Index Catalog // ScholarsArchive@OSU

Aerosol optical depth and direct radiative forcing for INDOEX derived from AVHRR: Observations, January–March 1996–2000

Creator:: Tahnk, William R. and Coakley, James A., Jr.
Abstract:: Visible and near infrared reflectances from NOAA-14 Advanced Very High Resolution Radiometer (AVHRR) daytime passes are used to derive optical depths at 0.55 μm, an index of aerosol type, continental or marine, and the direct effect of the aerosol on the top of the atmosphere and surface solar radiative fluxes...
Resource Type:: Article
Full Text:: for INDOEX derived from AVHRR: Observations, January–March 1996–2000 William R. Tahnk and James A

Instability and Diapycnal Momentum Transport in a Double-Diffusive, Stratified Shear Layer

Creator:: Smyth, William D. and Kimura, Satoshi
Abstract:: The linear stability of a double-diffusively stratified, inflectional shear flow is investigated. Double-diffusive stratification has little effect on shear instability except when the density ratio R[subscript]ρ is close to unity. Double-diffusive instabilities have significant growth rates and can represent the fastest-growing mode even in the presence of inflectionally unstable shear...
Resource Type:: Article
Full Text:: -Diffusive, Stratified Shear Layer WILLIAM D. SMYTH AND SATOSHI KIMURA College of Oceanic and Atmospheric

Effects of threshold retrievals on estimates of the aerosol indirect radiative forcing

Creator:: Matheson, Mark A., Coakley, James A., and Tahnk, William R.
Abstract:: Empirical estimates of the aerosol indirect radiative forcing often rely on threshold cloud retrievals applied to multispectral satellite imagery data. In such retrievals, pixels having radiances that surpass prescribed thresholds are assumed to be overcast even if they are only partially cloud covered. This assumption leads to cloud visible optical...
Resource Type:: Article
Full Text:: aerosol indirect radiative forcing Mark A. Matheson,1,2 James A. Coakley Jr.,1 and William R. Tahnk1

Morning-to-Afternoon Evolution of Marine Stratus Polluted by Underlying Ships: Implications for the Relative Lifetimes of Polluted and Unpolluted Clouds

Creator:: Christensen, Matthew W., Coakley, James A., Jr., and Tahnk, William R.
Abstract:: Ship tracks appearing in both the morning and afternoon Moderate Resolution Imaging Spectroradiometer (MODIS) imagery for the Pacific Ocean off the west coast of the United States were used to study the morning-to-afternoon evolution of marine stratus polluted by underlying ships and nearby uncontaminated stratus. Analyzed 925-hPa winds were used...
Resource Type:: Article
Full Text:: Clouds MATTHEW W. CHRISTENSEN, JAMES A. COAKLEY JR., AND WILLIAM R. TAHNK College of Oceanic and

Aerosol and cloud property relationships for summertime stratiform clouds in the northeastern Atlantic from Advanced Very High Resolution Radiometer observations

Creator:: Matheson, Mark A., Coakley, James A., and Tahnk, William R.
Abstract:: Advanced Very High Resolution Radiometer (AVHRR) 4-km data collected over the northeastern Atlantic off the coast of the Iberian Peninsula for May to August 1995 were used to investigate the feasibility of empirically deriving estimates of the aerosol indirect radiative forcing. A retrieval scheme was used to derive cloud visible...
Resource Type:: Article
Full Text:: observations Mark A. Matheson, James A. Coakley Jr., and William R. Tahnk College of Oceanic and Atmospheric

Multiyear Advanced Very High Resolution Radiometer observations of summertime stratocumulus collocated with aerosols in the northeastern Atlantic

Creator:: Matheson, Mark A., Coakley, James A., and Tahnk, William R.
Abstract:: Advanced Very High Resolution Radiometer (AVHRR) 4-km data were collected over the northeast Atlantic for May–August 1995–1999. Aerosol optical depth at 0.55 μm was retrieved in pixels identified as being cloud-free ocean. In pixels identified as containing clouds from single-layered, low-level cloud systems over oceans, the following cloud properties were...
Resource Type:: Article
Full Text:: . Matheson,1,2 James A. Coakley Jr.,1 and William R. Tahnk1 Received 15 November 2005; revised 18 April 2006

