气候变化领域集成服务门户(CCPortal): Late-spring and summertime tropospheric ozone and no2 in western siberia and the russian arctic: Regional model evaluation and sensitivities

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DOI	10.5194/acp-21-4677-2021
	Late-spring and summertime tropospheric ozone and no2 in western siberia and the russian arctic: Regional model evaluation and sensitivities
	Thorp T.; R. Arnold S.; J. Pope R.; V. Spracklen D.; Conibear L.; Knote C.; Arshinov M.; Belan B.; Asmi E.; Laurila T.; I. Skorokhod A.; Nieminen T.; Petäjä T.
发表日期	2021
ISSN	1680-7316
起始页码	4677
结束页码	4697
卷号	21 期号:6
英文摘要	We use a regional chemistry transport model (Weather Research and Forecasting model coupled with chemistry, WRF-Chem) in conjunction with surface obser vations of tropospheric ozone and Ozone Monitoring Instru ment (OMI) satellite retrievals of tropospheric column NO2 to evaluate processes controlling the regional distribution of tropospheric ozone over western Siberia for late spring and summer in 2011. This region hosts a range of anthro pogenic and natural ozone precursor sources, and it serves as a gateway for near-surface transport of Eurasian pollution to the Arctic. However, there is a severe lack of in situ ob servations to constrain tropospheric ozone sources and sinks in the region. We show widespread negative bias in WRF Chem tropospheric column NO2 when compared to OMI satellite observations from May-August, which is reduced when using ECLIPSE (Evaluating the Climate and Air Qual ity Impacts of Short-Lived Pollutants) v5a emissions (frac tional mean bias (FMB)=-0.82 to-0.73) compared with the EDGAR (Emissions Database for Global Atmospheric Research)-HTAP (Hemispheric Transport of Air Pollution) v2.2 emissions data (FMB =-0.80 to -0.70). Despite the large negative bias, the spatial correlations between model and observed NO2 columns suggest that the spatial pattern of NOx sources in the region is well represented. Scaling trans port and energy emissions in the ECLIPSE v5a inventory by a factor of 2 reduces column NO2 bias (FMB=-0.66 to-0.35), but with overestimates in some urban regions and little change to a persistent underestimate in background re gions. Based on the scaled ECLIPSE v5a emissions, we as sess the influence of the two dominant anthropogenic emis sion sectors (transport and energy) and vegetation fires on surface NOx and ozone over Siberia and the Russian Arctic. Our results suggest regional ozone is more sensitive to an thropogenic emissions, particularly from the transport sector, and the contribution from fire emissions maximises in June and is largely confined to latitudes south of 60° N. Ozone dry deposition fluxes from the model simulations show that the dominant ozone dry deposition sink in the region is to for est vegetation, averaging 8.0 Tg of ozone per month, peak ing at 10.3 Tg of ozone deposition during June. The impact of fires on ozone dry deposition within the domain is small compared to anthropogenic emissions and is negligible north of 60° N. Overall, our results suggest that surface ozone in the region is controlled by an interplay between seasonality in atmospheric transport patterns, vegetation dry deposition, and a dominance of transport and energy sector emissions. © Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License.
语种	英语
scopus关键词	atmospheric chemistry; atmospheric modeling; nitrogen dioxide; ozone; spring (season); summer; troposphere; Arctic; Russian Federation; Siberia
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/247030
作者单位	Institute for Climate and Atmospheric Science, School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, United Kingdom; National Centre for Earth Observation, University of Leeds, Leeds, LS2 9JT, United Kingdom; Meteorological Institute, Ludwig-Maximilians-Universität München, Theresienstr. 37, Munich, 80333, Germany; V.E. Zuev Institute of Atmospheric Optics, Russian Academy of Sciences, Siberian Branch, Tomsk, Russian Federation; Finnish Meteorological Institute, Climate Research Programme, Helsinki, 00101, Finland; A.M. Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences, Moscow, Russian Federation; Institute for Atmospheric and Earth System Research, University of Helsinki, Helsinki, Finland
推荐引用方式 GB/T 7714	Thorp T.,R. Arnold S.,J. Pope R.,et al. Late-spring and summertime tropospheric ozone and no2 in western siberia and the russian arctic: Regional model evaluation and sensitivities[J],2021,21(6).
APA	Thorp T..,R. Arnold S..,J. Pope R..,V. Spracklen D..,Conibear L..,...&Petäjä T..(2021).Late-spring and summertime tropospheric ozone and no2 in western siberia and the russian arctic: Regional model evaluation and sensitivities.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(6).
MLA	Thorp T.,et al."Late-spring and summertime tropospheric ozone and no2 in western siberia and the russian arctic: Regional model evaluation and sensitivities".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.6(2021).