Atmosphere

Massive dust storm sweeps through Kathmandu, Nepal

A massive dust storm engulfed Kathmandu, Nepal for 45 minutes on March 28, 2016, injuring, at least, a half a dozen people and causing traffic chaos. For the past one week, Kathmandu and many other parts of the country have been shrouded in a blanket of haze, with...

March 28, 2016

"Light pillars' observed over south Wales, UK

A very rare atmospheric optical phenomenon called 'light pillars' was observed in the night sky above south Wales about 21:50 UTC on Friday, March 11, 2016, the same day a CME impact sparked surprising G2 - Moderate geomagnetic storm with auroras seen as far...

March 14, 2016

Sudden stratospheric warming to bring a snap of cold weather over UK

Meteorologists from the UK Met Office have predicted a sudden stratospheric warming (SSW) will occur in early March 2016. The phenomena could affect the surface weather, increasing the risk of prolonged wintry conditions over parts of northern Europe and the UK. The...

March 01, 2016

Strong ozone depletion expected over Arctic in the coming weeks

POLSTRAC campaign initiated by the Karlsruhe Institute of Technology (KIT) was actively engaged in measurements in Arctic since the end of 2015. The research team has observed vertically extended polar stratospheric clouds, in unusually low regions of the...

February 18, 2016

Ozone hole behind colorful nacreous clouds over the UK and Ireland

Polar stratospheric clouds (PSCs) are appearing over the United Kingdom and Ireland since January 31, 2016. An extremely rare occurrence for this area, usually restricted to the Arctic Circle, has been photographed by numerous skywatchers. According to experts, the...

February 05, 2016

New class of atmospheric waves, producing strong temperature ripples, discovered over Antarctica

Researchers from the University of Colorado Boulder discovered a new class of mesospheric waves by observing the high parts of the atmosphere over Antarctica. These waves seem to send constant ripples through the Earth's atmosphere and probably affect high-level...

January 20, 2016

Beijing issues a red alert for hazardous smog pollution for the second time ever

Residents of China are experiencing another wave of severe smog pollution since December 18, 2015. The smog conditions have prompted Beijing authorities to issued its second red alert in the history, as hazardous conditions have been expected to last more than three...

December 21, 2015

Nacreous clouds appear around the Arctic Circle

Sky watchers are observing an outbreak of polar stratospheric clouds or PSCs around the Arctic Circle, SpaceWeather reports. Unlike normal grey-white clouds, which hug Earth's surface at altitudes of only 5 to 10 km (3.1 - 6.2 miles), PSCs float through the...

December 17, 2015

Low to moderate air pollution levels expected as Saharan dust sweeps UK

The southerly air flow from Sahara, Africa brought a thin band of dust over parts of UK on December 16, 2015, Met Office reports. Numerous monitoring stations have detected the dust just above the surface since. The conditions are expected to last only a couple of...

December 17, 2015

Volcanoes cool the planet by releasing low-level sulfur to influence cloud formation

A new study, conducted by the University of Washington (UW) researchers used a huge volcanic eruption in Iceland, from the period between summer 2014 and early winter 2015, to explore how the sulfur emissions affects cloud's brightness. The results suggest the...

December 10, 2015

Red alert for smog pollution issued in Beijing, China

A red alert for smog pollution was issued for in Beijing, China on December 8, 2015. The warning was put in effect in order to "protect public health and reduce levels of heavy air pollution", according to the Beijing Municipal Environmental Protection...

December 08, 2015

The 2015 ozone hole over Antarctic larger than usual and late

The annual Antarctic ozone hole was larger than usual this year and formed later than in recent years, according to the scientists from NASA and the National Oceanic and Atmospheric Administration (NOAA). The ozone hole reached its maximum on October 2, 2015,...

October 31, 2015

Large dust storm clouds Phoenix, Arizona

A large dust storm swept the US Arizona's capital of Phoenix on October 16, 2015, media reports. The cloud system was hovering about 1 500 m (4 921 feet) above the ground, packing winds of 100 km/h (62 mph) and was followed by a strong thunderstorm. Video...

October 18, 2015

A sharp decline in concentration of ozone destroying HCFC-133a gas reported

A new study lead by Martin Vollmer of the Swiss Federal Laboratories for Materials Science and Technology has found that after a rapid increase in anthropogenic compound named HCFC-133a (CF3CH2Cl), an ozone destroying gas, the atmospheric abundance and emissions...

October 06, 2015

Manmade aerosols significantly affecting South Asian summer monsoon winds

A new study conducted by a team of scientists from the Massachusetts Institute of Technology (MIT) shows the South Asian summer monsoon wind complex has changed considerably, due to the presence of manmade aerosols in atmosphere. A widespread burning of firewood,...

October 02, 2015

How effective is rain in cleaning the atmosphere

Atmospheric chemists at MIT claims to have obtained the most accurate estimates of rates of coagulation between rain droplets and aerosol particles that in turn could be used to determine the extent to which natural rain may contribute to keeping the atmosphere

August 30, 2015

Solar halo optical phenomena observed in Sweden

The halos are caused by light refraction and reflection of millions of tiny ice crystals in high cirrus clouds. These high, thin clouds appear about 6 km (20 000 feet) or more above the ground, and are usually accompanied by a storm shortly after..Ice crystals in cirrus

July 30, 2015