Steven Lohrenz

Dean & Professor

SMAST / Administration

508-910-6550

508-999-8197

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School for Marine Science & Technology East, New Bedford 203


Education

1978University of OregonB.A.
1985Massachusetts Institute of Technology/Woods Hole Oceanographic InstitutionPh.D

Teaching

  • Satellite Oceanography
  • Phytoplankton Ecology
  • Aquatic Optics

Teaching

Programs

Teaching

Courses

Provides an overview of the use of satellite-based remote sensing for making measurements within the marine environment. Each of the primary satellite sensors used by oceanographers is introduced along with the principles behind their operation, measurement retrieval, data handling, and data interpretation/usage. Emphasis is placed on physical and biogeochemical applications of satellite-based data, along with their analysis and advantages, rather than engineering and physical/optical theory of measurement. This course relies heavily on outside readings from the primary oceanographic literature to showcase satellite data analysis and specific applications of these data types. Included in the course are a series of student-led presentations and discussions of assigned class readings and a possible class project utilizing a satellite-derived data set and data processing techniques.

Provides an overview of the use of satellite-based remote sensing for making measurements within the marine environment. Each of the primary satellite sensors used by oceanographers is introduced along with the principles behind their operation, measurement retrieval, data handling, and data interpretation/usage. Emphasis is placed on physical and biogeochemical applications of satellite-based data, along with their analysis and advantages, rather than engineering and physical/optical theory of measurement. This course relies heavily on outside readings from the primary oceanographic literature to showcase satellite data analysis and specific applications of these data types. Included in the course are a series of student-led presentations and discussions of assigned class readings and a possible class project utilizing a satellite-derived data set and data processing techniques.

Seminar discussions and presentations based on research or detailed literature surveys.

Seminar discussions and presentations based on research or detailed literature surveys.

Research

Research Activities

  • PI, “An Integrated Terrestrial-Coastal Ocean Observation and Modeling Framework for Carbon Management Decision Support" (collaborative project with Auburn University, University of Delaware, and North Carolina State University) NASA, $1.2M over three years ($228K to UMass Dartmouth)
  • PI, “Research and Education in Quantitative Fisheries and Ecosystem Science,” NOAA (subaward through the Woods Hole Oceanographic Institution), $360K over three years
  • PI, " Collaborative Research: A RAPID response to Hurricane Harvey's impacts on coastal carbon cycle, metabolic balance and ocean acidification", (collaborative project with Univ. Delaware, Louisiana Universities Marine Consortium, and Dauphin Island Sea Lab), NSF, $34,232 over one year

Research

Research Interests

  • Biological distributions and productivity
  • Cycling of carbon and nutrients in coastal and ocean waters using ship-based measurements and optical and remotely sensed observations
  • Characterization of land-ocean interactions using coupled ecosystem models to assess impacts of climate and land use change
  • Optical assessment of air-sea carbon fluxes in river-dominated margins
  • Optical detection and assessment of harmful algal blooms

Select publications

Tian, H., R. Xu, S. Pan, Y. Yao, Z. Bian, W.-J. Cai, C. S. Hopkinson, D. Justic, S. Lohrenz, C. Lu, W. Ren, and J. Yang (2020).
Long-Term Trajectory of Nitrogen Loading and Delivery From Mississippi River Basin to the Gulf of Mexico
Global Biogeochemical Cycles, 34(5), abstract.

Fennel, K., S. Alin, L. Barbero, W. Evans, T. Bourgeois, S. Cooley, J. Dunne, R. A. Feely, J. M. Hernandez-Ayon, X. Hu, S. Lohrenz, F. Muller-Karger, R. Najjar, L. Robbins, E. Shadwick, S. Siedlecki, N. Steiner, A. Sutton, D. Turk, P. Vlahos, and Z. A. Wang (2019).
Carbon cycling in the North American coastal ocean: a synthesis
Biogeosciences, 16(6), abstract.

Lohrenz, S. E., W. J. Cai, S. Chakraborty, W. J. Huang, X. Guo, R. He, Z. Xue, K. Fennel, S. Howden, and H. Tia (2018).
Satellite estimation of coastal pCO2 and air-sea flux of carbon dioxide in the northern Gulf of Mexico
Remote Sensing of Environment, 207, 71-83.

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