Scattering Properties of Jovian Tropospheric Cloud Particles from Cassini/ISS: Mie Scattering Phase Function and Particle Size in the South Tropical Zone

Details Scattering Properties of Jovian Tropospheric Cloud Particles from Cassini/ISS: Mie Scattering Phase Function and Particle Size in the South Tropical Zone Scattering Properties of Jovian Tropospheric Cloud Particles from Cassini/ISS: Mie Scattering Phase Function and Particle Size in the South Tropical Zone

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.3104s&link_type=abstract

American Astronomical Society, DPS meeting #42, #31.04; Bulletin of the American Astronomical Society, Vol. 42, p.1010

Other

Scientific paper

It is essential to know scattering properties (e.g., scattering phase function) of clouds for determination of vertical cloud structure. However, we cannot derive those from ground-based and Earth-orbit observations because of the limitation of solar phase angle as viewed from the Earth. Then, most previous studies have used the scattering phase function deduced from the Pioneer 10/IPP data (blue: 440 nm, red: 640nm) [Tomasko et al., 1978].
There are two shortcomings in the Pioneer scattering phase function. One is that we have to use this scattering phase function at red as a substitute for analyses of imaging photometry using CH4 bands (center: 727 and 890 nm), although clouds should have wavelength dependency. The other is that the red pass band of IPP was so broad (595-720 nm) that this scattering phase function in red just show wavelength-averaged scattering properties of clouds.
To provide a new reference scattering phase function with wavelength dependency, we have analyzed the Cassini/ISS data in BL1 (451 nm), CB1 (619 nm), CB2 (750 nm), and CB3 (938 nm) over wide solar phase angles (3-141 degrees) during its Jovian flyby in 2000-2001.
A simple cloud model which consists of a thin stratospheric haze, a semi-infinite cloud, and an intervening Rayleigh gas layers is adopted. Applying Mie theory to scattering by clouds, we deduce the scattering phase function of cloud and effective particle size in the South Tropical Zone. When we use the nominal value of reflective index for ammonia ice (Martonchik et al., 1984), we cannot obtain reasonable fit to the observed limb-darkening profiles. This would imply that we should consider possible effects on the impurity and/or the nonsphericiy of clouds.
In this presentation, we will show detail model description and these results. Finally, we discuss scattering properties of clouds through comparison with previous works.

Affiliated with

Also associated with

No associations

Rating

Scattering Properties of Jovian Tropospheric Cloud Particles from Cassini/ISS: Mie Scattering Phase Function and Particle Size in the South Tropical Zone does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Scattering Properties of Jovian Tropospheric Cloud Particles from Cassini/ISS: Mie Scattering Phase Function and Particle Size in the South Tropical Zone, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scattering Properties of Jovian Tropospheric Cloud Particles from Cassini/ISS: Mie Scattering Phase Function and Particle Size in the South Tropical Zone will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1122926