There are three reasons for the increasing trend of thunderstorm weather and its intensity in Leizhou Peninsula.

(1) is related to the geographical distribution of land and sea. Leizhou Peninsula and Hainan Island are located at the southernmost tip of China, separated by the narrow Qiongzhou Strait, and connected to the Beibu Gulf in the west. In summer, under the strong sunlight, the land surface on both sides of the Taiwan Strait heats up rapidly, and the heat capacity of seawater is large, but the temperature of seawater rises slowly. At this time, a thermal cycle will be formed between the land and the ocean, with the land as the updraft area and the ocean as the downdraft area. The formation of this land-sea thermal circulation is very beneficial to the development of strong convection.

(2) It is related to the influence of weather system. In spring (March-May), the active frontal trough in South China will bring spring thunder to Leizhou Peninsula. During the four months from May to August, the sky over Leizhou Peninsula is often at the edge of the western extension ridge of the western Pacific subtropical high, and the ground is often at the front end of the southwest trough. In this weather situation, southerly airflow prevails from the ground to the sky in both places, with abundant water vapor, and considerable unstable energy is often stored in the air, which often leads to the development of thunderstorms.

(3) It is related to the activities of tropical clouds. Leizhou Peninsula is often influenced by tropical weather systems. If affected by tropical depression, easterly wave, typhoon trough and intertropical convergence zone, there will be strong thunderstorms. Because most of these systems come from tropical ocean surface, the air they bring is high temperature, high humidity and has strong convergence and upward movement, so it is often easy to cause thunderstorm weather.

Reference:/kppd/kppdqxsj/kppdtqqh/2012/t20121215 _197/kloc-0.