Shari Yvon-Lewis

Shari Yvon-Lewis


Department Head

Chemical Oceanography: Trace Gas Biogeochemistry

  (979) 458-1816

  Eller O&M 1204


In my lab, we study the role of the ocean in regulating atmospherically important trace gases.  A variety of trace gases including halocarbons (e.g. methyl halides, trihalomethanes), nitrous oxide, carbon dioxide, and methane are both produced and degraded in the ocean.  The distribution and strength of the various oceanic sources and sinks impacts the exchange of these gases between the ocean and atmosphere.  Through ship-board measurements, laboratory studies and modeling, my research group examines the role/magnitude of oceanic influence on trace gases that are important in the atmosphere as stratospheric ozone depletors or greenhouse gases.

Selected Publications

Selected Publications (*=student author)

Chapman, P., S. F. DiMarco, R. M. Key, C. Previti*, S. Yvon-Lewis (2017), Age Constraints on Gulf of Mexico Deep Water Ventilation as Determined by 14C Measurements, Radiocarbon, 2017, p. 1–16, doi: 10.1017/RDC.2017.80

Butler, J. H., S. A. Yvon-Lewis, J.M.  Lobert, D.B. King, S. A. Montzka, J. L.  Bullister, V. Koropalov, J. W. Elkins, B. D. Hall, L. Hu, and Y. Liu (2016) A comprehensive estimate for loss of atmospheric carbon tetrachloride (CCl4) to the ocean, Atmos. Chem. Phys., 16, 10899-10910, doi:10.5194/acp-16-10899-2016.

Chipperfield, M. P., Q. Liang, M. Rigby, R. Hossaini, S. A. Montzka, S. Dhomse, W. Feng, R. G. Prinn, R. F. Weiss, C. M. Harth, P. K. Salameh, J. Mühle, S. O'Doherty, D. Young, P. G. Simmonds, P. B. Krummel, P. J. Fraser, L. P. Steele, J. D. Happell, R.C. Rhew, J. Butler, S. A. Yvon-Lewis, B. Hall, D. Nance, F. Moore, B. R. Miller, J. W. Elkins, J. J. Harrison, C. D. Boone, E. L. Atlas, and E. Mahieu (2016) Model sensitivity studies of the decrease in atmospheric carbon tetrachloride, Atmos. Chem. Phys., 16, 15741-15754, doi:10.5194/acp-16-15741-2016.

Bianchi, T. S., D. C. O. Thornton, S. A. Yvon-Lewis, G. M. King, T. I. Eglinton, M. R. Shields**, N. D. Ward, and J. Curtis (2015), Positive priming of terrestrially derived dissolved organic matter in a freshwater microcosm system, Geophys. Res. Lett., 42, doi:10.1002/2015GL064765.

Garcia-Tigreros Kodovska**, F., K. J. Sparrow**, S. A. Yvon-Lewis, A. Paytan, N. T. Dimova, A. Lecher, J. D. Kessler (2015), Dissolved methane and carbon dioxide fluxes in Subarctic and Arctic regions: Assessing measurement techniques and spatial gradients, Earth and Planet. Sci. Lett.,

Liu, Y., D.C.O. Thornton, T.S. Bianchi, W.A. Arnold, M.R. Shields**, J. Chen, S.A. Yvon-Lewis (2015) Dissolved organic matter composition drives the marine production of brominated very short-lived substances, Environ. Sci. Technol., 49(6), pp 3366–3374 DOI:10.1021/es505464k

Bianchi, T.S., C. L. Osburn, M. R. Shields**, S. Yvon-Lewis, J. Young*, L. Guo, and Z. Zhou (2014), Deepwater Horizon Oil in Gulf of Mexico Waters after Two Years: Transformation into the Dissolved Organic Matter Pool, Environ. Sci. Technol., DOI: 10.1021/es501547b

Du*, M., S. Yvon-Lewis, F. Garcia Tigreros**, D. L. Valentine, S. D. Mendes, and J. D. Kessler (2014), High resolution measurements of methane and carbon dioxide in surface waters over a natural seep reveal dynamics of air-sea flux,  Environ. Sci. Technol., DOI: 10.1021/es5017813.

Errera, R.M., S. Yvon-Lewis, J.D. Kessler, L. Campbell (2014), Reponses of the dinoflagellate Karenia brevis to climate change: pCO2 and sea surface temperatures, Harmful Algae, 37, 110–116, doi: 10.1016/j.hal.2014.05.012.

