| 项目编号: | 1419818
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| 项目名称: | Variability of Midlatitude Transport and Mixing In a Warmer World |
| 作者: | Elizabeth Barnes
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| 承担单位: | Colorado State University
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| 批准年: | 2013
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| 开始日期: | 2014-08-01
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| 结束日期: | 2018-07-31
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| 资助金额: | USD349939
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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: | pollutant transport
; tropospheric transport
; synoptic variability
; transport
; midlatitude circulation
; atmospheric variability
; large-scale atmospheric transport
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| 英文摘要: | Air quality over the western United States is determined not only by local emissions, but also by the transport of pollutants from outside the region, namely, from Asian emissions that have been transported across the Pacific Ocean, and by stratospheric intrusion events that bring naturally-occurring ozone-rich air to the surface. Quantifying the contribution of the large-scale atmospheric transport to present-day air quality is of vital importance for policy makers, since the ability of an area to be in compliance with current air quality standards is partly a function of the background meteorological conditions. Furthermore, increasing greenhouse gas concentrations over the next century are expected to drive large changes in the midlatitude circulation, but the effects of these changes on pollutant transport are not well understood.
The goals of this project are (1) to gain a fundamental understanding of the dynamical mechanisms that couple synoptic variability and pollutant transport and (2) to explore how changes in synoptic variability with increased greenhouse gas concentrations may modify this transport. The two goals will be addressed using a hierarchy of models: a large-multi-model data set, a chemistry-climate model, a stratosphere-resolving atmospheric GCM and an idealized, dry dynamical core. Future pollutant emissions are largely unpredictable, but the dynamical processes that drive tropospheric transport have the potential to be understood. By decoupling emissions from the circulation, this work aims to assess the role of changing atmospheric variability in modifying tropospheric transport. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/96309
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Elizabeth Barnes. Variability of Midlatitude Transport and Mixing In a Warmer World. 2013-01-01.
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