Multiple scattering effects on flat conducting surfaces contaminated by small spherical particles

1996 ◽  
Author(s):  
E. M. Ortiz
Keyword(s):  
Multiple Scattering ◽  
Spherical Particles ◽  
Scattering Effects ◽  
Multiple Scattering Effects

scholarly journals Evaluation of radar multiple scattering effects in Cloudsat configuration

2006 ◽  
Vol 6 (4) ◽  
pp. 8125-8154
Author(s):  
A. Battaglia ◽  
M. O. Ajewole ◽  
C. Simmer
Keyword(s):  
Multiple Scattering ◽  
Mie Theory ◽  
Single Scattering ◽  
Spherical Particles ◽  
Test Bed ◽  
High Attenuation ◽  
Scattering Effects ◽  
Wakasa Bay ◽  
The Cross ◽  
Multiple Scattering Effects

Abstract. MonteCarlo simulations have been performed to evaluate the importance of multiple scattering effects in co- and cross-polar radar returns for 94GHz radars in Cloudsat and airborne configurations. Thousands of vertically structured profiles derived from some different cloud resolving models are used as a test-bed. Mie theory is used to derive the single scattering properties of the atmospheric hydrometeors. Multiple scattering effects in the cross polar channel (reflectivity enhancement) are particularly elusive, especially in airborne configuration. They can be quite consistent in satellite configurations, like Cloudsat, especially in regions of high attenuation and in the presence of highly forward scattering layers associated with snow and graupel particles. When the cross polar returns are analysed, high LDR values appear both in space and in airborne configurations. The LDR signatures are footprints of multiple scattering effects since they cannot be explained by single scattering computations, even including non-spherical particles. We see these signatures confirmed by some experimental data collected during the Wakasa Bay experiment. Multiple scattering effects can be important for Clousat applications like rainfall and snowfall retrievals since single scattering based algorithms will be otherwise burdened by positive biases.

scholarly journals Evaluation of radar multiple scattering effects in Cloudsat configuration

2007 ◽  
Vol 7 (7) ◽  
pp. 1719-1730 ◽  
Author(s):  
A. Battaglia ◽  
M. O. Ajewole ◽  
C. Simmer
Keyword(s):  
Multiple Scattering ◽  
Mie Theory ◽  
Single Scattering ◽  
Spherical Particles ◽  
Test Bed ◽  
High Attenuation ◽  
Scattering Effects ◽  
Wakasa Bay ◽  
Linear Depolarization Ratio ◽  
Multiple Scattering Effects

Abstract. MonteCarlo simulations have been performed to evaluate the importance of multiple scattering effects in co- and cross-polar radar returns for 94 GHz radars in Cloudsat and airborne configurations. Thousands of vertically structured profiles derived from some different cloud resolving models are used as a test-bed. Mie theory is used to derive the single scattering properties of the atmospheric hydrometeors. Multiple scattering effects in the co-polar channel (reflectivity enhancement) are particularly elusive, especially in airborne configuration. They can be quite consistent in satellite configurations, like CloudSat, especially in regions of high attenuation and in the presence of highly forward scattering layers associated with snow and graupel particles. When the cross polar returns are analysed [but note that CloudSat does not measure any linear depolarization ratio (LDR hereafter)], high LDR values appear both in space and in airborne configurations. The LDR signatures are footprints of multiple scattering effects; although depolarization values as high as −5 dB can be generated including non-spherical particles in single scattering modelling, multiple scattering computations can produce values close to complete depolarization (i.e. LDR=0 dB). Our simulated LDR profiles from an air-borne platform well reproduce, in a simple frame, some experimental observations collected during the Wakasa Bay experiment. Since LDR instrumental uncertainties were not positively accounted for during that experiment, more focused campaigns with air-borne polarimetric radar are recommended. Multiple scattering effects can be important for CloudSat applications like rainfall and snowfall retrievals since single scattering based algorithms will be otherwise burdened by positive biases.

MULTIPLE SCATTERING EFFECTS IN THE COBALT K-EDGE EXAFS OF METAL CARBONYL COMPLEXES

1986 ◽  
Vol 47 (C8) ◽  
pp. C8-589-C8-592
Author(s):  
N. BINSTED ◽  
S. L. COOK ◽  
J. EVANS ◽  
R. J. PRICE ◽  
G. N. GREAVES
Keyword(s):  
Multiple Scattering ◽  
Metal Carbonyl ◽  
Carbonyl Complexes ◽  
Metal Carbonyl Complexes ◽  
Scattering Effects ◽  
Multiple Scattering Effects

Multiple-scattering effects in mean-lifetime experiments by blocking technique

1972 ◽  
Vol 10 (2) ◽  
pp. 177-188 ◽  
Author(s):  
E. Fuschini ◽  
F. Malaguti ◽  
C. Maroni ◽  
I. Massa ◽  
A. Uguzzoni ◽  
...  
Keyword(s):  
Multiple Scattering ◽  
Scattering Effects ◽  
Mean Lifetime ◽  
Multiple Scattering Effects
Sign in / Sign up

Export Citation Format

Share Document