High Fidelity VSF Measurements and Inversion for RaDyO (Hi Fi RaDyO)
Abstract
Time and space dependent radiance distributions at the sea surface are a function of the shape of the incident distribution on the surface, modification by the sea surface itself from topography and transmission characteristics, and alteration by the Inherent Optical Properties (IOPs) of the surface ocean. Our long term goal is understanding this last controlling factor. With a knowledge of the IOPs, radiance fields can be directly computed from the incident field using the equation of radiative transfer, now embedded in commercially available code (e.g., Hydrolight). With the state of current technology and methodologies, the primary obstacles in understanding subsurface IOPs and their high-frequency dynamics are a lack of 1) volume scattering instrumentation, 2) comprehensive inversion models linking the IOPs with the ambient particle fields including bubbles (models which in many cases will require input dependent on 1), and 3) suitably stable, non-intrusive platforms to sample the subsurface ocean. The first two challenges are addressed in this project. There are two broad objectives for this project: 1) To develop an in-situ volume scattering function device measuring volume scattering from 10? to 170? at 10? intervals and sampling rates of 1 s-1 or better to sample the VSF in near-surface waters; and 2) To develop and refine IOP inversion models to resolve particle field characteristics on small spatial (cm?s) and temporal (<1 s) scales in near-surface waters.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2009
- Accession Number
- ADA527086
Entities
People
- Michael Twardowski
- Ron Zaneveld