Index Catalog // ScholarsArchive@OSU

Vicarious calibration of the Ocean PHILLS hyperspectral sensor using a coastal tree-shadow method

Creator:: Filippi, Anthony M., Carder, Kendall L., and Davis, Curtiss O.
Abstract:: Ocean color remote-sensing systems require highly accurate calibration (<0.5%) for accurate retrieval of water properties. This accuracy is typically achieved by vicarious calibration which is done by comparing the atmospherically corrected remote-sensing data to accurate estimates of the water-leaving radiance. Here we present a new method for vicarious calibration of...
Resource Type:: Article
Full Text:: hyperspectral sensor using a coastal tree-shadow method Anthony M. Filippi,1 Kendall L. Carder,2 and Curtiss O

Atmospheric Correction Algorithm for Hyperspectral Remote Sensing of Ocean Color from Space

Creator:: Gao, Bo-Cai, Montes, Marcos J., Ahmad, Ziauddin, and Davis, Curtiss O.
Abstract:: Existing atmospheric correction algorithms for multichannel remote sensing of ocean color from space were designed for retrieving water-leaving radiances in the visible over clear deep ocean areas and cannot easily be modified for retrievals over turbid coastal waters. We have developed an atmospheric correction algorithm for hyperspectral remote sensing of...
Resource Type:: Article
Full Text:: Curtiss O. Davis Existing atmospheric correction algorithms for multichannel remote sensing of ocean

Analysis of a Point-Source Integrating-Cavity Absorption Meter

Creator:: Leathers, Robert A., Downes, T. Valerie, and Davis, Curtiss O.
Abstract:: We evaluate the theoretical performance of a point-source integrating-cavity absorption meter (PSICAM) with Monte Carlo simulations and a sensitivity analysis. We quantify the scattering errors, verifying that they are negligible for most ocean optics applications. Although the PSICAM detector response is highly sensitive to the value of the wall reflectivity,...
Resource Type:: Article
Full Text:: Downes, and Curtiss O. Davis We evaluate the theoretical performance of a point-source integrating

Spatial and Spectral Resolution Considerations for Imaging Coastal Waters

Creator:: Davis, Curtiss O., Kavanaugh, Maria, Letelier, Ricardo, Bissett, W. Paul, and Kohler, David
Abstract:: Current ocean color sensors, for example SeaWiFS and MODIS, are well suited for sampling the open ocean. However, coastal environments are spatially and optically more complex and require more frequent sampling and higher spatial resolution sensors with additional spectral channels. We have conducted experiments with data from Hyperion and airborne...
Resource Type:: Article

Derivative analysis of absorption features in hyperspectral remote sensing data of carbonate sediments

Creator:: Louchard, Eric M., Reid, R. Pamela, Stephens, Carol F., Davis, Curtiss O., Leathers, Robert A., Downes, T. Valerie, and Maffione, Robert
Abstract:: This study uses derivative spectroscopy to assess qualitative and quantitative information regarding seafloor types that can be extracted from hyperspectral remote sensing reflectance signals. Carbonate sediments with variable concentrations of microbial pigments were used as a model system. Reflectance signals measured directly over sediment bottoms were compared with remotely sensed...
Resource Type:: Article
Full Text:: Curtiss O. Davis, Robert A. Leathers, T. Valerie Downes Remote Sensing Division, Naval Research

Diffuse attenuation coefficient of downwelling irradiance: An evaluation of remote sensing methods.pdf

Creator:: Lee, Zhong-Ping, Darecki, Miroslaw, Carder, Kendall L., Davis, Curtiss O., Stramski, Dariusz, and Rhea, W. Joseph
Abstract:: The propagation of downwelling irradiance at wavelength l from surface to a depth (z) in the ocean is governed by the diffuse attenuation coefficient, K𝒹(λ). There are two standard methods for the derivation of K𝒹(λ) in remote sensing, which both are based on empirical relationships involving the blue-to-green ratio of...
Resource Type:: Article
Full Text:: ,4 Curtiss O. Davis,5 Dariusz Stramski,6 and W. Joseph Rhea5 Received 1 July 2004; revised 18

