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  • Identification of layered cloud occurrences from the Lidar In-Space Technology Experiment and advanced very high resolution radiometer imagery

    Creator:
    Stevermer, Amy J.
    Abstract:
    Realistic assessment of the vertical distribution of clouds, particularly the occurrence of multi-layered systems, is critical for accurate calculations of radiative transfer in general circulation models. Such information is also useful in the design and improvement of satellite retrieval techniques. Current methods for retrieving cloud properties from satellite data assume...
    Resource Type:
    Masters Thesis
    Full Text:
    Tremendous thanks to: My advisor, Dr. James A. Coakley, Jr., for his guidance and support throughout this

  • 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

  • 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

  • Modeled and observed longwave radiances at the top of the atmosphere

    Creator:
    Stone, Kenneth A.
    Abstract:
    One method of estimating the longwave radiative heating of the atmosphere is to combine satellite observations of emitted radiances with those computed from synoptic temperature and humidity profiles. Modeled and observed radiances are brought into agreement by altering cloud properties or even by adjusting the temperature and water vapor profiles....
    Resource Type:
    Masters Thesis
    Full Text:
    supported by NASA ERBE NAS1-18992. I would like to thank my major professor, Dr. James A. Coakley, for his

  • 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

  • INDOEX aerosol optical depths and radiative forcing derived from AVHRR

    Creator:
    Tahnk, William Richard
    Abstract:
    The Indian Ocean Experiment (INDOEX) had as a primary objective determining the radiative forcing due to anthropogenic aerosols over climatologically significant space and time scales: the Indian Ocean during the winter monsoon, January-March. During the winter monsoon, polluted, low-level air from the Asian subcontinent blows over the Arabian Sea and...
    Resource Type:
    Dissertation
    Full Text:
    Optical Depths and Radiative Forcing Derived From A \TIJDD Abstract James 14'Coakley, Jr. The Indian

  • 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

  • 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

  • Inference of Marine Stratus Cloud Optical Depths from Satellite Measurements: Does 1D Theory Apply?

    Creator:
    Loeb, Norman G. and Coakley, J. A., Jr.
    Abstract:
    The validity of plane-parallel (1D) radiative transfer theory for cloudy atmospheres is examined by directly comparing calculated and observed visible reflectances for one month of Global Area Coverage Advanced Very High Resolution Radiometer satellite observations of marine stratus cloud layers off the coasts of California, Peru, and Angola. Marine stratus...
    Resource Type:
    Article
    Full Text:
    Measurements: Does 1D Theory Apply? NORMAN G. LOEB* AND J. A. COAKLEY JR. College of Oceanic and Atmospheric