Todd Sowers

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Affiliate Researcher
Titles and Affiliations
Senior Scientist, Earth and Environmental Systems Institute

Research Summary

Research is in tropical paleoclimate records as well as polar climate records. Past projects have addressed elemental and isotopic composition of trapped gases in the Huascaran and Sajama ice cores from South America, testing the "clathrate gun" hypothesi

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Recent Publications

East Greenland ice core dust record reveals timing of Greenland ice sheet advance and retreat

Simonsen, M. F., Baccolo, G., Blunier, T., Borunda, A., Delmonte, B., Frei, R., Goldstein, S., Grinsted, A., Kjær, H. A., Sowers, T., Svensson, A., Vinther, B., Vladimirova, D., Winckler, G., Winstrup, M. & Vallelonga, P., Dec 1 2019, In : Nature communications. 10, 1, 4494.

Research output: Contribution to journalArticle

The SP19 chronology for the South Pole Ice Core - Part 1: Volcanic matching and annual layer counting

Winski, D. A., Fudge, T. J., Ferris, D. G., Osterberg, E. C., Fegyveresi, J. M., Cole-Dai, J., Thundercloud, Z., Cox, T. S., Kreutz, K. J., Ortman, N., Buizert, C., Epifanio, J., Brook, E. J., Beaudette, R., Severinghaus, J., Sowers, T., Steig, E. J., Kahle, E. C., Jones, T. R., Morris, V. & 11 others, Aydin, M., Nicewonger, M. R., Casey, K. A., Alley, R. B., Waddington, E. D., Iverson, N. A., Dunbar, N. W., Bay, R. C., Souney, J. M., Sigl, M. & McConnell, J. R., Oct 8 2019, In : Climate of the Past. 15, 5, p. 1793-1808 16 p.

Research output: Contribution to journalArticle

Using environmental tracers and modelling to identify natural and gas well-induced emissions of methane into streams

Grieve, P. L., Hynek, S. A., Heilweil, V., Sowers, T., Llewellyn, G., Yoxtheimer, D., Solomon, D. K. & Brantley, S. L., Apr 2018, In : Applied Geochemistry. 91, p. 107-121 15 p.

Research output: Contribution to journalArticle

Water column and sediment stable carbon isotope biogeochemistry of permanently redox-stratified Fayetteville Green Lake, New York, U.S.A.

Havig, J. R., Hamilton, T. L., McCormick, M., McClure, B., Sowers, T., Wegter, B. & Kump, L. R., Mar 2018, In : Limnology and Oceanography. 63, 2, p. 570-587 18 p.

Research output: Contribution to journalArticle

Interlaboratory comparison of δ13C and δd measurements of atmospheric CH4 for combined use of data sets from different laboratories

Umezawa, T., Brenninkmeijer, C. A. M., Röckmann, T., Van Der Veen, C., Tyler, S. C., Fujita, R., Morimoto, S., Aoki, S., Sowers, T., Schmitt, J., Bock, M., Beck, J., Fischer, H., Michel, S. E., Vaughn, B. H., Miller, J. B., White, J. W. C., Brailsford, G., Schaefer, H., Sperlich, P. & 10 others, Brand, W. A., Rothe, M., Blunier, T., Lowry, D., Fisher, R. E., Nisbet, E. G., Rice, A. L., Bergamaschi, P., Veidt, C. & Levin, I., Mar 2 2018, In : Atmospheric Measurement Techniques. 11, 2, p. 1207-1231 25 p.

Research output: Contribution to journalArticle

Global atmospheric teleconnections during Dansgaard-Oeschger events

Markle, B. R., Steig, E. J., Buizert, C., Schoenemann, S. W., Bitz, C. M., Fudge, T. J., Pedro, J. B., Ding, Q., Jones, T. R., White, J. W. C. & Sowers, T., Jan 1 2017, In : Nature Geoscience. 10, 1, p. 36-40 5 p.

