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首页> 外文会议>Remote Sensing of Clouds and the Atmosphere XII; Proceedings of SPIE-The International Society for Optical Engineering; vol.6745 >Stratospheric and upper tropospheric aerosol retrieval from limb scatter signals
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Stratospheric and upper tropospheric aerosol retrieval from limb scatter signals

机译：从肢体散射信号提取平流层和对流层上层气溶胶

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摘要

Solar occultation observations made by the SAGE family of space instruments have provided a record of global stratospheric and upper tropospheric aerosols that extends over 25 years. Since the demise of SAGE II and SAGE III however, there are presently no space instruments devoted to continuing this aerosol data set. The paper aims to demonstrate that aerosol extinction profiles, together with a moment of the size distribution, can be accurately retrieved from Limb Scatter measurements. The methodology is described, and retrieval examples are presented using data from a Limb Scatter instrument, namely SAGE III. The retrieved extinction profiles are compared with SAGE II and SAGE III occultation aerosol products for a series of wavelengths. It is shown that the relative retrieval accuracy is good (less than 5%), with a relative precision on the order of 25%. Once operational, it is planned to apply the retrieval method to the data collected by the two still-operating Limb Scatter instruments (namely OSIRIS and SCIAMACHY) in order to extend the aerosol data record into the present time. In the future, the OMPS Limb Profiler instrument, which is presently manifested on NPP with a launch date of September 2009, will be used for additional stratospheric aerosol research.
机译：SAGE系列空间仪器进行的太阳掩星观测提供了长达25年的全球平流层和对流层高层气溶胶记录。但是自从SAGE II和SAGE III灭亡以来，目前没有专门的空间仪器来继续这一气溶胶数据集。本文旨在证明，可以从肢体散布测量结果中准确地获取气溶胶的消光曲线以及尺寸分布的矩。描述了该方法，并使用Limb Scatter仪器SAGE III的数据提供了检索示例。将获得的消光曲线与SAGE II和SAGE III掩盖气溶胶产品进行一系列波长比较。结果表明，相对检索精度良好（小于5％），相对精度约为25％。一旦投入使用，计划将检索方法应用于由两个仍在运行的肢体散布仪器（即OSIRIS和SCIAMACHY）收集的数据，以将气溶胶数据记录扩展到当前时间。将来，OMPS Limb Profiler仪器将在平流层气溶胶研究中使用，该仪器目前已在NPP上展示，发射日期为2009年9月。

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