The discussion, which lasted over an hour at the Shram Shakti Bhavan in New Delhi, was attended by social media platforms such as Meta, Google, and Snap, and representatives from various IT companies. Representatives from several US-based companies reportedly requested an extension for the consultation period, citing the coinciding holiday season in other countries. Subsequently, the rules are expected to be notified in January, as per sources. The meeting, chaired by Minister of State for Electronics and Information Technology Rajeev Chandrasekhar, discussed the DPDP Law and the upcoming rules that will define the legislation's parameters.įollowing the release of the draft rules for consultation, the government plans to allow the industry a week to provide feedback. This was conveyed to the industry during a consultation meeting held on December 20, 2022, at the Ministry of Electronics and Information Technology (MeitY). Roll clouds have not been associated with funnel clouds or tornado as they are horizontal vortex.The government intends to release the draft rules for the Digital Personal Data Protection Law in the coming days and notify it in January, according to sources. They have been reported at different locations inland, including Kansas. However, similar features can be created by downdrafts from thunderstorms or advancing cold front, and are not exclusively associated with coastal regions. Such coastal roll clouds have been seen in many places, including California, the English Channel, Shetland Islands, the North Sea coast, coastal regions of Australia, and Nome, Alaska. One of the main causes of the Morning Glory cloud is the mesoscale circulation associated with sea breezes that develop over the Cape York Peninsula and the Gulf of Carpentaria. One of the most famous frequent occurrences is the Morning Glory cloud in Queensland, Australia, which can occur up to four out of ten days in October. This rolling is due to the variation in speed and direction of the winds with altitude ( wind shear). They are a solitary wave called a soliton, which is a wave that has a single crest and moves without changing speed or shape. Roll clouds usually appear to be "rolling" about a horizontal axis. They differ from shelf clouds by being completely detached from other cloud features. Ī roll cloud ( Cloud Atlas name volutus) is a low, horizontal, tube-shaped, and relatively rare type of arcus cloud. An extreme example of this phenomenon looks almost like a tornado and is known as a gustnado. A very low shelf cloud accompanied by these signs is the best indicator that a potentially violent wind squall is approaching. In a severe case there will be vortices along the edge, with twisting masses of scud that may reach to the ground or be accompanied by rising dust. Shelf clouds usually appear on the leading edge of a storm, while wall clouds are usually at the rear of the storm.Ī sharp, strong gust front will cause the lowest part of the leading edge of a shelf cloud to be ragged and lined with rising fractus clouds. This is likely to be a mistake, since an approaching shelf cloud appears to form a wall made of cloud. People seeing a shelf cloud may believe they have seen a wall cloud. As the lower and cooler air lifts the warm moist air, its water condenses, creating a cloud which often rolls with the different winds above and below ( wind shear). This outflow cuts under warm air being drawn into the storm's updraft. Cool, sinking air from a storm cloud's downdraft spreads out across the land surface, with the leading edge called a gust front. Rising air motion can often be seen in the leading (outer) part of the shelf cloud, while the underside can often appear as turbulent and wind-torn. Roll clouds may also arise in the absence of thunderstorms, forming along the shallow cold air currents of some sea breeze boundaries and cold fronts.Ī shelf cloud is a low, horizontal, wedge-shaped arcus cloud attached to the base of the parent cloud, which is usually a thunderstorm cumulonimbus, but could form on any type of convective clouds. They most frequently form along the leading edge or gust fronts of thunderstorms some of the most dramatic arcus formations mark the gust fronts of derecho-producing convective systems. Roll clouds and shelf clouds are the two main types of arcus clouds. An arcus cloud is a low, horizontal cloud formation, usually appearing as an accessory cloud to a cumulonimbus.
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