* = Student, ** = Middlebury undergraduate
In Progress
Jacobel, A.W., Costa, K.M., and Marchitto, T. Evolution of Carbonate Chemistry over the Last Glacial Cycle: 175 kyr of B/Ca-derived CO₃²⁻ from the deep Pacific Ocean. In prep for Global Biogeochemical Cycles.
*S. Conde, K.M. Costa, A. V. Subhas, and A.W. Jacobel. Microfossil Abundances Constrain CaCO₃ Dissolution in the Equatorial Pacific at the Last Glacial Maximum and Late Holocene. Submitted to Paleoceanography and Paleoclimatology.
Publications
[25] Jacobel, A.W., Costa, K.M., Lynch-Stieglitz, J., and Marchitto, T. Deep Pacific Carbonate Chemistry since the Last Glacial Maximum. Quaternary Science Reviews 370, 109656, (2025). doi:10.1016/j.quascirev.2025.109656 (pdf)
[24] Jacobel, A.W., *Pallone, C., Costa, K., Anderson, R.F. and McManus, J.F. Orbital Influences on Deep Ocean Oxygen Concentrations and Respired Carbon Storage. Global Biogeochemical Cycles 39, e2025GB008503, (2025). doi:10.1029/2025GB008503
[23] Jacobel, A.W., Costa, K.M., **Applebaum, L.M., and *Conde, S. New Controls on Sedimentation and Climate in the Central Equatorial Pacific. Geochronology 7, 123–138, (2025). doi: 10.5194/gchron-7-123-2025
[22] *Pallone, C.T., McManus, J.F., and Jacobel, A.W. Eastern Equatorial Pacific Paleo-Productivity and Carbon Cycling During the Late Pleistocene. Earth and Planetary Science Letters 656, 119255 (2025). doi:10.1016/j.epsl.2025.119255
[21] Hoogakker, B., Davis, C., Wang, Y., Kusch, S., Nilsson-Kerr, K., Hardisty, D., Jacobel, A.W., et al. Reviews and syntheses: Review of proxies for low-oxygen paleoceanographic reconstructions. Biogeosciences 22, 863–957, (2025). doi: 10.5194/bg-22-863-2025 (pdf)
[20] Thirumalai, K., DiNezio, P., Partin, J., Liu, Z., Costa, K.M., and Jacobel, A.W. Future increase in extreme El Niño supported by past glacial changes. Nature 634, 374-380, (2024). doi: 10.1038/s41586-024-07984-y
[19] Costa, K., Nielsen, S.G., Wang, Y., Lu, W., Hines, S., Jacobel, A.W., and Oppo, D.W. Marine sedimentary uranium to barium ratios as a potential quantitative proxy for Pleistocene bottom water oxygen concentrations. Geochimica et Cosmochimica Acta 343, 1-16, (2023). doi: 10.1016/j.gca.2022.12.022 (pdf)
[18] **Pucker, I.R., McCauley, M., Fox, K., and Jacobel, A.W. Residents of Hawai’i’s Climate Decisions to Remain or Migrate. Ecopsychology, 15(1), 56-68 (2023). doi: 10.1089/eco.2022.0027
[17] *Zhou, Y., McManus, J., Jacobel, A.W., Costa, K., Wang, S., and *Alvarez Caraveo, B. Enhanced iceberg discharge in the western North Atlantic during all Heinrich events of the last glaciation. Earth and Planetary Science Letters, 564, 116910 (2021). doi: 10.1016/j.epsl.2021.116910 (pdf)
[16] Hayes et al., Global Ocean Sediment Composition and Burial Flux in the Deep Sea. Global Biogeochemical Cycles, 35, e2020GB006769 (2021). doi: 10.1029/2020GB006769 (open access)
[15] Jacobel, A.W., Anderson, R.F., Jaccard, S., McManus, J.F., *Pavia, F., and Winckler, G. Deep Pacific Storage of Respired Carbon during the Last Ice Age: Perspectives from bottom water oxygen reconstructions. Quaternary Science Reviews, 230, 106065 (2020). doi 10.1016/j.quascirev.2019.106065 (pdf)
[14] Costa, K.M., Hayes, C.M., Anderson, R.F., *Pavia, F.J., Bausch, A., Deng, F., Dutay, J., Geibert, W., Heinze, C., Henderson, G., Hillaire-Marcel, C., Hoffmann, S., Jaccard, S.L., Jacobel, A.W., et al. Global Synthesis of ²³⁰Th Normalization: New insights on an essential tool for quantifying sedimentary fluxes in the modern and Quaternary ocean. Paleoceanography and Paleoclimatology, 35, e2019PA003820 (2020). doi: 10.1029/2019PA003820
