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| 2015 AAAR Conference Symposium Sponsorship: "The Role of Water in Aerosol Chemistry" | |
| 项目编号 | DE-SC0014420 |
| McNeill, Vivian | |
| 项目主持机构 | The Trustees of Columbia University in the City of New York |
| 开始日期 | 2015-08-01 |
| 结束日期 | 2016-07-31 |
| 英文摘要 | Biomass burning aerosols (BBA) are a major contributor to the total global aerosol budget of black carbon (BC) and organic carbon (OC), including light absorbing brown carbon (BrC). BBA are generated in the uncontrolled and often incomplete combustion of biomass and biofuels. The physiochemical properties of the emitted BBA particles vary widely and can change significantly through atmospheric processing. These variable properties govern their absorption of visible light in the atmosphere, directly affecting the earth’s radiation balance, and determine how they indirectly affect climate through changes to cloud particle formation and properties, affecting cloud albedo, coverage, and lifetime. The uncertainties in our understanding of the physical, chemical and optical properties of BBA particles mean that their impacts are poorly represented in climate models.The recent DOE ARM Biomass Burning Observation Project (BBOP) field campaign during the summer and fall of 2013 yielded a unique, extremely detailed set of trace gas and aerosol measurements in biomass burning plumes from wildfires in the northwest U.S. and from prescribed agricultural burns in the southeast U.S., including valuable information on downwind transformations close to the sources. The first part of this project will analyze data from BBOP and relate the airborne measurements to simultaneous measurements at the Mount Bachelor Observatory. The second part of the project will entail laboratory experiments to generate and characterize tar balls from biomass burning fuels. Although often observed in biomass burning plumes, the physical, chemical and optical properties of tar balls are poorly understood and their contribution to the climate impact of biomass burning plumes is not known. The third part of the project is aimed at incorporating new understanding about the properties and transformations of BBA into an aerosol box model and then into regional climate models. The overall research project will enhance the understanding of the lifecycle of BBA, improving both their representation in regional and global climate models and the techniques for future BBA measurements under ambient conditions. |
| 学科分类 | 09 - 环境科学;06 - 生物科学 |
| 资助机构 | US-DOE |
| 项目经费 | 5000 |
| 项目类型 | Grant |
| 国家 | US |
| 语种 | 英语 |
| 文献类型 | 项目 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/74119 |
| 推荐引用方式 GB/T 7714 | McNeill, Vivian.2015 AAAR Conference Symposium Sponsorship: "The Role of Water in Aerosol Chemistry".2015. |
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