Desert Dust, OSN - Sahara Sand

Practical significance

Interpretation of remote sensing data. Analogues of other planets' atmospheric dust, and dust in comets, asteroids, and circumstellar shells.

Origin

Collected from the roof of the OSN observatory after a dust intrusion in 2004.

Main constituent

Quartz, clay minerals and calcium carbonate

Color

Green powder

Particle size Mie: reff (μm)

4.0

Particle size Mie: veff

1.8

Particle size Fraunhofer: reff (μm)

2.5

Particle size Fraunhofer: veff

2.5

Size distribution plot:

SEM/TEM images:

All SEM/TEM images (zip file)

Scattering matrix (1) wavelength in nm

488.00 nm

Scattering matrix (1) table

Scattering matrix (1) plot:

Scattering matrix (2) wavelength in nm

647.00 nm

Scattering matrix (2) table

Scattering matrix (2) plot:

Synthetic scattering matrix (1) wavelength in nm

488.00nm

Synthetic scattering matrix (1) table M

Synthetic scattering matrix (2) wavelength in nm

647.00nm

Synthetic scattering matrix (2) table M

Refractive index

Estimated to be in the range [1.5 -1.7] + i[0.00001-0.001].

Angle range (deg)

[3,177]

Reference/s