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dc.contributor.authorHaeffelin, Martial P. A.en_US
dc.date.accessioned2014-03-14T20:21:21Z
dc.date.available2014-03-14T20:21:21Z
dc.date.issued1996-08-27en_US
dc.identifier.otheretd-165711489632471en_US
dc.identifier.urihttp://hdl.handle.net/10919/30312
dc.description.abstractTwo aspects of the study of the Earth radiation budget and the effects of clouds on our climate system are considered in this dissertation: instrumentation and data interpretation. Numerical models have been developed to characterize the optical/thermal-radiative behavior, the dynamic electrothermal response and the structural thermal transients of radiometric channels. These models, applied to a satellite-borne scanning radiometer, are used to determine the instrument point spread function and the potential for optical and thermal-radiative contamination of the signal due to out-of-field radiation and emission from the radiometer structure. The capabilities of the model are demonstrated by scanning realistic Earth scenes. In addition, the optical/thermal-radiative model is used for the development of an infrared field radiometer to interpret results from the experimental characterization of the instrument. The model allowed the sensitivity of the instrument response to assembly uncertainties to be determined. Data processing consists of converting radiometric data into estimates of the flux at the top of the atmosphere. Primary error sources are associated with the procedures used to compensate for unsampled data. The time interpolation algorithm applied to a limited number of observations can produce significantly biased estimates of monthly mean fluxes. A diurnal interpolation protocol using correlative ISCCP cloudiness data is developed to compensate for sparse temporal sampling of Earth radiation budget data. The bias is shown to be significantly reduced in regions where the variability of the cloud cover is well accounted for by ISCCP data.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartappendix.pdfen_US
dc.relation.haspartetd.pdfen_US
dc.rightsI hereby grant to Virginia Tech or its agents the right to archive and to make available my thesis or dissertation in whole or in part in the University Libraries in all forms of media, now or hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertation.en_US
dc.subjectearth radiation budgeten_US
dc.subjectremote sensingen_US
dc.subjectradiometric channelsen_US
dc.subjectmonte-carlo ray traceen_US
dc.subjecttemporal samplingen_US
dc.subjectERBE ISCCP dataen_US
dc.titleA Study of Earth Radiation Budget Radiometric Channel Performance and Data Interpretation Protocolsen_US
dc.typeDissertationen_US
dc.contributor.departmentMechanical Engineeringen_US
dc.description.degreePh. D.en_US
thesis.degree.namePh. D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineMechanical Engineeringen_US
dc.contributor.committeechairMahan, James Roberten_US
dc.contributor.committeememberScott, Elaine P.en_US
dc.contributor.committeememberBrogniez, G.en_US
dc.contributor.committeememberVanLandingham, Hugh F.en_US
dc.contributor.committeememberLegrand, M.en_US
dc.contributor.committeememberKandel, R. S.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-165711489632471/en_US
dc.date.sdate1998-07-13en_US
dc.date.rdate1996-08-27
dc.date.adate1996-08-27en_US


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