Programação do curso de duas semanas do Dr. Curtis Mobley.
O curso ocorrerá do dia 18 de Fevereiro ate dia 1 de Março de 2013, conforme ementa
proposta abaixo. Além do descrito abaixo, no dia 23 de Fevereiro está programado uma
aula prática, para medidas de propriedades óticas inerentes de corpos de água, durante
todo o dia no reservatório de Paraibuna.
Nos dias em que não houver aulas teóricas no período da tarde, o Dr. Mobley ficara
disponível para analises de dados coletados por alunos.
Proposed Syllabus for a Course on
Optical Oceanography and HydroLight
To be presented by Curtis Mobley
INPE, 2013
I will bring a laptop computer with my lectures (as PowerPoint presentations) and
HydroLight installed for my demonstrations. Students running Hydrolight will need to
have access to personal computers with MicroSoft Windows (XP to Windows 7
operating systems). For student laboratory sessions, I will bring an executable copy of
the current version of HydroLight version 5, which students can run on personal
computers.
Lecture times will vary with the topic, but will typically be one to 1.5 hours long plus
time for questions.
Day 1: Begin covering the basic theory of optical oceanography
Lecture 1: Light and Radiometry. This is a review of basic definitions for light
(radiance, irradiance, etc.) and associated mathematics (solid angle, etc.)
Lecture 2: Defining Inherent Optical Properties. Definitions of lOPs and generic
instrument design for measuring lOPs.
Day 2: Continue with the foundations
Lecture 3: The Radiative Transfer Equation. Derivation, inputs and boundary
conditions needed for its solution.
Lecture 4: Defining Apparent Optical Properties. Definitions of diffuse attenuation
functions, reflectances, etc.
Day 3: Measurements and bio-optical models for lOPs
Lecture 5: Measurement of and Bio-optical Models for Absorption (Hydro light
inputs)
Lecture 6: Measurement of and Bio-optical Models for Scattering (Hydrolight
inputs)
Day 4: I can now introduce HydroLight and its inputs and outputs
Lecture 7: Overview of HydroLight. What it does and does not do.
Lecture 8: Demonstration Runs with HydroLight. Runs for simple problems; how to
view output.
Day 4: afternoon
Lab 1: Running HydroLight for Simple Problems. Students install and begin to run
HydroLight to solve assigned problems. Get experience with HydroLight for simple
simulations.
Day 5: 1 lecture on advanced features of HydroLight and then students continue to run
HydroLight for assigned problems
Lecture 9: Advanced Features of Hydrolight. Demonstration of building up lOPs from
many components, e.g. for simulation of Case 2 waters; writing your own lOP models,
reading in your own data files for lOPs, bottom reflectances, etc.
Day 5, afternoon:
Lab 2: Students Run HydroLight for Assigned Problems (with my assistance, as
needed) Get experience using HydroLight to solve more advanced problems.
Day 6: Now begin more specialized lectures on aquatic remote sensing. Students can
continue to work with HydroLight as they desire.
Lecture 10: Atmospheric Correction for Case 1, Deep Water (review what is used or
most satellite, multispectral, systems and why it doesn't work for shallow or Case 2
waters)
Lecture 11: Atmospheric Correction for Case 2 and Shallow Waters (what is used
for airborne, hyperspectral systems in Case 2 and shallow waters).
Day 7: Continue with remote sensing
Lecture 12: Statistical Methods for Remote Sensing. Remote sensing as an inverse
problem. Band-ratio algorithms and neural networks.
Lecture 13: Semi-analytical Methods for Remote Sensing. "Physics-based" models for
remote sensing
Day 8: Lectures on optical remote sensing of shallow waters to retrieve bathymetry and
bottom classification
Lecture 14: Spectrum-matching Techniques for Shallow-water Remote Sensing.
Retrieval of bathymetry and bottom classification in optically shallow waters.
Lecture 15: Error Analysis Based on Spectrum-matching Techniques. How to generate
confidence maps or error bars for retrieved bathymetry and bottom classification.
Day 9: 1 lecture on ecosystem modeling an one on doing field work correctly. Students
can continue to work with HydroLight as they desire.
Lecture 16: Incorporation of Optics into Coupled Physical-Biological-Optical
Ecosystem Models. This is a topic of much current interest in ocean ecosystem
prediction.
Lecture 17: What should be measured during every field experiment. No one ever
measures what is really needed/
Day 10: The last day can be used for wrapup and to cover topics of specific interest to
the course participants. This could include mathematical techniques for solving the
radiative transfer equation, or other topics as requested.
