Research

Broadly, my interests are in physical oceanography and biogeochemistry. I use statistical methods paired with models, observations, and theory to gain dynamical information about the upper and coastal ocean.


Convergence Zones & Surface Drifter Statistics

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  • Drifters are often entrained into fronts or remain in long-lived eddies for extended periods of time.
  • These drifter trapping features prevent the floats from adequately sampling the entire domain.
  • I am interested in quantifying statistical biases due to this sampling pattern.
  • See a series of webinar presentations about GoMRI efforts in the Gulf of Mexico here.


Publications: 

Pearson, J., Fox-Kemper, B., Barkan, R., Choi, J., Bracco, A., & McWilliams, J. (2019). Impacts of convergence on structure functions from surface drifters in the Gulf of Mexico. Journal of Physical Oceanography, 49, 675-690 [DOI]

Pearson, J., Fox-Kemper, B., Pearson, B., Chang, H., Huntley, H., Haus, B., Horstmann, J., Huntley, H., Kirwan, D. A., Jr., Poje, A., (In Prep). Observed biases in surface drifter statistics in the Gulf of Mexico.

Chang, H., Huntley, H., Kirwan, D., Jr., Carlson, D., Mensa, J., Mehta, S., Novelli, G., Ozgokomen, T., Fox-Kemper,B., Pearson, B.,Pearson, J., Harcourt, R.(In Revision in JPO). Small-scale dispersion observations in the presence of Langmuir circulation.



Structure Function & Spectral Theory

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Figure courtesy of svs.gsfc.nasa.gov

  • Upper ocean statistics are powerful metrics useful for classifying turbulent regimes.
  • I develop structure function and spectral theories for anisotropic turbulence as well as reactive tracers.

Publications: 

Pearson, B., Pearson, J., Fox-Kemper, B., (In Revision in PRF). Relation Between Structure Functions and Cascade Rates in Anisotropic Two-Dimensional Turbulence.

Pearson, B., Pearson, J., Fox-Kemper, B., (In Prep). Structure Functions in Quasigeostrophic Turbulence.

Pearson, J., Fox-Kemper, B.,(In Prep). Spectral representation of passive-reactive tracers in geophysical flows

Pearson, J., Fox-Kemper, B., (In Prep). Blended Second and Third Order Structure function laws for passive-reactive tracers in geophysical flows.

 


Eulerian & Lagrangian Data Assimilation

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Figure courtesy of transportation.gov

I incorporate both Eulerian and Lagrangian traffic flow observations using data assimilation schemes to improve macroscopic traffic models and estimate difficult parameters to observe.

Publications: 

Xia, C., Cochrane, C., DeGuire, J., Fan, G., Holmes, E., McGuirl, M., Murphy, P., Palmer, J., Carter, P., Slivinski, L., & Sandstede, B. (2017). Assimilating Eulerian and Lagrangian data in traffic-flow models. Physica D: Nonlinear Phenomena, 346, 59-72.
https://doi.org/10.1016/j.physd.2017.02.004