DOI: 10.1002/jgrd.502622013
论文题名: Development and evaluation of an ammonia bidirectional flux parameterization for air quality models
作者: Pleim J.E. ; Bash E.O. ; Walker J.T. ; Cooter E.J.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 9 起始页码: 3794
结束页码: 3806
语种: 英语
Scopus关键词: Air quality
; Algorithms
; Crops
; Deposition
; Management
; Quality assurance
; Surface measurement
; Uncertainty analysis
; Air quality modeling
; Air quality models
; Bidirectional flux
; Boundary layer resistance
; Diffusion resistance
; Modeling technique
; Particulate Matter
; Surface exchanges
; Ammonia
; agricultural land
; ammonia
; aquatic ecosystem
; atmospheric modeling
; cover crop
; diffusion
; flux measurement
; implementation process
; magnitude
; nitrification
; numerical model
; parameterization
; particulate matter
; soybean
; terrestrial ecosystem
; Glycine max
; Zea mays
英文摘要: Ammonia is an important contributor to particulate matter in the atmosphere and can significantly impact terrestrial and aquatic ecosystems. Surface exchange between the atmosphere and biosphere is a key part of the ammonia cycle. New modeling techniques are being developed for use in air quality models that replace current ammonia emissions from fertilized crops and ammonia dry deposition with a bidirectional surface flux model including linkage to a detailed biogeochemical and farm management model. Recent field studies involving surface flux measurements over crops that predominate in North America have been crucial for extending earlier bidirectional flux models toward more realistic treatment of NH3 fluxes for croplands. Comparisons of the ammonia bidirection flux algorithm to both lightly fertilized soybeans and heavily fertilized corn demonstrate that the model can capture the magnitude and dynamics of observed ammonia fluxes, both net deposition and evasion, over a range of conditions with overall biases on the order of the uncertainty of the measurements. However, successful application to the field experiment in heavily fertilized corn required substantial modification of the model to include new parameterizations for in-soil diffusion resistance, ground quasi-laminar boundary layer resistance, and revised cuticular resistance that is dependent on in-canopy NH3 concentration and RH at the leaf surface. This new bidirectional flux algorithm has been incorporated in an air quality modeling system, which also includes an implementation of a soil nitrification model. © 2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63493
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: U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, United States
Recommended Citation:
Pleim J.E.,Bash E.O.,Walker J.T.,et al. Development and evaluation of an ammonia bidirectional flux parameterization for air quality models[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(9)