Results 101 to 110 of about 465 (149)

Cloud-to-Ground Lightning Observations in Brazil

2009
A comprehensive review of cloud-to-ground (CG) lightning observations in Brazil is presented. Brazil is the largest country in the tropical region and it is believed to have the largest cloud-to-ground (CG) lightning activity in the world, estimated from thunderstorm days and satellite data in about 50 millions CG lightning flashes every year. Emphasis
Osmar Pinto, Iara R.C.A. Pinto, Marcelo M.F. Saba, Kleber P. Naccarato   +3 more
openaire   +1 more source

Negative cloud-to-ground lightning flashes in Malaysia

Journal of Atmospheric and Solar-Terrestrial Physics, 2014
The characteristics of the negative cloud-to-ground lightning flashes in Malaysia are studied by analyzing the electric fields generated by the whole flash in nanosecond resolution. A total of 405 strokes obtained from 100 successive negative cloud-to-ground lightning flashes were analyzed, which were recorded from seven convective thunderstorms during
Z.A. Baharudin, Noor Azlinda Ahmad, J.S. Mäkelä, Mahendra Fernando, Vernon Cooray   +4 more
openaire   +1 more source

Cloud‐to‐ground lightning in Hurricane Andrew

Journal of Geophysical Research: Atmospheres, 1994
The spatial and temporal distribution of cloud‐to‐ground lightning was examined in Hurricane Andrew of 1992. Lightning locations available from the National Lightning Detection Network were superimposed on infrared satellite images to relate lightning activity to hurricane cloud structure.
openaire   +1 more source

Positive cloud to ground lightning return strokes

Journal of Geophysical Research: Oceans, 1983
Several recent papers have reported positive cloud‐to‐ground lightning, but, in our opinion, none provides sufficiently direct evidence that positive return strokes occurred in any given case. Here we present observations that plainly demonstrate the occurrence of positive return strokes in a convective thunderstorm in Florida in August 1982.
William H. Beasley, Martin A. Uman, Douglas M. Jordan, Chidambar Ganesh   +3 more
openaire   +1 more source

Cloud-to-Ground Lightning in Malaysia: A Review Study

Applied Mechanics and Materials, 2016
Lightning has been the major cause of power interruptions in Malaysia. Malaysia is located near the equator having approximately 200 thunder days per year. It is known to be among the highest lightning activity country worldwide. TNB as the main power supply utility in Malaysia has made an effort to reduce the power interruptions via installation of ...
Chin Leong Wooi, Zulkurnain Abdul-Malek, Noor Azlinda Ahmad, Mehrdad Mokhtari, Amir Hesam Khavari   +4 more
openaire   +1 more source

Cloud Seeding and Cloud-to-Ground Lightning

Journal of Applied Meteorology, 1967
Abstract During the summers of 1958 to 1962, convective clouds over a mountain range in southeastern Arizona were seeded by means of airborne silver-iodide generators. The data collected do not allow a conclusion that the seeding influenced the amount of cloud-to-ground lightning.
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Positive cloud‐to‐ground lightning observations

Journal of Geophysical Research: Atmospheres, 1985
Cloud‐to‐ground lightning discharges have been studied for more than 50 years by means of visual, photographic, and electromagnetic observations as well as direct measurements of current. One of the first questions to be addressed was that of the sign of net effective charge transferred to earth.
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A comparison of intracloud and cloud-to-ground lightning discharges

Journal of Geophysical Research, 1960
Lightning discharges were investigated with high time-resolution equipment on both electric-field and electric-field-change meters. The analysis of the electrical records reveals that the late stages of intracloud discharges are very similar to those of cloud-to-ground discharges during the periods between successive return strokes (junction process)
N. Kitagawa, M. Brook
openaire   +1 more source

The charges that are deposited by cloud‐to‐ground lightning in Florida

Journal of Geophysical Research: Atmospheres, 1986
Data from a network of electric field mills at the NASA Kennedy Space Center have been computer analyzed to determine the parameters of a charge model that describes the locations and magnitudes of the net changes in the cloud charge distribution that are caused by cloud‐to‐ground lightning.
Launa M. Maier, E. Philip Krider
openaire   +1 more source

Continuing current in negative cloud‐to‐ground lightning

Journal of Geophysical Research: Atmospheres, 1989
Simultaneous single‐station electric field and multiple‐station TV measurements on 90 negative cloud‐to‐ground lightning flashes that occurred on 3 days in July 1979 near Tampa, Florida, have been analyzed for the following characteristics of electric field changes indicative of continuing current: frequency of occurrence, duration, duration of ...
T. Shindo, M. A. Uman
openaire   +1 more source