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  • 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

  • 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

  • Improved determination of cloud-free radiances for oceans

    Creator:
    Burden, Arthur R.
    Abstract:
    Improvements have been made to the spatial coherence method for automatically determining cloud-free ocean radiances in satellite imagery by incorporating the spectral signatures of reflecting surfaces. The spatial coherence method relies on the fact that small-scale cloud-free regions typically exhibit uniform emission and uniform reflection. While small-scale overcast regions typically...
    Resource Type:
    Masters Thesis
    Full Text:
    under the supervision of my advisor, Dr. James Coakley, Jr. Without his support and confidence, I would

  • 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

  • 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

  • A complex signal to noise problem : determining the aerosol indirect effect from observations of ship tracks in AVHRR data

    Creator:
    Walsh, Christopher D.
    Abstract:
    Cloud reflectivity is a function of cloud liquid water content and droplet number concentration. Since cloud droplets form around pre-existing aerosol particles, cloud droplet number concentration depends on the availability of particles that can serve as cloud condensation nuclei. Given constant liquid water amount, increased availability of cloud condensation nuclei...
    Resource Type:
    Masters Thesis
    Full Text:
    Abstract A James A. Coakley, Jr. Cloud reflectivity/i a function of cloud liquid water content and

  • 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

  • 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

  • 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

  • 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