Atmosphere

aurora jan 18 2021

Sensors detect rare 'musical note' from magnetosphere over Norway

A rhythmic pattern sounding like a low-frequency musical note was detected from the magnetosphere over Lofoten, Norway, on Monday, January 18, 2021. The rare event, which is also called a pulsation continuous, is a strictly regional phenomenon, according to...

January 20, 2021

noctilucent clouds argentina january 3 2021 f

Noctilucent clouds (NLCs) return to the South Pole, make a very rare appearance over Argentina

Noctilucent clouds (NLCs) have returned to the South Pole and made a very rare appearance over Argentina more than one month after the beginning of the southern hemisphere season. Gerd Baumgarten of Germany's Leibniz-Institute of Atmospheric Physics, whose...

January 08, 2021

10hpa merra2 jan 5 2021

Sudden Stratospheric Warming (SSW) event started over the weekend

A Sudden Stratospheric Warming event started over the weekend in association with a significant weakening or reversal of westerly winds circulating around the North Pole -- between 10 and 50 km (6 - 31 miles) above the ground -- the stratospheric polar vortex. ...

January 06, 2021

NLCs are missing dec 29 2020

Noctilucent clouds (NLCs) frequencies over the South Pole close to zero this year

Noctilucent clouds (NLCs) over the South Pole remain missing as of December 29, 2020-- an unusual occurrence as the clouds are expected to appear in the middle of the month. The southern stratosphere seems to think it's winter. In early December, Dr. Tony...

December 30, 2020

10 hpa temp jan 1 2021

Major Sudden Stratospheric Warming (SSW) event expected as we enter 2021

A major Sudden Stratospheric Warming (SSW) event is predicted to occur as we start the new year. If the models are correct, we can expect prolonged extremely cold temperatures to affect parts of the northern hemisphere by mid-January. SSW refers to a rapid rise in...

December 23, 2020

NLCs southern hemisphere november 30 2020 f

Noctilucent clouds (NLCs) over the South Pole are missing this year

Noctilucent clouds (NLCs) over the South Pole are missing this year, but consider it only the tip of the iceberg, Dr. Tony Phillips of the SpaceWeather said. Missing NLCs is just one of the curious weather patterns currently underway at the southern end of our...

December 03, 2020

STEVE nov 26 2020 5

Citizen scientists discover new, mysterious feature of aurora-like phenomenon STEVE

Citizen scientists have discovered that the aurora-like phenomenon called STEVE or Strong Thermal Emission Velocity Enhancement has a new feature-- small, green fence-like lights streaking through the atmosphere at 1 600 km/h (1 000 mph). STEVE is also a discovery...

November 26, 2020

ozone hole 2020 2

2020 Antarctic ozone hole one of the largest and deepest in recent years

The 2020 ozone hole over the Antarctic is one of the largest and deepest in recent years, according to scientists with the Copernicus Climate Change Service (C3S). The hole had grown to 23 million square km (8.8 million square miles)-- over twice the size of the...

October 07, 2020

lidar shooting into antarctic night sky aug 20 2020 2

New equatorial wind patterns observed in Antarctica, revealing new connections in global circulation

A team of researchers found evidence of a new equatorial wind pattern at Antarctica, unveiling a crucial connection between winds at the Earth's equator and atmospheric waves about 10 000 km (6 000 miles) away at the South Pole. The findings highlight how winds...

August 29, 2020

martian nightglow aug 26 2020 4

Mysterious, spiral-shaped ultraviolet light pulses over Mars

New images from NASA's MAVEN spacecraft reveal wide areas of Mars' night sky pulsing in ultraviolet light. While researchers understand the light's source, its mysterious spiral shape left them puzzled. "There is a vast spiral of ultraviolet light...

August 26, 2020

dark red noctilucent clouds sweden 2020 pm heden earth to sky calculus

Rare dark red noctilucent clouds appear over Sweden

Rare dark red noctilucent clouds appeared over Vallentuna, Sweden on July 25, 2020, and were recorded by P-M Heden. This type of NLCs is rare and not fully understood, Dr. Tony Phillips of the SpaceWeather.com reports. Research in the 1970s revealed that much of the...

July 28, 2020

noctilucent clouds july 5 2020 budapest hungary by viktor veres f

Major noctilucent clouds outbreak over Europe

Observers across Europe, from Scandinavia to the Adriatic coast, are reporting major noctilucent clouds (NLC) outbreak on July 5 and 6, 2020. The outbreak comes on the heels of July 4th sighting over southern California, U.S. -- where in 2019 a record was set for...

July 06, 2020

nasa icon june 25 2020 3

NASA's ICON mission releases first batch of data on Earth's ionosphere

NASA's ICON mission team has released its first batch of observations of the ins and outs of the Earth's ionosphere--the dynamic region high in the planet's atmosphere where terrestrial weather meets space weather. The satellite is designed to study...

June 28, 2020

brazil lightning 2018

'Extraordinary' lightning megaflashes in Brazil and Argentina set new distance and duration records

A 16-second flash of lightning in Argentina on March 4, 2019, and a 700 km (435 miles) bolt in Brazil on October 31, 2018, set new records for the greatest lightning duration and longest bolt ever, respectively, according to the World Meteorological Organization...

June 26, 2020

nlcs june 23 2020 ft img

Rare noctilucent clouds appear during summer solstice over London, England

Rare noctilucent clouds (NLCs) put on a spectacular display over London, England, on June 21, 2020-- during the summer solstice. "Even the bright lights of the London Eye on the River Thames couldn’t drown out the display," said Phil Halper, a...

June 24, 2020

saharan dust sentinel 5 june 23 2020 f

The largest Saharan dust cloud in 50 years engulfs the Caribbean, air quality at record hazardous levels

Massive Saharan dust cloud is engulfing the Caribbean as it heads toward the U.S., with air quality across much of the region falling to record hazardous levels. The phenomenon is described to be the most significant in 50 years, according to environmental health...

June 24, 2020

saharan dust june 21 2020

'Abnormally large' plume of Saharan dust makes it to the Caribbean, to reach South U.S. this week

A massive dust cloud from the Sahara continues its westward progression and has moved over the Lesser Antilles, the eastern Caribbean Sea, and Puerto Rico as of June 21, 2020. The dust plume, which is described by scientists as an abnormally large cloud, is forecast...

June 22, 2020