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Determination of atmospheric aerosol characteristics from the polarization of scattered radiation
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | McCormick, M. P. Harris Jr., F. S. |
| Copyright Year | 1973 |
| Description | Aerosols affect the polarization of radiation in scattering, hence measured polarization can be used to infer the nature of the particles. Size distribution, particle shape, real and absorption parts of the complex refractive index affect the scattering. From Lorenz-Mie calculations of the 4-Stokes parameters as a function of scattering angle for various wavelengths the following polarization parameters were plotted: total intensity, intensity of polarization in plane of observation, intensity perpendicular to the plane of observation, polarization ratio, polarization (using all 4-Stokes parameters), plane of the polarization ellipse and its ellipticity. A six-component log-Gaussian size distribution model was used to study the effects of the nature of the polarization due to variations in the size distribution and complex refractive index. Though a rigorous inversion from measurements of scattering to detailed specification of aerosol characteristics is not possible, considerable information about the nature of the aerosols can be obtained. Only single scattering from aerosols was used in this paper. Also, the background due to Rayleigh gas scattering, the reduction of effects as a result of multiple scattering and polarization effects of possible ground background (airborne platforms) were not included. |
| File Size | 90260 |
| Page Count | 2 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20160007586 |
| Archival Resource Key | ark:/13960/t98678x2v |
| Language | English |
| Publisher Date | 1973-06-04 |
| Access Restriction | Open |
| Subject Keyword | Earth Resources And Remote Sensing Meteorology And Climatology Ellipticity Rayleigh Scattering Atmospheric Effects Size Distribution Backscattering Scattering Refractivity Aerosols Linear Polarization Ntrs Nasa Technical Reports ServerĀ (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |