Statistics – Applications
Scientific paper
Feb 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979sci...203..792k&link_type=abstract
Science, vol. 203, Feb. 23, 1979, p. 792-795.
Statistics
Applications
13
Particle Size Distribution, Precipitation Particle Measurement, Venus Clouds, Aerosols, Cloud Physics, Laser Applications, Pioneer Venus Spacecraft, Size Determination, Spectroscopic Analysis, Venus, Clouds, Pioneer Venus, Particles, Sulfur, Size Distributions, Spectrometers, Sulfuric Acid, Aerosols, Cloud Layers
Scientific paper
The cloud particle size spectrometer flown on the large sounder probe during the Pioneer Venus mission provided detailed microstructural data on the Venus cloud system. The instrument measured particle size and number density in the clouds and lower atmosphere of Venus as a function of altitude. The spectrometer is an in-situ measuring device capable of high-resolution measurements of particle size in the range of 0.5 to 500 micrometers. In the primary measurement, the shadows of laser-illuminated particles are imaged onto a linear photodiode array. A working interpretation of the middle and lower clouds and the lower haze is suggested. The large sulfur particles created near 57 km are slowly descending. As they reach the region of 51 km, they begin to evaporate, and near 48 km the residues melt to form the particles of the lower haze.
Hunten Don M.
Knollenberg Robert G.
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