INTERESTS:

Physical/biological interactions in the euphotic zone, inherent optical properties and relationships to biological variability, ocean color satellite bio-optical algorithm development, and radiative transfer, inversion and closure.

Barnard, A.H., J.R.V. Zaneveld, W.S. Pegau, J.L. Mueller, H. Maske, R. Lara-Lara, S. Alvarez-Borrego, R. Cervantes-Duarte, and E. Valdez-Holquin. 1999. The determination of PAR levels from absorption coefficient profiles at 490 nm. Ciencias Marinas, in press.

Barnard, A.H., J.R.V. Zaneveld, and W.S. Pegau. 1999. Remotely sensed reflectance and the absorption coefficient: Closure and inversion. Applied Optics, 38, 5108-5117.

Barnard, A.H., W.S. Pegau, and J.R.V. Zaneveld. 1998. Global relationships in the inherent optical properties of the oceans. J. Geophys. Res., 103:24,955-24,968.

Barnard, A.H., J.R.V. Zaneveld, and W.S. Pegau. 1998. SeaWiFS ocean color in the Gulf of California: Validation. Ocean Optics XIV Conference Papers, Volume 2, Kailua-Kona, HI, November 10-13.

Barnard, A.H., P.M. Stegmann, and J.A. Yoder. 1996. Seasonal surface ocean variability in the South Atlantic Bight derived from CZCS and AVHRR imagery. Cont. Shelf Res., 17, 1181-1206.

Yoder, J.A., J.E. O'Reilly, A.H. Barnard, T.S. Moore, and C.M. Ruhsam. 1999. Variability in Coastal Zone Color Scanner (CZCS) chlorophyll imagery of ocean margin waters off the U.S. East Coast. Submitted to Cont. Shelf Res.

Pegau, W.S., J.R.V. Zaneveld, A.H. Barnard, H. Maske, S. Alvarez-Borrego, R. Lara-Lara, R. Cervantes-Duarte. 1999. Inherent optical properties in the Gulf of California. Ciencias Marinas, in press.

Boss, E., W. S. Pegau, W. D. Gardner, J.R.V. Zaneveld, and A.H. Barnard. 1999. Particulate attenuation at the bottom boundary layer of a continental shelf. Submitted to J. Geophys. Res.

Zaneveld, J.R.V., A.H. Barnard, W.S. Pegau, and E. Boss. 1998. An investigation into the appropriate depth average of remotely sensed optical parameters. Ocean Optics XIV Conference Papers, Volume 2, Kailua-Kona, HI, November 10-13.

Pegau, W.S., A.H. Barnard, J.R.V. Zaneveld, J.L. Mueller, H. Maske, R. Lara-Lara, S. Alvarez-Borrego, E. Valdez-Holguin, and R. Cervantes-Duarte. 1998. Optical variability in the Gulf of California. Ocean Optics XIV Conference Papers, Volume 2, Kailua-Kona, HI, November 10-13..

Boss, E., W.S. Pegau, J.R.V. Zaneveld, and A.H. Barnard. 1998. Spatial and temporal variability of absorption by dissolved material at a continental shelf. Ocean Optics XIV Conference Papers, Volume 2, Kailua-Kona, HI, November 10-13.

Petrenko, A.A., J.R.V Zaneveld, W.S. Pegau, A.H. Barnard, and C.D. Mobley. 1998. Effects of a thin layer on reflectance and remote-sensing reflectance. Oceanography, 11, 44-47.

Zaneveld, J.R.V., W.S. Pegau, A.H. Barnard, J.L. Mueller, H. Maske, E. Valdez, R. Lara-Lara, and S. Alvarez-Borreo. 1997. Prediction of euphotic depths and diffuse attenuation coefficients from absorption profiles: A model based on comparison between vertical profiles of spectral absorption, spectral irradiance, and PAR. SPIE, 2963: 585-590.

Bisagni, J., J. O’Reilly, A.H. Barnard, and C. Wolfteich. 1996. Determination of optimal aerosol thickness ratios over the Gulf of Maine. Cont. Shelf Res., 17, 635-654.

PUBLICATIONS IN PROGRESS:

Barnard, A.H., J.R.V. Zaneveld, W.S. Pegau, and T.J. Cowles. Assessing a key implicit assumption in ocean color remote sensing algorithms: Optical homogeneity. To be submitted to Applied Optics.

Faculty Research Assistant, (Dr. Ron Zaneveld), Oregon State University, College of Oceanic and Atmospheric Sciences. May 1996 - present. Analyses, visualization and processing of physical, biological and optical data collected at sea. Collaboration with optics company (WETLabs) in the design and testing of data acquisition and processing hardware and software.

Marine Research Specialist, (Dr. James A. Yoder), University of Rhode Island, Graduate School of Oceanography. Sept. 1993 - May 1996. Duties included ocean color and sea-surface temperature satellite data processing and database management, UNIX system administration, computer systems technical support, and conducting scientific research for publication.

Master’s Thesis, (Thesis advisor, Dr. Dudley B. Chelton), Oregon State University, College of Oceanic and Atmospheric Sciences. Jul. 1991 - Aug. 1993. Thesis title: "Seasonal variability of zooplankton off the California coast: A box model approach." Derived bio-physical model examining seasonal distributions of zooplankton.

1999 MOCE-5 MODIS Validation Cruise (NASA sponsored), R/V Melville.

1998 Persistent structure (NSF/NASA sponsored), R/V Wecoma.

1998 East Sound Thin Layers/Overflight (ONR sponsored), R/V Barnes.

1998 East Sound Thin Layers (ONR sponsored).

1997 Persistent structure (NSF/NASA sponsored), R/V Wecoma.

1997 Coastal Mixing and Optics (ONR sponsored), R/V Knorr.

1996 Coastal Mixing and Optics (ONR sponsored), R/V Seward Johnson.

Aquatic Sciences Meeting (ASLO), Santa Fe, NM, Feb. 1-5, 1999. "Assessing a key implicit assumption in ocean color remote sensing algorithms: Optical homogeneity", poster.

Ocean Optics XIV, Kialua-Kona, HI, Nov. 1998. "SeaWiFS ocean color in the Gulf of California: Validation", poster.

Ocean Sciences (AGU/ASLO), San Diego, CA, Feb. 1998. "Bio-optical maps derived from ocean color imagery using a backscattering independent algorithm", oral presentation.

Aquatic Sciences Meeting (ASLO), Santa Fe, NM, Feb. 1997. "Comparison of inherent optical properties across a variety of oceanic regimes for application to remote sensing", poster.

Ocean Sciences (AGU/ASLO), San Diego, CA, Feb. 1996. "Surface-ocean variability in the shelf waters off North and South Carolina derived from long time-series of CZCS and AVHRR satellite imagery", oral presentation.

The Oceanography Society, Newport, RI, Apr. 1995. "Surface ocean variability in the South Atlantic Bight derived from long time-series of CZCS and AVHRR satellite imagery", poster.

NASA SIMBIOS Team meeting, Sept. 1999.

NASA SeaWiFS algorithms mini-workshop, July 1999.

NASA SeaWiFS Science Team meeting, May 1999.

NASA SIMBIOS Team meeting, Sept. 1998.

NASA SIMBIOS Team meeting, Aug. 1997.

NASA SeaWiFS Bio-optical protocols round robin workshops, Nov. 1994, and Mar. 1996.