| 项目编号: | 1738588
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| 项目名称: | Snowpack Chlorine Chemistry in Wintertime Urban Boundary Layer |
| 作者: | Kerri Pratt
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| 承担单位: | University of Michigan Ann Arbor
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| 批准年: | 2017
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| 开始日期: | 2017-09-01
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| 结束日期: | 2020-08-31
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| 资助金额: | 495867
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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: | urban snowpack
; urban air quality
; snowpack clno2 production impact urban winter daytime atmospheric oxidant condition
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| 英文摘要: | This project focuses on investigating the effects of road (de-icing) salt application on urban air quality. The transfer of chlorine from road salts (NaCl) to the gas phase can alter the fate of atmospheric pollutants. Both field work and modeling will be conducted to investigate the production of nitryl chloride (ClNO2) from an urban snowpack.
The three main hypotheses are: (1) ClNO2 is produced from road salt-laden snow by heterogeneous reaction of N2O5 with snow chloride; (2) N2O5 deposition to the urban snowpack, coincident with ClNO2 production, can be observed and quantified through near-surface vertical profile measurements; and (3) Snowpack ClNO2 production impacts urban winter daytime atmospheric oxidant conditions.
This project supports the training of both graduate and undergraduate students. Outreach activities will be conducted through the UM Museum of Natural History Science Communication Fellows Program, part of the NSF Portal to the Public Network. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/89223
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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: | |
Kerri Pratt. Snowpack Chlorine Chemistry in Wintertime Urban Boundary Layer. 2017-01-01.
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