Matthew Schmidt

Ph.D. in Geology, University of California, Davis, (2005)

M.Sc. in Geology, University of South Florida, (1997)

B.S. in Geology, Vanderbilt University, (1993)

Expertise

Research Interests

Reconstructing millennial-scale climate change
Trace elements in foraminiferal calcite
ENSO dynamics over the past 20,000 years
Productivity changes in the Eastern Equatorial Pacific since the last Ice Age

Articles

Core-top Constraints on the Ecology and Paleothermometry of Planktic Foraminifera in the Indian Ocean.

Glaubke, R., Sikes, E. L.., Sosdian, S. M.., Umling, N. E.., Starr, A., Moffa-Sanchez, P. L.. and Schmidt, M. (2025). Elevated shallow water salinity in the deglacial Indian Ocean was sourced from the deep. Nature Geoscience 18 (9) , pp. 893-900.

Schimmenti, D. E.., Marcantonio, F., Roxana Sierra-Hernández, M. and Schmidt, M. (2025). Millennial pulses of African dust and ITCZ shifts in the Eastern Equatorial Pacific. Nature Communications 16 (1).

Glaubke, R., Schmidt, M., Hertzberg, J. E.., Ward, L. G.., Marcantonio, F., Schimmenti, D. and Thirumalai, K. (2024). An Inconsistent ENSO Response to Northern Hemisphere Stadials Over the Last Deglaciation. Geophysical Research Letters 51 (12).

Lippold, J., Gottschalk, J., Lynch-Stieglitz, J., Schmidt, M., Szidat, S. and Bahr, A. (2023). SYSTEMATIC ANALYSES OF RADIOCARBON AGES OF COEXISTING PLANKTONIC FORAMINIFERA. Radiocarbon 65 (4) , pp. 876-898.

Watkins, C. S.., Schmidt, M. and Hertzberg, J. E.. (2021). Calibrating Trilobatus sacculifer Na/Ca Ratios From Atlantic Core‐Tops as a Proxy for Sea Surface Salinity. Paleoceanography and Paleoclimatology 36 (10).

Monteagudo, M. Moriah., Lynch‐Stieglitz, J., Marchitto, T. M.. and Schmidt, M. (2021). Central Equatorial Pacific Cooling During the Last Glacial Maximum. Geophysical Research Letters 48 (3).

Bahr, A., Hoffmann, J., Schönfeld, J., Schmidt, M., Nürnberg, D., Batenburg, S. J. and Voigt, S. (2018). Low-latitude expressions of high-latitude forcing during heinrich stadial 1 and the younger dryas in northern south america. Global and Planetary Change 160 , pp. 1-9.

Schmidt, M., Ping, C., Parker, A. O., Ji, L. and He, F. (2017). Deglacial Tropical Atlantic subsurface warming links ocean circulation variability to the West African Monsoon. Scientific Reports 7 (15390) , pp. 1-6.

Loveley, M. R., Marcantonio, F., Lyle, M., Ibrahim, R., Heltzberg, J. E. and Schmidt, M. (2017). Sediment redistribution and grainsize effects on 230Th-normalized mass accumulation rates and focusing factors in the Panama Basin. Earth & Planetary Science Letters 480 , pp. 107-120.

Loveley, M. R., Marcantonio, F., Wisler, M. M., Hertzberg, J. E., Schmiodt, M. W. and Lyle, M. (2017). Millennial-scale iron fertilization of the eastern equatorial Pacific over the past 100,000 years. Nature Geoscience 10 , pp. 760-764.

Parker, A. O., Schmidt, M. and Slowey, N. C. (2016). A New Perspective on West African Hydroclimate During the Last Deglaciation. Earth and Planetary Science Letters 449 , pp. 79-88.

Hertzberg, J. E., Schmidt, M., Smith, R. K ., Shields, M. R., Bianchi, T. S. and Marcantonio, F. (2016). Comparison of eastern tropical Pacific TEX86 and Globigerinoides ruber Mg/Ca derived sea surface temperatures: Insights from the Holocene and Last Glacial Maximum. Earth and Planetary Science Letters 434 , pp. 320-332.

Parker, A. O., Schmidt, M. W. and Chang, P. (2015). Tropical North Atlantic Subsurface Warming Events as a Fingerprint for AMOC Variability During Marine Isotope Stage 3. Paleoceanography 30 , pp. 1-12.

Them, T. R., Schmidt, M. and Lynch-Stieglitz, J. (2015). Millennial-scale Atmospheric and Ocean Circulation Change from the Last Glacial Maximum and Marine Isotope Stage 3. Earth and Planetary Science Letters 427 , pp. 47-56.

Lynch-Stieglitz, J., Schmidt, M., Henry, L. Gene., Curry, W. B., Skinner, L. C., Mulitza, S., Zhang, R. and Chang, P. (2014). Muted change in Atlantic overturning circulation over some glacial-aged Heinrich events. Nature Geoscience 7 , pp. 144-150.

