CAREER: Quantifying the Sea Salt Aerosol Size Distribution in the Coastal Atmosphere: The Role of Wind and Waves

职业：量化沿海大气中海盐气溶胶尺寸分布：风和波浪的作用

• 批准号: 2145502
• 负责人: Alison Nugent
• 金额: $ 89.95万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2027-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2145502&HistoricalAwards=false
• 关键词: CAREER; Quantifying; Sea; Salt; Aerosol

This study will investigate the role of wind, waves, and other atmospheric and oceanic properties that influence the production of sea salt aerosol in coastal environments of three Pacific islands. Sea salt aerosol are natural particles suspended in the atmosphere, formed at the ocean surface from breaking waves and bursting bubbles. Despite their small size, they are important in the marine atmosphere as they directly and indirectly impact phenomena including solar radiation and cloud formation. However, due to scientists’ incomplete understanding of the sizes and number of particles produced by breaking waves, especially in coastal regions, it is difficult to assess their impacts. This study will use low-cost, 3D-printed instrumentation both for sampling sea salt aerosol, and for observing weather on multiple Pacific islands. Enhanced estimation of the amount of sea salt in the atmosphere and additional real time weather information will improve weather and climate predictions worldwide. Also, using high-quality, low-cost, hand-made instrumentation allows for this work to be accessible and engaging for students in a unique way, highlighting the role of curiosity, problem solving, and hands-on methodology from start to finish.The goal of this work is to investigate the role of the coastal environment in determining the size distribution of sea salt aerosol particles (SSA) measured in-situ within the coastal marine boundary layer. SSAs are especially important due to their role in direct and indirect radiative effects, including aerosol-cloud interactions, providing one of the largest uncertainties in future climate scenarios. It is notoriously difficult to measure large coarse mode SSA ( 3 microns), and as such, few observations of this size range exist. Using portable, low-cost, 3D-printed and Arduino controlled instrumentation, this study will regularly measure coarse mode SSA size distributions under a wide variety of environmental conditions and in multiple locations in order to provide a consistent, quantifiable, and climatological understanding of SSA production in tropical coastal environments. In addition, 3D-Printed Automatic Weather Stations (3D-PAWS) will be built and installed by undergraduate students in area schools on Oʻahu and training workshops will be provided on two additional Pacific Islands to jumpstart cyberinfrastructure and build capacity for atmospheric monitoring on remote Pacific islands. These efforts will lower barriers and create opportunities by providing the foundation for learning and implementing applicable science.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.

这项研究将研究影响三个太平洋岛屿沿海环境中海盐气溶胶产生的风、波浪和其他大气和海洋特性的作用。海盐气溶胶是悬浮在大气中的天然颗粒，由海洋表面形成。尽管它们的尺寸很小，但它们在海洋大气中很重要，因为它们直接和间接地影响包括太阳辐射和云形成在内的现象。然而，由于科学家对破碎产生的颗粒的大小和数量不完全了解。波浪，特别是在沿海地区，很难评估其影响。这项研究将使用低成本的 3D 打印仪器来采样海盐气溶胶，并观测多个太平洋岛屿的天气以及额外的实时天气信息。此外，使用高质量、低成本、手工制作的仪器可以让学生以独特的方式接触和参与这项工作，强调好奇心、解决问题和动手的作用。 -on方法从开始到这项工作的目标是研究沿海环境在确定沿海海洋边界层内原位测量的海盐气溶胶颗粒 (SSA) 尺寸分布中的作用，SSA 由于其直接作用而尤为重要。间接辐射效应，包括气溶胶-云相互作用，是未来气候情景中最大的不确定性之一，众所周知，测量大型粗模式 SSA（3 微米）非常困难，因此，很少有这种尺寸范围的便携式观测。 ,低成本、3D 打印和 Arduino 控制的仪器，本研究将定期测量各种环境条件下和多个地点的粗模式 SSA 尺寸分布，以便对热带地区 SSA 产生提供一致、可量化和气候学的了解此外，瓦胡岛地区学校的本科生将建造和安装 3D 打印自动气象站 (3D-PAWS)，并将在另外两个太平洋岛屿上举办培训研讨会。启动网络基础设施并建设偏远太平洋岛屿的大气监测能力。这些努力将为学习和实施适用科学奠定基础，从而降低障碍并创造机会。该奖项反映了 NSF 的法定使命，并通过使用基金会的评估被认为值得支持。智力价值和更广泛的影响审查标准。