Climate Change Data Portal
| Exploring Natural Aerosol Formation from DMS Oxidation and Implications for Aerosol Forcing | |
| 项目编号 | DE-SC0018934 |
| Kroll, Jesse | |
| 项目主持机构 | Massachusetts Institute of Technology |
| 开始日期 | 2018-08-15 |
| 结束日期 | 2021-08-14 |
| 英文摘要 | The United States Southern Great Plains (SGP) is the genesis for much of the warm season precipitation in the central and eastern United States. While atmospheric thermodynamics and large-scale dynamics play an important role in formation of precipitation, precipitation mechanisms are also sensitive to aerosols. Aerosols can suppress precipitation as cloud condensation nuclei (CCN) or act as ice nucleating particles (INP) in deep convective clouds. The proposed work will evaluate the role of primary biological aerosol particles in the region and its influence on cloud formation. Specifically, we focus on biological aerosol in the form of pollen, one type of primary biological aerosol particle that is emitted in large yet variable quantities from vegetation in the mid latitudes. Field observations provide evidence of pollen in the planetary boundary layer and pollen components in cloud droplets and fine particulate matter. Further, pollen grains can easily rupture when wet, forming smaller, sub pollen particles with sizes less than one micron. This proposal will simulate the emission of pollen and the generation of sub pollen particles, which have been shown to be both cloud condensation nuclei and ice nucleating particles. In the proposed work, we will address the following questions: What are the physical and chemical signatures of biological aerosol such as pollen in SGP ARM measurements? What is the role of pollen-derived particles on deep convection and precipitation in the Central US? Using measurements from the DoE SGP ARM site and recent airborne campaigns, we will evaluate the signatures of pollen and pollen-derived aerosols on optical properties, cloud properties and precipitation. We will identify pollen-driven events over the past 15 years of observations and use the Weather Research and Forecasting Model with fully coupled chemistry (WRF-Chem) to conduct chemically realistic simulations of aerosols during and summer mesoscale convective events in the Southern Great Plains. This work will improve our understanding of the role of biological aerosol on clouds and precipitation in the Central United States, and place these results in context with anthropogenically-driven processes. |
| 学科分类 | 09 - 环境科学;06 - 生物科学 |
| 资助机构 | US-DOE |
| 项目经费 | 695059.55 |
| 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/73152 |
| 推荐引用方式 GB/T 7714 | Kroll, Jesse.Exploring Natural Aerosol Formation from DMS Oxidation and Implications for Aerosol Forcing.2018. |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| [Kroll, Jesse]的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| [Kroll, Jesse]的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| [Kroll, Jesse]的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
