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首页> 外文期刊>Journal of atmospheric and oceanic technology >Ozone Profile Retrieval from an Advanced Infrared Sounder: Experiments with Tropopause-Based Climatology and Optimal Estimation Approach
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Ozone Profile Retrieval from an Advanced Infrared Sounder: Experiments with Tropopause-Based Climatology and Optimal Estimation Approach

机译：从高级红外测深仪获取臭氧剖面：基于对流线虫的气候学和最佳估计方法的实验

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摘要

Motivated by a significant potential for retrieving atmospheric ozone profile information from advanced satellite infrared sounders, this study investigates various methods to optimize ozone retrievals. A set of retrieval experiments has been performed to assess the impact of different background states (or the a priori states) and retrieval algorithms on the retrieved ozone profiles in the upper troposphere and lower stratosphere (UTLS) using Atmospheric Infrared Sounder (AIRS) measurements. A new tropopause-based ozone climatology, using publicly available global ozonesonde data to construct the a priori state, is described. Comparisons are made with the AIRS version 5 (v5) ozone climatology. The authors also present the result of a newly implemented optimal estimation (OE) algorithm and compare it to the current AIRS science team (AST) algorithm used in version 5. The ozone climatology using tropopause-referenced coordinates better preserves the shape and the magnitude of the ozone gradient across the tropopause, especially in the extratropical region. The results of the retrieval experiments indicate that the tropopause-referenced climatology not only helps to optimize the use of instrument sensitivity in the UTLS region, but it also provides better constraints to the OE algorithm.
机译：出于从先进的卫星红外测深仪中获取大气臭氧剖面信息的巨大潜力的推动，本研究研究了各种优化臭氧提取的方法。已进行了一组检索实验，以评估使用大气红外测深仪（AIRS）测量的对流层上部和平流层下部（UTLS）中不同背景状态（或先验状态）和检索算法对检索到的臭氧剖面的影响。描述了一种新的基于对流层顶的臭氧气候学，该气候学使用公开可用的全球臭氧探空仪数据来构建先验状态。与AIRS版本5（v5）臭氧气候进行了比较。作者还介绍了新实施的最优估计（OE）算法的结果，并将其与版本5中使用的当前AIRS科学小组（AST）算法进行了比较。使用对流层顶参考坐标的臭氧气候可以更好地保留形状和大小。穿过对流层顶的臭氧梯度，特别是在温带地区。检索实验的结果表明，以对流层顶为参考的气候学不仅有助于优化UTLS区域中仪器灵敏度的使用，而且为OE算法提供了更好的约束。

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