A comparison of bulk aerodynamic methods for calculating air-sea flux
Eleuterio, Daniel Patrick.
MetadataShow full item record
The Louis et al. (1982) bulk aerodynamic method for air-sea flux estimates is currently used in mesoscale models such as COAMPS, while the TOGA- COARE method is a state of the art flux parameterization involving recent findings in surface layer meteorology, and has been proposed as a replacement to Louis. The Louis and TOGA-COARE methods were compared to direct observations daring ACE-1. Results from both methods compared well to observations for momentum flux. For sensible and latent heat flux, both methods showed good agreement in low flux regimes and underestimated the fluxes at higher values. Calculation of the transfer coefficients required to match observations indicated that the bulk transfer coefficients do not increase rapidly enough for z/L values less than -0.5. In the high wind regime, the transfer coefficients were very sensitive to static stability. The COARE method was superior to the Louis method for sensible heat flux estimates while the Louis method was better for latent heat flux. A sensitivity test was done to use the COARE roughness length parameterization in the Louis method. This resulted in slight improvement in sensible heat flux estimates for highly convective conditions. Latent heat flux was overestimated by the modified Louis parameterization in the same manner as the COARE algorithm, indicating that specification of the latent heat roughness length requires further study.
Showing items related by title, author, creator and subject.
Martin, Frank Lionel (Monterey, California. Naval Postgraduate School, 1972-12-01); NPS-51MR72121AA method has been devised for integrating the pressure-scaled water-vapor and CO2 absorber masses from the surface to the sigma - levels used for prediction in the Naval Postgraduate School primitive equation model. Using ...
MESOSCALE SIMULATIONS OF COASTAL CIRCULATIONS EVALUATED USING MEASUREMENTS FROM A DENSE MESO NETWORK Muggelberg, Daniel B. (Monterey, California. Naval Postgraduate School, 2013-03);This research focuses on the evaluation of a mesoscale model in simulating coastal sea-breeze circulations. Measurements for this purpose were made from a mesonetwork consisting of 36 towers and five Doppler Wind Profilers ...
Nuss, Wendell A.; Miller, Douglas K. (2003);The role of surface sensible and latent heat fluxes in rapid oceanic cyclone development was a common topic in the late 1980s and early 1990s. The debate centered on the importance of these fluxes in overall storm ...