Faculty and Staff
Professor of Chemistry and BiochemistryOffice: Chemistry 318A
Mike DeGrandpre received his Ph.D. in Analytical Chemistry from the University of Washington in 1990. He carried out postdoctoral research at Woods Hole Oceanographic Institution in Massachusetts from 1990 to 1993 and held a research associate position there from 1993 through 1995. He joined the chemistry faculty at UM in January of 1996. Mike is an analytical/environmental chemist specializing in developing and using autonomous sensors to study aquatic biogeochemistry and the ocean carbon cycle.
My research focuses on the development of autonomous chemical sensors for applications in aquatic (marine and freshwater) chemistry. One of our primary goals is to further our understanding of CO2’s sources and sinks within the world's oceans. Our research has resulted in the development of autonomous CO2 and pH sensors (the Submersible Autonomous Moored Instruments or SAMIs). By deploying the SAMI sensors on ocean moorings and other unmanned platforms, we have determined to what extent processes such as photosynthesis and air-sea gas exchange control CO2 variability. These results will help develop models to predict the effects of global warming and ocean acidification (the decrease in ocean pH caused by anthropogenic CO2). Our recent field work has primarily focused on the processes that control CO2 in both freshwater (rivers and lakes) and marine environments. To date, SAMIs have been deployed in all ocean basins except the Indian Ocean.
Check out our NSF sponsored ocean acidification exhibit developed for UM's science museum spectrUM!
Islam, F., M. D. DeGrandpre, C. M. Beatty, M.-L. Timmermans, R. A. Krishfield, J. M. Toole, and S. R. Laney (2017), Sea surface pCO2 and O2 dynamics in the partially ice-covered Arctic Ocean, J. Geophys. Res. Oceans, 122, doi:10.1002/2016JC012162. Highlighted in the AGU newsletter EOS - https://eos.org/research-spotlights/how-arctic-ice-affects-gas-exchange-between-air-and-sea.
Lai, C-Z., DeGrandpre, M. D., Wasser, B., Brandon, T., Clucas, D., Jaqueth, E. J., Benson, Z., Beatty, C. M. and R. S. Spaulding (2016). Spectrophotometric measurement of freshwater pH with purified meta-cresol purple and phenol red, Limnol. Oceanogr. Methods, doi: 10.1002/lom3.10137.
Islam, F., DeGrandpre, M., Beatty, C., Krishfield, R., and J. Toole (2016). Gas exchange of CO2 and O2 in partially ice-covered regions of the Arctic Ocean investigated using in situ sensors, IOP Conf. Series: Earth and Environmental Science, 35, doi:10.1088/1755-1315/35/1/012018.
Ballantyne, A.P., Andres, R., Houghton, R., Stocker, B.D., Wanninkhof, R., Anderegg, W. Cooper, L.A., DeGrandpre, M.D., Tans, P.P., Miller, J.C., Alden, C. and J.W.C. White (2015). Audit of the global carbon budget: estimate errors and their impact on uptake uncertainty, Biogeosciences, 12, 2565–2584.
Evans, W., Mathis, J.T., Cross, J.N., Bates, N.R., Frey, K.E., Else, B.G.T., Papkyriakou, T.N., DeGrandpre, M.D., Islam, F., Cai, W.-J., Chen, B., Yamamoto-Kawai, M., Miller, L.A., Carmack, E., Williams, W.J. and T. Takahashi (2015). Sea-air CO2 exchange in the western Arctic coastal ocean, Global Biogeochem. Cycles, 10.1002/2015GB005153.
DeGrandpre, M.D., Spaulding, R.S., Newton, J., Jaqueth, E., Hamblock, S., Umansky, A., and K.E. Harris. (2014). Considerations for the measurement of spectrophotometric pH for ocean acidification and other studies, Limnol. Oceanog. Methods, 12, 830–839.
Spaulding, R.S., DeGrandpre, M.D., Beck, J.C., Hart, R.D., Peterson, B., DeCarlo, E.H., Drupp, P.S. and T.R. Hammar. (2014). Autonomous in situ measurements of seawater alkalinity, Env. Sci. Technol., 48, 9573–9581, DOI: 10.1021/es501615x.
Harris, K.E., DeGrandpre, M.D. and B. Hales (2013). Aragonite saturation state dynamics in a coastal upwelling zone, Geophys. Res. Lett., 40, doi:10.1002/grl.50460.
For a full list of publications, please view DeGrandpre Publications