Taoyuan:A student from National Central University (NCU) in Taoyuan has successfully captured rare images of red sprites on three occasions. These images have the potential to enhance scientific understanding of the interaction between thunderstorms and the upper atmosphere.

According to Focus Taiwan, Wang Tung, a student in NCU's Department of Space Science and Engineering, documented these phenomena between May and September. Using camera equipment set up on a dormitory rooftop, Wang managed to record the elusive events, including one that resembled an angel's wings—a rare structure typically observed at higher latitudes.

Red sprites, often referred to as "space lightning," are transient luminous events occurring 50 to 90 kilometers above thunderstorms. Lasting only milliseconds to tens of milliseconds, they are difficult to spot with the naked eye. The red glow is produced when nitrogen molecules in the upper atmosphere become energized.

Wang first detected a sprite on May 27 by directing his camera northwest to monitor thunderstorms over southeastern China. Despite clear skies over Taoyuan, he captured a red flash resembling a tentacle. Additional recordings were made on September 13 and 22, linked to thunderstorms near China's Fuzhou, Wenzhou, and Shantou.

The student described his rooftop observation sessions as lengthy and solitary, often in challenging weather conditions. His excitement upon confirming the first capture led to an accidental bump on his head. Wang noted that capturing such phenomena involves tracking thunderstorms, aiming the camera correctly, and patient waiting. With basic knowledge and suitable equipment, he believes others can also capture these events.

Professor Kuo Cheng-ling of NCU highlighted that Wang's recordings could help researchers study the altitudes of sprite occurrences and their relationship with electron density in the middle atmosphere. The third recording, featuring downward-extending branches known as an "angel sprite," is more commonly seen in higher-latitude areas like Europe and Japan. Meanwhile, Professor Liu Cheng-yen suggested that the red glow might indicate electrical activity reaching the lower ionosphere, offering insights into the thunderstorm-ionosphere connection.

Source Focus Taiwan