Collaborative Research: Coastal Cloud Chemistry during the Eastern Pacific Cloud Aerosol Precipitation Experiment (EPCAPE-CCC)

合作研究:东太平洋云气溶胶降水实验期间的沿海云化学(EPCAPE-CCC)

基本信息

  • 批准号:
    2133183
  • 负责人:
  • 金额:
    $ 29.88万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2022
  • 资助国家:
    美国
  • 起止时间:
    2022-09-01 至 2024-01-31
  • 项目状态:
    已结题

项目摘要

This project is focused on the study of cloud chemistry in support of improvements in how cloud formation is represented in climate models. A suite of advanced chemical measurements will be made at the Scripps Pier and at nearby Mt. Soledad to augment the Department of Energy’s Eastern Pacific Cloud Aerosol Precipitation Experiment (EPCAPE) campaign to be conducted in La Jolla California from February 2023 to January 2024. This effort will provide an unprecedented characterization of cloud chemical processing that is expected to help reduce a major uncertainty in climate model predictions.This project adds advanced chemical characterization of clouds to EPCAPE by leveraging recent instrument developments of single-particle mass spectrometry techniques, miniaturized static thermal gradient cloud condensation nuclei (CCN) instruments, and a custom-designed instrument for measuring aqueous hydroxyl (OH) radicals formed in nascent cloud droplets (the OH "burst"). The sampling strategy enables testing of the following hypotheses: (1) The subset of the aerosol population that is activated to cloud droplets is chemically distinct from the unactivated particles, and its size-resolved chemical composition is further differentiated by adding aqueous-oxidized components that can be identified in single-particle mass fragments. The chemical changes lower the activation supersaturation required for subsequent activation of particles, which in turn may affect cloud structure and drop distributions. (2) Gas-phase compounds that are removed by denuding will lower the supersaturation required for activation of each particle by enhancing water solubility during the uptake process. The effect is expected to depend on the amount of pollution influence, on the composition and concentration of gaseous species, and on particle size. (3) Particles with longer times between cloud cycles will produce a larger OH burst, and as a result, larger changes to particle chemical composition during cloud cycling. The OH burst activity, together with the availability of gas phase species will explain much of the variation in the chemical changes observed between cloud events.This effort includes the training of graduate and undergraduate students in instrument maintenance and measurement analyses to prepare the next generation of scientists for conducting atmospheric research.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
该项目的重点是云化学的研究,以支持改进气候模型中云的形成方式。一套先进的化学测量将在斯克里普斯码头和附近的Mt.Soledad将加强能源部将于2023年2月至2024年1月在加利福尼亚州拉霍亚进行的东太平洋云气溶胶降水实验(EPCAPE)活动。这项工作将提供前所未有的云化学过程的特征,预计将有助于减少气候模式预测中的主要不确定性。该项目利用单粒子质谱仪技术、小型化静态热梯度云凝结核(CCN)仪器和定制设计的测量新生云滴中形成的羟基(OH)自由基的仪器的最新发展,为EPCAPE增加了云的高级化学特征。采样策略能够检验以下假设:(1)被云滴激活的气溶胶种群的子集在化学上与未被激活的颗粒不同,其尺寸分辨的化学成分通过添加可在单颗粒质量碎片中识别的水氧化成分来进一步区分。化学变化降低了粒子随后激活所需的激活过饱和度,这反过来可能会影响云的结构和液滴分布。(2)通过剥离去除的气相化合物将通过提高吸收过程中的水溶解度来降低每个颗粒激活所需的过饱和度。预计效果将取决于污染影响的大小、气体物种的组成和浓度以及颗粒大小。(3)云周期间隔时间越长的粒子产生的OH爆发越大,云循环过程中粒子化学成分的变化也越大。OH爆发活动和气相物种的可获得性将解释云事件之间观察到的化学变化的大部分变化。这一努力包括对研究生和本科生进行仪器维护和测量分析方面的培训,为下一代科学家进行大气研究做准备。该奖项反映了NSF的法定使命,并通过使用基金会的智力优势和更广泛的影响审查标准进行评估,被认为值得支持。

项目成果

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Markus Petters其他文献

Markus Petters的其他文献

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{{ truncateString('Markus Petters', 18)}}的其他基金

Collaborative Research: Aerosol Properties and Autoconversion during Cold-Air outbreak Experiment in the Sub-Arctic Region (CAESAR)
合作研究:亚北极地区冷空气爆发实验期间的气溶胶特性和自动转化(CAESAR)
  • 批准号:
    2150769
  • 财政年份:
    2023
  • 资助金额:
    $ 29.88万
  • 项目类别:
    Continuing Grant
CIF: An Ice Nucleation Cold-Stage for Research and Teaching
CIF:用于研究和教学的冰核冷阶段
  • 批准号:
    2410422
  • 财政年份:
    2023
  • 资助金额:
    $ 29.88万
  • 项目类别:
    Continuing Grant
Laboratory Studies Investigating the Influence of Particle Diameter on Viscosity
研究粒径对粘度影响的实验室研究
  • 批准号:
    2410406
  • 财政年份:
    2023
  • 资助金额:
    $ 29.88万
  • 项目类别:
    Standard Grant
Collaborative Research: Aerosol Properties and Autoconversion during Cold-Air outbreak Experiment in the Sub-Arctic Region (CAESAR)
合作研究:亚北极地区冷空气爆发实验期间的气溶胶特性和自动转化(CAESAR)
  • 批准号:
    2412409
  • 财政年份:
    2023
  • 资助金额:
    $ 29.88万
  • 项目类别:
    Continuing Grant
Collaborative Research: Coastal Cloud Chemistry during the Eastern Pacific Cloud Aerosol Precipitation Experiment (EPCAPE-CCC)
合作研究:东太平洋云气溶胶降水实验期间的沿海云化学(EPCAPE-CCC)
  • 批准号:
    2410536
  • 财政年份:
    2023
  • 资助金额:
    $ 29.88万
  • 项目类别:
    Standard Grant
CIF: An Ice Nucleation Cold-Stage for Research and Teaching
CIF:用于研究和教学的冰核冷阶段
  • 批准号:
    2112978
  • 财政年份:
    2022
  • 资助金额:
    $ 29.88万
  • 项目类别:
    Continuing Grant
Laboratory Studies Investigating the Influence of Particle Diameter on Viscosity
研究粒径对粘度影响的实验室研究
  • 批准号:
    2037704
  • 财政年份:
    2021
  • 资助金额:
    $ 29.88万
  • 项目类别:
    Standard Grant
Collaborative Research: Ground-based Measurements to Constrain Aerosol-Cloud-Precipitation Interactions in West Coast United States Storms
合作研究:限制美国西海岸风暴中气溶胶-云-降水相互作用的地面测量
  • 批准号:
    1450690
  • 财政年份:
    2015
  • 资助金额:
    $ 29.88万
  • 项目类别:
    Standard Grant
Collaborative Research: RAPID - Integrated Precipitation and Hydrology 2014 (IPHEx) - Enhancing Coupled Observations of the Land-Atmosphere System and Educational Opportunities
合作研究:RAPID - 综合降水和水文学 2014 (IPHEx) - 加强陆地-大气系统的耦合观测和教育机会
  • 批准号:
    1442056
  • 财政年份:
    2014
  • 资助金额:
    $ 29.88万
  • 项目类别:
    Standard Grant
New Studies Linking Ice Nucleation and Precipitation
连接冰核和降水的新研究
  • 批准号:
    1010851
  • 财政年份:
    2011
  • 资助金额:
    $ 29.88万
  • 项目类别:
    Continuing Grant

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