| 项目编号: | 1651411
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| 项目名称: | Collaborative Research: CEDAR--Assimilative Analysis of Low- and Mid-latitude Ionospheric Electrodynamics |
| 作者: | Astrid Maute
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| 承担单位: | University Corporation For Atmospheric Res
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| 批准年: | 2017
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| 开始日期: | 2017-08-01
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| 结束日期: | 2020-07-31
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| 资助金额: | 5000
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| 资助来源: | US-NSF
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| 项目类别: | Continuing grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Atmospheric and Geospace Sciences
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| 英文关键词: | cu-boulder
; multi-faceted research approach
; low-latitude electrodynamics
; postdoctoral researcher
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| 英文摘要: | The phenomenology of the Earth's equatorial ionosphere with respect to vertical profiles of basic parameters such as the neutral wind and temperature as well as plasma density and ion/electron temperatures is complex. The root causes of the complexity lie in the mutually coupled dynamics of thermospheric winds, conductivity, electric fields and currents operating under the influence of the geomagnetic field. This region is also exposed to the continual varying conditions of both terrestrial weather and space weather, which taken together give rise to large day-to-day variability. The project's objective is to achieve the development of a comprehensive data assimilation approach tailored specifically to the problem of low-latitude electrodynamics that would close the gap in our understanding of the origins of longitudinal dependence and its day-to-day variability. The project would broaden the education and training experiences of a graduate student at University of Texas Dallas (UTD) and a postdoctoral researcher at University of Colorado Boulder (CU-Boulder) by their participation in this multi-faceted research approach. The UTD graduate student will spend a summer visiting CU-Boulder and NCAR for training in the use of numerical modeling and data assimilation tools. The investigation is highly relevant to the need of the modern society for more powerful and reliable communication, navigation and positioning systems.
Specific science questions to be addressed in this project include 1) the quantitative breakdown of the causes of the observed day-to-day variability of daytime large scale equatorial phenomena along with its longitudinal and seasonal dependency; and 2) to what extent is the longitudinal dependence controlled by the geometry and magnitude of geomagnetic fields, and by the atmospheric tides originating from longitudinal asymmetric sources on the Earth's surface. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/89449
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| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
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| Recommended Citation: | |
Astrid Maute. Collaborative Research: CEDAR--Assimilative Analysis of Low- and Mid-latitude Ionospheric Electrodynamics. 2017-01-01.
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