Korean Meteorological Society;Seoul: Korean Meteorological Society
摘要:
摘要： In this work we examine the effect of ozone (O 3 ) from the stratosphere on the O 3 levels in the troposphere. The tropopause is defined according to the potential vorticity (PV) and potential temperature distribution. Annual simulations were performed with and without stratospheric O 3 in the model to access the impact of stratospheric O 3 on tropospheric O 3 distribution. Our results show that surface O 3 over the tropical marine boundary layer is dominated by in-situ photochemistry in the troposphere. The maintenance of the inter-hemispheric asymmetry in ozone over the extra-tropical marine boundary layer is dominated by the transport of O 3 from the stratosphere. Comparisons between the model and the surface measurements show that the model without stratospheric O 3 exhibits a hemispheric summer maximum, emphasizing the contributions of transport of O 3 and O 3 producing precursors from continental regions during the summer months, whilst no clear spring O 3 maximum is found. About 50%–80% of O 3 in the lower troposphere over the northern hemisphere mid-latitudes are photochemically produced during the northern hemisphere summer. About 20%–40% is due to tropospheric photochemistry in the lower troposphere during the northern hemisphere spring. We conclude that O 3 transported from the stratosphere is the dominating factor for the spring O 3 maximum over the extra-tropical latitudes, while the photochemical ozone production is the dominating factor for O 3 over the tropical marine boundary layer environments and over the land surface emission areas. 其他題名： Asia-Pacific J Atmos Sci 出版者： Seoul: Korean Meteorological Society 出版日期： 2015-05-01 出處： 한국기상학회지, 2015, 51(2), , pp.137-155 版權： Korean Meteorological Society and Springer Science+Business Media Dordrecht 2015 識別號： ISSN: 1976-7633 識別號： EISSN: 1976-7951 識別號： DOI: 10.1007/s13143-015-0064-7
