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A comparison of methods for the measurement of the absorption coefficient in natural waters

Creator:: Pegau, W. Scott, Cleveland, Joan S., Doss, W., Kennedy, C. Dan, Maffione, Robert A., Mueller, James L., Stone, R., Trees, Charles C., Weidermann, Alan D., Wells, Willard H., and Zaneveld, J. Ronald
Abstract:: In the spring of 1992 an optical closure experiment was conducted at Lake Pend Oreille, Idaho. A primary objective of the experiment was to compare techniques for the measurement of the spectral absorption coefficient and other inherent optical properties of natural waters. Daily averages of absorption coefficients measured using six...
Resource Type:: Article
Full Text:: , six readings were obtained by rotating the instrument through 60 ø incre- ments in azimuth. Standard

Universal similarity and the thickness of the viscous sublayer at the ocean floor

Creator:: Chriss, T.M. and Caldwell, Douglas R.
Abstract:: Experiments conducted on the Oregon continental shelf in June 1979 indicate that the boundary layer flow at the seafloor was hydrodynamically smooth. Fine-resolution velocity profiles are used to test the assumption that the flow behaved like a universally similar, neutrally buoyant flow over a smooth wall. The non-dimensional thickness of...
Resource Type:: Article
Full Text:: large as 60% of the true stress. While our experiments are, to our knowledge, the only stud- ies in

Toward closure of the inherent optical properties of natural waters

Creator:: Pegau, W. Scott, Zaneveld, J. Ronald, and Voss, Kenneth J.
Abstract:: A fundamental relationship of inherent optical properties (IOP) is that the beam attenuation coefficient is the sum of the volume absorption and scattering coefficients (c = a + b). A relative calibration of a set of instruments can be provided using this IOP closure equation. Measurement of the true beam...
Resource Type:: Article
Full Text:: over 3 mg/m 3 . The chlorophyll a levels remained above 1 mg/m3 down to depths of nearly 60 m. The

Wind-driven surface transport in stratified closed basins: Direct versus residual circulations

Creator:: Strub, P. Ted and Powell, Thomas M.
Abstract:: A numerical model has been used to investigate the wind-driven circulation in a stratified basin of moderate size, Lake Tahoe, California-Nevada. Two types of circulation are identified: "direct" circulations, in which the current directions remain relatively constant and the mean circulation formed over several days resembles the instantaneous circulation, and...
Resource Type:: Article
Full Text:: fields from a se- quence of five images covering 60 hours in July 1980. The time and data of each image

A theoretical derivation of the dependence of the remotely sensed reflectance of the ocean on the inherent optical properties

Creator:: Zaneveld, J. Ronald
Abstract:: An expression for the ratio of the upwelling nadir radiance L(π, z) and the downwelling scalar irradiance Eod(Z) is derived from the following equation of radiative transfer. This expression is given by RSR(z)=[L(π, z)]/Eod(Z) = [fb(z)bb(z)]/2π[k(π, z) + c(z) – fL(z)bf(z)], where bb(z) is the backscattering coefficient, k(π, z) is...
Resource Type:: Article

The influence of optical water type on the heating rate of a constant depth mixed layer

Creator:: Zaneveld, J. Ronald, Kitchen, James C., and Pak, Hasong
Abstract:: A simple heat budget model for a radiation-dominated mixed layer of constant depth is presented. In this model the influence of the vertical irradiance (heat flux) profile is examined by means of the Jerlov [1976] optical water type classification. It is shown that the vertical irradiance profile is important in...
Resource Type:: Article

Intraseasonal variations of water vapor in the tropical upper troposphere and tropopause region

Creator:: Mote, Philip W., Clark, Hannah L., Dunkerton, Timothy J., Harwood, Robert S., and Pumphrey, Hugh C.
Abstract:: We show the signature of the tropical intraseasonal oscillation (TIO) in upper tropospheric moisture and dynamical fields, roughly between 200 and 100 hPa. Relationships among these fields are examined using lag-correlation analysis and using multivariate extended empirical orthogonal functions (MEEOFs), which maximize the shared explained variance among several fields for...
Resource Type:: Article
Full Text:: appearance of coherent, eastward moving variations in winds and convection with a timescale of 30-60 days