Bianchi, T.S., F. Garcia-Tigreros*, S.A. Yvon-Lewis, M. Shields**, H. J. Mills, D. Butman, C. Osburn, P. Raymond, C. Shank, S. F. DiMarco, N. Walker, B. Reese, R. Mullins, A. Quigg, G. R. Aiken, and E. L. Grossman (2013), Enhanced transfer of terrestrially derived carbon to the atmosphere in a flooding event, Geophys. Res. Lett., vol. 40, 1–7, doi:10.1029/2012GL054145.

Hu*, L., S.A. Yvon-Lewis, J.H. Butler, D.B. King, J. Lobert and S.A. Montzka (2013), An Improved Oceanic Budget for Methyl Chloride, J. Geophys. Res., VOL. 118, 1–11, doi:10.1029/2012JC008196.

Liu*, Y., S. A. Yvon-Lewis, D.C.O. Thornton, J.H. Butler, T.S. Bianchi, L. Campbell, L. Hu* and R.W. Smith** (2013), Spatial and temporal distributions of bromoform and dibromomethane in the Atlantic Ocean and their relationship with photosynthetic biomass, J. Geophys. Res. Oceans, 118, 3950–3965, doi:10.1002/jgrc.20299.

Liu*, Y., S. A. Yvon-Lewis, D.C.O. Thornton, L. Campbell and T.S. Bianchi (2013), Spatial Distribution of Brominated Very Short-Lived Substances in the Eastern Pacific, J. Geophys. Res., 118,  DOI 10.1002/jgrc.20183.

Ziska, F., B. Quack, K. Abrahamsson, S. D. Archer, E. Atlas, T. Bell, J. H. Butler, L. J. Carpenter, C. E. Jones, N. R. P. Harris, H. Hepach, K. G. Heumann, C. Hughes, J. Kuss, K. Krüger, P. Liss, R. M. Moore, A. Orlikowska, S. Raimund, C. E. Reeves, W. Reifenhäuser, A. D. Robinson, C. Schall, T. Tanhua, S. Tegtmeier, S. Turner, L. Wang, D. Wallace, J. Williams, H. Yamamoto, S. Yvon-Lewis, and Y. Yokouchi (2013), Global sea-to-air flux climatology for bromoform, dibromomethane and methyl iodide, Atmos. Chem. Phys., 13, 8915–8934, doi:10.5194/acp-13-8915-2013 2013.

Hu*, L., S.A. Yvon-Lewis, Y. Liu*, T. S. Bianchi (2012), The Ocean in near Equilibrium with Atmospheric CH3Br, Global Biogeochem. Cycles, GB3016, doi:10.1029/2011GB004272.

Hu*, L., S.A. Yvon-Lewis, J. D. Kessler and I.R. MacDonald (2012), Methane fluxes to the atmosphere from deep hydrocarbon seeps in the northern Gulf of Mexico, J. Geophys. Res., 117, C01009, doi:10.1029/2011JC007208.

Mahajan, A.S., J. C. Gómez Martín, T. Hay, S.-J. Royer, S. A. Yvon-Lewis, Y. Liu*, L. Hu*, C. Prados-Roman, C. Ordóñez, J. M. C. Plane and A. Saiz-Lopez (2012), Latitudinal distribution of reactive iodine in the Eastern Pacific and its link to open ocean sources, Atmos. Chem. Phys., 12, 11609-11617, doi:10.5194/acp-12-11609-2012.

Kessler, J.D., D.L. Valentine, M.C. Redmond, M. Du**, E.W. Chan**, S.D. Mendes, E.W. Quiroz, C.J. Villanueva, S.S. Shusta, L.M. Werra, S.A. Yvon-Lewis and T.C. Weber (2011), A persistent oxygen anomaly reveals the fate of spilled methane in the deep Gulf of Mexico, Science, 331, DOI: 10.1126/science.1199697.

Liu*, Y., S.A. Yvon-Lewis, L.Hu*, J. Salisbury and J.E. O’Hern** (2011), CHBr3, CH2Br2 and CHClBr2 in the U.S. Coastal Waters during the Gulf of Mexico and East Coast Carbon (GOMECC) Cruise, J. Geophys. Res., 116, C10004, doi:10.1029/2010JC006729.

