HyperOVATION:  Continuous Global Auroral Imaging at High Cadence

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项目编号	1408812
	HyperOVATION: Continuous Global Auroral Imaging at High Cadence
	Elizabeth Mitchell
主持机构	Johns Hopkins University
项目开始年	2015
	2015-10-01
项目结束日期	2018-09-30
资助机构	US-NSF
项目类别	Continuing grant
项目经费	355790(USD)
国家	美国
语种	英语
英文摘要	The coupling of the solar wind with Earth's magnetic field gives rise to a range of disturbance effects in the space environment near Earth. Communications, navigation and energy production and distribution can be significantly affected by this space weather. The ability to forecast disturbances that may impact these technologies hinges upon detailed knowledge and understanding of the connected Sun-Earth system, including complicated coupling processes between the magnetosphere and ionosphere. A particular aspect of the latter is the deposition of energy in the upper atmosphere, especially at high latitudes in the auroral zone. Energization of the upper atmosphere during geomagnetic storms happens in several ways. One energy source is energetic particles precipitating along magnetic field lines into the upper atmosphere and creating the wonderful auroral displays that are a visual manifestation of space weather. The aim of this project is the creation of a tool to provide detailed global information about the auroral particle precipitation at a high cadence over the last three decades. Unlike existing statistical precipitation models this new resource will facilitate studies of the global dynamics as well as the development of local features. Ultimately, the results of the project will lead to improved local forecasting capabilities for auroral precipitation and associated space weather effects. The project also pursues significant education and training goals. The PI is an early career female scientist and the project will provide her with an excellent opportunity to accomplish an important step on the path towards a successful independent scientific research career. Summer internships for undergraduate students will also be provided as part of the project. The proposal focuses on the development of a powerful new tool (HyperOVATION) which will combine DMSP precipitation observations with superMAG global magnetic field maps to produce high cadence (1 min) maps of the auroral oval using next generation software based on OVATION-SM. Unlike other precipitation models (including OVATION and OVATION-SM) that produce climatologies of precipitation within broad ranges of solar and geomagnetic parameters and thus have no local detail, HyperOVATION will ingest local information as well as global information and produce precipitation maps consistent with the detailed patterns derived from magnetometers by SuperMAG. These global maps will be generated separately for mono-energetic, diffuse, broadband and ion auroras. During the course of the model development, this tool will be used to answer questions about the auroral precipitation and its relationship to the local and global auroral currents.
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文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/68894
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Elizabeth Mitchell.HyperOVATION: Continuous Global Auroral Imaging at High Cadence.2015.