CHEM 1212D

alopatka [at] umd [dot] edu

Michael Evans

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I am primarily interested in reconstructing paleoclimates of the Holocene using carbonate proxies and stable isotope geochemistry techniques in order to better understand changes in the amplitude and frequency of the El-Nino Southern Oscillation (ENSO). These observations can act as an analog for earth system scientists modeling ENSO variability due to anthropogenic forcing, which is not yet well understood. The need to validate general circulation model (GCM) results motivates my interest in producing high-resolution, extended time series of paleoproxy measurements. Robust observations and models of ENSO variability will not only improve scientists' understanding of the Earth system, but it will also allow policymakers to craft reasonable and scientifically grounded climate legislation.

Evans, M. N., Selmer, K. J., Breeden III, B. T., Lopatka, A. S., Plummer, R. E. (2016) Correction algorithm for online continuous flow δ¹³C and δ¹⁸O carbonate and cellulose stable isotope analyses. Geochemistry, Geophysics, Geosystems. 17 DOI: 10.1002/2016GC006469

Smerdon, J. E., Luterbacher, J., Phipps, S. J., Anchukaitis, K. J., Ault, T., Coats, S., Cobb, K. M., Cook, B. I., Colose, C., Felis, T., Gallant, A., Jungclaus, J. H., Konecky, B., LeGrande, A., Lewis, S., Lopatka, A. S., Man, W., Mankin, J. S., Maxwell, J. T., Otto-Bliesner, B. L., Partin, J. W., Singh, D., Steiger, N. J., Stevenson, S., Tierney, J. E., Zanchettin, D., Zhang, H., Atwood, A. R., Andreu-Hayles, L., Baek, S. H., Buckley, B., Cook, E. R., D'Arrigo, R., Dee, S. G., Griffiths, M., Kulkarni, C., Kushnir, Y., Lehner, F., Leland, C., Linderholm, H. W., Okazaki, A., Palmer, J., Piovano, E., Raible, C. C., Rao, M. P., Scheff, J., Schmidt, G. A., Seager, R., Widmann, M., Williams, A. P., and Xoplaki, E. (2017) PAGES Hydro2k Consortium: Comparing proxy and model estimates of hydroclimate variability and change over the Common Era. Climate of the Past Discussions. 13 1851-1900. DOI: 10.5194/cp-13-1851-2017