In my research, I use a variety of analytical chemistry techniques to investigate pressing questions about oceanic and terrestrial carbon cycling, particularly the interplay of carbon reservoirs, greenhouse gases, and modern climate change. 

Publications


Sparrow, K. J., J. P. Chanton, U. M. Hanke, M. D. Kurz, and A. P. McNichol. “Peatland organic matter quality varies with latitude as confirmed from FTIR and Ramped Pyrolysis Oxidation.” In preparation for PLOS ONE.


Wilson, S. T., A. N. Al-Haj, A. Bourbonnais, ... K. J. Sparrow, et al. (2020). “Ideas and perspectives: A strategic assessment of methane and nitrous oxide measurements in the marine environment.” Biogeosciences, https://doi.org/10.5194/bg-17-5809-2020

Joung, D., M. Leonte, D. L. Valentine, K. J. Sparrow, T. Weber, and J. D. Kessler (2020). “Radiocarbon in marine methane reveals patchy impact of seeps on surface waters.” Geophysical Research Letters, https://doi.org/10.1029/2020GL089516

 

Sparrow, K. J., J. P. Chanton, R. Green, C. Scheutz, G. Hater, T. Abichou, and L. C. Wilson (2019). “Stable isotopic determination of methane oxidation: when smaller scales are better.” Waste Management, https://doi.org/10.1016/j.wasman.2019.07.032


Sparrow, K. J., and J. D. Kessler (2018). “Comment on ‘The origin of methane in the East Siberian Arctic Shelf unraveled with triple isotope analysis,’ by Sapart et al. 2017.” Biogeosciences, https://doi.org/10.5194/bg-15-4777-2018

Sparrow, K. J., J. D. Kessler, J. R. Southon, F. Garcia-Tigreros, K. M. Schreiner, C. D. Ruppel, et al. (2018). “Limited contribution of ancient methane to surface waters of the U.S. Beaufort Sea shelf.” Science Advances, https://doi.org/10.1126/sciadv.aao4842

Sparrow, K. J. and J. D. Kessler (2017). “Efficient collection and preparation of methane from low concentration waters for natural abundance radiocarbon analysis.” Limnology & Oceanography: Methods, https://doi.org/10.1002/lom3.10184

 

Kodovska, F. G. T., K. J. Sparrow, S. A. Yvon-Lewis, A. Paytan, N. T. Dimova, A. L. Lecher, and J. D. Kessler (2016). “Dissolved methane and carbon dioxide fluxes in Subarctic and Arctic regions: Assessing measurement techniques and spatial gradients.” Earth and Planetary Science Letters, http://dx.doi.org/10.1016/j.epsl.2015.12.002

 

Dimova, N. T., A. Paytan, J. D. Kessler, K. J. Sparrow, F. G. T. Kodovska, A. L. Lecher, et al. (2015). “The current magnitude and mechanisms of groundwater discharge in the Arctic: Case study from Alaska.” Environmental Science and Technology, https://doi.org/10.1021/acs.est.5b02215

 

Lecher, A. L., J. D. Kessler, K. J. Sparrow, F. G. T. Kodovska, N. Dimova, J. Murray, et al. (2015). “Methane transport through submarine groundwater discharge to the North Pacific and Arctic Ocean at two Alaskan sties.” Limnology and Oceanography, https://doi.org/10.1002/lno.10118

 

Paytan, A., A. L. Lecher, N. Dimova, K. J. Sparrow, F. G. T. Kodovska, J. Murray, S. Tulaczyk, and J. D. Kessler (2015). “Methane transport from the active layer to lakes in the Arctic using Toolik Lake, Alaska, as a case study.” Proceedings of the National Academy of Sciences, https://doi.org/10.1073/pnas.1417392112