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Dr Robert Smith

Robert SmithContact

Office 310 Castle Street, room 150
Tel +64 3 479 5365
Email robert.smith@otago.ac.nz

Academic qualifications

PhD, University of Otago, 2018
BSc(Hons), University of Southampton, 2007

Research interests

  • Mesoscale ocean dynamics (including oceanic fronts, shelf / slope exchange processes and boundary currents)
  • Flow-topography interactions (particularly at the shelf-break and around submarine canyons)
  • Variability and drivers of upper-ocean temperatures and extremes, including marine heatwaves
  • Regional oceanography of the western South Pacific
  • Observational Physical Oceanography

Google Scholar: Robert Owain Smith

Rob is a physical oceanographer interested in meso- and submesoscale (1-100 km) ocean processes. His research currently focuses on oceanic front dynamics, shelf-slope exchange processes and marine heatwaves around the New Zealand coastline. He uses a combination of in-situ observations (ships, drifters and moored instruments) and satellite remote-sensing to address questions related to his research.

Rob lectures in the Department of Marine Science. During his PhD at the University of Otago, he investigated the roles of bathymetry and wind forcing in controlling the physical characteristics of the Subtropical Frontal Zone in the Tasman Seas.

Current research

Marine heatwaves around New Zealand

Marine heatwaves (MHWs) are extended periods of time when ocean temperatures are extremely warm. They are now recognised as having significant impacts on marine ecosystems, communities and industry.

New Zealand recently experienced an unprecedented combined ocean-atmosphere heatwave, with wide-ranging effects on terrestrial and marine systems [Salinger et al., 2019].

We’re interested in better understanding marine heatwaves around New Zealand, particularly their physical characteristics and drivers.

We’re also interested in identifying areas where local oceanographic variability (e.g. tidal mixing, internal wave activity and localised upwelling) may create refugia from these extreme events.

Visit the Marine Heatwaves website

Current PhD position available

We currently have a fully funded PhD position available through the Moana Project to identify historic marine heatwaves around New Zealand and to investigate the environmental factors causing them. Please get in touch with me if you’re interested in this position.

Visit the Moana Project website

Shelf-slope exchange at the Southland Front, New Zealand

Physical exchanges between continental shelf and offshore water masses can strongly influence the marine physics, chemistry and biology surrounding continental shelf breaks.

We are interested in better understanding what processes lead to shelf / slope exchanges between New Zealand’s shelf and subantarctic water masses, and what factors (including freshwater inputs, wind, stratification, boundary currents and submarine canyon topography) are most important for driving these exchanges.

We’re also interested in identifying the impact of shelf / ocean exchanges on shelf and offshore biogeochemistry.

Variability and dynamics of oceanic fronts

Fronts in the ocean are important dynamic boundaries that separate different water masses. They have been recognised to modulate air-sea interaction, enhance biological activity and can act as foraging hotspots for marine predators. Using ocean observations and model data, our aim is to better understand the factors and processes driving the dynamics of fronts in the open-ocean and coastal seas.

We’re also interested in the biogeochemical responses to oceanic fronts and the role that physical processes play in these.

Prospective students

I am always interested in hearing from prospective students.

If you'd like to join us in the Department of Marine Science please get in touch with me.

Potential topics for postgraduate research supervision

  • The identification of potential marine climate change refugia around New Zealand from Himawari-8 satellite data
  • Tidal pumping and shelf-break nutrient enrichment near the Otago and/or Kaikoura submarine canyon systems
  • The role of tidal and non-tidal processes in creating an ‘island mixing front’ around the Chatham Islands, New Zealand
  • Local-scale oceanographic variability along the coastline of Otago, New Zealand: Identification and causes

Current students

Tim Baxter, MSc: The influence of tidal and non-tidal processes on a cold-water pool surrounding the Three Kings Island’s, New Zealand. With Dr Ata Suanda (University of Otago).

