气候变化领域集成服务门户(CCPortal): The Chemistry Mechanism in the Community Earth System Model Version 2 (CESM2)

CCPortal

DOI	10.1029/2019MS001882
	The Chemistry Mechanism in the Community Earth System Model Version 2 (CESM2)
	Emmons L.K.; Schwantes R.H.; Orlando J.J.; Tyndall G.; Kinnison D.; Lamarque J.-F.; Marsh D.; Mills M.J.; Tilmes S.; Bardeen C.; Buchholz R.R.; Conley A.; Gettelman A.; Garcia R.; Simpson I.; Blake D.R.; Meinardi S.; Pétron G.
发表日期	2020
ISSN	19422466
卷号	12 期号:4
英文摘要	The Community Earth System Model version 2 (CESM2) includes a detailed representation of chemistry throughout the atmosphere in the Community Atmosphere Model with chemistry and Whole Atmosphere Community Climate Model configurations. These model configurations use the Model for Ozone and Related chemical Tracers (MOZART) family of chemical mechanisms, covering the troposphere, stratosphere, mesosphere, and lower thermosphere. The new MOZART tropospheric chemistry scheme (T1) has a number of updates over the previous version (MOZART-4) in CESM, including improvements to the oxidation of isoprene and terpenes, organic nitrate speciation, and aromatic speciation and oxidation and thus improved representation of ozone and secondary organic aerosol precursors. An evaluation of the present-day simulations of CESM2 being provided for Climate Model Intercomparison Project round 6 (CMIP6) is presented. These simulations, using the anthropogenic and biomass burning emissions from the inventories specified for CMIP6, as well as online calculation of emissions of biogenic compounds, lightning NO, dust, and sea salt, indicate an underestimate of anthropogenic emissions of a variety of compounds, including carbon monoxide and hydrocarbons. The simulation of surface ozone in the southeast United States is improved over previous model versions, largely due to the improved representation of reactive nitrogen and organic nitrate compounds resulting in a lower ozone production rate than in CESM1 but still overestimates observations in summer. The simulation of tropospheric ozone agrees well with ozonesonde observations in many parts of the globe. The comparison of NOx and PAN to aircraft observations indicates the model simulates the nitrogen budget well. ©2020. The Authors.
英文关键词	atmospheric chemistry; chemical mechanism; tropospheric ozone
语种	英语
scopus关键词	Atmospheric chemistry; Budget control; Carbon monoxide; Ionosphere; Meteorological instruments; Nitrates; Ozone; Troposphere; Anthropogenic emissions; Biomass burning emissions; Community atmosphere model; Model inter comparisons; Organic nitrate compounds; Secondary organic aerosols; Southeast United States; Whole atmosphere community climate models; Climate models; anthropogenic effect; atmospheric chemistry; atmospheric modeling; biomass burning; climate conditions; climate modeling; CMIP; ozone; tracer; troposphere; United States
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/156736
作者单位	National Center for Atmospheric Research, Boulder, CO, United States; Now at Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; Now at Chemical Sciences Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO, United States; Department of Chemistry, University of California, Irvine, CA, United States; NOAA Earth System Research Laboratory, Boulder, CO, United States
推荐引用方式 GB/T 7714	Emmons L.K.,Schwantes R.H.,Orlando J.J.,et al. The Chemistry Mechanism in the Community Earth System Model Version 2 (CESM2)[J],2020,12(4).
APA	Emmons L.K..,Schwantes R.H..,Orlando J.J..,Tyndall G..,Kinnison D..,...&Pétron G..(2020).The Chemistry Mechanism in the Community Earth System Model Version 2 (CESM2).Journal of Advances in Modeling Earth Systems,12(4).
MLA	Emmons L.K.,et al."The Chemistry Mechanism in the Community Earth System Model Version 2 (CESM2)".Journal of Advances in Modeling Earth Systems 12.4(2020).