Tropical data assimilation experiments with simulated data: The impact of the Tropical Ocean and Global Atmosphere Thermal Array for the Ocean

Creator:: Miller, Robert N.
Abstract:: A series of observing system simulation experiments (OSSE) is performed on a simulated data set which was designed to mimic the wind-forced response of the tropical Pacific ocean. This data set was constructed by adding random perturbations to the FSU monthly mean pseudostress anomaly data. These perturbed pseudostress anomaly fields...
Resource Type:: Article
Full Text:: information such as deep measurements, error variances of more than 60% of the total signal variance could be

A model-data comparison of gross primary productivity: Results from the North American Carbon Program site synthesis

Creator:: Schaefer, Kevin, Schwalm, Christopher R., Williams, Chris, Arain, M. Altaf, Barr, Alan, Chen, Jing M., Davis, Kenneth J., Dimitrov, Dimitre, Hilton, Timothy W., Hollinger, David Y., Humphreys, Elyn, Poulter, Benjamin, Raczka, Brett M., Richardson, Andrew D., Sahoo, Alok, Thornton, Peter, Vargas, Rodrigo, Verbeeck, Hans, Anderson, Ryan, Baker, Ian, Black, T. Andrew, Bolstad, Paul, Chen, Jiquan, Curtis, Peter S., Desai, Ankur R., Dietze, Michael, Dragoni, Danilo, Gough, Christopher, Grant, Robert F., Gu, Lianhong, Jain, Atul, Kucharik, Chris, Law, Beverly, Liu, Shuguang, Lokipitiya, Erandathie, Margolis, Hank A., Matamala, Roser, McCaughey, J. Harry, Monson, Russ, Munger, J. William, Oechel, Walter, Peng, Changhui, Price, David T., Ricciuto, Dan, Riley, William J., Roulet, Nigel, Tian, Hanqin, Tonitto, Christina, Torn, Margaret, Weng, Ensheng, and Zhou, Xiaolu
Abstract:: Accurately simulating gross primary productivity (GPP) in terrestrial ecosystem models is critical because errors in simulated GPP propagate through the model to introduce additional errors in simulated biomass and other fluxes. We evaluated simulated, daily average GPP from 26 models against estimated GPP at 39 eddy covariance flux tower sites...
Resource Type:: Article

Seasonal dynamics of the near-surface alongshore flow off central Chile

Creator:: Aguirre, Catalina, Pizarro, Oscar, Strub, Paul T., Garreaud, Rene, and Barth, John A.
Abstract:: The seasonal cycle of the near-surface circulation off central Chile was analyzed using satellite altimetry and an oceanic model. To evaluate the role of the wind stress curl on the circulation we performed two identical simulations except for the wind-forcing: the "control run" used long-term monthly mean wind stress and...
Resource Type:: Article
Full Text:: Concepción ADCP 37°03′S 74°50′W Nov 2003 Oct 2006 50 4600 Station 18 ADCP 36°28′S 73°10′W Jan 2009 Jan 2011 6

ScholarsArchive@OSU

A comparison of methods for the measurement of the absorption coefficient in natural waters

Universal similarity and the thickness of the viscous sublayer at the ocean floor

Toward closure of the inherent optical properties of natural waters

Wind-driven surface transport in stratified closed basins: Direct versus residual circulations

A theoretical derivation of the dependence of the remotely sensed reflectance of the ocean on the inherent optical properties

The influence of optical water type on the heating rate of a constant depth mixed layer

Intraseasonal variations of water vapor in the tropical upper troposphere and tropopause region

Tropical data assimilation experiments with simulated data: The impact of the Tropical Ocean and Global Atmosphere Thermal Array for the Ocean

A model-data comparison of gross primary productivity: Results from the North American Carbon Program site synthesis

Seasonal dynamics of the near-surface alongshore flow off central Chile

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