In 1999, HM King Bhumibol discovered a new technique to gain more cloud density to increase the amount and extent of rainfall. He named the new cloud-seeding technique "Super Sandwich". More new techniques are being discovered and introduced to the people involved. His Majesty's ingenuity for inventing the rainmaking technology has been widely recognized and has made Thailand the centre of tropical rainmaking activities in this region.
Among the awards His Majesty received is a gold medal for the Royal Rainmaking with mention from the Brussels Eureka 2001 as the invention that is beneficial to the public.
Documents and textbooks about rainmaking have been produced, by royal permission, in accordance with the King's guidelines to serve as reference for other following operations. The King himself always gave advice on rainmaking techniques. Royal rainmaking operations have greatly benefited farmers throughout Thailand by solving the water shortage problem and increasing agricultural production to a considerable extent. His Majesty, thus, is eulogised as Father of Royal Rainmaking.