Yvon-Lewis, S. A., L. Hu*, and J. Kessler (2011), Methane flux to the atmosphere from the Deepwater Horizon oil disaster, Geophys. Res. Lett., 38, L01602, doi:10.1029/2010GL045928.

Hu*, L., S.A. Yvon-Lewis, Y. Liu*, J. Salisbury and J.E. O’Hern** (2010), Coastal emissions of methyl bromide and methyl chloride along the eastern Gulf of Mexico and east coast of the U.S., Global Biogeochem. Cycles, 24, GB1007, doi:10.1029/2009GB003514.

Taylor**, T.R.B., D.N. Ford, S.A. Yvon-Lewis and E. Lindquist (2010), Science, engineering, and technology in the policy process for natural systems risk mitigation, System Dynamics Review.

Valentine, D.L., J.D. Kessler, M.C. Redmond, S.D. Mendes, M.B. Heintz, C. Farwell, L. Hu*, F. Kinnaman, S.A. Yvon-Lewis, M. Du**, E.W. Chan**, F. Garcia Tigreros*, C.J. Villanueva (2010), Propane respiration jump-starts microbial response to a deep oil spill, Science, 330, 208, DOI: 10.1126/science.1196830.


Ph.D., Marine and Atmospheric Chemistry, Rosenstiel School of Marine and Atmospheric Science, University of Miami, 1994

B.S., Chemistry, University of Massachusetts, 1989

Additional Information


  • 2011-present Associate Professor, Dept. of Oceanography, Texas A&M University, College Station, TX.
  • 2004-2011 Assistant Professor, Dept. of Oceanography, Texas A&M University, College Station, TX.
  • 1997-2004 Research Chemist, NOAA/AOML, Miami, FL.
  • 1996-1997 Research Associate, Univ. of Colorado and NOAA/CMDL, Boulder, CO.
  • 1994-1996 DOE Global Change Distinguished Postdoctoral Fellow, NOAA/CMDL, Boulder, CO.

Recent Fieldwork

STUDENT ONLY - Gulf of Mexico              (MCH, R/V Pelican, August 2012) – 0 days

[sent 1 TAMU graduate student – Fenix Garcia Tigreros – 6 days]

STUDENT ONLY - Gulf of Mexico              (GISR, R/V Pelican, July 2012) – 0 days

[sent 1 TAMU graduate student – Mengran Du – 6 days]

STUDENT ONLY - Gulf of Mexico              (MCH, R/V Pelican, April 2012) – 0 days

[sent 1 TAMU graduate student - Fenix Garcia Tigreros – 6 days]

STUDENT ONLY - Gulf of Mexico              (MCH, R/V Pelican, August 2011) – 0 days

[sent 1 TAMU graduate student - Fenix Garcia Tigreros – 6 days]

STUDENT ONLY - Gulf of Mexico              (MCH, Blazing Seven, June 2011) – 0 days

[sent 1 TAMU graduate student - Fenix Garcia Tigreros – 4 days]

STUDENT ONLY - Gulf of Mexico              (MCH, R/V Pelican, April 2011) – 0 days

[sent 1 TAMU graduate student - Fenix Garcia Tigreros – 6 days]

Atlantic Ocean                        (HalocAST-A, FS Polarstern, Oct-Nov 2010) – 32 days

[included 1 TAMU graduate student – Lei Hu]

STUDENT ONLY - Gulf of Mexico              (MCH, R/V Pelican, August 2010) – 0 days

[sent 1 TAMU graduate student - Fenix Garcia Tigreros – 6 days]

STUDENT ONLY - Gulf of Mexico              (PLUMES, R/V Cape Hatteras, June 2010) – 0 days

[sent 2 TAMU graduate students – Lei Hu and Fenix Garcia Tigreros – 13 days]

Pacific Ocean              (HalocAST-P, R/V Thomas Thompson, Mar-Apr 2010) – 30 days (Chief Sci.)

[included 2 TAMU graduate students – Lei Hu and Yina Liu]

Gulf of Mexico                        (HYFLUX, R/V Brooks McCall, July 2009) – 14 days

[included 1 TAMU graduate student – Lei Hu]

Antarctic                     (ESASSI, R/V Hesperides, January 2008) – 21 days

[included 2 TAMU graduate students – Yina Liu and Julia O’Hern]

Coastal US                   (GOMECC, R/V Ron Brown, July, 2007) – 28 days

[included 1 TAMU graduate student – Julia O’Hern]

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