HR: 16:45h
AN: OS14A-04    [Abstracts]
TI: Numerical Geostrophic Adjustment Process Experiments
AU: * MEHRA, A
EM: Avichal.Mehra@noaa.gov
AF: Marine Modeling & Analysis Branch, EMC/NCEP/NOAA, 5200 Auth Rd., Room 209, Camp Springs, MD 20746 United States
AU: Lozano, C J
EM: Carlos.Lozano@noaa.gov
AF: Marine Modeling & Analysis Branch, EMC/NCEP/NOAA, 5200 Auth Rd., Room 209, Camp Springs, MD 20746 United States
AB: The accurate representation of the adjustment processes in the ocean from a realistic ageostrophic state is an important attribute of a numerical model. Numerical experiments using the hybrid coordinates in HYCOM are carried out to study the the evolution towards an adjusted geostrophic state after a quick release of a fixed volume of fresh water, initially confined in a cylinder, in a dense rotating fluid. The numerical simulations are designed to reproduce some of the laboratory experiments of Stenger et al (JFM, 2004). Particular attention is given to the evolution of the adjustment process and the final adjusted state. Some of the dependencies on the selection of numerical schemes and parameters are investigated. Comparisons are made with Laboratory experiments and classical geostrophic adjusment theory.
DE: 4255 Numerical modeling (0545, 0560)
DE: 4263 Ocean predictability and prediction (3238)
DE: 4410 Bifurcations and attractors
DE: 4528 Fronts and jets
DE: 4560 Surface waves and tides (1222)
SC: Ocean Sciences [OS]
MN: Fall Meeting 2005