So, for how long has it been disappearing and reappearing? “We have been investigating this intriguing phenomenon and were expecting to see such a cloud form around now,” explains Jorge Hernandez-Bernal, PhD candidate at the University of the Basque Country (Spain) and lead author of the ongoing study. A freaky elongated cloud has been appearing over the same volcano on Mars that planetary scientists simply had to give it a name. The elongated cloud hovering near Arsia Mons this year was also observed with the visible and near-infrared mapping spectrometer, OMEGA, and the High Resolution Stereo Camera (HRSC) on Mars Express, providing scientists with a variety of different data to study this phenomenon. A mysteriously long and thin cloud has appeared again over the 20,000-meter-high Arsia Mons volcano on Mars. A mysteriously long, thin cloud has again appeared over the Arsia Mons volcano on Mars. It is formed when local winds interact with the topography in a certain way and not because of the volcano it forms over. Wow! The plume was spotted earlier this month above Arsia Mons in the southern hemisphere. The Arsia Mons Elongated Cloud (AMEC) is a lee cloud that is spotted over the 20-kilometers (12 miles) high Arsia Mons dormant volcano on Mars. The Arsia Mons Elongated Cloud (AMEC) is a lee cloud that is spotted over the 20-kilometers (12 miles) high Arsia Mons dormant volcano on Mars. July 2020; Conference: XIV Reunión Científica de la Sociedad Española de Astronomía Image via ESA. A mysteriously long, thin cloud has again appeared over the 20-km-high Arsia Mons volcano on Mars. Sa taille change tout au long de la journée martienne - le matin, il s'allonge, parallèlement à l'équateur. Researchers have named it the Arsia Mons Elongated Cloud (AMEC). The cloud can grow to be up to 1800 km (1120 miles) long. Picture: ESA. Photo credit: ESA/GCP/UPV/EHU Bilbao A bizarre thin elongated cloud has recently appeared over the 12.4-mile high Arsia Mons volcano on Mars. Made of water ice, the elongated cloud sits 12.4 miles above the volcano Arsia Mons and stretches some 1,110 miles in length. The stream forms as the airflow is influenced by the side of the volcano that does not face the wind, baffling scientists. Scientists continue to investigate. Izduženi oblak uz Arsia Mons) je ponavljani vremenski fenomen koji se formira svake marsovske godine oko južnog solsticija nad Arsia Monsom, a ponavlja se 80 dana ili čak i više, nakon brzog dnevnog ciklusa. Arsia Mons Elongated Cloud Return of the extremely elongated cloud ... on Mars A mysteriously long, thin cloud has again appeared over the 20-km high Arsia Mons volcano on Mars. Since September 13 2018, an impressive elongated cloud was spotted by VMC around the Arsia Mons volcano, this curious cloud atracted the attention of thousands of people who were curious about this singular event in Mars. A recurrent feature, the cloud is made up of water and ice and can stretch for over 1,100 miles (1,800 km). Credit: ESA/GCP/UPV/EHU Bilbao A mysteriously long, thin cloud has again appeared over the 20-km-high Arsia Mons volcano on Mars. Nous … August 2, 2020 August 2, 2020. The Arsia Mons Elongated Cloud, or AMEC, as it’s called, can reach about 1,110 miles (1,800 km) in length. Scientists on the project recently named the planet's most prominent cloud the Arsia Mons Elongated Cloud, or AMEC. However, we don’t know yet if the clouds are always quite this impressive”. On the leeward slope, water ice condenses, forming a cloud which can extend westward for more than 1000 km. Arsia Mons est un volcan bouclier situé sur la planète Mars par 8,4° S et 238,9° E [archive] dans le quadrangle de Phoenicis Lacus. A vos côtés, nous accompagnerons vos ambitions de transformation et votre volonté de franchir avec succès les ruptures technologiques, organisationnelles et humaines portées par le numérique. A mysteriously long, thin cloud has again appeared over the 20-km (~12 miles / 65,000 feet) high Arsia Mons volcano on Mars.. A recurrent feature, the cloud is made up of water ice, but despite appearances, it is not a plume linked to volcanic activity.Instead, the curious stream forms as airflow is influenced by the volcano’s ‘leeward’ slope − the side that does not face the wind. La pression atmosphérique a été mesurée … That means we can catch it! Meet the Arsia Mons Elongated Cloud, or AMEC. The Visual Monitoring Camera (VMC) attached to Mars Express captured a mysteriously long, thin cloud over the 20 km (12 miles) high Arsia Mons volcano on July 17 and 19, 2020. Dynamics of the extremely elongated cloud on Mars Arsia Mons volcano (EGU 2020) On September 13 ESA's Mars Express orbiter spotted an elongated cloud on Mars near the Arsia Mons. A Nuvem Alongada de Arsia Mons (AMEC, na sigla em inglês) é uma nuvem orográfica detectada acima do vulcão dormente Arsia Mons de 20 quilômetros de altitude, em Marte. | The Mars Express orbiter, which has been studying Mars for the past 16 years, captured these images of a strange, very elongated cloud on Mars on July 17 and 19, 2020. Click to learn more and donate. Click here for an annotated version of this image, which is … It’s made up of water ice, and while it may look like a smoke plume linked to volcanic activity, its airflow is directly influenced by the volcano’s ‘leeward’ slope, or the non wind-facing side. For the past couple of years, the Mars Express orbiter of the European Space Agency (ESA) has been keeping an eye on a mysteriously long, thin cloud that periodically shows up over Arsia Mons, the 12-mile-high (20-km-high) volcano on Mars. The massive extinct volcano that is home to the cloud is Arsia Mons, a 20 km high (12.4 miles) landmark on … Arsia Mons is about 30 times the size of the largest volcanoes that are scattered across Earth, and similar clouds like the one spotted in September have been observed in 2009, 2012 and 2015. Most spacecraft in orbit around Mars tend to observe in the Martian afternoon. In a July 29 statement, ESA said the cloud has appeared again, illustrated by the images above, acquired by the Visual Monitoring Camera (VMC) on Mars Express on July 17 and 19, 2020. It is formed when local winds interact with the topography in a certain way and not because of the volcano it forms over. Its long bright trail has become a familiar feature over the peak known as Arsia Mons, to the southeast of the more famous Olympus Mons. These images of the cloud, which can reach up to 1800-km in length, were taken on 17 and 19 July by the Visual Monitoring Camera (VMC) on Mars Express, which has been studying the Red Planet from orbit for the past 16 years. | The Mars Express orbiter, which has been studying Mars … These images of the cloud, which can reach up to 1800-km in length, were taken on 17 and 19 July by the Visual Monitoring Camera (VMC) on Mars Express, which has been studying the Red Planet from orbit for the past 16 years. The cloud has been officially named the Arsia Mons Elongated Cloud or AMEC. The elongated cloud hovering near Arsia Mons this year was also observed with the visible and near-infrared mapping spectrometer, OMEGA, and the High Resolution Stereo Camera (HRSC) on Mars Express, providing scientists with a variety of different data to study this phenomenon. The southern solstice is the period of the year when the Sun is in the southernmost position in the martian skies, just like 21 December on Earth. You have already liked this page, you can only like it once! The cloud stretches for about 930 miles (1500 kilometers) and hasn't dissolved for over a month. A recurrent feature, the cloud is made up of water ice, but despite appearances it is not a plume linked to volcanic activity. We study the daily cycle of this cloud, showing how the morphology and other parameters of the cloud evolved with local time. Scientists have spotted the mysterious elongated plume above Mars’ Arsia Mons volcano reappear and say it is not created by volcanic activity on Mars. Why does it only form in the early morning? Today, as Lead Editor at EarthSky.org, she helps present the science and nature stories and photos you enjoy. A repeated weather phenomenon occurs each year near the start of southern winter over Arsia Mons. A mysteriously long, thin cloud has again appeared over the 20-km high Arsia Mons volcano on Mars. elongated cloud rising from the Arsia Mons volcano was spotted du ring at least 80 sols by the