Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Heinrich Quenzel"'
Publikováno v:
Applied optics. 20(8)
The information content of a set of optical data with respect to the particle size distribution is discussed in a numerical study. We show how the kernels of the integral equation relating size distribution and optical properties can be used to deter
Autor:
Heinrich Quenzel
Publikováno v:
Applied optics. 9(8)
Autor:
Heinrich Quenzel
Publikováno v:
Applied optics. 8(1)
The scattering properties of single aerosol particles with different indices of refraction have been computed from the Mie theory considering the spectral response of light-scattering aerosol counters commercially available. It is demonstrated that h
Autor:
Guenter Wildgruber, Dieter Rabus, Friedrich Fergg, Matthias Wiegner, Peter Völger, Werner Volker, Claudia Kahler, Jörg Ackermann, Heinrich Quenzel
Publikováno v:
SPIE Proceedings.
A mobile multi-channel backscatter lidar for aerosol remote sensing is established at the Meteorological Institute of the University of Munich. The scientific objectives, the instrument concept, and the present state of the data evaluation schemes ar
Autor:
Peter Köpke, Heinrich Quenzel
Publikováno v:
Advances in Space Research. 2:29-32
Numerical modelling is used to search for the most suitable conditions, with the object of determining the atmospheric turbidity (aerosol optical depth) from upward emerging spectral radiances in cloudfree pixels over water surfaces. The most suitabl
Publikováno v:
Solar Energy. 30:575-587
The circumsolar radiance and irradiance is discussed taking into account all relevant optical parameters. The decrease of the radiance from the limb of the sun to an angular distance of 10° from the sun's center is mainly determined by the optical d
Publikováno v:
Journal of Aerosol Science. 17:245-248
Publikováno v:
Atmospheric Environment (1967). 10:645-653
A simple method to compute the air light, based on single scattering only, is compared with an exact iterative method including multiple scattering and is found to give reasonable values of the air light expressed as a percentage of the reflected rad
Autor:
Heinrich Quenzel
Publikováno v:
Advances in Space Research. 2:19-28
Aerosols modify scattered solar radiation leaving the atmosphere and this fact will be exploited to determine the aerosol optical depth. The interaction processes between solar radiation and aerosol particles are outlined. A quasi-linear relationship
Autor:
Jost Heintzenberg, Heinrich Quenzel
Publikováno v:
Atmospheric Environment (1967). 7:503-507
In ducts leading to nephelometers, the impact of large aerosol particles on the walls changes the scattering properties of the turbid air under investigation. The quantitative relationship between the upper boundary radius of the particles and the sc