Johannes Gemmrich Research Scientist

Dept. of Physics & Astronomy University of Victoria P.O. Box 3055 Victoria, British Columbia, V8W 3P6 Canada Bob Wright Building, A434 Phone: 250-507-1490 Email: gemmrich@uvic.ca

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Research Interests

Air-sea interaction, turbulence,  wave-breaking, rogue waves,   internal waves.

Education

Doctorate:  University of Victoria: Physical Oceanography
Masters:  Christian Albrechts Universität, Institut für Meereskunde, Kiel, Germany: Marine Meteorology (Diplom)

Teaching

EOS 431/531
 
 

Publications

Gemmrich, J. R. and C. Garrett, 2012: 'The Signature of Inertial and Tidal Currents in Offshore Wave Records'. J. Phys. Oceanog., 42, DOI: 10.1175/JPO-D-12-043.1. [preprint ]

Gemmrich, J., 2012: ' Bubble-induced turbulence suppression in Langmuir circulation.' Geophys. Res. Lett., 39, L10604, doi:10.1029/2012GL051691. [pdf ]

Dickey, T., et al. 2012: ' Introduction to special section on Recent Advances in the Study of Optical Variability in the Near-Surface and Upper Ocean.' J. Geophys. Res., 117, doi:10.1029/2012JC007964. [pdf ]

Zappa, C., M.L. Banner, H. Schultz, J.R. Gemmrich, R.P. Morison, D.A. LeBel, and T. Dickey, 2012: ' An overview of sea state conditions and air-sea fluxes during RaDyO.' J. Geophys. Res., 117, doi:10.1029/2011JC007336. [pdf ]

Garrett, C., J. Gemmrich, and B. Bascheck, 2012: 'Rogue waves'. McGraw-Hill Yearbook of Science and Technology, 229-231.

Vagle, S., J. Gemmrich, and H. Czerski, 2011: 'Reduced upper ocean turbulence and changes to bubble size distribution during large downward heat-flux events.' J. Geophys. Res., doi:10.1029/2011JC007308. [preprint ]

Gemmrich, J. R., B. Thomas, and R. Bouchard, 2011: 'Observational changes and trends in northeast Pacific wave records.' Geophys. Res. Lett., 38, L22601, doi:10.1029/2011GL049518. [pdf ]

Gemmrich, J. R. and C. Garrett, 2011: 'Dynamical and statistical explanations of observed occurrence rates of rogue waves.' Nat. Hazards Earth Syst. Sci., doi:10.5194/nhess-11-1-2011 [pdf ]

Gemmrich, J. R., 2010: 'Strong turbulence in the wave crest region.' J. Phys. Oceanog., 40, 583 – 595. [pdf ]

Thomson, J., J.R. Gemmrich, and A.T. Jessup, 2009. 'Energy dissipation and the spectral distribution of whitecaps'. Geophys. Res. Let. 36(L11601): doi: 10.1029/2009GL038201 [pdf ]

Garrett, C. and J. R. Gemmrich, 2009: 'Rogue waves'. Physics Today, 62(6), doi:10.1063/1.3156339 [ pdf ]

Gemmrich, J. R. and C. Garrett, 2009: 'Unexpected waves: Shallow water simulations and comparison with observations'. Ocean Eng., 37, 262 – 267.. [pdf ]

Gemmrich, J. R. and C. Garrett, 2008: 'Unexpected waves'. J. Phys. Oceanog. 38, 2330-2336. [pdf ]

Gemmrich, J. R., M.L. Banner and C. Garrett, 2008: 'Spectrally resolved energy dissipation rate and momentum flux of breaking waves'. J. Phys. Oceanog. 38, 1296-1312. [pdf ]

Burchard, H., P.D. Craig, J.R. Gemmrich, H. van Haren, P.-P. Mathieu, H.E.M. Meier, W. A.M. Nimmo Smith, H. Prandke, T.P. Rippeth, E.D. Skyllingstad, W.D. Smyth, D.J.S. Welsh, and H.W. Wijesekera, 2008: 'Observational and numerical modeling methods for quantifying coastal ocean turbulence and mixing', Progr. Oceanogr., 76, 399-442. [pdf ]

Gemmrich, J: 2007: 'Momentum flux and energy dissipation associated with breaking waves', in Transport at the air-sea interface, eds. Garbe, C., R. Handler and B. Jähne. Springer Verlag Berlin, Heidelberg, 131 - 142.