Sebastian Clar, PhD: 3D and Time-Lapse Imaging of Mixing Processes at Water Mass Boundaries off New Zealand. With Professor Andrew Gorman and Dr Christina Riesselman (University of Otago).

David Johnston, PhD: Sentinels of the Southern Ocean: Southern Right Whales (Eubalaena australis) as indicators of oceanic productivity. With Professor Steve Dawson and Dr Will Rayment (University of Otago).

Erik Johnson, PhD: Physical Properties and Processes in New Zealand’s Dynamical Subtropical Front. With Professor Steve Wing and Dr Ata Suanda (University of Otago).

Emma Harte, MSc: The influence of oceanographic controls on dispersal of the Patagonian toothfish on the Falkland Island Plateau. With Professor Gary Wilson (University of Otago).

Completions

Tim Baxter, PGDipSci in Marine Science: Topographic Upwelling at the Three Kings Islands, New Zealand. Tim is now an MSc candidate at the University of Otago, New Zealand).

Mitchell Chandler, BSc(Hons) in Geophysics: Tracing the 'Tasman Leakage': Flow in the boundary current off Fiordland. With Dr Melissa Bowen (University of Auckland). Mitchell is now a PhD candidate at Scripps Institution of Oceanography, USA.

Teaching

  • EAOS 111 Earth and Ocean Science
  • MARI 112 Global Marine Systems
  • OCEN 201 Physical Oceanography (Coordinator)
  • MARI 301 Marine Ecology
  • OCEN 301 Practical and Field Oceanography
  • OCEN 322 Biological Oceanography
  • MARI 401 Advanced Methods in Marine Science
  • OCEN 450 Data Analysis Methods in Oceanography (Coordinator)

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Publications

Salinger, M. J., Renwick, J., Behrens, E., Mullan, A. B., Diamond, H. J., Sirguey, P., Smith, R. O., … Cullen, N. J., Fitzharris, B. B., Hepburn, C. D., … Sutton, P. J. (2019). The unprecedented coupled ocean-atmosphere summer heatwave in the New Zealand region 2017/18: Drivers, mechanisms and impacts. Environmental Research Letters, 14(4). doi: 10.1088/1748-9326/ab012a

Chandler, M., Bowen, M., & Smith, R. O. (2019). The Fiordland Current, southwest New Zealand: Mean, variability, and trends. New Zealand Journal of Marine & Freshwater Research. Advance online publication. doi: 10.1080/00288330.2019.1629467

O’Callaghan, J., Stevens, C., Roughan, M., Cornelisen, C., Sutton, P., Garrett, S., … Smith, R. O., … Suanda, S. H., … Macdonald, H. (2019). Developing an integrated ocean observing system for New Zealand. Frontiers in Marine Science, 6, 143. doi: 10.3389/fmars.2019.00143

Smith, R. O. (2017). Variability of the subtropical front in the Tasman Sea (PhD). University of Otago, Dunedin, New Zealand. Retrieved from http://hdl.handle.net/10523/7780

Smith, R. O., Vennell, R., Bostock, H. C., & Williams, M. J. M. (2013). Interaction of the subtropical front with topography around southern New Zealand. Deep Sea Research Part I, 76, 13-26. doi: 10.1016/j.dsr.2013.02.007

Journal - Research Article

Salinger, M. J., Renwick, J., Behrens, E., Mullan, A. B., Diamond, H. J., Sirguey, P., Smith, R. O., … Cullen, N. J., Fitzharris, B. B., Hepburn, C. D., … Sutton, P. J. (2019). The unprecedented coupled ocean-atmosphere summer heatwave in the New Zealand region 2017/18: Drivers, mechanisms and impacts. Environmental Research Letters, 14(4). doi: 10.1088/1748-9326/ab012a

Chandler, M., Bowen, M., & Smith, R. O. (2019). The Fiordland Current, southwest New Zealand: Mean, variability, and trends. New Zealand Journal of Marine & Freshwater Research. Advance online publication. doi: 10.1080/00288330.2019.1629467

