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NASA HIRDLS and ESA MIPAS data product comparison (And other ground data)

机译：NASA HIRDLS和ESA MIPAS数据产品比较（和其他地面数据）

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摘要

The HIRDLS instrument is a limb viewing infra-red radiometer on the NASA Aura spacecraft in a sun synchronous low earth orbit and obtains measurements of the composition of the atmosphere covering the whole Earth each day. The MIPAS instrument is a limb viewing infra-red interferometer on board the European Envisat satellite in a very similar orbit to Aura except that the local solar time is different. The complement of geophysical data products of both instruments is very similar, and because of similar observation strategies their two data sets can be usefully compared. The comparison provides the means to support validation in order to obtain statistics such as systematic differences and variance. This is performed over the full latitude range of HIRDLS and height range of MIPAS and thereby helps to identify sources of errors. The identification of known atmospheric features is a useful diagnostic, and includes such things as regions of upwelling of tracer gases, or the propagation of coherent structures as with mid-latitude waves and we can test whether these structures are consistently represented in both data sets. HIRDLS version 2.04.19 (v004) temperature, ozone and nitric acid show very low systematic 'errors' compared to MIPAS over most of the spatial range. Currently pre-released water vapour, nitrous oxide and F-11 are reasonably similar, CH4 somewhat more restricted, and nitrogen dioxide, N2O5, chlorine nitrate and F-l2 as yet susceptible to complications from the obstructed telescope. Further details are discussed in the paper.
机译：HIRDLS仪器是NASA Aura航天器上处于太阳同步低地球轨道上的四肢观察型红外辐射仪，每天获取覆盖整个地球的大气成分的测量值。 MIPAS仪器是欧洲Envisat卫星上的肢体观察型红外干涉仪，其轨道与Aura非常相似，但当地的太阳时间不同。两种仪器的地球物理数据产品的补充非常相似，并且由于相似的观测策略，可以有效地比较它们的两个数据集。比较提供了支持验证以获取统计信息（例如系统差异和方差）的方法。这是在HIRDLS的整个纬度范围和MIPAS的高度范围内执行的，因此有助于识别错误源。对已知大气特征的识别是一种有用的诊断方法，包括诸如示踪气体上升流区域或相干结构的传播（如中纬度波）之类的东西，我们可以测试这些结构是否在两个数据集中都得到一致表示。与MIPAS相比，HIRDLS版本2.04.19（v004）的温度，臭氧和硝酸在大多数空间范围内显示出非常低的系统“误差”。目前预释放的水蒸气，一氧化二氮和F-11相当合理，CH4的限制更为严格，而二氧化氮，N2O5，硝酸氯和F-12仍然容易受望远镜阻塞的影响。本文讨论了更多细节。

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