Euphotic zone depth: Its derivation and implication to ocean-color remote sensing

Creator:: Lee, ZhongPing, Weidemann, Alan, Kindle, John, Arnone, Robert, Carder, Kendall L., and Davis, Curtiss
Abstract:: Euphotic zone depth, z[subscript]1%, reflects the depth where photosynthetic available radiation (PAR) is 1% of its surface value. The value of z[subscript]1% is a measure of water clarity, which is an important parameter regarding ecosystems. Based on the Case-1 water assumption, z[subscript]1% can be estimated empirically from the remotely derived...
Resource Type:: Article
Full Text:: Curtiss Davis3 Received 6 July 2006; revised 12 October 2006; accepted 1 November 2006; published 16

Influences of salvage logging on forest birds after fire in the eastern Cascades, Oregon

Creator:: Cahall, Rebecca E.
Abstract:: Previous research examining the influences of post-fire salvage logging on abundances of birds has focused primarily on the response of cavity-nesting species. There is limited research in regard to the impact of salvage logging on a broader range of bird species. In addition, little is known about how different intensities...
Resource Type:: Masters Thesis
Full Text:: of salvage logging and an unsalvaged treatment in a post-fire forest of mixed conifers at Davis

From Meters to Kilometers: A Look at Ocean-Color Scales of Variability, Spatial Coherence, and the Need for Fine-Scale Remote Sensing in Coastal Ocean Optics

Creator:: Bissett, W. Paul, Arnone, Robert A., Davis, Curtiss O., Dickey, Tommy D., Dye, Daniel, Kohler, David D. R., and Gould, Richard W. Jr.
Abstract:: The physical, biological, chemical, and optical processes of the ocean operate on a wide variety of spatial and temporal scales, from seconds to decades and from micrometers to thousands of kilometers (Dickey et al., this issue; Dickey, 1991). These processes drive the accumulation and loss of living and nonliving mass...
Resource Type:: Article
Full Text:: Research Laboratory, Stennis Space Center, MS. Curtiss O. Davis is at Remote Sensing Division, Naval

Ocean PHILLS hyperspectral imager : design, characterization, and calibration

Creator:: Davis, Curtiss O., Bowles, Jeffrey, Leathers, Robert A., Korwan, Dan, Downes, T. Valerie, Snyder, William A., Rhea, W. Joe, Chen, Wei, Fisher, John, Bissett, W. Paul, and Reisse, Robert Alan
Abstract:: The Ocean Portable Hyperspectral Imager for Low-Light Spectroscopy (Ocean PHILLS) is a hyperspectral imager specifically designed for imaging the coastal ocean. It uses a thinned, backside-illuminated CCD for high sensitivity and an all-reflective spectrograph with a convex grating in an Offner configuration to produce a nearly distortion-free image. The sensor,...
Resource Type:: Article
Full Text:: Curtiss O. Davis, Jeffrey Bowles, Robert A. Leathers, Dan Korwan, T. Valerie Downes, William A. Snyder, W

ScholarsArchive@OSU

Vicarious calibration of the Ocean PHILLS hyperspectral sensor using a coastal tree-shadow method

Atmospheric Correction Algorithm for Hyperspectral Remote Sensing of Ocean Color from Space

Analysis of a Point-Source Integrating-Cavity Absorption Meter

Spatial and Spectral Resolution Considerations for Imaging Coastal Waters

Derivative analysis of absorption features in hyperspectral remote sensing data of carbonate sediments

Diffuse attenuation coefficient of downwelling irradiance: An evaluation of remote sensing methods.pdf

Euphotic zone depth: Its derivation and implication to ocean-color remote sensing

Influences of salvage logging on forest birds after fire in the eastern Cascades, Oregon

From Meters to Kilometers: A Look at Ocean-Color Scales of Variability, Spatial Coherence, and the Need for Fine-Scale Remote Sensing in Coastal Ocean Optics

Ocean PHILLS hyperspectral imager : design, characterization, and calibration

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