| タイトル | Altitude profile of aerosols on Mars from measurements of its thermal radiation on limb |
| 本文（外部サイト） | http://hdl.handle.net/2060/19940011950 |
| 著者（英） | Titov, D. V.; Moroz, V. I.; Gektin, Yu. M.; Naraeva, M. K.; Selivanov, A. S. |
| 著者所属（英） | Academy of Sciences (USSR) |
| 発行日 | 1993-01-01 |
| 言語 | eng |
| 内容記述 | Measurements of the thermal (range 7 - 13 micrometers) radiation of Mars with the high space resolution (approximately 2 km) were made by the TERMOSKAN experiment of the Phobos mission. Some of the results were published earlier but only the surface radiation was analyzed in detail. However some part of these measurements was made near the limb of the planet. The atmosphere gives an important input here in the planetary thermal radiation. Beyond the limb the atmosphere is the only source. The task of this work is to estimate some characteristics of the atmosphere using brightness profiles of the thermal radiation near the limb. An appropriate model of the temperature profile T(h) is necessary for such an analysis. A set of T(h) models (nominal, maximal and minimal) was defined using various sources including MARSGRAM, Viking-1 lander data, its theoretical considerations and boundary layer models. On the next step the possible input of the atmospheric gaseous emissions (wing of CO2 15 micrometer band) was estimated. It was found that even for the maximal T(h) this input is no more than a few percents of the measured radiation beyond the limb. Consequently the aerosols are responsible for almost all measured emission. The analysis of the observed profile showed that these aerosols have two components: (1) exponential with the scale height about 10 km and (2) some layered structure (two layers with maxima about 23 and 33 km consisted probably of ice). |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 94N16423 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/115769 |
