Validation of the Aura Ozone Monitoring Instrument total column ozone product
Validation of the Aura Ozone Monitoring Instrument total column ozone product
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DOI：
10.1029/2007jd008802
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发表时间：
2008-05-02
影响因子：
4.4
通讯作者：
Levelt, P. F.
中科院分区：
文献类型：
--
作者：
McPeters, R.;Kroon, M.;Levelt, P. F.
本文概述了美国宇航局EOS- Aura卫星上臭氧监测仪器（OMI）的臭氧总柱数据产品的验证。OMI是一种成像紫外/可见光谱仪，每天绘制全球臭氧图。有两个臭氧产品从OMI，一个是使用传统的TOMS检索算法，另一个是使用差分光学吸收光谱算法，正在开发的利用OMI的超光谱能力的优势。验证主要是通过与多布森和布鲁尔地面站网络进行比较，其次是通过专门为验证Aura而进行的活动。与76个北方地面站的集合比较表明，OMI-TOMS总柱臭氧平均值比站平均值高0.4%，站与站之间的标准差为+/-0.6%。比较表明，OMI-TOMS臭氧在2年期间是稳定的，没有证据表明相对于地面网络的漂移。OMI-DOAS产品也是稳定的，但有1.1%的偏移和+/-2%的季节性变化。在使用NASA DC-8和WB-57飞机的四次飞机验证活动中，使用光化通量仪器测量了飞机上方的臭氧，并与OMI臭氧进行了比较。这些比较表明，在广泛的纬度和观察条件下，一致性在2%以内。只有在高纬度飞行期间，OMI-DOAS臭氧才显示出太阳天顶角相关误差的影响。
This paper is an overview of the validation of the total column ozone data products from the Ozone Monitoring Instrument (OMI) on board the NASA EOS- Aura satellite. OMI is an imaging UV/visible spectrometer that maps global ozone on a daily basis. There are two ozone products from OMI, one derived using the traditional TOMS retrieval algorithm and another derived using a Differential Optical Absorption Spectroscopy algorithm that is being developed to take advantage of the hyperspectral capabilities of OMI. Validation is primarily performed through comparison with a network of Dobson and Brewer ground stations and secondarily through campaigns conducted specifically to validate Aura. Comparison with an ensemble of 76 Northern Hemisphere ground stations shows that OMI-TOMS total column ozone averages 0.4% higher than the station average, with station-to-station standard deviation of +/- 0.6%. The comparison shows that the OMI-TOMS ozone was stable over the 2-year period with no evidence of drift relative to the ground network. The OMI-DOAS product is also stable but with a 1.1% offset and a seasonal variation of +/- 2%. During four aircraft validation campaigns using the NASA DC-8 and WB-57 aircraft, ozone above the aircraft was measured using an actinic flux instrument and compared with OMI ozone. These comparisons showed agreement within 2% over a broad range of latitude and viewing conditions. Only during the high-latitude flights did the OMI-DOAS ozone show the effects of a solar zenith angle dependent error.