| 项目编号: | 1644375
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| 项目名称: | Collaborative Research: Ultra Fine Particle Deposition onto Vegetated Surfaces Situated on Complex Topography: From Leaf to Landscape |
| 作者: | Marcelo Chamecki
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| 承担单位: | University of California-Los Angeles
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| 批准年: | 2017
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| 开始日期: | 2017-03-15
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| 结束日期: | 2020-02-29
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| 资助金额: | 253609
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| 资助来源: | US-NSF
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| 项目类别: | Continuing grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Atmospheric and Geospace Sciences
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| 英文关键词: | ufp
; leaf morphology
; vegetated surface
; ufp deposition velocity
; landscape scale
; ultrafine particle
; large scale topography
; complex topography
; ultra-fine particle
; nano-particle product
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| 英文摘要: | Vegetated surfaces produce and can serve as a sink for ultrafine particles (UFP) that can affect local climate and air-quality. This work examines the interaction of the forest canopy with the UFP under realistic conditions to develop methods to predict the efficacy of forests as UFP sinks. The findings inform how vegetation effects ecosystem services, climate and air quality. It also provide and opportunity to scrub pollution from rapidly growing nano-particle products in urban areas.
Forests produce particles that play an important but ill-understood role in the radiative balance and composition of the atmosphere. The proposal focuses on the quantification of Ultra-fine particles (UFP) fluxes from vegetation canopies that are controlled by complex dynamical and reactive processes using first principles. Their up scaling method resolves (1) the effects of leaf morphology (2) flows within the a canopy and on landscape scales and (3) effects of large scale topography. The project will use laboratory and field experiments over a range of scales to understand fundamental questions such as (1) How does foliage size, shape and structure impact UFP collection? (2) How does the UFP deposition velocity vary within the canopy? (3) Can we reliably upscale these UFP fluxes for complex topography? This project should enable the development of next generation canopy models to treat couplings and chemical feedbacks between ecosystems and the atmosphere. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/90430
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| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
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| Recommended Citation: | |
Marcelo Chamecki. Collaborative Research: Ultra Fine Particle Deposition onto Vegetated Surfaces Situated on Complex Topography: From Leaf to Landscape. 2017-01-01.
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