Field Identification of a Unique Globally Dominant Mechanism of Thunderstorm Electrification
Two wholly distinct studies involving TRMM-satellite global data have been conducte 1 d, one involving the relationship between lightning frequency f and brightness temperature, the other between f and ice-water-path.Both studies demonstrate that globally valid relationships exist between f and thundercloud ice-precipitation content, from which it follows that graupel pellets play a crucial role in thundercloud charging. Ground-based field studies provide further support for this conclusion and show that f is also strongly dependent upon the ice crystal content. All these findings are consistent with the non-inductive charging mechanism, but not with any other proposed mechanism of thunderstorm electrification. We conclude that the non-inductive mechanism dominates electric field growth and lightning production in all seasons - for both oceanic and terrestrial thunderstorms - on a global scale.
J. Latham W. A. Petersen W. Deierling H. J. Christian
NCAR, P.O. Box 3000, Boulder, CO 80301, USA;also at Centre for Atmospheric Science, The University o University of Alabama in Huntsville,320 Sparkman Drive, Huntsville, AL 35899, USA NCAR, P.O. Box 3000, Boulder, CO 80301, USA
国际会议
第13届国际大气电学会议(The 13th International Conference on Atmospheric Electricity)
北京
英文
2007-08-13（万方平台首次上网日期，不代表论文的发表时间）