Atkinson, C. P., Rayner, N. A., Roberts-Jones, J., & Smith, R. O. (2013). Assessing the quality of sea surface temperature observations from drifting buoys and ships on a platform-by-platform basis. Journal of Geophysical Research: Oceans, 118(7), 3507-3529. doi: 10.1002/jgrc.20257

Smith, R. O., Vennell, R., Bostock, H. C., & Williams, M. J. M. (2013). Interaction of the subtropical front with topography around southern New Zealand. Deep Sea Research Part I, 76, 13-26. doi: 10.1016/j.dsr.2013.02.007

Kennedy, J. J., Smith, R. O., & Rayner, N. A. (2012). Using AATSR data to assess the quality of in situ sea-surface temperature observations for climate studies. Remote Sensing of Environment, 116, 79-92. doi: 10.1016/j.rse.2010.11.021

Kennedy, J. J., Rayner, N. A., Smith, R. O., Parker, D. E., & Saunby, M. (2011). Reassessing biases and other uncertainties in sea surface temperature observations measured in situ since 1850: 1. Measurement and sampling uncertainties. Journal of Geophysical Research, 116, D14103. doi: 10.1029/2010JD015218

Kennedy, J. J., Rayner, N. A., Smith, R. O., Parker, D. E., & Saunby, M. (2011). Reassessing biases and other uncertainties in sea surface temperature observations measured in situ since 1850: 2. Biases and homogenization. Journal of Geophysical Research, 116, D14104. doi: 10.1029/2010JD015220

Kent, E. C., Kennedy, J. J., Berry, D. I., & Smith, R. O. (2010). Effects of instrumentation changes on sea surface temperature measured in situ. Wiley Interdisciplinary Reviews: Climate Change, 1(5), 718-728. doi: 10.1002/wcc.55

Smith, R. O., Bryden, H. L., & Stansfield, K. (2008). Observations of new western Mediterranean deep water formation using Argo floats 2004–2006. Ocean Science, 4(2), 133-149. doi: 10.5194/os-4-133-2008

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Journal - Research Other

O’Callaghan, J., Stevens, C., Roughan, M., Cornelisen, C., Sutton, P., Garrett, S., … Smith, R. O., … Suanda, S. H., … Macdonald, H. (2019). Developing an integrated ocean observing system for New Zealand. Frontiers in Marine Science, 6, 143. doi: 10.3389/fmars.2019.00143

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Conference Contribution - Published proceedings: Abstract

Clar, S., Gorman, A., & Smith, R. (2018). Large-amplitude internal solitary waves on the South Island's continental margin. In M. Sagar & J. Prebble (Eds.), Geoscience Society of New Zealand Miscellaneous Publication. 151A, (pp. 47). Wellington, New Zealand: GSNZ. [Abstract]

Clar, S., Gorman, A. R., & Smith, R. (2017). Seismic imaging of stationary meso-scale eddies east of Cook Strait. In J. Baker & M. Rowe (Eds.), Geoscience Society of New Zealand Miscellaneous Publication. 134A, (pp. 20). Takaka, New Zealand: GSNZ. [Abstract]

Smith, R. O., & Vennell, R. (2014). Understanding decadal-scale variability of the subtropical front in the South Pacific. Proceedings of the Ocean Sciences Meeting. Retrieved from http://www.sgmeet.com/osm2014/default.asp

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Conference Contribution - Verbal presentation and other Conference outputs

Smith, R. (2017, August). Temporal variability of the subtropical front in the Tasman Sea. Verbal presentation at the Physical Oceanography Workshop, Wellington, New Zealand.

Smith, R. (2012, June). Tracing the subtropical front south of New Zealand. Verbal presentation at the Physical Oceanography Workshop, Wellington, New Zealand.

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Awarded Doctoral Degree

Smith, R. O. (2017). Variability of the subtropical front in the Tasman Sea (PhD). University of Otago, Dunedin, New Zealand. Retrieved from http://hdl.handle.net/10523/7780

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