DOI: 10.1016/j.atmosenv.2014.11.001
Scopus记录号: 2-s2.0-84922947204
论文题名: On the capabilities and limitations of GCCM simulations of summertime regional air quality: A diagnostic analysis of ozone and temperature simulations in the US using CESM CAM-Chem
作者: Brown-Steiner B ; , Hess P ; G ; , Lin M ; Y
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 101 起始页码: 134
结束页码: 148
语种: 英语
英文关键词: Atmospheric chemistry
; Climate change penalty
; Climate-chemistry model
; Extreme value theory
; Mixed model statistics
; Surface ozone
Scopus关键词: Air quality
; Atmospheric chemistry
; Atmospheric temperature
; Climate change
; Climate models
; Earth (planet)
; Isoprene
; Meteorology
; Ozone
; Photolysis
; Quality control
; Surface chemistry
; Chemistry modeling
; Extreme value theory
; Interannual variability
; Meteorological fields
; Mixed modeling
; Surface ozone
; Temperature simulations
; Tropospheric chemistry
; Chemical analysis
; acetaldehyde
; acetone
; alcohol
; ethane
; ethylene
; isoprene
; methanol
; ozone
; propane
; propylene
; air quality
; atmospheric chemistry
; atmospheric modeling
; atmospheric pollution
; climate change
; emission
; isoprene
; numerical model
; ozone
; temperature effect
; troposphere
; air quality
; Article
; biomass
; global climate
; meteorology
; priority journal
; sea surface temperature
; simulation
; solar radiation
; summer
; temperature
; United States
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: We conduct a diagnostic analysis of ozone chemistry simulated by four different configurations of a Global Climate-Chemistry Model (GCCM), the Community Earth System Model (CESM) with detailed tropospheric chemistry. The purpose of this study is to evaluate the ability of GCCMs to simulate future ozone chemistry by evaluating their ability to simulate present-day chemistry. To address this we chose four configurations of the CESM that differ in their meteorology (analyzed versus simulated meteorological fields), number of vertical levels, and the coupling of the ice and ocean models. We apply mixed model statistics to evaluate these different configurations against CASTNET ozone observations within different regions of the US by using various performance metrics relevant to evaluating future ozone changes. These include: mean biases and interannual variability, the ozone response to emission changes, the ozone response to temperature changes and ozone extreme values. Using these metrics, we find that although the configuration using analyzed meteorology best simulates temperatures it does not outperform a configuration with simulated meteorology in other metrics. All configurations are unable to capture observed ozone decreases and the ozone north-south gradient over the eastern US during 1995-2005. We find that the configuration with simulated meteorology with 56 vertical levels is markedly better in capturing observed ozone-temperature relationships and extreme values than a configuration that is identical except that it contains 26 vertical levels. We recommend caution in the use of GCCMs in simulating surface chemistry as differences in a variety of model parameters have a significant impact on the resulting chemical and climate variables. Isoprene emissions depend strongly on surface temperature and the resulting ozone chemistry is dependent on isoprene emissions but also on cloud cover, photolysis, the number of vertical levels, and the choice of meteorology. These dependencies must be accounted for in the interpretation of GCCM results. © 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82156
Appears in Collections: 气候变化事实与影响
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作者单位: Cornell University, Department of Biological and Environmental Engineering, United States; Princeton University, Princeton, NJ, United States; NOAA Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States
Recommended Citation:
Brown-Steiner B,, Hess P,G,et al. On the capabilities and limitations of GCCM simulations of summertime regional air quality: A diagnostic analysis of ozone and temperature simulations in the US using CESM CAM-Chem[J]. Atmospheric Environment,2015-01-01,101