Experience has shows that this schedule will give very busy days for everyone, and will
give students a good overview of the entire subject area and training in how to use
HydroLight.
CURTIS MOBLEY
Dr. Curtis Mobley graduated from the University of Texas at Austin with Highest
Honors in Physics, and he received his Ph.D. in Meteorology in 1977 from the
University of Maryland.
During his career he has been a Fulbright Fellow to the Federal Republic of Germany,
and National Research Council Resident Research Associate at the NOAA Pacific
Marine Environmental Lab in Seattle, Washington and at the NASA Jet Propulsion Lab
in Pasadena, California.
He has worked at the University of Washington and SRI International, and he was
Program Manager of the Ocean Optics (now Environmental Optics) Program at the
Office of Naval Research. He is currently an associate professor of physics at Pacific
Lutheran University, and an Affiliate Professor in the School of Oceanography at the
University of Washington. Since 1996 he has been Vice President and Senior Scientist at
Sequoia Scientific, Inc. in Bellevue, Washington.
Dr. Curtis Mobley primary research interests are in optical oceanography and radiative
transfer theory. He is best known for his Hydrolight software and for the text Light and
Water. His current research centers on use of hyperspectral imagery to extract
environmental information in shallow waters, and on development of coupled physicalbiological-optical ecosystem models.
The remote-sensing work has been on development and evaluation of spectrummatching methods for retrieval of bathymetry, bottom classification, and water inherent
optical properties from airborne hyperspectral imagery. The ecosystem modeling work
has been development of an extremely fast version of HydroLight, named EcoLight, for
use as the optical component of coupled physical-biological-optical ocean ecosystem
models.
Below are some scientific papers from Dr. Curtis Mobley research:
C. D. Mobley. (2011) Fast light calculations for ocean ecosystem and inverse models.
OPTICS EXPRESS Volume 19 Issue 20 Pages 18927:18944.
C. D. Mobley, L. K. Sundman,W. P. Bissett, and B. Cahill, “Fast and accurate irradiance
calculations for ecosys- tem models,” Biogeosci. Discuss. 6, 10625–10662 (2009),
http://www.biogeosciences-discuss. net/6/10625/2009/bgd-6-10625-2009.pdf.
Mobley CD, Stramski D, Bissett WP, Boss E (2004) Optical modeling of ocean water: is
the case 1—case 2 classiWcation still useful? Oceanography 17:60–67.
Mobley CD, Sundman LK, Davis CO, Downes TV, Leathers RA, Montes MJ, Bowles
JH, Bissett WP, Kohler DDR, Reid RP, Louchard EM, Gleason A (2005) Interpretation
of hyperspectral remote-sensing imagery via spectrum matching and look-up tables.
Appl Opt 44:3576–3592
C. D. Mobley, L. K. Sundman, and E. Boss, “Phase function effects on oceanic light
fields,” Appl. Opt. 41, 1035–1050 (2002).
R. A. Leathers, T. V. Downes, and C. D. Mobley, “Self- shading correction for
upwelling sea-surface radiance mea- surements made with buoyed instruments,” Opt.
Exp. 8, 561–570 (2001); http://www.opticsexpress.org/oearchive/ source/32933.htm.
Z. Lee, K.L. Carder, C.D. Mobley, R.G. Steward, and J.S. Patch, “Hyperspectral remote
sensing for shallow waters: 2. Deriving bottom depths and water properties by
optimization,” Appl. Opt. 38, 3831-3843 (1999).
Z. Lee, K.L. Carder, C.D. Mobley, R.G. Steward, and J.S. Patch, “Hyperspectral remote
sensing for shallow waters. 1. A semianalytical model,” Appl. Opt. 37, 6329-6338
(1998).
C.D. Mobley, Light and water - radiative transfer in natural waters (Academic Press,
San Diego, 1994).
C.D. Mobley, B. Gentili, H.R. Gordon, Z. Jin, G.W. Kattawar, ´A. Morel, P. Reinersman,
K. Stamnes, and R.H. Stavn, “Comparison of numerical models for computing
underwater light fields,” Appl. Opt. 32, 7484-7504 (1993).
C. D. Mobley, “A new IOP model for Case 1 water,” in Ocean Optics Web Book, http:
//www.oceanopticsbook.info/view/optical_constituents_of_the_ocean/__level_
2/a_new_iop_model_for_case_1_water.