Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | DE-SC0020091 |
| Collaborative Proposal: Fire, dust, air and water: Improving aerosol biogeochemistry interactions in ACME | |
| Bond, Tami | |
| 主持机构 | Colorado State University |
| 开始日期 | 2019 |
| 结束日期 | 2021 |
| 资助经费 | 157200(USD) |
| 项目类别 | Grant |
| 资助机构 | US-DOE（美国能源部） |
| 语种 | 英语 |
| 国家 | 美国 |
| 英文简介 | Aerosol-biogeochemistry interactions will have important consequences for human health, ecosystem services, and climate feedbacks over the next several decades. In this proposal we seek to link how human activities on land, including direct industrial emissions and landscape fires, impact the atmosphere and the biogeochemistry of the ocean and land. Our overall goal is to complement existing work at DOE labs to improve the capability and performance of the E3SM model in short-term, high-resolution projections of climate. Projections of ocean uptake of anthropogenic carbon are highly dependent on the details of the ocean physical and biogeochemistry parameterizations. Potentially equally important are the estimates of increases in iron and soluble nitrogen deposition in aerosols to the open ocean, but there are substantial uncertainties in these feedbacks. The E3SM land model currently simulates natural and anthropogenic fires, but improvement is needed to more accurately simulate fire responses to climate variability as well as fire contributions to terrestrial climate feedbacks. Our proposed work is separated into the following 5 tasks: i) improve representation of fire dynamics in both boreal and tropical ecosystems, ii) improve estimates of industrial emissions of iron and phosphorus, iii) improve representation of atmospheric iron, phosphorus and nitrogen transport, chemistry and deposition, iv) improve representation of iron, phosphorus and nitrogen deposition impacts on ocean biogeochemistry, and v) couple emissions into atmosphere, to deposition onto land and ocean biogeochemistry. For all 5 tasks, we will conduct offline and coupled transient experiments of the historical period to enable comparison with available aerosol and land surface observations. We will also conduct simulations, showing the importance of the inclusion of these processes for future climate projections. This proposal addresses four of the six priorities within the call by improving the representation of fire, industrial combustion sources, and desert dust and adding iron and soluble iron to the atmospheric chemistry (1). Our work will focus on improving ocean biogeochemistry and the response of the oceans to anthropogenic atmospheric iron and nitrogen (3). We will also improve the representation of land disturbance on fires and fire mediated carbon cycle feedbacks in the land model (4). Finally we will couple the land, atmosphere and ocean biogeochemical systems (6) and explore how this coupling changes the feedbacks in the climate system. |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/356079 |
| 推荐引用方式 GB/T 7714 | Bond, Tami.Collaborative Proposal: Fire, dust, air and water: Improving aerosol biogeochemistry interactions in ACME.2019. |
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