| DOI: | 10.2172/1242827
|
| 报告号: | DOE/SC-ARM--15-030
|
| 报告题名: | Marine Ice Nuclei Collections â MAGIC (MAGIC-IN) Final Campaign Summary |
| 作者: | DeMott, Paul J.; Hill, Thomas C. J.
|
| 出版年: | 2016
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| 发表日期: | 2016-02-01
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| 总页数: | 14
|
| 国家: | 美国
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| 语种: | 英语
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| 中文主题词: | 排放物
; 大气辐射
; 云
; 海色
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| 主题词: | EMISSIONS
; ATMOSPHERIC RADIATION
; CLOUDS
; OCEAN COLOR
|
| 英文摘要: | This campaign augmented measurements obtained via deployment of the Atmospheric Radiation Measurement (ARM) Climate Research Facilityâs ARM Mobile Facility (AMF) in the Marine ARM GPCI1 Investigation of Clouds (MAGIC) field campaign. The measurements, comprised of shipboard aerosol collections obtained during the five legs of the summer 2013 cruises, were sent for offline processing to measure ice nucleating particle (INP) number concentrations. The forty-three sample periods each represented, nominally, 24-hour segments during outbound and inbound transits of the Horizon Spirit. The samples were collected at locations between Los Angeles and Hawaii. Eight samples have been analyzed for immersion freezing temperature spectra thus far, using funding from other grants. Remaining samples are being frozen until support for further processing is obtained. Future analyses will investigate the inorganic/organic proportions of ice nuclei, in addition to determining the genetic composition of the overall biological community associated with INPs. Resulting correlations will be compared with other archived aerosol quantities, meteorological and ocean data (e.g., temperature, wind speed, sea surface temperature, etcâŚ) and satellite ocean color products. These findings will ultimately aid in parameterizing oceanic (e.g., sea spray) INP emissions in regional and global scale models, when illustrating aerosol connections to cloud phases and properties. Independent future analyses of frozen filter samples, as proposed by collaborating investigators at the time of this report, will include single particle analyses of marine boundary layer aerosol compositions and morphology. The MAGIC-IN data are considered representative of the oligotrophic, low Chlorophyll-a (with the exception of near-shore) ocean regions, which exist along the MAGIC transect. Current analyses suggest that INP numbers in the marine boundary layer over this region are typically low, compared to existing measurements over marine areas and those collected in the laboratory as the result of realistic sea spray particle generation. These findings, along with separate studies, confirm the existence of highly variable emission sources for INP from oceans, (though weaker than land-based emissions at modestly cooled temperatures). |
| URL: | http://www.osti.gov/scitech/servlets/purl/1242827
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/42288
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| File Name/ File Size |
Content Type |
Version |
Access |
License |
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| 1242827.pdf（1064KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
DeMott, Paul J.,Hill, Thomas C. J.. Marine Ice Nuclei Collections â MAGIC (MAGIC-IN) Final Campaign Summary. 2016-01-01.
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