Turbulence in a Sheared, Salt-Fingering-Favorable Environment: Anisotropy and Effective Diffusivities

Creator:: Kimura, Satoshi, Smyth, William, and Kunze, Eric
Abstract:: Direct numerical simulations (DNS) of a shear layer with salt-fingering-favorable stratification have been performed for different Richardson numbers Ri and density ratios R[subscript]p. In the absence of shear (Ri = oo), the primary instability is square planform salt fingering, alternating cells of rising and sinking fluid. In the presence of...
Resource Type:: Article
Full Text:: -Favorable Environment: Anisotropy and Effective Diffusivities SATOSHI KIMURA AND WILLIAM SMYTH College of

Hyperspectral Imager for the Coastal Ocean: instrument description and first images

Creator:: Lucke, Robert L., Corson, Michael, McGlothlin, Norman R., Butcher, Steve D., Wood, Daniel L., Korwan, Daniel R., Li, Rong R., Snyder, William A., Davis, Curt O., and Chen, Davidson T.
Abstract:: The Hyperspectral Imager for the Coastal Ocean (HICO) is the first spaceborne hyperspectral sensor designed specifically for the coastal ocean and estuarial, riverine, or other shallow-water areas. The HICO generates hyperspectral images, primarily over the 400–900 nm spectral range, with a ground sample distance of ≈90 m (at nadir) and a high...
Resource Type:: Article
Full Text:: description and first images Robert L. Lucke,1 Michael Corson,1 Norman R. McGlothlin,2 Steve D. Butcher,2

Ocean distribution of the American shad (Alosa sapidissima) along the Pacific coast of North America

Creator:: Pearcy, William G. and Fisher, Joseph P.
Abstract:: We examined the incidental catches of American shad (Alosa sapidissima) taken during research cruises and in commercial and recreational landings along the Pacific coast of North America during over 30 years of sampling. Shad, an introduced species, was mainly found over the shallow continental shelf, and largest catches and highest...
Resource Type:: Article
Full Text:: William G. Pearcy (contact author)1 Joseph P. Fisher2 Email address for contact author: wgpearcy

Length scales of turbulence in stably stratified mixing layers

Creator:: Smyth, William D. and Moum, James N.
Abstract:: Turbulence resulting from Kelvin–Helmholtz instability in layers of localized stratification and shear is studied by means of direct numerical simulation. Our objective is to present a comprehensive description of the turbulence evolution in terms of simple, conceptual pictures of shear–buoyancy interaction that have been developed previously based on assumptions of...
Resource Type:: Article
Full Text:: 2000 Length scales of turbulence in stably stratified mixing layers William D. Smytha) and James N

ScholarsArchive@OSU

Aerosol optical depth and direct radiative forcing for INDOEX derived from AVHRR: Observations, January–March 1996–2000

Instability and Diapycnal Momentum Transport in a Double-Diffusive, Stratified Shear Layer

Effects of threshold retrievals on estimates of the aerosol indirect radiative forcing

Morning-to-Afternoon Evolution of Marine Stratus Polluted by Underlying Ships: Implications for the Relative Lifetimes of Polluted and Unpolluted Clouds

Aerosol and cloud property relationships for summertime stratiform clouds in the northeastern Atlantic from Advanced Very High Resolution Radiometer observations

Multiyear Advanced Very High Resolution Radiometer observations of summertime stratocumulus collocated with aerosols in the northeastern Atlantic

Turbulence in a Sheared, Salt-Fingering-Favorable Environment: Anisotropy and Effective Diffusivities

Hyperspectral Imager for the Coastal Ocean: instrument description and first images

Ocean distribution of the American shad (Alosa sapidissima) along the Pacific coast of North America

Length scales of turbulence in stably stratified mixing layers

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