| Автор | Fahd, Antoine K. |
| Автор | Steffes, Paul G. |
| Дата выпуска | 1991 |
| dc.description | Recent observations of the millimeter wave (2.6 mm) emission from Venus have shown significant variations in its continuum flux emission (de Pater et al., 1991). Some of this change in emission may be attributed to variability in the abundance of Venus cloud constituents, specifically H<sub>2</sub>SO<sub>4</sub> condensates. In order to evaluate this hypothesis, a knowledge of the dielectric properties of liquid sulfuric acid at millimeter wave frequencies (30 < f < 300 GHz) is needed. The dielectric constants can then be used to determine the expected absorptivity from such a condensate and hence the effect of H<sub>2</sub>SO<sub>4</sub> droplets on the millimeter wave emission from Venus. Therefore we have performed laboratory measurements of the complex dielectric constant of liquid sulfuric acid between 30–40 and 90–100 GHz. The methodology and the results are reported in this paper along with a calculation of the absorption properties of H<sub>2</sub>SO<sub>4</sub> droplets under Venus‐like conditions. In addition, this paper discusses the effects of these condensates on the variation in the flux emission of Venus and compares the effect of H<sub>2</sub>SO<sub>4</sub> droplets with other absorbers in the atmosphere of Venus such as gaseous SO<sub>2</sub>. We conclude that this condensate does affect the brightness temperature of Venus and its effect cannot be omitted in future modeling of the atmosphere of Venus. |
| Формат | application.pdf |
| Копирайт | Copyright 1991 by the American Geophysical Union. |
| Тема | Second International Conference on Laboratory Research for Planetary Atmospheres |
| Тема | ELECTROMAGNETICS |
| Тема | Wave propagation |
| Тема | Second International Conference on Laboratory Research for Planetary Atmospheres |
| Тема | ELECTROMAGNETICS |
| Тема | IONOSPHERE |
| Тема | Wave propagation |
| Тема | MATHEMATICAL GEOPHYSICS |
| Тема | Wave propagation |
| Тема | NONLINEAR GEOPHYSICS |
| Тема | Nonlinear waves, shock waves, solitons |
| Тема | OCEANOGRAPHY: GENERAL |
| Тема | Remote sensing and electromagnetic processes |
| Тема | PLANETARY SCIENCES: SOLID SURFACE PLANETS |
| Тема | Planetology: Solid Surface Planets and Satellites: Atmospheric composition and chemistry |
| Тема | Planetology: Solid Surface Planets and Satellites: Instruments and techniques |
| Тема | Planetary Sciences: Solid Surface Planets |
| Тема | RADIO SCIENCE |
| Тема | Radio Science |
| Тема | Ionospheric propagation |
| Название | Laboratory measurement of the millimeter wave properties of liquid sulfuric acid (H<sub>2</sub>SO<sub>4</sub>) |
| Тип | article |
| DOI | 10.1029/91JE01684 |
| Electronic ISSN | 2156-2202 |
| Print ISSN | 0148-0227 |
| Журнал | Journal of Geophysical Research: Planets |
| Том | 96 |
| Первая страница | 17471 |
| Последняя страница | 17476 |
| Выпуск | E2 |
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