Hot air balloon sea level, and humidity of the air surrounding. On a warm day, a balloon cannot lift as much as on a cool day, because the temperature required for launch will exceed the maximum sustainable for nylon envelope fabric. Also, in the lower atmosphere, the lift provided by a hot air balloon decreases about 3% for each 1,000 meters (1% per 1,000 ft) of altitude gained. Standard hot air balloons are known as Montgolfier balloons and rely solely on the buoyancy of hot air provided by the burner and contained by the envelope. This style of balloon was developed by the
Alabama Jubilee Hot Air Balloon Classic Alabama Legislature to designate the City of Decatur as the “Ballooning Capital of Alabama.” The Jubilee has been named a Top 20 Tourism Event in the Southeast for May by the Atlanta-based Southeast Tourism Society. The Alabama Jubilee is held on the grounds of Point Mallard Park, a municipal recreation complex that offers a water park featuring an aquatic center with a wave pool, Olympic-sized swimming pools, lazy river, and several water slides, as well as tennis courts, ball fields, hiking trails, campground, 18-hole championship golf course, indoor ice skating rink and recreation center. Alabama Jubilee Hot Air Balloon Classic