Meteorological Research in Oxidants and Aerosols over the North Atlantic: AEROCE Phase III

北大西洋氧化剂和气溶胶的气象研究：AEROCE 第三阶段

• 批准号: 9528907
• 负责人: John Merrill
• 金额: $ 48.25万
• 依托单位: University of Rhode Island
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-09-15 至 2000-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9528907&HistoricalAwards=false
• 关键词: Meteorological; Research; Oxidants; Aerosols; over

9528907 Merrill The goal of this research is an understanding of the role of meteorological influences on the oxidizing capacity of the atmosphere. In collaboration with a team of atmospheric chemists and modelers we will study the chemical behavior of the North Atlantic Ocean atmosphere using surface-based measurements, ozonedonse, aircraft and remote sensing techniques. Our work entails analysis to quantify the continuous and dynamic influence of transport and removal processes on ozone and a number of chemical tracers. Pulses of high surface ozone on Bermuda are often associated with the passage of cold fronts. During the spring of 1995 we will observe the meteorological and chemical properties across fronts from aircraft and ozonesondes and assess the relative contributions of different sources. In conjunction with the field intensives proposed for AEROCE phase III, we will provide extensive operational meteorological support. In addition, we will be responsible for integration of the resulting meteorological and chemical observations and will collaborate with other AEROCE PI's in their interpretation. A series of high- altitude aircraft flights are proposed for spring of 1996 and we will provide meteorological information to differentiate the relative importance of natural and anthropogenic sources. We will use potential vorticity analyses to assess the importance of transport from the stratosphere and upper troposphere into the middle and lower troposphere. We will prepare isentropic trajectory analysis and combine these with the chemical observations using cluster analysis to filter the data and identify data collected under similar large scale motion. These will allow us to prepare chemical climatologies not only for 03, but for CO and other tracers. With several years of ozone data, we will determine the extent to which large-scale atmospheric motion controls the interannual variability over the NAO. Finally, we will develop detailed case s tudies for selected periods of meteorological interest, as well as during the groundbased and airborne intensives. For these times we will make use of remotely- sensed rainfall and other meteorological data. Results from these investigations will help to resolve questions regarding the meteorological processes controlling ozone cycling over the NAO.

9528907 Merrill 这项研究的目标是了解气象影响对大气氧化能力的作用。 我们将与大气化学家和建模师团队合作，利用地面测量、臭氧监测、飞机和遥感技术研究北大西洋大气的化学行为。 我们的工作需要进行分析，以量化运输和去除过程对臭氧和许多化学示踪剂的连续动态影响。 百慕大表面高臭氧脉冲通常与冷锋的通过有关。 1995 年春天，我们将通过飞机和臭氧探空仪观察锋面的气象和化学特性，并评估不同来源的相对贡献。 结合 AEROCE 第三阶段拟议的现场强化，我们将提供广泛的业务气象支持。 此外，我们将负责整合由此产生的气象和化学观测结果，并与其他 AEROCE PI 合作进行解释。 计划于 1996 年春季进行一系列高空飞机飞行，我们将提供气象信息来区分自然和人为来源的相对重要性。 我们将使用位涡分析来评估从平流层和对流层上层到对流层中层和下层传输的重要性。 我们将准备等熵轨迹分析，并使用聚类分析将其与化学观察相结合，以过滤数据并识别在类似的大规模运动下收集的数据。 这些将使我们不仅能够为 03 准备化学气候学，而且还能为 CO 和其他示踪剂准备化学气候学。 通过几年的臭氧数据，我们将确定大规模大气运动控制 NAO 年际变化的程度。 最后，我们将为选定的气象兴趣时期以及地面和机载强化期间开展详细的案例研究。 在这些时候，我们将利用遥感降雨量和其他气象数据。 这些调查的结果将有助于解决有关控制 NAO 臭氧循环的气象过程的问题。