No widespread dust in the middle atmosphere of Mars from Mars Climate Sounder observations

作者：Kleinboehl Armin; Schofield John T; Kass David M; Abdou Wedad A; McCleese Daniel J

来源：Icarus, 2015, 261: 118-121.

DOI：10.1016/j.icarus.2015.08.010

• Mars
• Mars, atmosphere
• Mars, climate
• Infrared observations
• Abundances, atmospheres

It has been established that dust in the atmosphere of Mars is not distributed homogeneously in the vertical but exhibits layering in the lower atmosphere. Recently published results also suggest a dust maximum in the middle atmosphere that predominantly occurs at 50-60 km altitude on the daytime hemisphere. We use measurements from the Mars Climate Sounder to investigate the distribution of dust above similar to 40 km altitude. Our results do not support the existence of widespread dust in the middle atmosphere of Mars inferred from earlier observations. The average dust extinction does not exceed 10(-6) km(-1) at 463 cm(-1) above 50 km altitude in atmospheric conditions without large dust storms.

• 出版日期2015-11-15