Alligators and an egret stand on the banks of the Bento Gomes river next to the Transpantaneira road at the Pantanal wetlands near Pocone, Mato Grosso state, Brazil, Monday, September 14, 2020. A vast swath of the vital wetlands is burning in Brazil, sweeping across several national parks and obscuring the sun behind dense smoke. (Photo by Andre Penner/AP Photo)

Bride Ana Vallejos, wearing a traditional “Caporales” Andean outfit, is escorted by her parents to her wedding celebration, in La Paz, Bolivia, Saturday, December 12, 2020. As a measure to reactivate the economy, the Bolivian government lifted restrictions to help curve the spread of the new coronavirus. Sporting, religious and cultural events may take place publicly until mid-January. (Photo by Juan Karita/AP Photo)

A woman reacts as she receives the AstraZeneca/Oxford vaccine under the COVAX scheme against coronavirus disease (COVID-19) at the Kenyatta National Hospital in Nairobi, Kenya on March 5, 2021. (Photo by Monicah Mwangi/Reuters)

This photo taken on July 13, 2023 shows a woman wearing traditional Uyghur attire posing for photos in the Old Kashgar tourist area in China's northwestern Xinjiang region. Chinese travellers throng the bazaars of old Kashgar, munching mutton kebabs and soaking up heavily commodified Uyghur culture – part of a government push to remould troubled Xinjiang into a tourism paradise. (Photo by Pedro Pardo/AFP Photo)

An Afghan burqa-clad woman carries a child as she walks along a road in Herat on October 1, 2023. (Photo by Mohsen Karimi/AFP Photo)

Valeria Ruiz, 10, from Colombia, does a cartwheel while visiting the U.S. Capitol, as Republican members of the House continue to work towards electing a new Speaker of the House in Washington, U.S., October 9, 2023. (Photo by Kevin Lamarque/Reuters)

In this photo taken late Thursday, May 7, 2015, a prison guard, left, and seated inmates cast shadows on a wall while waiting for the beginning of a rock concert by Romanian band Pro Musica, inside the Popa Sapca jail in Timisoara, western Romania. (Photo by Adi Piclisan/AP Photo)

Undulatus asperatus (or alternately, asperatus) is a cloud formation, proposed in 2009 as a separate cloud classification by the founder of the Cloud Appreciation Society. If successful it will be the first cloud formation added since cirrus intortus in 1951 to the International Cloud Atlas of the World Meteorological Organization. The name translates approximately as “roughened or agitated waves”.