DOI: 10.1002/2016JD025583
论文题名: A photosynthesis-based two-leaf canopy stomatal conductance model for meteorology and air quality modeling with WRF/CMAQ PX LSM
作者: Ran L. ; Pleim J. ; Song C. ; Band L. ; Walker J.T. ; Binkowski F.S.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2017
卷: 122, 期: 3 起始页码: 1930
结束页码: 1952
语种: 英语
英文关键词: ET
; ozone dry deposition
; photosynthesis
; PX LSM
; stomatal conductance
; WRF/CMAQ
Scopus关键词: air quality
; canopy exchange
; carbon dioxide
; deposition velocity
; dry deposition
; evapotranspiration
; flux measurement
; grassland
; land surface
; leaf area index
; meteorology
; model test
; MODIS
; ozone
; parameterization
; photosynthesis
; stomatal conductance
; vegetation type
; weather forecasting
英文摘要: A coupled photosynthesis-stomatal conductance model with single-layer sunlit and shaded leaf canopy scaling is implemented and evaluated in a diagnostic box model with the Pleim-Xiu land surface model (PX LSM) and ozone deposition model components taken directly from the meteorology and air quality modeling system—WRF/CMAQ (Weather Research and Forecast model and Community Multiscale Air Quality model). The photosynthesis-based model for PX LSM (PX PSN) is evaluated at a FLUXNET site for implementation against different parameterizations and the current PX LSM approach with a simple Jarvis function (PX Jarvis). Latent heat flux (LH) from PX PSN is further evaluated at five FLUXNET sites with different vegetation types and landscape characteristics. Simulated ozone deposition and flux from PX PSN are evaluated at one of the sites with ozone flux measurements. Overall, the PX PSN simulates LH as well as the PX Jarvis approach. The PX PSN, however, shows distinct advantages over the PX Jarvis approach for grassland that likely result from its treatment of C3 and C4 plants for CO2 assimilation. Simulations using Moderate Resolution Imaging Spectroradiometer (MODIS) leaf area index (LAI) rather than LAI measured at each site assess how the model would perform with grid averaged data used in WRF/CMAQ. MODIS LAI estimates degrade model performance at all sites but one site having exceptionally old and tall trees. Ozone deposition velocity and ozone flux along with LH are simulated especially well by the PX PSN compared to significant overestimation by the PX Jarvis for a grassland site. ©2016. American Geophysical Union. All Rights Reserved. This article has been contributed to by US Government employees and their work is in the public domian in the USA. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62691
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: United States Environmental Protection Agency, Research Triangle Park, NC, United States; Department of Geography, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Institute for the Environment, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
Recommended Citation:
Ran L.,Pleim J.,Song C.,et al. A photosynthesis-based two-leaf canopy stomatal conductance model for meteorology and air quality modeling with WRF/CMAQ PX LSM[J]. Journal of Geophysical Research: Atmospheres,2017-01-01,122(3)