| 项目编号: | 1723337
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| 项目名称: | RAPID: Cold Air Pool Exchange Processes during the Utah Wintertime Fine Particulate Study |
| 作者: | Sebastian Hoch
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| 承担单位: | University of Utah
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| 批准年: | 2017
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| 开始日期: | 2017-01-15
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| 结束日期: | 2018-12-31
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| 资助金额: | 45000
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| 资助来源: | US-NSF
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| 项目类别: | Standard 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: | air quality
; cold air pool
; cold-air
; wintertime
; particulate pollutant
; utah
; persistent cold-air pool
; oxidant-rich air
; airmass exchange
; cold air
; salt lake city
; noaa aircraft campaign
; persistent cold pool
; air movement
; particulate air pollution formation
; noaa-led utah wintertime fine particulate study
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| 英文摘要: | Persistent cold-air pools are a phenomena where air is effectively trapped in a basin or valley during high pressure events in wintertime. They are especially prevalent in high altitude basins in the western United States. One of the impacts of cold air pools is that particulate pollutants accumulate and affect the air quality for places like Salt Lake City, Utah. This award provides funding for researchers to take surface-based meteorological measurements during an existing aircraft-based air quality field campaign to better detail the processes that affect air movement within the cold air pools and impact the relevant chemical processes. In Salt Lake City alone there are over 1 million people affected by these events, and the research results may extend to other locations with similar topography such as Los Angeles and the Front Range of Colorado.
The researchers will join the NOAA-led Utah Wintertime Fine Particulate Study which will take place in Jan-Feb 2017 in the Salt Lake City region. The NSF-funded researchers will augment the air quality focused study with meteorological measurements of the persistent cold pools that set up in the valleys and basins of Utah in the wintertime. In cold air pooling events vertical mixing is inhibited and particulate pollutants accumulate and affect human health. Multiple ceilometers, a lidar, sodar, temperature sensors, a surface flux station, and radiosonde launches will be deployed as ground-based assets to complement the NOAA aircraft campaign. The deployment will target key processes and questions regarding atmospheric mixing and airmass exchange that affect chemical composition and chemical pathways of particulate air pollution formation. The specific processes include: 1) vertical mixing within the persistent cold-air pool, 2) nighttime injections of clean, but oxidant-rich air along the basin sidewalls and through down-canyon flows, 3) daytime ventilation processes along the basin sidewalls, and 4) airmass exhanges with the lake boundary layer of the Great Salt Lake. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/90637
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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: | |
Sebastian Hoch. RAPID: Cold Air Pool Exchange Processes during the Utah Wintertime Fine Particulate Study. 2017-01-01.
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