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Latitudinal variations of cloud base height and lightning parameters in the tropicsThe observed reduction in cloud-to-ground lightning in the new-equational zone is examined from the perspective of the width of the main negative charge region. Thermodynamic observations of cloud base height also show a climatological minimum value in the near-equatorial region. The association of low cloud base with both narrow updrafts and narrow changing zones may impede the bridging of the large air gap to ground, and thereby suppress cloud-to-ground lightning activity. This width dependence may be more important than the approx. 10% variation in height of the freezing level in the encouraging flashes to ground.
Document ID
20060015716
Acquisition Source
Marshall Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Mushtak, V. C.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Williams, E. R.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Boccippio, D. J.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2006
Subject Category
Meteorology And Climatology
Distribution Limits
Public
Copyright
Other

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