gaqfantasy.blogg.se

On the large scale, Morning Glories are usually associated with frontal systems crossing central Australia and high pressure in northern Australia.

One of the main contributors for the formation of the morning glory clouds is the mesoscale circulations associated with a difference in sea breezes that develop over the Peninsula and the Gulf. Multiple studies have followed since then, proposing diverse mathematical models explaining the complex movements of air masses in the region. The first studies were published by Reg H. The Morning Glory cloud of the Gulf of Carpentaria has been studied by multiple teams of scientists since the early 1970s.

Royal Australian Air Force pilots first reported this phenomenon in 1942. The local Garrwa Aboriginal people called it kangólgi. Unusual cloud formations have been noticed here since ancient times.

The wave may occur without the appearance of any clouds. They have been called "the biggest waves on the planet". The cloud can also be described as a solitary wave or a soliton or an undular bore, which is a wave that has a single crest and moves without changing speed or shape. The cloud quickly dissipates over land where the air is drier. In the front of the cloud, there is strong vertical motion that transports air up through the cloud and creates the rolling appearance, while the air in the middle and rear of the cloud becomes turbulent and sinks. Showers or thunderstorms may develop in its wake. Cloud is continuously formed at the leading edge while being eroded at the trailing edge. The Morning Glory is often accompanied by sudden wind squalls, intense low-level wind shear, a rapid increase in the vertical displacement of air parcels, and a sharp pressure jump at the surface. Three distinct types of Morning Glory clouds have been identified. Sometimes there is only one cloud, sometimes there are up to ten consecutive roll clouds. The cloud often travels at the rate of 10 to 20 metres per second. In an aircraft there is a significantly better chance of sighting the cloud.Ī Morning Glory cloud is a roll cloud, or arcus cloud, that can be up to 1,000 kilometres (620 mi) long, 1 to 2 kilometres (0.62 to 1.24 mi) high, often only 100 to 200 metres (330 to 660 ft) above the ground. Often they start to break up before arriving at Burketown or pass to the north and only stay well formed over water. During the 2012 season there were only four to be seen from there, but quite a few ragged unspectacular cloud lines were seen. There are generally only a handful of well formed spectacular clouds during this period at Burketown. The town attracts glider pilots intent on riding this phenomenon. Morning Glory clouds can be observed from Burketown from late September to early November.