[13] Jacobel, A.W., Anderson, R.F., Hoogakker, B.A., Jaccard, S. Ice Age Storage of Respired Carbon in the Pacific Ocean. Past Global Changes Magazine 27(2), 52-53 (2019). doi: 10.22498/pages.27.2.52 (pdf)
[12] Jacobel, A.W., Anderson, R.F., Winckler, G., Costa, K.M., Gottschalk, J., Middleton, J.L., Pavia, F.J., Shoenfelt, E.M. and Zhou, Y. No evidence for equatorial Pacific dust fertilisation. Nature Geoscience, 12, 54–155 (2019). doi: 10.1038/s41561-019-0304-z (pdf)
[11] Reimi, M.A., Marcantonio, F., Lynch-Stieglitz, J., Jacobel, A.W., McManus, J.F. and Winckler, G. The Penultimate Glacial Termination and Variability of the Pacific Intertropical Convergence Zone. Geophysical Research Letters, 46 (2019). doi: 10.1029/2018GL081403 (pdf)
[10] Hendry, K., Huvenne, V., Robinson, L., Annett, A., Badger, M., Jacobel, A.W. et al. The biogeochemical impact of glacial meltwater from Southwest Greenland. Progress in Oceanography, 176 (2019). doi: 10.1016/j.pocean.2019.102126 (pdf)
[9] Ng, H.C., Robinson, L., McManus, J.F., Mohamed, K.J., Jacobel, A.W., Ivanovic, R.F., Gregoire, L.J., and Chen, T. Coherent deglacial changes in western Atlantic Ocean circulation. Nature Communications, 9, 2947 (2018). doi: 10.1038/s41467-018-05312-3 (pdf)
[8] Jacobel, A.W., McManus, J.F., Anderson R.F. and Winckler, G. Repeated storage of respired carbon in the equatorial Pacific Ocean over the last three glacial cycles. Nature Communications, 8, 1727 (2017). doi: 10.1038/s41467-017-01938-x (pdf)
News piece motivating our work by Medill journalism student Tiffany Chen
[7] Jacobel, A.W., McManus, J.F., Anderson R.F. and Winckler, G. Climate-related response of dust flux to the central equatorial Pacific over the past 150 kyr. Earth and Planetary Science Letters, 457 (2017). doi: 10.1016/j.epsl.2016.09.042 (pdf)
[6] Costa, K.M., Jacobel, A.W., McManus, J.F., Anderson, R.F., Winckler G., and Thiagarajan, N. Productivity patterns in the equatorial Pacific over the last 30,000 years. Global Biogeochemical Cycles 31, 850–865 (2017). doi: 10.1002/2016GB005579 (pdf)
[5] Capron, E., Vázquez Riveiros, N., He, F., Jacobel, A.W., and Zhang, X. Spatial pattern and temporal evolution of glacial terminations over the last 800 ka. Past Global Changes Magazine 25(2), 118 (2017). doi: 10.22498/pages.25.2.118 (pdf)
[4] Hillaire-Marcel, C., Ghaleb, B., de Vernal, A., Maccali, J., Cuny, K., Jacobel, A.W., Le Duc, C., and McManus, J. A New Chronology of Late Quaternary Sequences From the Central Arctic Ocean Based on “Extinction Ages” of Their Excesses in 231Pa and 230Th. Geochemistry, Geophysics, Geosystems, 18(12), 4573–4585 (2017). doi: 10.1002/2017GC007050 (pdf)
[3] Jacobel, A.W., McManus, J.F., Anderson R.F. and Winckler, G. Large Deglacial Shifts of the Pacific Intertropical Convergence Zone. Nature Communications, 7, 10449 (2016). doi:10.1038/ncomms10449 (pdf)
Press release by Lamont's Stacy Morford
[2] Lyle, M., Pockalny, R., Polissar, P., Lynch-Stieglitz, J., Bova, S., Ford, H., Hertzberg, J., Hovan, S., Jacobel, A.W., et al. Dynamic carbonate sedimentation on the Northern Line Islands Ridge, Palmyra Basin. Marine Geology, 379 (2016). doi: 10.1016/j.margeo.2016.06.005 (pdf)
[1] Lynch-Stieglitz, J., Polissar, P.J., Jacobel, A.W., et al., Glacial-Interglacial Changes in Central Tropical Pacific Surface Seawater Property Gradients. Paleoceanography, 30 (2015). doi:10.1002/2014PA002746 (pdf)
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