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Estimation of Vegetation Aerodynamic Roughness of Natural Regions Using Frontal Area Density Determined from Satellite Imagery by Michael F. Jasinski, Richard Crago, Nasa Technical Reports Server (Ntrs) - Paperback
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Estimation of Vegetation Aerodynamic Roughness of Natural Regions Using Frontal Area Density Determined from Satellite Imagery by Michael F. Jasinski, Richard Crago, Nasa Technical Reports Server (Ntrs) - Paperback

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Category Type
Politics
ISBN
9781287273905
Author
Michael F. Jasinski, Richard Crago, Nasa Technical Reports Server (Ntrs)
Publisher
Bibliogov
Description:

Parameterizations of the frontal area index and canopy area index of natural or randomly distributed plants are developed, and applied to the estimation of local aerodynamic roughness using satellite imagery. The formulas are expressed in terms of the subpixel fractional vegetation cover and one non-dimensional geometric parameter that characterizes the plant's shape. Geometrically similar ...

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    Specifications

    Category Type
    Politics
    ISBN
    9781287273905
    Item EAN
    2724352868467
    People
    Author
    Michael F. Jasinski, Richard Crago, Nasa Technical Reports Server (Ntrs)
    People
    Publisher
    Bibliogov
    Category Type
    Politics
    ISBN
    9781287273905
    Item EAN
    2724352868467
    People
    Author
    Michael F. Jasinski, Richard Crago, Nasa Technical Reports Server (Ntrs)
    People
    Publisher
    Bibliogov
    Technical Information
    Binding
    Paperback
    Languages and countries
    Book Language
    English
    Read more
  •  

    Description:

    Parameterizations of the frontal area index and canopy area index of natural or randomly distributed plants are developed, and applied to the estimation of local aerodynamic roughness using satellite imagery. The formulas are expressed in terms of the subpixel fractional vegetation cover and one

    Parameterizations of the frontal area index and canopy area index of natural or randomly distributed plants are developed, and applied to the estimation of local aerodynamic roughness using satellite imagery. The formulas are expressed in terms of the subpixel fractional vegetation cover and one non-dimensional geometric parameter that characterizes the plant's shape. Geometrically similar plants and Poisson distributed plant centers are assumed. An appropriate averaging technique to extend satellite pixel-scale estimates to larger scales is provided. ne parameterization is applied to the estimation of aerodynamic roughness using satellite imagery for a 2.3 sq km coniferous portion of the Landes Forest near Lubbon, France, during the 1986 HAPEX-Mobilhy Experiment. The canopy area index is estimated first for each pixel in the scene based on previous estimates of fractional cover obtained using Landsat Thematic Mapper imagery. Next, the results are incorporated into Raupach's (1992, 1994) analytical formulas for momentum roughness and zero-plane displacement height. The estimates compare reasonably well to reference values determined from measurements taken during the experiment and to published literature values. The approach offers the potential for estimating regionally variable, vegetation aerodynamic roughness lengths over natural regions using satellite imagery when there exists only limited knowledge of the vegetated surface.

    Product Features:
    • Category: Politics
    • Binding: Paperback
    • Language of Text: English
    • Author(s): Michael F. Jasinski, Richard Crago, Nasa Technical Reports Server (Ntrs)
    • Publisher: Bibliogov
    • ISBN: 9781287273905
    • Number of Pages: 44
    • Dimensions: 9.69 x 7.44 x 0.09 inches
 

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