Gemmrich, J, 2006: 'The spectral scale of wave breaking', Proceedings 9th International Workshop on Wave Hindcasting and Forecasting. [pdf ] [workshop ]

Gemmrich, J, 2006: 'Breaking waves and near surface turbulence', Encyclopedia of Ocean Sciences, eds. Steele, J.H., S.A. Thorpe and K.K Turekian, Elsevier. [pdf ]

Gemmrich, J., 2005: 'On the occurrence of wave breaking'. In: 14th 'Aha Huliko'a Hawaiian Winter Workshop on Rogue Waves, January 2005, 123-130. [pdf ] [workshop ]

Gemmrich, J. R. and D. M. Farmer, 2004: 'Near-surface turbulence in the presence of breaking waves'. Journal of Physical Oceanography, 34, 1067-1086. [pdf ]

Banner, M. L., Gemmrich, J. R. and D. M. Farmer, 2002: 'Multi-scale measurements of ocean wave breaking probability'. Journal of Physical Oceanography, 32, 3364-3375. [pdf ]

Gemmrich, J. and H. van Haren, 2002: 'Internal wave band kinetic energy production: flat vs sloping bottom'. Journal of Sea Research, 47, 209-222 [ pdf ]

Gemmrich, J. and H. van Haren, 2002: 'Internal wave band eddy fluxes above a continental slope'. Journal of Marine Research, 60, 227-253. [ pdf ]

Gemmrich, J. and H. van Haren, 2001: 'Thermal fronts generated by internal waves propagating obliquely along the continental slope'. Journal of Physical Oceanography, 31, 649-655. [pdf ]

Gemmrich, J. R, 2000: 'Temperature anomalies beneath breaking waves and the decay of wave-induced turbulence'. Journal of Geophysical Research, 105, 8727-8736 [pdf ]

Gemmrich, J. R, and D. M. Farmer, 1999: 'Temperature anomalies beneath breaking waves and the decay of wave-induced turbulence - Extended abstract'. In: The wind-driven air-sea interface. Electromagnetic and acoustic sensing, wave dynamics and turbulent fluxes. Ed. M. L. Banner, University of New South Wales, Sydney, Australia. 193-194.

Gemmrich, J. R. and D. M. Farmer, 1999: 'Observations of the scale and occurrence of breaking surface waves'. Journal of Physical Oceanography, 29, 2595-2606 [pdf ]

Gemmrich, J. R. and D. M. Farmer, 1999: 'Near-surface turbulence and thermal structure in a wind driven sea'. Journal of Physical Oceanography, 29, 480-499 [pdf ]

Farmer, D., J. Gemmrich and V. Polonichko, 1998: 'Velocity, temperature and spatial structure of Langmuir circulation'. Physical Processes in Lakes and Oceans, J. Imberger, Ed., Coastal and Estuary Studies, 54, AGU

Farmer, D. M. and J. R. Gemmrich, 1996: 'Measurements of temperature fluctuations in breaking surface waves'. Journal of Physical Oceanography, 5, 816-825 [pdf ]

Gemmrich, J. R., T. D. Mudge and V. D. Polonichko, 1994: 'On the energy input from wind to surface waves'. Journal of Physical Oceanography, 24, 2413-2417 [pdf ] [corrigendum ]

Gemmrich, J. and Hasse, L.,1993: 'Observations of small-scale surface streaming as an indication of surface renewal'. Journal of Marine Systems, 4, 231-233

Gemmrich, J. and Hasse, L.,1992: 'Small-scale surface streaming under natural conditions as effective in air-sea gas exchange'. Tellus 44B, 150-159 [pdf ]