Research output: Contribution to journalArticle

Geochemical and Microbiological Studies of Nitrous Oxide Variations within the New NEEM Greenland Ice Core during the Last Glacial Period

Miteva, V., Sowers, T., Schüpbach, S., Fischer, H. & Brenchley, J., Sep 13 2016, In : Geomicrobiology Journal. 33, 8, p. 647-660 14 p.

Research output: Contribution to journalArticle

The WAIS Divide deep ice core WD2014 chronology - Part 2: Annual-layer counting (0-31 ka BP)

Sigl, M., Fudge, T. J., Winstrup, M., Cole-Dai, J., Ferris, D., McConnell, J. R., Taylor, K. C., Welten, K. C., Woodruff, T. E., Adolphi, F., Bisiaux, M., Brook, E. J., Buizert, C., Caffee, M. W., Dunbar, N. W., Edwards, R., Geng, L., Iverson, N., Koffman, B., Layman, L. & 7 others, Maselli, O. J., McGwire, K., Muscheler, R., Nishiizumi, K., Pasteris, D. R., Rhodes, R. H. & Sowers, T. A., Mar 30 2016, In : Climate of the Past. 12, 3, p. 769-786 18 p.

Research output: Contribution to journalArticle

Precise interpolar phasing of abrupt climate change during the last ice age

Buizert, C., Adrian, B., Ahn, J., Albert, M., Alley, R. B., Baggenstos, D., Bauska, T. K., Bay, R. C., Bencivengo, B. B., Bentley, C. R., Brook, E. J., Chellman, N. J., Clow, G. D., Cole-Dai, J., Conway, H., Cravens, E., Cuffey, K. M., Dunbar, N. W., Edwards, J. S., Fegyveresi, J. M. & 58 others, Ferris, D. G., Fitzpatrick, J. J., Fudge, T. J., Gibson, C. J., Gkinis, V., Goetz, J. J., Gregory, S., Hargreaves, G. M., Iverson, N., Johnson, J. A., Jones, T. R., Kalk, M. L., Kippenhan, M. J., Koffman, B. G., Kreutz, K., Kuhl, T. W., Lebar, D. A., Lee, J. E., Marcott, S. A., Markle, B. R., Maselli, O. J., McConnell, J. R., McGwire, K. C., Mitchell, L. E., Mortensen, N. B., Neff, P. D., Nishiizumi, K., Nunn, R. M., Orsi, A. J., Pasteris, D. R., Pedro, J. B., Pettit, E. C., Price, P. B., Priscu, J. C., Rhodes, R. H., Rosen, J. L., Schauer, A. J., Schoenemann, S. W., Sendelbach, P. J., Severinghaus, J. P., Shturmakov, A. J., Sigl, M., Slawny, K. R., Souney, J. M., Sowers, T. A., Spencer, M. K., Steig, E. J., Taylor, K. C., Twickler, M. S., Vaughn, B. H., Voigt, D. E., Waddington, E. D., Welten, K. C., Wendricks, A. W., White, J. W. C., Winstrup, M., Wong, G. J. & Woodruff, T. E., Apr 30 2015, In : Nature. 520, 7549, p. 661-665 5 p.

Research output: Contribution to journalArticle

The WAIS Divide deep ice core WD2014 chronology – Part 1: Methane synchronization (68-31 ka BP) and the gas age-ice age difference

Buizert, C., Cuffey, K. M., Severinghaus, J. P., Baggenstos, D., Fudge, T. J., Steig, E. J., Markle, B. R., Winstrup, M., Rhodes, R. H., Brook, E. J., Sowers, T. A., Clow, G. D., Cheng, H., Edwards, R. L., Sigl, M., McConnell, J. R. & Taylor, K. C., Feb 5 2015, In : Climate of the Past. 11, 2, p. 153-173 21 p.

Research output: Contribution to journalArticle