People

My research focuses on Earth's atmospheric and biogeochemical cycles. Specifically, I use stable isotopes to understand processes ranging from stratospheric chemistry to carbon cycling in the oceans. My expertise also includes public engagement in science: I was a founding producer for PHD TV, an online-based science outreach venture led by Jorge Cham (creator of PHD Comics). My animated video, Teamwork in the Tropical Atlantic (a collaboration with Meg Rosenburg), was a finalist in the 2014 BLUE Ocean Film Festival and won second place in the 2014 Ocean180 video contest. I received my B.A. in chemistry from Oberlin College and Ph.D. in physical chemistry from the California Institute of Technology.

NSF Earth Sciences Postdoctoral Fellow, UCLA 2011 - 2013
Postdoctoral Research Associate, USC 2010
Ph.D., Physical Chemistry, California Institute of Technology 2010
B.A., Chemistry (with Highest Honors), Oberlin College 2004

David and Lucile Packard Foundation Science & Engineering Fellow, 2017
F. W. Clarke Medal, Geochemical Society, 2016
Christine Mirzayan Science & Technology Policy Fellowship, National Academy of Sciences, 2014
NSF Earth Sciences Postdoctoral Fellowship, 2011 – 2013
Phi Beta Kappa and Sigma Xi, 2004

Stable isotopes, clumped isotopes, atmospheric chemistry, chemical oceanography, oxygen

2019

• Yeung, L. Y., L. T. Murray, P. Matinerie, E. Witrant, H. Hu, A. Banerjee, A. Orsi, and J. Chappelaz, "Isotopic constraint on the twentieth-century increase in tropospheric ozone," Nature 570 (2019) 224-227. doi: 10.1038/s41586-019-1277-1
• Yeung, L. Y., J. A. Haslun, N. E. Ostrom, T. Sun, E. D. Young, M. A. H. J. van Kessel, S. Lücker, and M. S. M. Jetten, "In situ quantification of biological N₂ production using naturally occurring ¹⁵N¹⁵N," Environ. Sci. Technol. 53 (2019) 5168-5175. doi: 10.1021/acs.est.9b00812
• Li, B., L. Y. Yeung, H. Hu, and J. L. Ash, "Kinetic and equilibrium fractionation of O₂ isotopologues during air-water gas transfer and implications for tracing oxygen cycling in the ocean," Mar. Chem. 210 (2019) 61-71. doi: 10.1016/j.marchem.2019.02.006

2018

• Yeung, L. Y., J. A. Hayles, H. Hu, J. L. Ash, and T. Sun, “Scale distortion from pressure baselines as a source of inaccuracy in triple-isotope measurements,” Rapid Commun. Mass Spectrom. 32 (2018) 1811-1821. doi: 10.1002/rcm.8247

2017

• Yeung, L. Y., "Low oxygen and argon in the Neoproterozoic atmosphere at 815 Ma," Earth Planet. Sci. Lett. 480 (2017) 66-74. doi: 10.1016/j.epsl.2017.09.044
• Yeung., L. Y., S. Li, I. E. Kohl, J. A. Haslun, N. E. Ostrom, H. Hu, E. A. Schauble, T. P. Fischer, and E. D. Young, “Extreme enrichment in atmospheric ¹⁵N¹⁵N,” Sci. Adv. 3 (2017) eaao6741.
• Young, E. D., I. E. Kohl, B. Sherwood Lollar, G. Etiope, D. Rumble III, S. Li, M. A. Haghnegahdar, E. A. Schauble, K. A. McCain, D. I. Foustoukus, C. Sutclife, O. Warr, C. J. Ballentine, T. C. Onstott, H. Hosgormez, A. Neubeck, J. M. Marques, I. Pérez-Rodríguez, A. R. Rowe, D. E. LaRowe, C. Magnabosco, L. Y. Yeung, J. L. Ash, and L. T. Bryndzia, “The relative abundances of resolved ¹²CH₂D₂ and ¹³CH₃D and mechanisms controlling isotopic bond ordering in abiotic and biotic methane gases,” Geochim. Cosmochim. Acta 207 (2017) 235-264.

