and his active involvement in the Biosphere Atmosphere Interactions Group at UC Irvine.
Research topics
- Chemistry
- Environmental chemistry
- Atmospheric sciences
- Geography
- Meteorology
- Environmental science
- Ecology
- Organic chemistry
- Environmental engineering
- Geomorphology
Selected publications
Effects of Anthropogenic and Biogenic Volatile Organic Compounds on Los Angeles Air Quality
Environmental Science & Technology · 2021 · 250 citations
-xylene, toluene, propylene, and formaldehyde. The top five contributors to SOAP were toluene, mineral spirits, benzene, heptadecane, and hexadecane. Mobile and solvent sources were the dominant VOC sources for both OFP and SOAP. The potential increases in biogenic VOC emissions due to future urban greening had significant effects on urban air quality that offset the benefits of reducing anthropogenic VOC emissions. This study demonstrates that urban greening programs in Los Angeles county, and…
Dry Deposition of Ozone Over Land: Processes, Measurement, and Modeling
Reviews of Geophysics · 2020 · 201 citations
Dry deposition of ozone is an important sink of ozone in near surface air. When dry deposition occurs through plant stomata, ozone can injure the plant, altering water and carbon cycling and reducing crop yields. Quantifying both stomatal and nonstomatal uptake accurately is relevant for understanding ozone's impact on human health as an air pollutant and on climate as a potent short-lived greenhouse gas and primary control on the removal of several reactive greenhouse gases and air pollutants.…
Atmospheric chemistry and physics · 2020 · 59 citations
Abstract. Biogenic volatile organic compounds (BVOCs) are important components of the atmosphere due to their contribution to atmospheric chemistry and biogeochemical cycles. Tropical forests are the largest source of the dominant BVOC emissions (e.g. isoprene and monoterpenes). In this study, we report isoprene and total monoterpene flux measurements with a proton transfer reaction time-of-flight mass spectrometer (PTR-TOF-MS) using the eddy covariance (EC) method at the Tapajós National Forest…
Atmospheric chemistry and physics · 2021 · 18 citations
Abstract. We report OH reactivity observations by a chemical ionization mass spectrometer–comparative reactivity method (CIMS-CRM) instrument in a suburban forest of the Seoul metropolitan area (SMA) during the Korea–United States Air Quality Study (KORUS-AQ 2016) from mid-May to mid-June of 2016. A comprehensive observational suite was deployed to quantify reactive trace gases inside of the forest canopy including a high-resolution proton transfer reaction time-of-flight mass spectrometer (PTR-…
Journal of Advances in Modeling Earth Systems · 2025-03-01 · 15 citations
articleOpen accessAbstract The overestimation of surface ozone concentration in low‐resolution global atmospheric chemistry and climate models has been a long‐standing issue. We first update the ozone dry deposition scheme in both high‐ (0.25°) and low‐resolution (1°) Community Earth System Model (CESM) version 1.3 runs, by adding the effects of leaf area index and correcting the sunlit and shaded fractions of stomatal resistances. With this update, 5‐year‐long summer simulations (2015–2019) using the low‐resolut…
Recent grants
Collaborative Proposal: BEAR-oNS: Biogenic Emissions and Aerosol Response on the North Slope
NSF · $296k · 2021–2025
NSF · $675k · 2024–2027
NSF · $413k · 2018–2022
Frequent coauthors
- 184 shared
Thomas Karl
Universität Innsbruck
- 175 shared
Roger Seco
Institute of Environmental Assessment and Water Research
- 157 shared
P. C. Harley
Denver School of Nursing
- 135 shared
J. Greenberg
NSF National Center for Atmospheric Research
- 128 shared
Detlev Helmig
NOAA Air Resources Laboratory
- 105 shared
Saewung Kim
University of California, Irvine
- 102 shared
A. H. Goldstein
- 102 shared
Christine Wiedinmyer
Cooperative Institute for Research in Environmental Sciences
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