CNN Indonesia
Friday, 08 Mar 2024 10:58 IWST
The appearance of hollow clouds in the US, late January, which is not a natural phenomenon. (doc. NASA Earth Observatory image by Michala Garrison)
Jakarta, CNN Indonesia —
Phenomenon hollow cloud like donuts in the US captured from satellite shots belonging to the US aeronautics and space agency (NASA). Where did this cloud come from?
This hollow cloud was captured by NASA’s Terra Satellite near the west coast of Florida, USA on January 30. The photo of the perforated cloud was uploaded by NASA to the Visible Earth website on February 26.
The appearance of the clouds looked strange, as if someone had just made a hole in the sky.
“Scientists have speculated about holes in these clouds for decades, but it is now well understood that they are caused by airplanes,” the statement said. NASA.
And this is not a new phenomenon. Researchers, say NASA, has documented this phenomenon called Cavum Clouds since the 1940s. However, it wasn’t until about 15 years ago that scientists finally found an explanation.
“Cavums, also called hole-punch clouds and fallstreak holes, look so strange that people sometimes argue they are the features of flying saucers or other unknown anomalous phenomena,” the agency said.
“Viewed from below, it looks like a large circle or ellipse neatly cut out of the cloud, with a wisp of feathers left in the center of the hole.”
In fact, this phenomenon is not an ordinary cloud. Without human technology, the Cavum Cloud would never exist.
According to NASA, these clouds form when airplanes pass through the edges of mid-level altocumulus clouds (clouds made of very cold water droplets) according to research published in 2010 and 2011.
Experts at NASA’s Langley Research Center found in 2010 that the shallower the angle a plane passes through a cloud, the larger the cavity it leaves behind.
Analysis shows, quoted from Insiderall types of aircraft can produce Cavum Clouds, including large passenger jets, private jets, military jets, and turboprops.
The high frequency of flights at Miami International Airport is also said to increase the chances of this phenomenon.
“With more than 1,000 flights arriving at Miami International Airport each day, there are many opportunities for aircraft to encounter the atmospheric conditions necessary to produce Cavum,” NASA said.
Researchers also mention other factors that can influence the length of these clouds, including the thickness of the cloud layer, air temperature and the degree of horizontal wind shift.
The Terra satellite itself was designed to study changes in the Earth’s atmosphere and the impact of climate change. Researchers use data collected from satellites to map the impact of human activities and natural disasters.
(team/arh)
2024-03-08 03:58:32
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