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  • Using ship tracks to characterize the effects of haze on cloud properties

    Creator:
    Segrin, Matthew S.
    Abstract:
    1-km MODIS observations of ship tracks off the west coast of the U.S. are used to characterize changes in cloud visible optical depths, cloud droplet radii, cloud cover fraction, and column cloud liquid water amount as low-level marine clouds respond to particle pollution from underlying ships. This study re-examines the...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________________________ James A. Coakley, Jr. 1-km MODIS observations of ship tracks off the west coast of the U.S

  • Toward the estimation of errors in cloud cover derived by threshold methods

    Creator:
    Chang, Fu-Lung
    Abstract:
    The accurate determination of cloud cover amount is important for characterizing the role of cloud feedbacks in the climate system. Clouds have a large influence on the climate system through their effect on the earth's radiation budget. As indicated by the NASA Earth Radiation Budget Experiment (ERBE), the change in...
    Resource Type:
    Masters Thesis
    Full Text:
    Errors in Cloud Cover Derived by Threshold Methods Abstract appr James A. Cokley, Jr. The accurate

  • The spatial-scale dependence of the observed anisotropy of reflected and emitted radiation

    Creator:
    Ye, Qian
    Abstract:
    The Earth Radiation Budget Experiment (ERBE) uses Angular Dependence Models (ADMs) to convert satellite observed radiances to radiative fluxes at the top of the atmosphere. Owing to errors in scene identification and to the relationship between the spatial scales of cloud systems and the spatial resolution of the ERBE scanner,...
    Resource Type:
    Dissertation
    Full Text:
    . Coakley, Jr. The Earthadiation Budget Experiment (ERBE) uses Angular Dependence Models (ADMs) to convert

  • Satellite infrared measurement of sea surface temperature : empirically evaluating the thin approximation

    Creator:
    Kowalski, Andrew S.
    Abstract:
    Satellite technology represents the only technique for measuring sea surface temperatures (SSTs) on a global scale. SSTs are important as boundary conditions for climate and atmospheric boundary layer models which attempt to describe phenomena of all scales, ranging from local forecasts to predictions of global warming. Historical use of infrared...
    Resource Type:
    Masters Thesis
    Full Text:
    Approved: . James A. Coakley, Jr. Satellite technology represents the only technique for measuring sea

  • Response of marine stratus to successive polluting events by ships

    Creator:
    Sechrist, B.
    Abstract:
    Ship tracks have proven to be an ideal laboratory for studying the response of marine stratocumulus to an increase in aerosol pollution. Here the response of already polluted marine stratocumulus to further pollution was examined by studying the clouds where two ship tracks cross. 78 crossings of ship tracks were...
    Resource Type:
    Masters Thesis
    Full Text:
    . Coakley, Jr. Ship tracks have proven to be an ideal laboratory for studying the response of marine

  • Properties of semitransparent upper-level clouds deduced from multispectral imagery data

    Creator:
    Lin, Xijian
    Abstract:
    A multispectral retrieval method is developed on the 100 km regional scale to extract the temperature, particle size, fractional cover and 11-μm emissivity of clouds which may be semitransparent in the infrared based on emitted radiances. The scheme utilizes the nonlinear relationship between emitted radiances when clouds are semitransparent and...
    Resource Type:
    Dissertation
    Full Text:
    . Coakley, Jr., for his invaluable guidance and support over the course of my graduate study at OSU

  • Properties of marine stratus and stratocumulus derived using collocated MODIS and CALIPSO observations

    Creator:
    Hayes, Christopher R.
    Abstract:
    Adiabatic parcel models suggest specific relationships between cloud thickness and cloud properties. Such relationships govern cloud radiative forcing and thus cloud feedbacks in the climate system. Current remote sensing techniques work well at measuring these properties in low-level cloud systems that are overcast. Significant biases exist, however, when measuring cloud...
    Resource Type:
    Masters Thesis
    Full Text:
    MODIS and CALIPSO Observations. Abstract approved: James A. Coakley, Jr

  • Properties of low-level marine clouds as deduced from advanced very high resolution radiometer satellite observations

    Creator:
    Chang, Fu-Lung
    Abstract:
    A radiation model was developed for retrieving cloud visible optical depth, droplet effective radius, and cloud top emission temperature using AVHRR satellite observations at 0.63, 3.7, and 11 μm. The model was used to determine the sensitivity of the retrieved properties to various approximations often employed in such retrievals. Droplet...
    Resource Type:
    Dissertation
    Full Text:
    Professor, James A. Coakley, Jr., for his invaluable guidance, generous support, and constant encouragement

  • Overestimation of cloud cover in the MODIS cloud product

    Creator:
    Schuetz, Andrea M.
    Abstract:
    The operational processing of MODIS imagery to produce the MOD06 cloud product is based on the assumption that cloudy 1-km pixels are overcast. This assumption is examined using a partly cloudy pixel retrieval scheme, which allows for fractional cloud cover within the 1-km pixels. Cloud flags attached to 250-m MODIS...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________________________ James A. Coakley, Jr. The operational processing of MODIS imagery to produce the MOD06

  • Modeling and application of multispectral oceanic sun glint observations

    Creator:
    Luderer, Gunnar
    Abstract:
    The atmospheric radiative transfer model MOCARAT was developed and is presented in this thesis. MOCARAT employs a Monte Carlo Technique for the accurate modeling of band radiances and reflectances in an atmospheric system with a ruffled ocean surface as a lower boundary. The atmospheric radiative transfer is modeled with consideration...
    Resource Type:
    Masters Thesis
    Full Text:
    to express my sincere gratitude to Prof. James A. Coakley, Jr. for the opportunity to work in his