Search Results
You are looking at 1 - 2 of 2 items for
- Author or Editor: Kurt Bullrich x
- Refine by Access: All Content x
Abstract
Model calculations show that the aerosol particles within the lower troposphere usually contribute more than 80% to the total optical thickness of all particles within the atmosphere. For relative humidities higher than 99% within a thin layer of about 80 m thickness, the main contribution to the total optical thickness comes from this layer.
Abstract
Model calculations show that the aerosol particles within the lower troposphere usually contribute more than 80% to the total optical thickness of all particles within the atmosphere. For relative humidities higher than 99% within a thin layer of about 80 m thickness, the main contribution to the total optical thickness comes from this layer.
Abstract
Measurements of the scattering-phase function and of the polarization of skylight in rather strong haze of turbidity type 2, in the wavelength range from 0.38 to 1.76 μ, have been made at Mainz, Germany. As already found earlier, the relative scattering-phase function is independent of wavelength in the visible part of the spectrum. For the increased slope of the phase function from 3 to 30 deg scattering angle in the infrared, however, a sufficient explanation cannot be given.
The polarization was investigated in the sun's vertical, at solar distances of 30, 40, 60, 90 and 120 deg. Theoretical considerations suggest that the observed mean polarization at 90 deg is consistent with a polarization of about 41 per cent independent of wavelength, of haze alone.
The comparison of scattering function and polarization measurements of skylight, and of the industrially contaminated air near the ground as measured by searchlights, suggests different size distribution of natural and anthropogenous air pollution.
Abstract
Measurements of the scattering-phase function and of the polarization of skylight in rather strong haze of turbidity type 2, in the wavelength range from 0.38 to 1.76 μ, have been made at Mainz, Germany. As already found earlier, the relative scattering-phase function is independent of wavelength in the visible part of the spectrum. For the increased slope of the phase function from 3 to 30 deg scattering angle in the infrared, however, a sufficient explanation cannot be given.
The polarization was investigated in the sun's vertical, at solar distances of 30, 40, 60, 90 and 120 deg. Theoretical considerations suggest that the observed mean polarization at 90 deg is consistent with a polarization of about 41 per cent independent of wavelength, of haze alone.
The comparison of scattering function and polarization measurements of skylight, and of the industrially contaminated air near the ground as measured by searchlights, suggests different size distribution of natural and anthropogenous air pollution.
