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| AGS-PRF: Changing Sources of Sea-salt Aerosol in Polar Regions: Climate Change Feedbacks and Implications for Atmospheric Oxidative Capacity in a Future, Warmer World | |
| 项目编号 | 1624738 |
| Hannah Horowitz | |
| 项目主持机构 | Horowitz Hannah M |
| 开始日期 | 2017-06-01 |
| 结束日期 | 2019-05-31 |
| 英文摘要 | Sea ice is major source of sea salt aerosols in the Polar Regions that occurs by complex wind driven lofting of saline frost flowers and snow. These processes are complex and neglected in current climate assessments. The observed dramatic retreat of the Arctic sea ice in spring in response to climate change can alter sea salt aerosols fluxes underscoring the need to include them in models. The research will examine this effect using high-resolution coupled climate-chemistry-sea ice models developed by the US and use them to improve IPCC climate assessments. The project will focus on implementing the open ocean and sea ice sea salt sources in the coupled US climate-sea ice (CESM-CICE4) and 3-D atmospheric chemistry transport model and use it to evaluate the climate and sea salt aerosol feedbacks in polar regions for future climate change scenarios consistent with IPCC AR5 runs. The coupled model will be run at very high resolution (0.5 degree atmosphere and 0.1 degree sea ice) to resolve these processes in detail. In addition to providing the first estimate of the indirect and direct radiative impacts of seas-salt feedbacks the work will also examine the changes in atmospheric chemistry via halogen activation that can alter the oxidative capacity and reactive gases in future climate states. |
| 资助机构 | US-NSF |
| 项目经费 | 86000 |
| 项目类型 | Fellowship |
| 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/69488 |
| 推荐引用方式 GB/T 7714 | Hannah Horowitz.AGS-PRF: Changing Sources of Sea-salt Aerosol in Polar Regions: Climate Change Feedbacks and Implications for Atmospheric Oxidative Capacity in a Future, Warmer World.2017. |
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