Atmosphere

nlc season 2020 first cloud spotted may 17 2020 f

Early start of the 2020 noctilucent cloud (NLC) season

The Northern Hemisphere noctilucent cloud (NLC) season has officially begun. The first cloud was detected by NASA's AIM spacecraft inside the Arctic Circle on May 17. The detection marks one of the earliest starts in the 14-year history of the spacecraft. ...

May 23, 2020

airglow west texas may 13 2020

Red sprites and airglow over West Texas

A large column of red sprites and airglow put on a fantastic display over West Texas on May 13, 2020. The phenomenon was captured by Stephen Hummel of the McDonald Observatory. A line of storms more than 161 km (100 miles) away generated the astonishing display in...

May 18, 2020

may 14 2020 dustload bdfc

Strong advection of Saharan dust from North Africa into Europe

A huge load of Saharan dust is moving across the Mediterranean Sea into SE Europe on May 14, 2020, with additional deposits expected in the coming days. According to Severe Weather Europe (SWE) meteorologists, the dust may also reach the UK and Ireland over the...

May 14, 2020

delhi dust storm may 10 2020

Massive dust storm barrels through Delhi, India

Sunny morning skies went dark by noon as massive dust storm enveloped Delhi, India, in a sudden change of weather on Sunday, May 10, 2020. The storm came after the city recorded the season's second hottest temperature -- 40.9 °C (105.6 °F). "This...

May 11, 2020

nlc night lights films adrien mauduit f

2020 northern hemisphere NLC season forecast

Public interest for noctilucent clouds rose sharply in 2019 after record-setting outbreak across the northern hemisphere. The 2020 season is expected to start mid- to late-May or early June, but at the moment, it doesn't seem like 2020 will be a repeat of 2019....

May 11, 2020

2011 earthquake tsunami japan may 5 2020

Understanding how natural hazards impact our upper atmosphere and cause variations in the space environment

A new study shows that natural hazards on Earth, specifically earthquakes and tsunamis, can create much more disturbances in the ionosphere than previously assumed. The researchers studied the catastrophic 2011 M9.0 Tohoku earthquake and tsunami in Japan, and found...

May 06, 2020

arctic ozone april 17 2020 3

Arctic ozone levels hit record low in March

An analysis of satellite observations shows that ozone levels over the Arctic hit a record low for the month of March, NASA researchers reported on April 16, 2020. Ozone levels reached their lowest point on March 12 at 205 Dobson units. The depletion was caused by...

April 17, 2020

ozone hole april 3 2020

Rare ozone hole opens over the Arctic, likely the largest in history

A huge ozone hole has opened this year over the Arctic. While ozone holes normally form in the Antarctic zone every year because winter temperatures drop to extremely low values, allowing high-altitude clouds to develop-- the Arctic has more varying temperatures and...

April 03, 2020

ozone hole march 18 2020 ft img

Rare, unusually large ozone hole develops over the Arctic-Canadian region

A huge area of sustained ozone depletion has developed over the Arctic-Canadian region -- too late for the winter season, too early for spring, and unusually strong for the northern hemisphere. The ozone layer is a natural layer of protective gas in the upper...

March 18, 2020

canary islands sandstorm feb 24 2020 img by Sentinel 2

Massive sandstorm hits Canary Islands, authorities describe it as the worst in 40 years

A massive sandstorm with winds up to 120 km/h (75 mph) hit the Canary Islands over the weekend and continued into Monday, February 24, 2020. The storm caused severe disruptions and exacerbated wildfires which forced about 2 000 residents to evacuate. The regional...

February 24, 2020

norway low pressure feb 10 2020

Extremely low air pressure brings down air traffic over northern Norway

Air pressure over northern Norway dropped below 940 hPa on February 10, 2020, as Storm Ciara impacted much of northern Europe, leading to the cancelation of air traffic over the region for the first time ever due to low pressure. It also resulted in high water...

February 12, 2020

london heathrow airport records highest air pressurejan 20 2020

London records highest atmospheric pressure in more than 300 years, UK

With 1 049.6 hPa registered at Heathrow Airport Sunday into Monday, January 19 to 20, 2020, London has set its new atmospheric pressure record -- the highest since records began in 1692. The barometer reached 1 049.6 hPa overnight, breaking the previous record of 1...

January 22, 2020

polar stratospheric clouds december 2019 f

Intense outbreak of polar stratospheric clouds (PSCs) around the Arctic Circle

A spectacular outbreak of rare polar stratospheric clouds (PDCs) was reported around the Arctic Circle, starting December 30, 2019. The display lasted nearly an hour and was commonly regarded as the brightest display that any of the locals have ever seen. The...

January 02, 2020

sydney smoke dec 10 2019

Sydney chokes in smoke as Australia bushfires intensify, current period of poor air quality the 'longest' and 'most widespread' in the state's history

The air quality in Sydney, Australia continued to worsen on Tuesday, December 10, 2019, as roughly 100 bushfires burned in New South Wales (NSW) and strong north winds brought further smoke into the city. The haze was so thick in some areas that it was 11 times more...

December 11, 2019

noctilucent sky dec 1 2019

Planetary wave supercharging noctilucent clouds over Antarctica

An atmospheric wave about half as wide as the Earth is supercharging noctilucent clouds (NLCs) in the southern hemisphere, with NASA's Aeronomy of Ice in the Mesosphere (AIM) spacecraft detecting the phenomenon in this series of south polar images from November...

December 05, 2019

denver snow nov 28 2019

Denver sees snowiest Thanksgiving since 1979, dense fog on Black Friday, Colorado

Denver residents woke up to 203 mm (8 inches) of snow on Thanksgiving morning, November 28, 2019, making it the most snow on the ground on the holiday since 1979, according to official statistics at Denver International Airport. Meanwhile, fog covered the city on...

November 29, 2019

gfs 10mb t c dec 8 2019 f

Potential major stratospheric warming event

Forecast models suggest a major stratospheric warming event might develop in December 2019, possibly initiating a collapse sequence of the polar vortex. Main cooling effects are expected across Eurasia and the United States. "This might have important...

November 22, 2019