气候变化领域集成服务门户(CCPortal): Stratospheric impact on the Northern Hemisphere winter and spring ozone interannual variability in the troposphere

CCPortal

DOI	10.5194/acp-20-6417-2020
	Stratospheric impact on the Northern Hemisphere winter and spring ozone interannual variability in the troposphere
	Liu J.; Rodriguez J.M.; Oman L.D.; Douglass A.R.; Olsen M.A.; Hu L.
发表日期	2020
ISSN	16807316
起始页码	6417
结束页码	6433
卷号	20 期号:11
英文摘要	In this study we use ozone and stratospheric ozone tracer simulations from the high-resolution ( $0.5^{ĝˆ} \times 0.5^{ĝˆ}$ ) Goddard Earth Observing System, Version 5 (GEOS-5), in a replay mode to study the impact of stratospheric ozone on tropospheric ozone interannual variability (IAV). We use these simulations in conjunction with ozonesonde measurements from 1990 to 2016 during the winter and spring seasons. The simulations include a stratospheric ozone tracer (StratO3) to aid in the evaluation of the impact of stratospheric ozone IAV on the IAV of tropospheric ozone at different altitudes and locations. The model is in good agreement with the observed interannual variation in tropospheric ozone, except for the post-Pinatubo period (1992-1994) over the region of North America. Ozonesonde data show a negative ozone anomaly in 1992-1994 following the Pinatubo eruption, with recovery thereafter. The simulated anomaly is only half the magnitude of that observed. Our analysis suggests that the simulated stratosphere-troposphere exchange (STE) flux deduced from the analysis might be too strong over the North American (50-70ĝˆ N) region after the Mt. Pinatubo eruption in the early 1990s, masking the impact of lower stratospheric ozone concentration on tropospheric ozone. European ozonesonde measurements show a similar but weaker ozone depletion after the Mt. Pinatubo eruption, which is fully reproduced by the model. Analysis based on the stratospheric ozone tracer identifies differences in strength and vertical extent of stratospheric ozone impact on the tropospheric ozone interannual variation (IAV) between North America and Europe. Over North American stations, the StratO3 IAV has a significant impact on tropospheric ozone from the upper to lower troposphere and explains about 60 % and 66 % of the simulated ozone IAV at 400 hPa and ĝˆ1/411 % and 34 % at 700 hPa in winter and spring, respectively. Over European stations, the influence is limited to the middle to upper troposphere and becomes much smaller at 700 hPa. The Modern-Era Retrospective analysis for Research and Applications, Version 2 (MERRA-2), assimilated fields exhibit strong longitudinal variations over Northern Hemisphere (NH) mid-high latitudes, with lower tropopause height and lower geopotential height over North America than over Europe. These variations associated with the relevant variations in the location of tropospheric jet flows are responsible for the longitudinal differences in the stratospheric ozone impact, with stronger effects over North America than over Europe. © 2020 Copernicus GmbH. All rights reserved.
关键词	atmospheric chemistry computer simulation concentration (composition)EOS Northern Hemisphere ozone ozonesonde spring (season)stratosphere-troposphere interaction volcanic eruption winter Central Luzon Luzon Mount Pinatubo North America Philippines Zambales
语种	英语
来源机构	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/131998
推荐引用方式 GB/T 7714	Liu J.,Rodriguez J.M.,Oman L.D.,et al. Stratospheric impact on the Northern Hemisphere winter and spring ozone interannual variability in the troposphere[J]. Atmospheric Chemistry and Physics,2020,20(11).
APA	Liu J.,Rodriguez J.M.,Oman L.D.,Douglass A.R.,Olsen M.A.,&Hu L..(2020).Stratospheric impact on the Northern Hemisphere winter and spring ozone interannual variability in the troposphere.,20(11).
MLA	Liu J.,et al."Stratospheric impact on the Northern Hemisphere winter and spring ozone interannual variability in the troposphere".20.11(2020).