Collaborative Research: The Processing and Radiative Properties of Aerosols over the Western North Atlantic Ocean at Bermuda

合作研究：百慕大北大西洋西部气溶胶的处理和辐射特性

• 批准号: 0541570
• 负责人: William Keene
• 金额: $ 101.49万
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0541570&HistoricalAwards=false
• 关键词: Collaborative; Research; Processing; Radiative; Properties

The primary objectives of this project are: 1) To characterize major processes controlling the chemical, physical, and optical properties of near-surface aerosols, including elemental and organic carbon (EC/OC), over the western North Atlantic Ocean; 2) To quantify long-term trends in aerosol concentrations and fluxes and assess their influences on climate forcing; and 3) To provide data for and to collaborate with (a) the modeling community to develop reliable predictive capabilities for direct climate forcing by aerosols and (b) the remote sensing community to improve the accuracy of algorithms used to retrieve atmospheric and oceanic information. Super- and sub-micron diameter aerosols will be sampled daily at Bermuda and analyzed for EC/OC, spectrally resolved absorption, major organic and inorganic ions, and mineral aerosol mass. Aerosol light scattering will be measured continuously, and wet-deposition fluxes of major ions and EC/OC will be quantified. In collaboration with NASA, profiles of aerosol backscatter, extinction, and cloud height will be measured continuously. Three-dimensional back trajectories will be calculated and clustered into characteristic transport regimes. Data will be integrated into climatologies of aerosol chemical, physical, and optical properties as a function of transport regime, and long-term trends will be evaluated. Individual cases representative of major regimes will be interpreted in conjunction with satellite-derived humidity and aerosol optical depth fields and infrared (IR) cloud fields.This effort will enhance efforts to predict the influence of changing aerosol composition on radiative transfer and, in turn, on meteorology and climate. Broader impacts also include training of undergraduate and graduate students in atmospheric chemistry and physics.

该项目的主要目标是：1）表征控制北大西洋西部的近地表气溶胶（包括元素和有机碳（EC/OC））的化学，物理和光学特性的主要过程； 2）量化气溶胶浓度和通量的长期趋势，并评估它们对气候强迫的影响； 3）为（a）提供数据并与（a）建模社区共同开发可靠的预测能力，以通过气溶胶的直接气候强迫和（b）遥感社区提高用于检索大气和海洋信息的算法的准确性。 超级和亚微米直径的气溶胶将每天在百慕大进行采样，并分析EC/OC，光谱溶解的吸收，主要有机离子和无机离子以及矿物质气溶胶质量。 将连续测量气溶胶光散射，并将量化主要离子和EC/OC的湿沉积通量。 与NASA合作，将连续测量气溶胶反向散射，灭绝和云高度的轮廓。 将计算三维后退轨迹并将其聚集到特征运输方案中。 数据将纳入气溶胶化学，物理和光学性质的气候，作为运输状态的函数，并将评估长期趋势。 代表主要制度的个体案例将与卫星衍生的湿度以及气溶胶光学深度场和红外（IR）云场一起解释。这项工作将加强努力，以预测变化气溶胶组成对辐射转移的影响以及对气象和气候的影响。 更广泛的影响还包括对大气化学和物理学的本科和研究生的培训。