Xiahong Feng

Academic Appointments

Frederick Hall Professor of Mineralogy and Geology
Professor of Earth Sciences

The main feature of my research is the interdisciplinary approach to global and local environmental problems. I use major and trace element concentrations and variations of stable isotopic ratios of oxygen, hydrogen, carbon and nitrogen in natural materials, such as rocks, water, tree-rings, soils and air, to study the function and dynamics of natural systems, to trace the history of the climatic and environmental changes and to understand the mechanisms for such changes. Research interests include understanding the stable oxygen and hydrogen isotopic variations in hydrological processes, solute and contaminant transport in watersheds or in snow and their effects on stream chemistry, rates and mechanisms of plant and soil organic matter decomposition and the implications to the global carbon cycle, and reconstruction of paleoclimate using oxygen and hydrogen isotopic compositions of tree rings. Recent projects include stable oxygen and hydrogen isotopic compositions in arctic precipitation and their climatological significance to ice core interpretation; impact of sea ice variations on the arctic hydrological cycles; the influence of environmental conditions on the isotopic variations of marine boundary layer vapor.

220 Steele
HB 6105
Earth Sciences
The John Sloan Dickey Center for International Understanding
B.S. Peking University
M.S. Peking University
Ph.D. Case Western Reserve University

Selected Publications

Conroy, Nathan Alec, Brent David Newman, Jeffrey Martin Heikoop, George Bradford Perkins, Xiahong Feng, Cathy Jean Wilson, Stan Duane Wullschleger (2020) Timing and duration of hydrological transitions in Arctic polygonal ground from stable isotopes. Hydrological Processes, 34:749–764. DOI: 10.1002/hyp.13623.

Ouyang*, B., Renock, D. J., Ajemigbitse, M. A., Van Sice, K., Warner, N. R., Landis, J. D., and Feng, X. (2019) Radium in hydraulic fracturing wastewater: distribution in suspended solids and implications to its treatment by sulfate co-precipitation, Environmental Science Processes & Impacts, 21, 339-351, 10.1039/c8em00311d.

Feng, X., Posmentier, E. S., Sonder, L. J., and Fan, N. (2019) Rethinking Craig and Gordon's approach to modeling isotopic compositions of marine boundary layer vapor, Atmospheric Chemistry and Physics, 19, 4005-4024, 10.5194/acp-19-4005-2019.

Kopec*, B. G., Feng, X., Posmentier, E. S., and Sonder, L. J. (2019) Seasonal deuterium excess variations of precipitation at Summit, Greenland, and their climatological significance, Journal of Geophysical Research: Atmospheres, 124, 72-91, 10.1029/2018JD028750.

Bailey*, A., Posmentier, E., and Feng, X. (2018) Patterns of evaporation and precipitation drive global isotopic changes in atmospheric moisture, Geophysical Research Letters, 45, 7093–7101, 10.1029/2018GL078254.

Kopec*, B. G., X. Feng, E. S. Posmentier, J. W. Chipman, and R. A. Virginia (2018), Use of principal component analysis to extract environmental information from lake water isotopic compositions, Limnology and Oceanography, online: doi:10.1002/lno.10776.

Putman*, A. L., X. Feng, E. S. Posmentier, A. M. Faiia, and L. J. Sonder (2017), Testing a novel method for initializing air parcel back trajectories in precipitating clouds using reanalysis data, Journal of Atmospheric and Oceanic Technology, 34, 2393-2405, doi:10.1175/JTECH-D-17-0053.1.

Curtis, A.N., Bugge, D.M., Buckman, K.L., Feng, X., Faiia, A., Chen, C.Y. (2017). Influence of sample preparation on estuarine macrofauna stable isotope signatures in the context of contaminant bioaccumulation studies. Journal of Experimental Marine Biology and Ecology 493, 1-6.

Putman*, A., Feng, X., Sonder, L.J. and Posmentier, E.S. (2017) Annual variation in event-scale precipitation δ2H at Barrow, AK reflects vapor source region, Atmospheric Chemistry and Physics, 17, 4627–4639.

Feng, X., Lauder*, A.M., Posmentier, E.S., Kopec*, B.G., and Virginia, R.S. (2016) Evaporation and transport of water isotopologues from Greenland lakes: The lake size effect. Quaternary Science Reviews, 131, 302-315.

Kopec*, B.G., Feng, X., Michel, F.A., Posmentier, E.S. (2016) Influence of sea ice on Arctic precipitation. Proceeding of the National Academy of Sciences, 113, 46-51.

Kopec*, B. G., A. M. Lauder*, E. S. Posmentier, and X. Feng (2014), The diel cycle of water vapor in west Greenland, Journal of Geophysical Research Atmosphere, 119, doi:10.1002/ 2014JD021859.

Wang, G. and Feng, X. (2012) Response of plants’ water use efficiency to increasing atmospheric CO2 concentration. Environmental Science and Technology, 46, 8610-8620.

Feng, X., A. M. Faiia, and E. S. Posmentier (2009), Seasonality of isotopes in precipitation: A global perspective, Journal of Geophysical Research-Atmosphere, 114, D08116, doi:10.1029/2008JD011279.

Feng, X. , J W Kirchner, and C Neal (2004) Measuring Catchment-scale Chemical Retardation Using Spectral Analysis of Reactive and Passive Chemical Tracer Time Series. Journal of Hydrology, 292 (2004) 296-307.

Feng, X. (2002) A theoretical analysis of carbon isotope evolution of decomposing plant litters and soil organic matter. Global Biogeochemical Cycles, 16(4), Art. No.1119, doi:10.1029/2002GB001867.

Kirchner, J.W., Feng X. and Neal, C. (2000) Fractal stream chemistry and its implication for contaminant transport in catchments. Nature, 403, 524-527.

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