Global Coordination of Atmospheric Electricity Measurements (GloCAEM)

GSTDTAP

项目编号	NE/N013689/1
	Global Coordination of Atmospheric Electricity Measurements (GloCAEM)
	[unavailable]
主持机构	University of Reading
项目开始年	2016
	2016-02-01
项目结束日期	2018-01-31
资助机构	UK-NERC
项目类别	Research Grant
国家	英国
语种	英语
英文摘要	It is well established that Earth has a "Global atmospheric Electric Circuit" (GEC), through which charge separation in thunderstorms sustains large scale current flow around the planet. The GEC generates an atmospheric electric field which is present globally, and is typically 100V/m near the surface in fair weather conditions. Measurements of electric field have been shown to include information about global thunderstorm activity, local aerosol concentrations and cloud cover, as well as changes in the space weather environment. Recent work has also suggested that atmospheric electrical changes may be effective as earthquake precursors, as well as being sensitive to release of radioactivity, as evidenced by the Fukushima disaster in 2011. A current NERC Independent Research Fellowship entitled "Understanding energetic particle effects on atmospheric processes" also investigates a mechanism by which vertical current flow in the GEC can affect layer cloud microphysics, thereby providing a route by which space weather changes can alter tropospheric weather processes through atmospheric electricity. The global nature of the GEC means that in order that truly global signals are considered in understanding the processes within the circuit, many validating measurements must be made at different locations around the world. To date, no genuinely global network of FW atmospheric electricity measurements has ever existed, therefore, given the growing number of groups now involved in atmospheric electricity monitoring, such a proposal is timely. This project will bring these experts together to make the first steps towards an effective global network for FW atmospheric electricity monitoring. A specific objective of the project will be to establish the first modern archive of international FW atmospheric electric field data in close to real time to allow global studies of atmospheric electricity to be straightforwardly and robustly performed. Direct communication between network members will be facilitated by two workshops, hosted by the University of Reading towards the beginning and end of the project. The first of these will facilitate discussion of measurement practises and instrumentation, as well as establish recording and archiving procedures to archive electric field data in a standardised, easily accessible format. CEDA-BADC have agreed to support the creation of a data repository and a data manager, employed by the University of Reading, who will be responsible for liasing between CEDA-BADC and the project partners to upload data. In terms of scientific objectives, the PI will lead an investigation of space weather influences on the electric field measurements stored in the data repository. Evidence for influence from events such as solar flares, coronal mass ejections, and heliospheric current sheet crossings during the past three solar cycles will be examined using statistical techniques including super epoch analysis. During the second workshop, an outline for a peer reviewed publication describing the details of the network and data repository, as well as initial scientific findings will also be produced. This will form the basis for a joint publication from all the project partners and will help to advertise the network to the wider scientific community.
来源学科分类	Natural Environment Research
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/86036
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	[unavailable].Global Coordination of Atmospheric Electricity Measurements (GloCAEM).2016.