Observations of the microwave emission of Venus from 1.3 to 3.6 cm

摘要: Abstract Laboratory measurements of Steffes (1986) have suggested that the intensity and shape microwave spectrum Venus might be especially sensitive to subcloud abundance constituents such as SO 2 gaseous H 4 . It was likewise some variations emission occur between 1.5 3 cm (10 20 GHz), a wavelength range which had previously only been sparsely observed. As result, coordinated observations were conducted at four wavelengths 1.35 (22.2 GHz) 3.6 (8.42 using 43-m NRAO antenna Green Bank, West Virginia, 64-m NASA's Deep Space Communication Complex, Goldstone, California. In this paper, we report methodology results these observations, compare with other calculated spectra. We conclude observed is consistent an average in equatorial midlatitude regions approximately 5 ppm. additional atmospheric opacity made Pioneer-Venus Orbiter Radio Occultation experiment search for temporal spatial atmosphere. An upper limit also determined.