| DOI: | 10.2172/1253893
|
| 报告号: | DOE/SC--ARM-16-029
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| 报告题名: | ACAPEX â Ship-Based Ice Nuclei Collections Field Campaign Report |
| 作者: | DeMott, Paul J; Hill, Thomas CJ
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| 出版年: | 2016
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| 发表日期: | 2016-04-01
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| 国家: | 美国
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| 语种: | 英语
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| 英文关键词: | atmospheric rivers
; ice-nucleating particles
; CalWater2
; NOAA
; marine boundary layer
; mixed-phase clouds
; aerosol indirect effects
; sea spray aerosols
|
| 中文主题词: | 海洋
; 气溶胶
; 风暴
; 云
; 降水
; 冰上通道
; 人口
; 水道
|
| 主题词: | OCEANS
; AEROSOLS
; STORMS
; CLOUDS
; PRECIPITATION
; LEADS
; POPULATION
|
| 英文摘要: | Measurements were sought to evaluate a hypotheses that sea-spray-sourced ice-nucleating particles (INPs) are of biological origin and represent a distinctly different INP population in comparison to long-range-transported desert or urban and regional land-sourced INP, and that the layering of marine within other aerosol layers feeding orographic storms over the mountains of California and the Western United States thereby leads to common and quantifiable scenarios that influence precipitation over the region. Aerosol collections on the National Oceanic and Atmospheric Administration (NOAA) research vessel (RV) Ronald H. Brown, for subsequent processing of INP immersion freezing activation temperature spectra and composition analyses, added a valuable measurement component to the ARM Cloud Aerosol Precipitation Experiment (ACAPEX) and related CalWater2 (NOAA) studies for use in parameterizing and modeling the impacts of marine boundary layer and other aerosols on climate and radiation via aerosol indirect effects on mixed-phase clouds. Twenty-five nominally 24-hour collections were made and have been processed for immersion freezing INP number concentrations versus temperature in the mixed-phase cloud temperature regime from -10 to -27°C. The similarity of INP number concentrations compared to typical marine boundary layer values attributed to sea-spray aerosols was noted. Nevertheless, variability of INP concentrations of up to 50 times was noted at individual temperatures over the course of the study. A particular analysis possible with this data set is to examine INP budgets over oceans inside versus outside of atmospheric river conditions. These INP measurements supplemented multiple airborne INP measurements on the ARM Aerial Facility (AAF), and others on the ground during ACAPEX and CalWater2, to provide extensive spatial and temporal analyses of INP immersion freezing spectra during winter storm periods. Future analyses will use thermal sensitivity to examine INP compositions as organic versus inorganic in these marine boundary layer samples. Data set integration is occurring under funding from an Atmospheric System Research (ASR) proposal. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1253893
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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/42179
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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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| 1253893.pdf（981KB） | 研究报告 | -- | 开放获取 | | View
Download
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| Recommended Citation: | |
DeMott, Paul J,Hill, Thomas CJ. ACAPEX â Ship-Based Ice Nuclei Collections Field Campaign Report. 2016-01-01.
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