DOI: 10.1002/2016JD026442
论文题名: Relationship between the global electric circuit and electrified cloud parameters at diurnal, seasonal, and interannual timescales
作者: Lavigne T. ; Liu C. ; Deierling W. ; Mach D.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2017
卷: 122, 期: 16 起始页码: 8525
结束页码: 8542
语种: 英语
英文关键词: atmospheric electricity
; ENSO
; global electric circuit
; lightning
; thunderstorms
英文摘要: In the early 1900s, J. W. Whipple began to validate C. T. R. Wilson's global electric circuit (GEC) hypothesis by correlating the diurnal variation of global thunder days with the diurnal variation of the fair weather electric field measured by the Carnegie Cruise. This study applies 16+ years of precipitation feature (PF) data from the Tropical Rainfall Measuring Mission, including lightning data from the Lightning Imaging Sensor, alongside 12 years of electric field measurements from Vostok, Antarctica, to further examine this relationship. Joint diurnal-seasonal variations of the electric field are introduced and compared with a variety of PF parameters that are potentially related to the GEC. All tested PF parameters showed significant correlations to the electric field on the joint seasonal-diurnal timescale, with the flash rate and volume of 30 dBZ between the −5°C and −35°C isotherms showing the best linear correlations with R2 values of 0.67 and 0.62, respectively. Furthermore, these relationships are analyzed during the two different phases of the El Niño–Southern Oscillation. Results show different seasonal-diurnal variations of the electric field during El Niño and La Niña periods, with enhancements in the electric field between the months of January through April at 16–24 UTC in La Niña years. A similar trend is shown in global PF parameters, indicating relationships between the variations seen in the fair weather electric field and the variations of global PFs at diurnal, seasonal, and interannual timescales. This provides further evidence that PFs around the globe have a direct connection to the GEC. ©2017. American Geophysical Union. All Rights Reserved. 资助项目: NNXAD76G
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62587
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Department of Physical and Environmental Sciences, Texas A&M University, Corpus Christi, TX, United States; Department of Aerospace Engineering Sciences, University of Colorado Boulder, Boulder, CO, United States; Science and Technology Institute, Universities Space Research Association, Huntsville, AL, United States
Recommended Citation:
Lavigne T.,Liu C.,Deierling W.,et al. Relationship between the global electric circuit and electrified cloud parameters at diurnal, seasonal, and interannual timescales[J]. Journal of Geophysical Research: Atmospheres,2017-01-01,122(16)