2016

• Yeung, L. Y., L. T. Murray, J. L. Ash, E. D. Young, K. A. Boering, E. L. Atlas, S. M. Schauffler, R. A. Lueb, R. L. Langenfelds, P. B. Krummel, L. P. Steele, and S. D. Eastham, “Isotopic ordering in atmospheric O₂ as a tracer of ozone photochemistry and the tropical atmosphere,” J. Geophys. Res. Atmos. 121 (2016) 12,541-12,559.
• Lee, C. T. A., L. Y. Yeung, R. McKenzie, Y. Yokoyama, K. Ozaki, and A. Lenardic, “The rise in atmospheric oxygen linked to the emergence of continents,” Nature Geosci. 9 (2016) 421-427.
• Yeung, L. Y.,“Combinatorial effects on clumped isotopes and their significance in biogeochemistry,” Geochim. Cosmochim. Acta 172 (2016), 22-38. doi: 10.1016/j.gca.2015.09.020

2015

• Yeung, L. Y.,^† J. L. Ash,^† and E. D. Young, “Biological signatures in clumped isotopes of O₂,” Science 348 (2015), 431-434. doi: 10.1126/science.aaa6284. ^†Equal contributions
• Yeung, L. Y., W. M. Berelson, D. E. Hammond, M. G. Prokopenko, C. Wolfe, and N. Rollins, “Upper-ocean gas dynamics from radon profiles in the Eastern Tropical South Pacific,” Deep-Sea Res. Pt. I. 99 (2015), 35-45. doi: 10.1016/j.dsr.2015.01.008.

2003 - 2014

• Yeung, L. Y., J. L. Ash, and E. D. Young, “Rapid photochemical equilibration of isotopic bond ordering in O₂,” J. Geophys. Res. 119 (2014), D021909. doi: 10.1002/2014JD021909.
• Young, E. D., L. Y. Yeung, and I. E. Kohl, “On the Δ¹⁷O budget of atmospheric O₂,” Geochim. Cosmochim. Acta. 135 (2014), 102-125. doi: 10.1016/j.gca.2014.03.026
• Yeung, L. Y., E. D. Young, and E. A. Schauble, “Measurements of ¹⁸O¹⁸O and ¹⁷O¹⁸O in the atmosphere and the influence of isotope-exchange reactions,” J. Geophys. Res. 117 (2012): D18306. doi: 10.1029/2012JD017992
• Yeung, L. Y., W. M. Berelson, E. D. Young, M. G. Prokopenko, N. Rollins, V. J. Coles, J. P. Montoya, E. J. Carpenter, D. K. Steinberg, R. A. Foster, D. G. Capone, and P. L. Yager, “Impact of diatom-diazotroph assemblages on carbon export in the Amazon river plume,” Geophys. Res. Lett. 39 (2012): L18609. doi: 10.1029/2012GL053356
• Prokopenko, M. G., O. Paulius, J. Granger, and L. Y. Yeung, “Exact evaluation of gross photosynthetic production from the oxygen triple-isotope composition of O₂: Implications for the net-to-gross primary production ratios,” Geophys. Res. Lett. 38 (2011): L14603. doi: 10.1029/2011GL047652
• Huntington, K. W., J. M. Eiler, H. P. Affek, W. Guo, M. Bonafacie, L. Y. Yeung, N. Thiagarajan, B. Passey, A. Tripati, M. Daëron, R. Came, "Methods and limitations of 'clumped' CO₂ isotope (Δ₄₇) analysis by gas source isotope ratio mass spectrometry," J. Mass Spectrom. 44 (2009): 1318-1329. doi: 10.1002/jms.1002
• Yeung, L. Y.,^† H. P. Affek,^† K. J. Hoag, W. Guo, A. A. Wiegel, E. L. Atlas, S. M. Schauffler, M. Okumura, K. A. Boering, and J. M. Eiler, "Large and unexpected enrichment in stratospheric ¹⁶O¹³C¹⁸O and its meridional variation," Proc. Natl. Acad. Sci. USA 106 (2009): 11496-11501. doi: 10.1073/pnas.0902930106; Erratum ^†Equal contributions