VMC camera onboard Mars Express [1] . Though Mars' atmosphere is much thinner than … A curious elongated cloud, extending west of the Arsia Mons volcano on Mars, seen in a Mars Express image taken October 10, 2018. As per ESA, the tail-like cloud made of water ice can be as long as 1,800 km. Stay tuned as scientists continue to investigate, and we reveal more mysteries from Mars. A recurrent feature, the cloud is made up of water ice, but despite appearances it is not a plume linked to volcanic activity. You can find more pictures of AMEC, as well as other ‘alien’ features of the Red Planet, on the VMC Flickr page. Its long bright trail has become a familiar feature over the peak known as Arsia Mons, to the southeast of … ENGAGEMENT. Click here for an annotated version of this image. A mysteriously long, thin cloud has again appeared over the Arsia Mons volcano on Mars. Eleanor Imster has helped write and edit EarthSky since 1995. A mysteriously long, thin cloud has again appeared over the 20-km high Arsia Mons volcano on Mars. So, how long has it been disappearing and reappearing? And the Arsia Mons Elongated Cloud doesn't just come, stick around for a while, then dissipate. The cloud has a tail-like structure, consists of water and ice and can gain over 1,800 kilometers (1118 miles) in length. Picture: ESA. Instead, the curious stream forms as airflow is influenced by the volcano’s ‘leeward’ slope − the side that does not face the wind. The elongated cloud formation can reach 1,800 kilometers (1,120 miles) in length, and hovers above the 20-kilometer-high (12.4-mile) Arsia Mons volcano, close to the planet's equator. The Mars Express science team have now named the cloud the Arsia Mons Elongated Cloud, AMEC. What is the Arsia Mons Elongated Cloud? Since 13 September, ESA’s Mars Express has been observing the evolution of an elongated cloud formation hovering in the vicinity of the 20 km-high Arsia Mons … In the images, the cloud appears as a white plume hovering over the Arsia Mons volcano on Mars, near the Martian equator, which stretches over 20 kilometers high. Your most recent photos of Jupiter and Saturn. Named the Arsia Mons Elongated Cloud (AMEC), the cloud can reach up to 1,800 km (1,118 miles) in length. These images of the cloud, which can reach up to 1800-km in length, were taken on 17 and 19 July by the Visual Monitoring Camera (VMC) on Mars Express, which has been studying the Red Planet from orbit for the past 16 years. The elongated cloud formation can reach 1,800 kilometers (1,120 miles) in length, and hovers above the 20-kilometer-high (12.4-mile) Arsia Mons volcano, close to the planet's equator. She also serves as one of the voices of EarthSky on social media platforms including Facebook, Twitter and G+. A mysterious elongated cloud that stretches some 1,100 miles over Mars has returned - it was last seen in 2018. The scientists have named it the cloud as Arsia Mons Elongated Cloud (AMEC). It forms each morning, then disappears the same day, only to reappear the next morning. A Martian year consists of 668 sols – approximately 687 days – so the seasons last for twice as long. Extremely elongated cloud returns over Arsia Mons volcano, Mars. A martian day, or sol, is slightly longer than an Earth day at 24 hours, 39 minutes and 35 seconds long. The elongated "water ice cloud" seen lingering over Arsia Mons on Sept. 13, 2018. Izduženi oblak uz Arsia Mons) je ponavljani vremenski fenomen koji se formira svake marsovske godine oko južnog solsticija nad Arsia Monsom, a ponavlja se 80 dana ili čak i više, nakon brzog dnevnog ciklusa. “The extent of this huge cloud can't be seen if your camera only has a narrow field of view, or if you're only observing in the afternoon,” says Eleni Ravanis, a Young Graduate Trainee for the Mars Express mission who works specifically for the VMC instrument. The Visual Monitoring Camera (VMC) attached to Mars Express captured a mysteriously long, thin cloud over the 20 km (12 miles) high Arsia Mons volcano on July 17 and 19, 2020. A position to gather and provide crucial information on this unique effect, slim cloud has a tail-like structure consists... 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