A Comparison of Aerosol Organic Carbon Measurements and Models in the Free Troposphere at Mauna Loa Observatory (MLO)

莫纳罗亚天文台 (MLO) 自由对流层气溶胶有机碳测量和模型的比较

• 批准号: 0441274
• 负责人: Barry Huebert
• 金额: --
• 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: 2005
• 资助国家: 美国
• 起止时间: 2005-04-15 至 2011-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0441274&HistoricalAwards=false
• 关键词: Comparison; Aerosol; Organic; Carbon; Measurements; Comparison; Aerosol; Organic; Carbon; Measurements

This project will continue and enhance an ongoing measurement program at Mauna Loa Observatory (MLO) to routinely collect and analyze aerosol filter samples for non-sea salt sulfate (NSS), nitrate, sodium, ammonium, and nitric acid by now adding semi-continuous measurements of organic aerosol mass (OM). Instrumentation acquired under this award will make operationally defined measurements of organic carbon (OC) at MLO where air characteristic of the free troposphere can routinely be sampled. In addition, a number of seasonal intensive field measurement campaigns will be conducted at MLO to characterize OM in with even greater detail. The behavior and variability of the OC/NSS ratio will be determined over several years and through collaboration with other groups the results will be compared with numerical simulations using a variety of models. Results from this study will lead to an improved understanding of the role of organic carbon compounds in tropospheric aerosol chemistry, and a better quantification of organic aerosol mass will enable more accurate representations of organic matter in model treatments. The broader impacts of this work include continuing a long-term heritage of highly climate relevant observations at MLO, producing important insights on how to better constrain chemical transport models and reduce uncertainties in climate model simulations, and providing research and educational opportunities for students at the University of Hawaii.

该项目将继续并增强在Mauna LOA天文台（MLO）进行的持续测量程序，以常规收集和分析非海洋盐硫酸盐（NSS），硝酸盐，硝酸盐，钠，铵和硝酸的气溶胶过滤器样品，从而添加半连续测量有机体气溶胶质量（OM）。 根据该奖项获得的仪器将在MLO中对有机碳（OC）进行操作定义的测量值，在该测量中，可以常规采样自由对流层的空气特征。 此外，将在MLO进行许多季节性密集的现场测量活动，以更详细地表征OM。 OC/NSS比率的行为和可变性将在几年内确定，并通过与其他小组的协作与使用各种模型的数值模拟进行比较。 这项研究的结果将使人们对有机碳化合物在对流层气溶胶化学中的作用有了深入的了解，并且更好地定量有机气雾剂质量将使有机物在模型处理中更准确地表示。 这项工作的更广泛的影响包括在MLO中继续对高度气候相关观察的长期遗产，对如何更好地限制化学传输模型并减少气候模型模拟中的不确定性，并为夏威夷大学的学生提供研究和教育机会。