Understanding Near-Surface and In-cloud Turbulent Fluxes in the Coastal Stratocumulus-topped Boundary Layers
نویسندگان
چکیده
The objective of this project is to quantify the spatial and temporal variability of the turbulent fluxes in the Monterey Bay area. The analysis from this study provides the surface forcing to our collaborators (AOSN investigators) and enable us to understand these variabilities in relation to the sea states and the stratocumulus-topped marine atmospheric boundary layers (MABL) properties. The results will also be used to evaluate COAMPS for simulating the stratocumulus-topped MABL (STBL). Our work in FY03 was focused on the production of calibrated and time-synchronized high-rate wind turbulence, temperature, and specific humidity data and processed surface fluxes of momentum, sensible heat, and latent heat fluxes from the raw aircraft measurements of the Autonomous Oceanographic Sampling Network (AOSN-II) Experiment co-sponsored by the Monterey Bay Aquarium Research Institute (MBARI) and ONR. We also had a first indication of the spatial and temporal variability of the surface turbulent fluxes over Monterey Bay.
منابع مشابه
Observational and Numerical Studies of the Boundary Layer, Cloud, and Aerosol Variability in the Southeast Pacific Coastal Marine Stratocumulus
of a dissertation at the University of Miami. Dissertation supervised by Professor Bruce Albrecht. No. of pages in text. (124) This dissertation investigates the impacts of meteorological factors and aerosol indirect effects on the costal marine stratocumulus (Sc) variations in the southeast Pacific, a region that has been largely unexplored and is a major challenge of the modeling community, t...
متن کاملModeling a Stratocumulus-Topped PBL: Intercomparison among Different One-Dimensional Codes and with Large Eddy Simulation
Bulletin of the American Meteorological Society rameterization schemes for use in general circulation models (GCMs) and (ii) to develop new parameterization schemes based on numerical data generated from large eddy simulations (LESs) or cloud resolving models (CRMs) (Browning 1993). While 3D LESs can explicitly resolve most of the turbulent eddies, CRMs, which resolve only large cloud elements,...
متن کاملLarge-eddy simulation of subtropical cloud-topped boundary layers: 1. A forcing framework with closed surface energy balance
Large-eddy simulation (LES) of clouds has the potential to resolve a central question in climate dynamics, namely, how subtropical marine boundary layer (MBL) clouds respond to global warming. However, large-scale processes need to be prescribed or represented parameterically in the limited-area LES domains. It is important that the representation of large-scale processes satisfies constraints ...
متن کاملCoastal Stratocumulus Topped Boundary Layers and the Role of Cloud-top Entrainment
The ability of the U.S. Navy’s Coupled Ocean-Atmosphere Mesoscale Prediction System (COAMPSTM) to accurately forecast the height and structure of the Marine Boundary Layer (MBL) in the coastal zone is analyzed and compared to surface and aircraft observations from the Dynamics and Evolution of Coastal Stratus (DECS) field study conducted along the central coast of California from June, 16 to Ju...
متن کاملA method to determine the amounts of cloud-top radiative and evaporative cooling in a stratocumulus-topped boundary layer
The turbulent processes of a stratocumulus-topped marine boundary layer are not yet fully understood. Among the issues is the relative importance of the effects of cloud-top radiative and evaporative cooling in driving the stratocumulus-topped marine boundary layer turbulence, and in producing cloud break-up. A better way to analyse the relevant observations is needed. Based on the concepts of ...
متن کامل