Analysis of Visibility Observation Methods PDF Download
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Author: Frederick C. Hochreiter
Publisher:
ISBN:
Category : Measuring instruments
Languages : en
Pages : 52
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Book Description
This report concludes the first phase of the objective visibility observation task. It was primarily a literature search of state-of-the-art in visibility observations and measurements. This portion of the task was designed to provide background information on which to base future phases directed toward automated visibility observations.
Author: Frederick C. Hochreiter
Publisher:
ISBN:
Category : Measuring instruments
Languages : en
Pages : 52
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Book Description
This report concludes the first phase of the objective visibility observation task. It was primarily a literature search of state-of-the-art in visibility observations and measurements. This portion of the task was designed to provide background information on which to base future phases directed toward automated visibility observations.
Author: Frederick C. Hochreiter
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 0
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Author: United States. Environmental Science Services Administration
Publisher:
ISBN:
Category :
Languages : en
Pages : 52
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Author: Katherine Melvina Huntsinger Blackford
Publisher:
ISBN:
Category :
Languages : en
Pages : 184
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1126
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: Dominick A. Vincent
Publisher:
ISBN: 9781423547655
Category :
Languages : en
Pages : 69
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Book Description
The objective of this thesis is to investigate the viability of using contrast reduction in multi-spectral satellite observations to characterize surface visibility reduction due to heavy aerosol loading. Two methods are explored. First, the spectral distribution of standard deviation of surface reflectance over a homogeneous background (urban, agriculture, or forested) is plotted for three aerosol conditions (dust, smoke, and low aerosol loading). Second, the same cases are analyzed using a pixel-to-pixel differencing of surface reflectance. The spectral distributions of the means for the resulting difference fields are constructed. Each aerosol type was found to exhibit a relatively unique spectral distribution for both methods. Each background was found to exhibit a characteristic amount of contrast in the absence of heavy aerosol loading. The unique spectral characteristics for each aerosol- background combination may be correlated to aerosol optical depths or surface visibilities with corrections for sensor view angle variations, Rayleigh scattering, and masking of clouds and surface water. The spectral distribution- aerosol optical depth correlation can be used to build an empirical model for aerosol optical depth and surface visibility retrievals from satellite observations. This method may be applied to multi-spectral or panchromatic imagery, unlike current aerosol optical depth retrievals over land.
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1250
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Author:
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 1184
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Author: United States. National Weather Service
Publisher:
ISBN:
Category : Meteorology
Languages : en
Pages : 104
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Author: United States. Environmental Science Services Administration
Publisher:
ISBN:
Category : Climatology
Languages : en
Pages : 144
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