Physical modeling of passive polarimetric microwave observations of the atmosphere with respect to the third Stokes parameter
Article first published online: 7 DEC 2012
Copyright 1998 by the American Geophysical Union.
Volume 33, Issue 3, pages 677–695, May-June 1998
How to Cite
1998), Physical modeling of passive polarimetric microwave observations of the atmosphere with respect to the third Stokes parameter, Radio Sci., 33(3), 677–695, doi:10.1029/97RS03318., , , and (
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Accepted: 17 NOV 1997
- Manuscript Received: 12 MAR 1997
Measurements of upwelling and downwelling rain brightness temperatures show significant differences between horizontal and vertical polarization, which depend on wavelength and rain rate. These measurements are related to the first and second Stokes parameter. Also, the third Stokes parameter of atmospheric microwave emission will have measurable values under certain conditions. A polarimetric model for the description of the microwave emission and scattering by hydrometeors, including all four Stokes parameters, is presented. This model is applied to the scenario of plane layers of ice crystals and rain above a rough surface. The magnitudes of the third Stokes parameter for microwave emission from oriented nonspherical rain drops and for scattering by ice crystals are estimated. It is shown that the third Stokes parameter for rain is dominated by the first azimuthal harmonic of the emission vector. Finally, an algorithm for the computation of polarized brightness temperatures emanating from cylindrical rain cells above a surface is developed.