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RISFeatures of the Scale Height for Particulate Extinction in Hazy Atmospheres
Publisher: American Meteorological Society
Abstract: Estimates of the particulate matter optical thickness at 0.55 ?m wavelength are obtained from measurements of attenuation of solar radiation through hazy atmospheres at three stations in the Po Valley. Simultaneous ...
Determination of the Total Precipitable Water by Varying the Intercept in Reitan's Relationship
Publisher: American Meteorological Society
Abstract: In the relationship proposed by Reitan (1963) between the total precipitable water and the dew-point temperature at ground level, the intercept is found to be a function of the scale height of the atmospheric water vapor ...
Study of the Relationship between Ångström's Wavelength Exponent and Junge Particle Size Distribution Exponent
Publisher: American Meteorological Society
Abstract: The volume extinction coefficient produced by aerosol particles at wavelength ? is generally proportional to ??α as found by Ånström. On the other hand, particle size spectra frequently give a particle number density ...
A Search for the e-Effect in the Atmospheric Water Vapor Continuum
Publisher: American Meteorological Society
Abstract: The e-type effect on the water vapor continuum, suggested by Bignell's laboratory experiments, is investigated in the atmospheric extinction spectrum of the sun between 8 and 13 µm. A classification of atmospheres in terms ...
Sun Spectra Through Optically Thin Clouds
Publisher: American Meteorological Society
Abstract: Results of measurements of the monochromatic optical thickness (in the 0.65?13.5 µm wavelength region) of some thin clouds are reported. The observed wavelength patterns are discussed in terms of the optical properties of ...
Dessens' Droplets in the Near and Middle Infrared Spectrum of the Sun
Publisher: American Meteorological Society
Abstract: Measurements of the monochromatic atmospheric extinction of solar radiation (in the 0.65?13.5 µm wavelength interval) in the Po Valley and neighboring mountainous areas show the occurrence during the morning (after the ...
The “SO2–NH3–Solution Droplets” System in an Urban Atmosphere
Publisher: American Meteorological Society
Abstract: The transformation of airborne SO2 into SO4? taking place in a polluted urban atmosphere has been investigated in terms of the equilibrium of the system composed of SO2, liquid water and NH3. The procedure used for selecting, ...
Evidence of Particulate Extinction in the Near Infrared Spectrum of the Sun
Publisher: American Meteorological Society
Abstract: The optical thickness a(?) of atmospheric particulate matter has been investigated in a near infrared wavelength interval. The instrument (a monochromator with a Newtonian telescope) was located at 1100 m MSL on the Appennine ...
A Refined Calibration Procedure of Two-Channel Sun Photometers to Measure Atmospheric Precipitable Water at Various Antarctic Sites
Publisher: American Meteorological Society
Abstract: Two-channel sun photometers can be easily employed at Antarctic sites, where harsh environmental conditions prevail, to carry out measurements of precipitable water W. In the very dry air conditions observed in the Antarctic ...