气候变化领域集成服务门户(CCPortal): Prescribing Zonally Asymmetric Ozone Climatologies in Climate Models: Performance Compared to a Chemistry-Climate Model

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DOI	10.1029/2018MS001478
	Prescribing Zonally Asymmetric Ozone Climatologies in Climate Models: Performance Compared to a Chemistry-Climate Model
	Rae C.D.; Keeble J.; Hitchcock P.; Pyle J.A.
发表日期	2019
ISSN	19422466
起始页码	918
结束页码	933
卷号	11 期号:4
英文摘要	Three different methods of specifying ozone in an atmosphere-only version of the HadGEM3-A global circulation model are compared to the coupled chemistry configuration of this model. These methods include a specified zonal-mean ozone climatology, a specified 3-D ozone climatology, and a calculated-asymmetry scheme in which a specified zonal-mean ozone field is adapted online to be consistent with dynamically produced zonal asymmetries. These simulations all use identical boundary conditions and, by construction, have the same climatological zonal-mean ozone, that of the coupled chemistry configuration of the model. Prescribing ozone, regardless of scheme, results in a simulation which is 3–4 times faster than the coupled chemistry-climate model (CCM). Prescribing climatological zonal asymmetries leads to a vortex which is the correct intensity but which is systematically displaced over regions with lower prescribed ozone. When zonal asymmetries in ozone are free to evolve interactively with model dynamics, the modeled wintertime stratospheric vortex shape and mean sea level pressure patterns closely resemble that produced by the full CCM in both hemispheres, in terms of statistically significant differences. Further, we separate out the two distinct pathways by which zonal ozone asymmetries influence modeled dynamics. We present this interactive-ozone zonal-asymmetry scheme as an inexpensive tool for accurately modeling the impacts of dynamically consistent ozone fields as seen in a CCM which ultimately influence mean sea level pressure and tropospheric circulation (particularly during wintertime in the Northern Hemisphere, when ozone asymmetries are generally largest), without the computational burden of simulating interactive chemistry. ©2019. The Authors.
英文关键词	circulation; feedback; interactive chemistry; ozone; stratosphere-troposphere coupling; zonal asymmetries
语种	英语
scopus关键词	Atmospheric chemistry; Boiler circulation; Climatology; Computational chemistry; Feedback; Ozone; Sea level; Troposphere; Vortex flow; Chemistry-climate models; Coupled chemistry-climate model; Global circulation model; Mean sea level pressures; Statistically significant difference; Stratosphere-troposphere coupling; Tropospheric circulation; Zonal asymmetry; Climate models; asymmetry; atmospheric chemistry; boundary condition; climate feedback; climate modeling; climatology; Northern Hemisphere; oceanic circulation; ozone; sea level pressure; Southern Hemisphere; stratosphere-troposphere interaction
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156932
作者单位	Centre for Atmospheric Science, Department of Chemistry, University of Cambridge, Cambridge, United Kingdom; NCAS, University of Cambridge, Cambridge, United Kingdom; Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, United Kingdom; Now at Earth and Atmospheric Sciences Department, Cornell University, Ithaca, NY, United States
推荐引用方式 GB/T 7714	Rae C.D.,Keeble J.,Hitchcock P.,et al. Prescribing Zonally Asymmetric Ozone Climatologies in Climate Models: Performance Compared to a Chemistry-Climate Model[J],2019,11(4).
APA	Rae C.D.,Keeble J.,Hitchcock P.,&Pyle J.A..(2019).Prescribing Zonally Asymmetric Ozone Climatologies in Climate Models: Performance Compared to a Chemistry-Climate Model.Journal of Advances in Modeling Earth Systems,11(4).
MLA	Rae C.D.,et al."Prescribing Zonally Asymmetric Ozone Climatologies in Climate Models: Performance Compared to a Chemistry-Climate Model".Journal of Advances in Modeling Earth Systems 11.4(2019).