Probing Atmospheric Properties of Mars and Venus by High-Resolution Infrared Heterodyne Spectroscopy of CO2

利用 CO2 高分辨率红外外差光谱探测火星和金星的大气特性

• 批准号: 33669283
• 负责人: Dr. Guido Sonnabend
• 金额: --
• 依托单位: Planetary Systems Laboratory
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/33669283?language=en
• 关键词: Probing; Atmospheric; Properties; Mars; Venus

Understanding of the physical and chemical processes in planetary atmospheres is essential for the development of general circulation models (GCM) and meteorological forecast models. This is not only true for Earth but for the other terrestrial planets, Mars and Venus, as well. Especially in the case of Mars, atmospheric models have been improved substantially over the last few years due to constraints imposed by the data that became available from several space missions e.g. MarsExpress or Mars Global Surveyor (MGS) and the Mars Rovers. Nevertheless these data are only selective and mainly from the surface and from limited altitude regions of Mars. Observations in other (higher) atmospheric regions are rare but are necessary to constrain the models and to prepare for future space missions and landers to the Red Planet. One forecast parameter is zonal wind velocity. Similar to jet streams on Earth global zonal flows are predicted for Mars with wind velocities up to 200 m/s near 80 km altitude. An elegant method to measure high atmospheric winds is by observing infrared CO2 absorption and emission lines with high spectral resolution heterodyne spectroscopy. From line frequency (Doppler-)shifts velocities of the emitting and absorbing gas can be directly deduced. In contrast to microwave observations an adequate spatial resolution can be achieved in addition to the high spectral resolution with the infrared heterodyne observing technique. Similar observations are planned on Venus in the support of the ESA VenusExpress space mission.

了解行星大气中的物理和化学过程对于发展大气环流模式和气象预报模式是必不可少的。这不仅适用于地球，也适用于其他类地行星，火星和金星。特别是在火星的情况下，大气模型在过去几年中得到了很大的改进，这是由于从几次空间飞行任务，如火星快车或火星全球勘测者（MGS）和火星漫游者获得的数据所造成的限制。然而，这些数据只是选择性的，主要来自火星表面和有限的海拔地区。在其他（较高）大气区域的观测是罕见的，但有必要限制模型，并为未来的太空任务和火星着陆器做准备。一个预报参数是纬向风速。与地球上的急流类似，预计火星上的全球纬向气流在80公里高度附近的风速可达200米/秒。测量高空大气风的一个优雅的方法是用高光谱分辨率外差光谱法观察红外CO2吸收和发射线。从线频率（多普勒）偏移可以直接推导出发射和吸收气体的速度。与微波观测相反，红外外差观测技术除了具有高光谱分辨率外，还可以获得足够的空间分辨率。为支持欧空局VenusExpress空间使命，计划对金星进行类似的观测。

项目成果

Temperatures in Venus upper atmosphere from mid-infrared heterodyne spectroscopy of CO2 around 10μm wavelength

来自 10μm 波长附近 CO2 中红外外差光谱的金星高层大气温度

• DOI: 10.1016/j.pss.2008.05.008
• 发表时间: 2008
• 期刊: Planetary and Space Science
• 影响因子: 2.4
• 作者: G. Sonnabend;M. Sornig;T. Kostiuk;J. Delgado;R. Schieder
• 通讯作者: R. Schieder

Direct observations of Venus upper mesospheric temperatures from ground based spectroscopy of CO2

从地面 CO2 光谱直接观测金星上层中间层温度

• DOI: 10.1029/2010gl043335
• 发表时间: 2010
• 期刊: Geophysical Research Letters
• 影响因子: 5.2
• 作者: G. Sonnabend;M. Sornig;P. Krötz;D. Stupar
• 通讯作者: D. Stupar

Venus upper atmosphere winds from ground-based heterodyne spectroscopy of CO2 at 10μm wavelength

金星高层大气风来自 10μm 波长的 CO2 地面外差光谱

• DOI: 10.1016/j.pss.2008.05.006
• 发表时间: 2008
• 期刊: Planetary and Space Science
• 影响因子: 2.4
• 作者: M. Sornig;T. Livengood;G. Sonnabend;P. Krötz;D. Stupar;T. Kostiuk;R. Schieder
• 通讯作者: R. Schieder

Ultra high spectral resolution observations of planetary atmospheres using the Cologne tuneable heterodyne infrared spectrometer

使用科隆可调谐外差红外光谱仪对行星大气进行超高光谱分辨率观测

• DOI: 10.1016/j.jqsrt.2007.12.003
• 发表时间: 2008
• 期刊: Journal of Quantitative Spectroscopy & Radiative Transfer
• 影响因子: 2.3
• 作者: G. Sonnabend;M. Sornig;P. Krötz;D. Stupar;R. Schieder
• 通讯作者: R. Schieder