Ren, H.A., D.M. Sigman, M.-T. Chen, and S.-J. Kao. 2012. “Elevated Foraminifera-Bound Nitrogen Isotopic Composition During the Last Ice Age in the South China Sea and Its Global and Regional Implications”. Global Biogeochemical Cycles 26. doi:10.1029/2010GB004020.

Studer, A.S., A. Martínez-García, S.L. Jaccard, F.E. Girault, D.M. Sigman, and G.H. Haug. 2012. “Enhanced Stratification and Seasonality in the Subarctic Pacific Upon Northern Hemisphere Glaciation-New Evidence from Diatom-Bound Nitrogen Isotopes, Alkenones and Archaeal Tetraethers”. Earth and Planetary Science Letters 351-352: 84-94. doi:10.1016/j.epsl.2012.07.029.

Meckler, A.N., H.A. Ren, D.M. Sigman, N. Gruber, B. Plessen, C.J. Schubert, and G.H. Haug. 2011. “Deglacial Nitrogen Isotope Changes in the Gulf of Mexico: Evidence from Bulk Sedimentary and Foraminifera-Bound Nitrogen in Orca Basin Sediments”. Paleoceanography 26. Blackwell Publishing Ltd. doi:10.1029/2011PA002156.

Martínez-García, A., A. Rosell-Mele, S.L. Jaccard, W. Geibert, D.M. Sigman, and G.H. Haug. 2011. “Southern Ocean Dust-Climate Coupling over the past Four Million Years”. Nature 476. Nature Publishing Group: 312-15. doi:10.1038/nature10310.

Jaccard, S.L., E.D. Galbraith, D.M. Sigman, and G.H. Haug. 2010. “A Pervasive Link Between Antarctic Ice Core and Subarctic Pacific Sediment Records over the past 800 Kyrs”. Quaternary Science Reviews 29: 206-12. doi:10.1016/j.quascirev.2009.10.007.

Brunelle, B.G., D.M. Sigman, S.L. Jaccard, L.D. Keigwin, B. Plessen, G. Schettler, M.S. Cook, and G.H. Haug. 2010. “Glacial/Interglacial/Changes/in/Nutrient/Supply/and/Stratification/in/the/Western/Subarctic/North/Pacific/since/the/Penultimate/Glacial/Maximum”. Quaternary Science Reviews 29: 2579-90. doi:10.1016/j.quascirev.2010.03.010.

Sigman, D.M., M.P. Hain, and G.H. Haug. 2010. “The Polar Ocean and Glacial Cycles in Atmospheric CO2 Concentration”. Nature 466: 47-55. doi:10.1038/nature09149.

Haug, G.H., and D.M. Sigman. 2009. “Palaeoceanography: Polar Twins”. Nature Geoscience 2. Nature Publishing Group: 91-92. doi:10.1038/ngeo423.

Jaccard, S.L., E.D. Galbraith, D.M. Sigman, G.H. Haug, R. François, T.F. Pedersen, P. Dulski, and H.R. Thierstein. 2009. “Subarctic Pacific Evidence for a Glacial Deepening of the Oceanic Respired Carbon Pool”. Earth and Planetary Science Letters 277: 156-65. doi:10.1016/j.epsl.2008.10.017.

Ren, H.A., D.M. Sigman, A.N. Meckler, B. Plessen, R.S. Robinson, Y. Rosenthal, and G.H. Haug. 2009. “Foraminiferal Isotope Evidence of Reduced Nitrogen Fixation in the Ice Age Atlantic Ocean”. Science 323: 244-48. doi:10.1126/science.1165787.