Xie, R., Marcantonio, F. and Schmidt, M. (2014). Reconstruction of intermediate water circulation in the tropical North Atlantic during the past 22,000 years. Geochimica et Cosmochimica Acta 140 , pp. 455-467.

Hertzberg, J. E. and Schmidt, M. (2013). Refining i> Globigerinoides ruber Mg/Ca paleothermometry in the Atlantic Ocean. Earth and Planetary Science Letters 383 , pp. 123–133.

Xie, R. C., Marcantonio, F. and Schmidt, M. (2012). Deglacial variability of Antarctic Intermediate Water penetration into the North Atlantic from authigenic neodymium isotope ratios. Paleoceanography 27 (3).

Schmidt, M., Chang, P., Hertzberg, J. E., Them, T. R., Ji, L. and Otto-Bliesner, B. L. (2012). Impact of abrupt deglacial climate change on tropical Atlantic subsurface temperatures. Proceedings of the National Academy of Sciences 109 (36) , pp. 14348–14352.

Schmidt, M., Weinlein, W. A., Marcantonio, F. and Lynch-Stieglitz, J. (2012). Solar forcing of Florida Straits surface salinity during the early Holocene. Paleoceanography 27 (3).

Schmidt, M. and Hertzberg, J. (2011). Abrupt climate change during the last ice age. Nature Education Knowledge 3 (10) , pp. 11.

Lynch-Stieglitz, J., Schmidt, M. and Curry, W. B. (2011). Evidence from the Florida Straits for Younger Dryas ocean circulation changes. Paleoceanography 26 (1).

Schmidt, M. and Lynch-Stieglitz, J. (2011). Florida Straits deglacial temperature and salinity change: Implications for tropical hydrologic cycle variability during the Younger Dryas. Paleoceanography 26 (4).

Schmidt, M. and Spero, H. J. (2011). Meridional shifts in the marine ITCZ and the tropical hydrologic cycle over the last three glacial cycles. Paleoceanography 26 (1).

Wan, X., Chang, P. and Schmidt, M. (2010). Causes of tropical Atlantic paleo-salinity variation during periods of reduced AMOC. Geophysical Research Letters 37 (4).

Cléroux, C., Lynch-Stieglitz, J., Schmidt, M., Cortijo, E. and Duplessy, J. (2009). Evidence for calcification depth change of i> G i> loborotalia i> truncatulinoides between deglaciation and Holocene in the Western Atlantic Ocean. Marine Micropaleontology 73 (1) , pp. 57–61.

Wan, X., Chang, P., Saravanan, R., Zhang, R. and Schmidt, M. (2009). On the interpretation of Caribbean paleo-temperature reconstructions during the Younger Dryas. Geophysical Research Letters 36 (2).

Nürnberg, D., Ziegler, M., Karas, C., Tiedemann, R. and Schmidt, M. (2008). Interacting Loop Current variability and Mississippi River discharge over the past 400 kyr. Earth and Planetary Science Letters 272 (1) , pp. 278–289.

Schmidt, M., Vautravers, M. J. and Spero, H. J. (2006). Rapid subtropical North Atlantic salinity oscillations across Dansgaard–Oeschger cycles. Nature 443 (7111) , pp. 561–564.

Schmidt, M., Vautravers, M. J. and Spero, H. J. (2006). Western Caribbean sea surface temperatures during the late Quaternary. Geochemistry, Geophysics, Geosystems 7 (2).

Schmidt, M., Spero, H. J. and Lea, D. W. (2004). Links between salinity variation in the Caribbean and North Atlantic thermohaline circulation. Nature 428 (6979) , pp. 160–163.

Book Chapters

Hertzberg, J. E . and Schmidt, M. (2017). Paleotemperatures Encyclopedia of Geochemistry, Earth Science Series (pp. 8) Springer International Publishing.

Presentations

Loveley, M., Marcantonio, F. and Schmidt, M. (December 15, 2016). Millennial-scale Iron Fertilization of the Eastern Equatorial Pacific over the last 100 kyr Poster Fall American Geophysical Union Meeting San Francisco.

Glaubke, R. and Schmidt, M. (December 15, 2016). Tropical North Atlantic Subsurface Temperatures: A Proxy for AMOC Variability Poster Fall American Geophysical Union Meeting San Francisco.

Schmidt, M., Parker, A. O. and Chang, P. (September 2, 2016). Tropical Atlantic subsurface warming links ocean circulation change to West African Monsoon Poster International Conference of Paleoceanography Utrecht, NE.

Schmidt, M. W., Parker, A. O. and Chang, P. (December , 2015). Millennial-Scale Subsurface Temperature Change in the Niger Delta Linked to AMOC Variability During the Last Deglacial Oral Presentation American Geophysical Union Fall Meeting San Francisco.

Hertzberg, J. E. and Schmidt, M. W. (December , 2015). Multi-species temperature and proxy reconstructions of the tropical Pacific mean state across Marine Isotope Stage 3 Oral Presentation American Geophysical Union Fall Meeting San Francisco.