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)

基本信息

  • 批准号:
    2150812
  • 负责人:
  • 金额:
    $ 8.85万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2023
  • 资助国家:
    美国
  • 起止时间:
    2023-05-01 至 2026-04-30
  • 项目状态:
    未结题

项目摘要

Arctic climate is changing at a faster pace than anywhere on Earth. Climate projections indicate that the Arctic will continue to warm, but uncertainties arise due to questions about the future behavior of Arctic clouds. An area of primary uncertainty is the properties of clouds that form during cold-air outbreaks, where very cold airmasses over the Arctic ice move southward over the relatively warm open ocean. This award will help to provide observational data of these clouds (and precipitation) and the exchange of energy between the ocean and atmosphere during the Cold-Air outbreak Experiment in the Sub-Arctic Region (CAESAR), which will be conducted in Spring 2024 out of northern Scandinavia. The observations collected during CAESAR will be used in an effort to better understand the characteristics of the cold-air outbreak system, and the Arctic climate system more broadly, in order to inform climate models and projections. The project will also help to improve forecasting of weather hazards with significant relevance to naval operations, commercial shipping, and coastal communities. The broader field effort includes significant opportunities for students and early-career scientists, international collaboration, and public outreach. One specific goal of this award is the development of interactive worksheets/notebooks for courses, based on the CAESAR project. This award will contribute to the CAESAR goal of examining the impact of varying aerosol conditions in the upstream Arctic boundary layer on ice initiation, cloud liquid water, and snow growth mechanisms in a range of wind and temperature regimes. In particular, the measurements provided through this project will target two critical knowledge gaps: 1) understanding the budget of marine boundary layer (MBL) cloud condensation nuclei (CCN) sources, and 2) providing observational constraints on CCN-limited aerosol indirect effect. The project will support the deployment of two CCN counters, a scanning mobility particle sizer (SMPS), an ultra-high sensitivity aerosol spectrometer (UHSAS), and a single particle soot photometer (SP2). The research team will contribute two value-added products to support the overall CAESAR objectives: quality-controlled cloud condensation nuclei activation spectra to support aerosol-cloud-precipitation modeling investigators and derived cloud droplet number probability distribution functions to support observational and modeling colleagues.Primary funding for this project comes from the Physical and Dynamic Meteorology program with partial funding from the Arctic Natural Sciences program. The deployment of observational assets for CAESAR is being funded by the Facilities for Atmospheric Research and Education program.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.
北极气候变化的速度比地球上任何地方都快。气候预测表明,北极将继续变暖,但由于对北极云未来行为的质疑,出现了不确定性。一个主要的不确定性领域是在冷空气爆发期间形成的云层的特性,在冷空气爆发期间,北极冰层上的非常冷的气团在相对温暖的开阔海洋上向南移动。该奖项将有助于提供这些云(和降水)的观测数据,以及将于2024年春季在斯堪的纳维亚半岛北部进行的次北极地区冷空气爆发实验期间海洋和大气之间的能量交换。凯撒期间收集的观测结果将用于更好地了解冷空气爆发系统和更广泛的北极气候系统的特征,以便为气候模型和预测提供信息。该项目还将有助于改进对天气灾害的预报,对海军行动、商业航运和沿海社区具有重要意义。更广泛的领域努力包括为学生和职业早期科学家提供重要机会、国际合作和公共宣传。该奖项的一个具体目标是在凯撒项目的基础上开发课程的互动工作表/笔记本。这一奖项将有助于凯撒的目标,即研究上游北极边界层中不同的气溶胶条件对一系列风和温度条件下的冰起始、云液态水和雪生长机制的影响。特别是,通过该项目提供的测量将针对两个关键的知识差距:1)了解海洋边界层云凝结核(CCN)源的预算,以及2)提供对CCN限制的气溶胶间接影响的观测约束。该项目将支持部署两个CCN计数器、一个扫描流动颗粒测定仪(SMPS)、一个超高灵敏度气溶胶光谱仪(UHSAS)和一个单颗粒烟尘光度计(SP2)。研究团队将贡献两种增值产品来支持整个凯撒目标:质量控制的云凝结核激活光谱,以支持气溶胶-云-降水模拟研究人员;以及推导云滴数量概率分布函数,以支持观测和模拟同事。该项目的主要资金来自物理和动态气象学计划,部分资金来自北极自然科学计划。为凯撒部署观测资源由大气研究和教育设施项目提供资金。这一奖励反映了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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Jefferson Snider其他文献

Jefferson Snider的其他文献

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{{ truncateString('Jefferson Snider', 18)}}的其他基金

Hotplate Precipitation and Wind Measurement Improvement
热板降水和风测量的改进
  • 批准号:
    1850809
  • 财政年份:
    2019
  • 资助金额:
    $ 8.85万
  • 项目类别:
    Continuing Grant
EAGER: Collaborative Research: Chilean Coastal Orographic Precipitation Experiment pilot project (CCOPE-2015)
EAGER:合作研究:智利沿海地形降水实验试点项目 (CCOPE-2015)
  • 批准号:
    1522277
  • 财政年份:
    2015
  • 资助金额:
    $ 8.85万
  • 项目类别:
    Standard Grant
Droplet Activation in Cloud Updrafts
云上升气流中的液滴激活
  • 批准号:
    0103951
  • 财政年份:
    2001
  • 资助金额:
    $ 8.85万
  • 项目类别:
    Continuing Grant
Analysis of the Condensational Growth in Marine Stratocumulus During the Second Aerosol Characterization Study
第二次气溶胶表征研究期间海洋层积云凝结生长的分析
  • 批准号:
    9816119
  • 财政年份:
    1999
  • 资助金额:
    $ 8.85万
  • 项目类别:
    Continuing Grant
Ice Crystal Scavenging of C1 - C4 Alcohols and Ethylene Glycol
C1 - C4 醇和乙二醇的冰晶清除
  • 批准号:
    9314358
  • 财政年份:
    1994
  • 资助金额:
    $ 8.85万
  • 项目类别:
    Continuing Grant
Reactive, Volatile, and Highly Soluble Constitutents in Liquid Water Clouds
液态水云中的反应性、挥发性和高溶解性成分
  • 批准号:
    9012805
  • 财政年份:
    1990
  • 资助金额:
    $ 8.85万
  • 项目类别:
    Standard Grant

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Collaborative Research: Aerosol Properties and Autoconversion during Cold-Air outbreak Experiment in the Sub-Arctic Region (CAESAR)
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