| 项目编号: | 1423989
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| 项目名称: | RAPID: Measurements of Hydroxyl Radicals, Sulfuric Acid, sCIs, Hydroperoxy Radicals and Organic Peroxy Radicals on the C-130 during FRAPPE |
| 作者: | Roy Mauldin
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| 承担单位: | University of Colorado at Boulder
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| 批准年: | 2013
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| 开始日期: | 2014-03-15
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| 结束日期: | 2016-02-29
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| 资助金额: | USD197695
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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: | radicals
; colorado northern front range metropolitan area
; sulfuric acid
; measurement
; sci
; frappe
; hydroxyl radical
; campaign
; four-channel chemical ionization mass spectrometer
; effort
; frappe campaign
; ozone
; atmospheric research
; hydroperoxy radical
; organic peroxy radical
; surface condition
; field campaign
; forecasting air quality
; chemical process
; chemical species
; national center
; nsf/ncar c-130 aircraft platform
; nasa discover-aq
; photochemistry experiment
; many university scientist
; criegee radical intermediate
; vital contribution
|
| 英文摘要: | This effort involves the deployment of a four-channel chemical ionization mass spectrometer (CIMS) system on the NSF/NCAR C-130 aircraft platform during the Front Range Air Pollution and Photochemistry Experiment (FRAPPE) field campaign scheduled to take place from July 16-August 16, 2014 in the Colorado Northern Front Range Metropolitan Area. FRAPPE is a campaign being lead by researchers from the National Center for Atmospheric Research (NCAR), with the participation of many university scientists. The FRAPPE campaign will run concurrently with the NASA DISCOVER-AQ (Deriving Information on Surface conditions from Column and Vertically Resolved Observations Relevant to Air Quality) project.
Chemical species to be measured through this effort include OH (hydroxyl radicals), HO2 (hydroperoxy radicals) and HO2+RO2 (hydroperoxy plus organic peroxy radicals), H2SO4 (sulfuric acid), and sCIs (the sum of stabilized Criegee radical Intermediates from the reactions of alkenes with ozone - O3). These measurements will improve characterization of the spatial and temporal variability of the oxidizing capacity of the sampled air masses during the campaign. They will also help to constrain the role of sulfuric acid in aerosol formation and growth, and quantify the importance of sCIs as an oxidant in the urban environment.
The hydroxyl radical (OH) is the main oxidant in the lower atmosphere and the most significant one causing the formation of ozone. The measurements made in this study will make a vital contribution to modeling and forecasting air quality and in determining the sources of ozone in the Colorado Northern Front Range Metropolitan area. This effort is expected to lead to improved model representations of chemical processes occurring in the urban environment. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/97248
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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: | |
Roy Mauldin. RAPID: Measurements of Hydroxyl Radicals, Sulfuric Acid, sCIs, Hydroperoxy Radicals and Organic Peroxy Radicals on the C-130 during FRAPPE. 2013-01-01.
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