Characteristics Of Lightning Activity In Chongqing Affected By The Analysis Of Underlying Surface

Lightning as a United Nations recognized the ten worst natural disasters not only cause human and animal casualties directly, but also aviation, power, petrochemical, computer networks and buildings and other hazards are very obvious. Master the law of lightning activity to provide lightning protection for the appropriate reference, while an accurate prediction of lightning activity can while avoiding disadvantages, will minimize the hazards caused by lightning. Analysis of lightning activity in the past, when laws are generally used in a single lightning information and, if using ground lightning location information, data or space-based GPS observations of thunderstorm days of artificial data. These types of information laws in the analysis of regional lightning activity when the advantages and disadvantages. Ground lightning location information is to flash the main data recorded on the instructions of the large-scale lightning activity is poor; space-based satellite positioning data over the top by the time of the satellite, lightning activity of a region records were incomplete; and manual observation of thunderstorms daily data can only occur in thunderstorms a year to make a record of the number of days of thunderstorm activity rhythm of the specific instructions of the poor. In response, this paper carries 1998-2005 TRMM satellite lightning imaging sensor (Lightning Imaging Sensor-LIS) observations of the lightning data, lightning location LLS power system data and information in Chongqing Chongqing artificial thunderstorm lightning activity areas of law a statistical analysis, from the time and space regularity of lightning activity. And analysis of large scale weather circulation, land surface conditions, topography and other factors on the characteristics of Chongqing in the shape of lightning effects, the results showed that:(1) lightning in Chongqing significant seasonal variation of the distribution, mainly concentrated in the summer half year Lightning 4-9 month, most of which in July lightning, lightning occurs mainly in Chongqing in the night, the night the proportion of over 60% flash. (2) lightning distribution in Chongqing significantly affected by terrain, lightning, mainly in the mountains, valleys nearby. (3) characteristics of altitude change on the Lightning to a certain extent, the proportion of high altitude when the flash is being flash amplitude, large amplitude lightning increased significantly. (4) the distribution of underlying surface conditions on the Lightning have a certain impact, lightning, mostly in farmland, water, and pasture.