Rafter, P.A., D.M. Sigman, C.D. Charles, J. Kaiser, and G.H. Haug. 2012. “Subsurface Tropical Pacific Nitrogen Isotopic Composition of Nitrate: Biogeochemical Signals and Their Transport”. Global Biogeochemical Cycles 26. doi:10.1029/2010GB003979.

Rafter, P.A., and D.M. Sigman. 2016. “Spatial Distribution and Temporal Variation of Nitrate Nitrogen and Oxygen Isotopes in the Upper Equatorial Pacific Ocean”. Limnology and Oceanography 61. Wiley Blackwell: 14-31. doi:10.1002/lno.10152.

Marconi, D., M.A. Weigand, P.A. Rafter, M.R. McIlvin, M. Forbes, K.L. Casciotti, and D.M. Sigman. 2014. “Nitrate Isotope Distributions on the US GEOTRACES North Atlantic Cross-Basin Section: Signals of Polar Nitrate Sources and Low Latitude Nitrogen Cycling”. Marine Chemistry 177. Elsevier B.V.: 143-56. doi:10.1016/j.marchem.2015.06.007.

Fripiat, F., D.M. Sigman, S.E. Fawcett, P.A. Rafter, M.A. Weigand, and J.-L. Tison. 2014. “New Insights into Sea Ice Nitrogen Biogeochemical Dynamics from the Nitrogen Isotopes”. Global Biogeochemical Cycles 28. American Geophysical Union: 115-30. doi:10.1002/2013GB004729.

Rafter, P.A., P.J. Difiore, and D.M. Sigman. 2013. “Coupled Nitrate Nitrogen and Oxygen Isotopes and Organic Matter Remineralization in the Southern and Pacific Oceans”. Journal of Geophysical Research: Oceans 118. Blackwell Publishing Ltd: 4781-94. doi:10.1002/jgrc.20316.

Fripiat, F., A. Martínez-García, D. Marconi, S.E. Fawcett, S.H. Kopf, V.H. Luu, P.A. Rafter, R. Zhang, D.M. Sigman, and G.H. Haug. 2021. “Nitrogen Isotopic Constraints on Nutrient Transport to the Upper Ocean”. Nature Geoscience 14. Nature Research: 855-61. doi:10.1038/s41561-021-00836-8.

Smart, S.M., H. Ren, S.E. Fawcett, R. Schiebel, M. Conte, P.A. Rafter, K.K. Ellis, M.A. Weigand, S. Oleynik, G.H. Haug, and D.M. Sigman. 2018. “Ground-Truthing the Planktic Foraminifer-Bound Nitrogen Isotope Paleo-Proxy in the Sargasso Sea”. Geochimica Et Cosmochimica Acta 235. Elsevier Ltd: 463-82. doi:10.1016/j.gca.2018.05.023.

Rafter, P.A., D.M. Sigman, and K.R.M. Mackey. 2017. “Erratum: Publisher Correction: Recycled Iron Fuels New Production in the Eastern Equatorial Pacific Ocean (Nature Communications (2017) 8 1 (1100))”. Nature Communications 8. NLM (Medline): 2018. doi:10.1038/s41467-017-02138-3.

Rafter, P.A., D.M. Sigman, and K.R.M. Mackey. 2017. “Recycled Iron Fuels New Production in the Eastern Equatorial Pacific Ocean”. Nature Communications 8. Nature Publishing Group. doi:10.1038/s41467-017-01219-7.

Marconi, D., D.M. Sigman, K.L. Casciotti, E.C. Campbell, Alexandra Weigand, S.E. Fawcett, A.N. Knapp, P.A. Rafter, B.B. Ward, and G.H. Haug. 2017. “Tropical Dominance of N2 Fixation in the North Atlantic Ocean”. Global Biogeochemical Cycles 31. Blackwell Publishing Ltd: 1608-23. doi:10.1002/2016GB005613.

Marconi, D., S. Kopf, P.A. Rafter, and D.M. Sigman. 2017. “Aerobic Respiration Along Isopycnals Leads to Overestimation of the Isotope Effect of Denitrification in the Ocean Water Column”. Geochimica Et Cosmochimica Acta 197. Elsevier Ltd: 417-32. doi:10.1016/j.gca.2016.10.012.