Description:

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. 

Research Interests:

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. 

Courses:

Advanced Instrumental Analysis (CHMY 421) Lab Manual

Old 421 Exams and Quizzes

Selected Publications:

Harris, K.E., M.D. DeGrandpre, and B. Hales (2013).  Aragonite saturation states in a coastal upwelling zone, submitted to Geophysical Research Letters.

Gray, S.E., DeGrandpre, M.D., Langdon, C., and J.E. Corredor. (2012). Short-term and seasonal pH, pCO2 and saturation state variability in a coral-reef ecosystem, Global Biogeochem. Cycles, 26, GB3012, doi:10.1029/2011GB004114.

DeGrandpre, M.D., Martz, T.R., Hart, R.D., Elison, D.M., Zhang, A. and A. Bahnson (2011).  Universal tracer monitored titrations, Anal. Chem., doi:10.1021/ac2025656.

Cullison, S.E., DeGrandpre, M.D., Moore, T.M., Martz, T.R., Friederich, G.E., and K.S. Johnson (2011). Applications of in situ pH measurements for inorganic carbon calculations, Mar. Chem., 125, 82–90.

Moore, T.S., DeGrandpre, M.D., Sabine, C.L., Zappa, C.J., McGillis, W.R., Feely, R.A., Hamme, R.C. and W.M. Drennan (2011). Sea surface pCO₂ and O₂ in the Southern Ocean during the austral fall, 2008, J. Geophys. Res.- Oceans, 116, C00F11, doi:10.1029/2010JC006560.

Lynch, J.K., Beatty, C.M., Seidel, M.P., Jungst, L.J. and M.D. DeGrandpre. (2010). Controls of riverine CO₂ over an annual cycle determined using direct, high temporal resolution pCO₂ measurements, J. Geophys. Res.- Biogeosciences, 115, G03016, doi:10.1029/2009JG001132.

Martz, T.M., DeGrandpre, M.D., Strutton, P.G., McGillis, W.R. and W. Drennan. (2009). Sea surface pCO₂ and carbon export during the Labrador Sea spring-summer bloom: an in situ mass balance approach, J. Geophys. Res. - Oceans, 114, C09008, doi:10.1029/2008JC005060.

Seidel, M.P., DeGrandpre, M.D. and A.G. Dickson. (2008). A sensor for in situ indicator-based measurements of seawater pH, Mar. Chem., 109, 18–28.

For a full list of publications, please view DeGrandpre Publications