| 项目编号: | 1738629
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| 项目名称: | Identifying the Origins of Summertime Arctic Cloud Condensation Nuclei Using Online Fine Aerosol Composition Measurements |
| 作者: | Michael Lawler
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| 承担单位: | University of California-Irvine
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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: | 414275
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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: | origin
; arctic ocean
; specialized measurement
; cloud droplet
; cloud particle
; online photo blog
; cloud condition
; arctic aerosol
; field measurement
; cloud condensation nucleus
; summertime high arctic ocean
; fine particle aerosol
; total ambient sub-micron aerosol
; ambient size-resolved 10-200nm diameter aerosol
|
| 英文摘要: | Clouds play a critical role in the radiation budget and climate of the Arctic, but the origin of the particles on which these cloud droplets form is a relative unknown. This research project will provide an opportunity to take specialized measurements of microscopic particles onboard an ice breaker in the Arctic Ocean. By understanding the sources of cloud particles, scientists will be better able to determine whether cloud conditions will change in a world with less sea ice, and thus improve long-term forecasts of climate in this critical part of the world. Education and outreach activities will also be conducted during the project, including an online photo blog during the research cruise.
The research team will investigate the origin of fine particle aerosols and cloud condensation nuclei over the summertime high Arctic Ocean. Field measurements will be taken from the Swedish icebreaker Oden during August-September 2018. The Thermal Desorption Chemical Ionization Mass Spectrometer will be deployed to measure the composition of ambient size-resolved 10-200nm diameter aerosols, targeting the accumulation, Aitken and nucleation modes. Total ambient sub-micron aerosols will also be collected using a Particle into Liquid Sampler (PILS) and subsequently analyzed offline. The goal of the project is to measure the relative contributions to Arctic aerosol of biogenic polysaccharide material, sea salt, other organics, and other salts, on a size-resolved basis. A successful project would result in determining what processes are responsible for aerosols of different sizes, which would lead to the ability to infer the most important CCN sources in the region. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/89123
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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: | |
Michael Lawler. Identifying the Origins of Summertime Arctic Cloud Condensation Nuclei Using Online Fine Aerosol Composition Measurements. 2017-01-01.
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