气候变化领域集成服务门户(CCPortal): Ozone-vegetation feedback through dry deposition and isoprene emissions in a global chemistry-carbon-climate model

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DOI	10.5194/acp-20-3841-2020
	Ozone-vegetation feedback through dry deposition and isoprene emissions in a global chemistry-carbon-climate model
	Gong C.; Lei Y.; Ma Y.; Yue X.; Liao H.
发表日期	2020
ISSN	16807316
起始页码	3841
结束页码	3857
卷号	20 期号:6
英文摘要	Ozone-vegetation feedback is essential to tropospheric ozone (O3) concentrations. The O3 stomatal uptake damages leaf photosynthesis and stomatal conductance and, in turn, influences O3 dry deposition. Further, O3 directly influences isoprene emissions, an important precursor of O3. The effects of O3 on vegetation further alter local meteorological fields and indirectly influence O3 concentrations. In this study, we apply a fully coupled chemistry-carbon-climate global model (ModelE2-YIBs) to evaluate changes in O3 concentrations caused by O3-vegetation interactions. Different parameterizations and sensitivities of the effect of O3 damage on photosynthesis, stomatal conductance, and isoprene emissions (IPE) are implemented in the model. The results show that O3-induced inhibition of stomatal conductance increases surface O3 on average by C2:1 ppbv (C1:2 ppbv) in eastern China, C1:8 ppbv (0:3 ppbv) in the eastern US, and C1:3 ppbv (C1:0 ppbv) in western Europe at high (low) damage sensitivity. Such positive feedback is dominated by reduced O3 dry deposition in addition to the increased temperature and decreased relative humidity from weakened transpiration. Including the effect of O3 damage on IPE slightly reduces surface O3 concentrations by influencing precursors. However, the reduced IPE weaken surface shortwave radiative forcing of secondary organic aerosols, leading to increased temperature and O3 concentrations in the eastern US. This study highlights the importance of interactions between O3 and vegetation with regard to O3 concentrations and the resultant air quality. © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License.
关键词	air quality atmospheric chemistry climate modeling concentration (composition)dry deposition emission control feedback mechanism isoprene ozone vegetation dynamics
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/132133
推荐引用方式 GB/T 7714	Gong C.,Lei Y.,Ma Y.,et al. Ozone-vegetation feedback through dry deposition and isoprene emissions in a global chemistry-carbon-climate model[J]. Atmospheric Chemistry and Physics,2020,20(6).
APA	Gong C.,Lei Y.,Ma Y.,Yue X.,&Liao H..(2020).Ozone-vegetation feedback through dry deposition and isoprene emissions in a global chemistry-carbon-climate model.,20(6).
MLA	Gong C.,et al."Ozone-vegetation feedback through dry deposition and isoprene emissions in a global chemistry-carbon-climate model".20.6(2020).