Ground-based validation of EOS-Aura OMI NO2 vertical column data in the midlatitude mountain ranges of Tien Shan (Kyrgyzstan) and Alps (France)
Ground-based validation of EOS-Aura OMI NO2 vertical column data in the midlatitude mountain ranges of Tien Shan (Kyrgyzstan) and Alps (France)
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DOI：
10.1029/2007jd008659
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发表时间：
2008-04-29
影响因子：
4.4
通讯作者：
Kroon, M.
中科院分区：
文献类型：
--
作者：
Ionov, D. V.;Timofeyev, Y. M.;Kroon, M.
分别自1983年和1992年以来，吉尔吉斯斯坦的伊塞克湖站和法国的上普罗旺斯天文台一直在使用地面紫外-可见仪器测量二氧化氮垂直柱。这些测量结果已用于验证ERS-2全球臭氧监测实验和环境卫星大气制图扫描成像吸收光谱仪NO2柱数据。在GOME和SCIAMACHY成功飞行任务的基础上，美国航天局于2004年7月在EOS Aura卫星上发射了臭氧监测实验。在这里，我们提出了OMI NO2业务数据（标准产品）和相关的地基黄昏测量中纬度地区，在伊塞克湖和OHP，在2004-2006年之间的比较结果。平流层NO2柱，观测OMI和我们的地面仪器，已被纠正NO2日变化和当地中午值使用光化学箱模式归一化。根据我们的比较，OMI平流层NO2柱分别低估了伊塞克湖和OHP的地面测量值（0.3 +/- 0.3）x 10（15）分子/cm（2）和（0.7 +/- 0.6）x 10（15）分子/cm（2）。对流层污染对NO2测量的影响，在这两个地区的观测已被确定和讨论。
Ground-based UV-visible instruments for NO2 vertical column measurements have been operating at Issyk-Kul station, in Kyrgyzstan, and Observatoire de Haute-Provence (OHP), in France, since 1983 and 1992, respectively. These measurements have already been used for validation of ERS-2 Global Ozone Monitoring Experiment (GOME) and Envisat Scanning Imaging Absorption Spectrometer for Atmospheric Cartography (SCIAMACHY) NO2 column data. Building upon the successful missions of GOME and SCIAMACHY, the Ozone Monitoring Experiment (OMI) was launched by NASA onboard the EOS Aura satellite in July 2004. Here we present the results of recent comparisons between OMI NO2 operational data (standard product) and correlative ground-based twilight measurements in midlatitudes, at Issyk-Kul and OHP, in 2004-2006. The stratospheric NO2 columns, observed by OMI and our ground-based instruments, have been corrected for NO2 diurnal change and normalized to local noon values using a photochemical box model. According to our comparison, OMI stratospheric NO2 columns underestimate ground-based measurements by (0.3 +/- 0.3) x 10(15) molecules/cm(2) and (0.7 +/- 0.6) x 10(15) molecules/cm(2) at Issyk-Kul and OHP, respectively. The effect of tropospheric pollution on the NO2 measurements in both regions of observations has been identified and discussed.