DOI: 10.1002/2014GL059651
论文题名: Coupling dry deposition to vegetation phenology in the Community Earth System Model: Implications for the simulation of surface O3
作者: Valmartin M. ; Heald C.L. ; Arnold S.R.
刊名: Geophysical Research Letters
ISSN: 0094-10116
EISSN: 1944-9847
出版年: 2014
卷: 41, 期: 8 起始页码: 2988
结束页码: 2996
语种: 英语
英文关键词: deposition
; modeling
; ozone
Scopus关键词: Biology
; Deposition
; Models
; Optimization
; Ozone
; Rain
; Vegetation
; Community land models
; Deposition process
; Dry deposition velocities
; Earth system model
; Stomatal resistance
; Vegetation change
; Vegetation phenology
; Vegetation resistance
; Computer simulation
; atmosphere-biosphere interaction
; atmospheric dynamics
; atmospheric modeling
; boundary layer
; broad-leaved forest
; dry deposition
; leaf area index
; ozone
; parameterization
; phenology
; seasonality
; three-dimensional modeling
; vegetation cover
; vegetation dynamics
; Europe
; United States
英文摘要: Dry deposition is an important removal process controlling surface ozone. We examine the representation of this ozone loss mechanism in the Community Earth System Model. We first correct the dry deposition parameterization by coupling the leaf and stomatal vegetation resistances to the leaf area index, an omission which has adversely impacted over a decade of ozone simulations using both the Model for Ozone and Related chemical Tracers (MOZART) and Community Atmospheric Model-Chem (CAM-Chem) global models. We show that this correction increases O3 dry deposition velocities over vegetated regions and improves the simulated seasonality in this loss process. This enhanced removal reduces the previously reported bias in summertime surface O3 simulated over eastern U.S. and Europe. We further optimize the parameterization by scaling down the stomatal resistance used in the Community Land Model to observed values. This in turn further improves the simulation of dry deposition velocity of O3, particularly over broadleaf forested regions. The summertime surface O3 bias is reduced from 30ppb to 14ppb over eastern U.S. and 13ppb to 5ppb over Europe from the standard to the optimized scheme, respectively. O3 deposition processes must therefore be accurately coupled to vegetation phenology within 3-D atmospheric models, as a first step toward improving surface O3 and simulating O3 responses to future and past vegetation changes. Key Points The dry deposition scheme (Wesely, 1989) is corrected and optimized in CESM Dry deposition velocity and surface O3 simulations are significantly improved Linking deposition to LAI is key to simulate O3 responses to vegetation changes ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899043671&doi=10.1002%2f2014GL059651&partnerID=40&md5=0f8be0412e4079bac198878b36549c79
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7380
Appears in Collections: 气候减缓与适应
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作者单位: Atmospheric Science Department, Colorado State University, Fort Collins, CO, United States
Recommended Citation:
Valmartin M.,Heald C.L.,Arnold S.R.. Coupling dry deposition to vegetation phenology in the Community Earth System Model: Implications for the simulation of surface O3[J]. Geophysical Research Letters,2014-01-01,41(8).