OMI Satellite and Ground‐Based Pandora Observations and Their Application to Surface NO2 Estimations at Terrestrial and Marine Sites
OMI Satellite and Ground‐Based Pandora Observations and Their Application to Surface NO2 Estimations at Terrestrial and Marine Sites
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OMI 卫星和地面潘多拉观测及其在陆地和海洋站点表面 NO2 估算中的应用
DOI：
10.1002/2017jd026518
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
L. Laakso
中科院分区：
文献类型：
--
作者：
D. Kollonige;A. Thompson;M. Josipovic;M. Tzortziou;J. Beukes;R. Burger;D. Martins;P. Zyl;V. Vakkari;L. Laakso
Pandora光谱仪使用直接太阳测量来获得气体的总柱量，为（1）验证卫星仪器和（2）监测臭氧（O3）和二氧化氮（NO2）的总柱（TC）提供了一种方法。我们首次使用潘多拉和臭氧监测仪器（OMI）观测来估计城市污染下风向的海洋和陆地站点的表面NO2，并与对比地区活动期间的现场测量结果进行比较：（1）南非高地（在韦尔格贡德，南纬26°34′10″，东经26°56′21″，海拔1，480米，约翰内斯堡比勒陀利亚大城市西南约120公里）和（2）2014年大气氮沉积到沿海生态系统（DANCE）巡航期间的美国大西洋中部海岸。在这两种情况下，没有本地的氮氧化物来源，但间歇性的区域污染的影响。对于TC NO2，OMI和Pandora差异约为20%，Pandora大多数时候更高。表面NO2值估计从OMI和潘多拉柱相比，在原位NO2的两个位置。对于Welgegund，行星边界层（PBL）高度，用于将柱转换为表面NO2值，通过三种方法进行估计：同位大气红外探测器（AIRS）观测;模型模拟;以及来自艾琳的无线电探空仪数据，该站点东北150公里。AIRS边界层高度在无线电探空仪得出的值的10%以内。Pandora和OMI估计的表面NO2与原位数据之间的绝对差异在陆地站点（分别为~0.5 ppbv和~1 ppbv或更大）比清洁海洋空气条件下更好，差异通常>3 ppbv。云量和边界层变化影响这些估计。
The Pandora spectrometer that uses direct‐Sun measurements to derive total column amounts of gases provides an approach for (1) validation of satellite instruments and (2) monitoring of total column (TC) ozone (O3) and nitrogen dioxide (NO2). We use for the first time Pandora and Ozone Monitoring Instrument (OMI) observations to estimate surface NO2 over marine and terrestrial sites downwind of urban pollution and compared with in situ measurements during campaigns in contrasting regions: (1) the South African Highveld (at Welgegund, 26°34′10″S, 26°56′21″E, 1,480 m asl, ~120 km southwest of the Johannesburg‐Pretoria megacity) and (2) shipboard U.S. mid‐Atlantic coast during the 2014 Deposition of Atmospheric Nitrogen to Coastal Ecosystems (DANCE) cruise. In both cases, there were no local NOx sources but intermittent regional pollution influences. For TC NO2, OMI and Pandora difference is ~20%, with Pandora higher most times. Surface NO2 values estimated from OMI and Pandora columns are compared to in situ NO2 for both locations. For Welgegund, the planetary boundary layer (PBL) height, used in converting column to surface NO2 value, has been estimated by three methods: co‐located Atmospheric Infrared Sounder (AIRS) observations; a model simulation; and radiosonde data from Irene, 150 km northeast of the site. AIRS PBL heights agree within 10% of radiosonde‐derived values. Absolute differences between Pandora‐ and OMI‐estimated surface NO2 and the in situ data are better at the terrestrial site (~0.5 ppbv and ~1 ppbv or greater, respectively) than under clean marine air conditions, with differences usually >3 ppbv. Cloud cover and PBL variability influence these estimations.
影响因子：
11.4
作者：
Brauer, Michael;Amann, Markus;Burnett, Rick T.;Cohen, Aaron;Dentener, Frank;Ezzati, Majid;Henderson, Sarah B.;Krzyzanowski, Michal;Martin, Randall V.;Van Dingenen, Rita;van Donkelaar, Aaron;Thurston, George D.
通讯作者：
Thurston, George D.
影响因子：
6.3
作者：
Hilboll, A.;Richter, A.;Burrows, J. P.
通讯作者：
Burrows, J. P.
Cabauw 二氧化氮测量仪器比对活动 (CINDI)：设计、执行和早期结果
影响因子：
3.8
作者：
Piters A
通讯作者：
Piters A