AI003
Impacts and dynamics of bubbles in the ocean surface layer
Session ID#: 84925
Session Description:
Bubbles are a fleeting, yet omnipresent feature of the surface ocean. The majority are generated by the breaking of ocean waves and they are a critical component of the airâsea interface, particularly in high-wind conditions. Bubbles play an important role in the biogeochemical cycle through their role in air-sea gas exchange, scavenging of both dissolved and particulate material, impact on the surface microlayer, and marine aerosol creation. The presence of bubbles has a considerable influence on ocean optical properties, affecting particle scattering, ocean color, lidar returns, visibility, and image quality. Bubbles also affect the propagation of high frequency acoustic signals. There are in turn sensitive optical and acoustical techniques to detect and track bubbles in surface waters, although no universal measurement methods exist. We note that although ocean bubbles have been visible to seafarers for centuries, the detailed physics behind their nature and influence are still relatively poorly understood.
This session invites contributions based on theory, observations, experiments, and modeling that expand our knowledge of the physics of the air-sea interface in the presence of whitecaps and bubbles. Topics of interest include characterization of bubbles by optical or acoustical means, the physical processes related to their creation (high wind, breaking waves), transport (mixed layer turbulence, downwelling by Langmuir cells) or destruction (sea spray, gas diffusion), and their impacts on oceanic and boundary layer biogeochemistry.
The Chairs hope that this session will raise awareness of the often understated importance of bubbles in the physics of air-sea interaction.
Index Terms:
4259 Ocean acoustics [OCEANOGRAPHY: GENERAL]
4264 Ocean optics [OCEANOGRAPHY: GENERAL]
4299 General or miscellaneous [OCEANOGRAPHY: GENERAL]
4504 Air/sea interactions [OCEANOGRAPHY: PHYSICAL]
Primary Chair: Damien B Josset, US Naval Research Laboratory, Stennis Space Center, MS, United States
Co-chairs: Michael Twardowski, Harbor Branch Oceanographic Institute, Ft. Pierce, FL, United States; Florida Atlantic University and Helen Czerski, University College London, London (WC1E 7BT), United Kingdom
Primary Liaison: Damien B Josset, US Naval Research Laboratory, Stennis Space Center, MS, United States
On the retrieval of bubble properties from space lidar and their impact on acoustic transmission loss (636722)
Damien B Josset1, David W Wang2, Ivan Savelyev3, Magdalena D Anguelova4, Richard S. Keiffer5 and J Paquin Fabre5, (1)US Naval Research Laboratory, Stennis Space Center, MS, United States, (2)U.S. Naval Research Laboratory, Ocean Sciences, Stennis Space Center, MS, United States, (3)U. S. Naval Research Laboratory, Remote Sensing Division, Washington, DC, United States, (4)Naval Research Lab, Washington, DC, United States, (5)US Naval Research Lab, Code 7180, Stennis Space Center, MS, United States
Unpicking the details of deep bubble plumes in stormy conditions: bubble populations and plume spatial distributions measured in the North Atlantic during the HiWINGS expedition. (642150)
Helen Czerski, University College London, London, United Kingdom, Adrian Matei, University College London, United Kingdom, Steve Gunn, University of Southampton, Southampton, United Kingdom, Ian M Brooks, University of Leeds, Leeds, United Kingdom and Raied Al-Lashi, Nottingham Trent University, Nottingham, United Kingdom
Acoustic Observations of Bubble Plumes at a Tidal Intrusion Front in the James River Estuary (643317)
Christopher Bassett, Applied Physics Laboratory University of Washington, Seattle, WA, United States, Andone C Lavery, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, W Rockwell Geyer, Woods Hole Oceanographic Institution, Applied Ocean Physics and Engineering, Woods Hole, MA, United States and Jim Thomson, University of Washington, Seattle, WA, United States
Modeling whitecaps on global scale (645732)
Aishwarya Raman, Science Systems and Applications, Inc., Lanham, MD, United States; NASA Goddard Space Flight Center, GMAO, Greenbelt, MD, United States and Anton Darmenov, NASA Goddard Space Flight Center, Global Modeling and Assimilation Office, Greenbelt, MD, United States
Entrained bubble populations and their influence on the turbulence, dissipation, and stress beneath breaking and non-breaking waves (647510)
Andrew Wyatt Smith1, Brian K Haus1 and Rachel Stanley2, (1)University of Miami, Miami, FL, United States, (2)Wellesley College, Wellesley, MA, United States
The Growing Awareness of the Various Roles Bubbles Play in Air-Sea Exchange (648217)
Edward C Monahan1, Penny Vlahos1 and Allison Staniec2, (1)University of Connecticut, Marine Sciences, Groton, CT, United States, (2)University of Connecticut, Groton, CT, United States
Investigation of Sea-to-Air Transfer in Lakes: Testing HAB Particle Aerosolization Tank Methodology (656380)
Raymond Leibensperger III1, Cassandra Gaston2, Kimberly J. Popendorf3, Brian K Haus4, Larry E Brand5, Milan Curcic6 and Albert Ortiz1, (1)University of Miami, Miami, United States, (2)University of Miami, Department of Atmospheric Sciences, Miami, FL, United States, (3)University of Miami, Ocean Sciences, Miami, FL, United States, (4)University of Miami, Miami, FL, United States, (5)University of Miami, Marine Biology and Ecology, United States, (6)University of Washington, Seattle, WA, United States
Scaling the Bubble Penetration Depth in the Open Ocean during the Southern Ocean Gas Exchange Experiment 2008 (656903)
Alejandro Cifuentes-Lorenzen, California State University Maritime Academy, Sciences and Mathematics, Vallejo, CA, United States, Christopher J Zappa, Columbia University, Lamont-Doherty Earth Observatory, Palisades, NY, United States, Kaylan L Randolph, University of Connecticut, Groton, CT, United States and Jim Edson, Woods Hole Oceanographic Institution
