气候变化领域集成服务门户(CCPortal): Impact of synthetic space-borne NO2 observations from the Sentinel-4 and Sentinel-5P missions on tropospheric NO2 analyses

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DOI	10.5194/acp-19-12811-2019
	Impact of synthetic space-borne NO2 observations from the Sentinel-4 and Sentinel-5P missions on tropospheric NO2 analyses
	Timmermans R.; Segers A.; Curier L.; Abida R.; Attié J.-L.; El Amraoui L.; Eskes H.; De Haan J.; Kujanpää J.; Lahoz W.; Oude Nijhuis A.; Quesada-Ruiz S.; Ricaud P.; Veefkind P.; Schaap M.
发表日期	2019
ISSN	16807316
起始页码	12811
结束页码	12833
卷号	19 期号:19
英文摘要	We present an Observing System Simulation Experiment (OSSE) dedicated to the evaluation of the added value of the Sentinel-4 and Sentinel-5P missions for tropospheric nitrogen dioxide (NO2). Sentinel-4 is a geostationary (GEO) mission covering the European continent, providing observations with high temporal resolution (hourly). Sentinel-5P is a low Earth orbit (LEO) mission providing daily observations with a global coverage. The OSSE experiment has been carefully designed, with separate models for the simulation of observations and for the assimilation experiments and with conservative estimates of the total observation uncertainties. In the experiment we simulate Sentinel-4 and Sentinel-5P tropospheric NO2 columns and surface ozone concentrations at 7 by 7km resolution over Europe for two 3-month summer and winter periods. The synthetic observations are based on a nature run (NR) from a chemistry transport model (MOCAGE) and error estimates using instrument characteristics. We assimilate the simulated observations into a chemistry transport model (LOTOS-EUROS) independent of the NR to evaluate their impact on modelled NO2 tropospheric columns and surface concentrations. The results are compared to an operational system where only ground-based ozone observations are ingested. Both instruments have an added value to analysed NO2 columns and surface values, reflected in decreased biases and improved correlations. The Sentinel-4 NO2 observations with hourly temporal resolution benefit modelled NO2 analyses throughout the entire day where the daily Sentinel-5P NO2 observations have a slightly lower impact that lasts up to 3-6 h after overpass. The evaluated benefits may be even higher in reality as the applied error estimates were shown to be higher than actual errors in the now operational Sentinel-5P NO2 products. We show that an accurate representation of the NO2 profile is crucial for the benefit of the column observations on surface values. The results support the need for having a combination of GEO and LEO missions for NO2 analyses in view of the complementary benefits of hourly temporal resolution (GEO, Sentinel-4) and global coverage (LEO, Sentinel-5P). © 2019 Author(s).
语种	英语
scopus关键词	geostationary satellite; nitrogen dioxide; satellite data; satellite imagery; satellite mission; Sentinel; troposphere
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144092
作者单位	TNO, Netherlands Organisation for Applied Research, Climate, Air and Sustainability Division, TA Utrecht, 3508, Netherlands; CNRM-GAME, Météo-France, CNRS UMR 3589, Toulouse, France; Université de Toulouse, Laboratoire d'Aérologie, CNRS UMR 5560, Toulouse, France; Royal Netherlands Meteorological Institute (KNMI), P.O. Box 201, AE De Bilt, 3730, Netherlands; Finnish Meteorological Institute (FMI), P.O. Box 503, Helsinki, 00101, Finland; NILU - Norwegian Institute for Air Research, P.O. Box 100, Kjeller, 2027, Norway; FUB - Free University Berlin, Institut für Meteorologie, Carl-Heinrich-Becker-Weg 6-10, Berlin, 12165, Germany; CBS, Central Bureau of Statistics, EX Heerlen, 6412, Netherlands; SkyEcho, AK Rotterdam, 3013, Netherlands
推荐引用方式 GB/T 7714	Timmermans R.,Segers A.,Curier L.,et al. Impact of synthetic space-borne NO2 observations from the Sentinel-4 and Sentinel-5P missions on tropospheric NO2 analyses[J],2019,19(19).
APA	Timmermans R..,Segers A..,Curier L..,Abida R..,Attié J.-L..,...&Schaap M..(2019).Impact of synthetic space-borne NO2 observations from the Sentinel-4 and Sentinel-5P missions on tropospheric NO2 analyses.Atmospheric Chemistry and Physics,19(19).
MLA	Timmermans R.,et al."Impact of synthetic space-borne NO2 observations from the Sentinel-4 and Sentinel-5P missions on tropospheric NO2 analyses".Atmospheric Chemistry and Physics 19.19(2019).