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首页> 外文会议>NATO Advanced Research Workshop on Remote Sensing of the Atmosphere for Environmental Security; 20051116-19; Rabat(MA) >PERFORMANCES OF THE OPERATIONAL RETRIEVAL CODE FOR MIPAS ON ENVISAT AND POSSIBLE IMPROVEMENTS OF RETRIEVAL TECHNIQUES FOR ENVIRONMENT AND CLIMATE
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PERFORMANCES OF THE OPERATIONAL RETRIEVAL CODE FOR MIPAS ON ENVISAT AND POSSIBLE IMPROVEMENTS OF RETRIEVAL TECHNIQUES FOR ENVIRONMENT AND CLIMATE

机译：MIPAS的操作检索代码在环境和气候检索技术方面的表现和可能的改进

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摘要

The MIPAS instrument, operating on board of the Envisat satellite, with its broad band and high resolution measurements has posed a major challenge to operational retrieval techniques. The code developed for the operational analysis of MIPAS measurements has proved that near-realtime operation is possible and that a three-dimensional picture of the atmospheric composition can be retrieved from satellite observations. The features and performances of MIPAS retrieval code are briefly recalled. The breakthrough in retrieval techniques obtained with MIPAS can be the basis for further significant improvements. The correlation that exists among the observations and among the target parameters are more rigorously and more efficiently accounted for if the retrieval is made handling simultaneously correlated observations and correlated target parameters. This is the case of two-dimensional retrieval and multi-target retrieval. Another direction for further improvements is that of the effect of model errors. These can be better accounted either with the use of the variance covariance matrix of these errors or with the simultaneous retrieval of the main model errors. These retrieval approaches can be very demanding in terms of computing resources, but they change the ultimate accuracy possible with remote sensing techniques and must be taken into account in the planning of future instruments for environment and climate.
机译：在Envisat卫星上运行的MIPAS仪器具有宽带和高分辨率测量，这对操作检索技术​​提出了重大挑战。为MIPAS测量进行操作分析而开发的代码已证明，近实时操作是可能的，并且可以从卫星观测中获取大气成分的三维图。简要回顾了MIPAS检索代码的功能和性能。通过MIPAS获得的检索技术的突破可以作为进一步重大改进的基础。如果检索是同时处理相关的观测值和相关的目标参数，则可以更严格，更有效地解决观测值之间和目标参数之间存在的相关性。二维检索和多目标检索就是这种情况。进一步改进的另一个方向是模型误差的影响。可以通过使用这些误差的方差协方差矩阵或同时检索主模型误差来更好地解决这些问题。这些检索方法在计算资源方面可能非常苛刻，但是它们改变了遥感技术可能达到的最终精度，并且在规划未来的环境和气候仪器时必须考虑这些方法。

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