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 have

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, coal,

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

Smoke goes around the world

Wildfire smoke is a combination of gases and aerosols - tiny solid and liquid particles suspended in air - and can have an effect on cloud formation, atmospheric cooling and heating, and human health, NASA's Earth Observatory explains. The animated series of images

July 22, 2015

After Europe and Canada, noctilucent clouds expand to USA

The 2015 northern hemisphere noctilucent clouds season started on May 19, 2015 when NASA's AIM spacecraft spotted a patch of electric blue clouds over the Artactic Circle.Since then, noctilucent clouds (NLCs) have been moving south and, on June 8 - 9, they reached t

June 12, 2015

Sprite season begins in northern hemisphere

Sprite season - spectacular, eerie flashes of colored lights that appear high above the tops of powerful thunderstorms - is underway, SpaceWeather reports. Because sprites are associated with thunderstorms, they tend to occur in late spring and summer."Sprites are

May 16, 2015

NIWA studies spectacular seabed methane gas flares off the coast of Gisborne, New Zealand

A team of scientists aboard NIWA’s deepwater research vessel Tangaroa returned to Wellington on May 1, 2015 with new knowledge about methane ‘leaking’ into the atmosphere.The 11-strong science team led by marine geologist Dr Joshu Mountjoy has been

May 04, 2015

Tracking the SO2 emission from Calbuco eruption

Ash and pumice particles were lofted high into the atmosphere after an explosive eruption of Chile's Calbuco volcano on April 22, 2015 and the debris has been darkening skies and burying parts of Chile, Argentina, and South America for nearly a week. Along with 210

April 29, 2015

Strange behavior of Antarctic noctilucent clouds

The southern noctilucent clouds (NLCs) season is over now, but looking back over the entire season reveals something unexpected.In an 8-year plot of the Antarctic noctilucent cloud frequencies, the 2014/15 season is clearly different from the rest, SpaceWeather reports.

March 02, 2015

Satellite tracks Saharan dust to Amazon in 3D

For the first time, a NASA satellite has quantified in three dimensions how much dust makes the trans-Atlantic journey from the Sahara Desert to the Amazon rainforest. Among this dust is phosphorus, an essential nutrient that acts like a fertilizer, which the Amazon dep

February 24, 2015

Possible outbreak of polar stratospheric clouds underway around the Arctic Circle

A possible outbreak of polar stratospheric clouds (PSCs) is underway around the Arctic Circle, reports.Ivar Marthinusen sends this picture of the phenomenon taken on December 22, 2014 from Skedsmokorset, Norway:"Right after sunset, these clouds wer

December 23, 2014

A barrage of small impacts likely erased much of the Earth’s primordial atmosphere

Today’s atmosphere likely bears little trace of its primordial self: Geochemical evidence suggests that Earth’s atmosphere may have been completely obliterated at least twice since its formation more than 4 billion years ago. However, it’s unclear what

December 02, 2014

How carbon pollution spread across the Earth

New video released by scientists at NASA Goddard's Global Modeling and Assimilation Office reveals how the greenhouse gas carbon dioxide in the atmosphere travels around the globe in a single year. The results focus on a period between May 2005 and June 2007. At the

November 26, 2014

Agricultural practices play a big role in seasonal swings of carbon dioxide in the atmosphere

New study from Boston University, the University of Michigan and other institutions identifies a new, direct fingerprint of human activity on Earth as agricultural crops play a big role in seasonal swings of carbon dioxide in the atmosphere.Modern agricultural

November 25, 2014

How do active volcanoes change clouds?

NASA Goddard Space Flight Center scientist Andrew Sayer talks about how emissions from volcanoes can affect clouds. This video provides an overview of research published in the Journal of Atmospheric Chemistry and Physics. Research: Systematic satellite observations of

November 14, 2014

Rare fallstreak hole cloud observed over Melbourne, Australia

A rare fallstreak hole cloud was observed today over Melbourne, Australia, Meteo Europe team reports. Because of their rarity and unusual appearance, as well as very little exposure in media, fallstreak holes are often mistaken for or attributed to unidentified flying o

November 03, 2014

2014 ozone hole update

According to scientists from NASA and NOAA, the Antarctic ozone hole reached its annual peak on September 11 with the size of 24.1 million square kilometers (93 million square miles). Overall, the 2014 ozone hole is smaller than the large holes of the 1998–2006 pe

October 31, 2014

New approach to estimate 15 years of CO2 emissions from burning fossil fuels

A new system, called the “Fossil Fuel Data Assimilation System,” (FFDAS) has been used to quantify 15 years of CO2 emissions, every hour, for the entire planet – down to the city scale.An international research team led by ASU scientists has developed

September 19, 2014

World Ozone Day 2014

September 16, 2014 - The World Ozone Day, is meant to commemorate the success that has been achieved in ameliorating ozone depletion since the enactment of the Montreal Protocol, but also to bring attention to the work ahead. In their first review in four years on

September 16, 2014

Increased SO2 emissions from Holuhraun eruption site can pose health risk and affect global climate change

Earth has split open between the Bardarbunga and Askja volcanoes in Iceland and spewed lava and hot gas. According to the University of Iceland, as of September 9, 2014, the new lava flow was 16 kilometers (10 miles) long and covered about 20 square kilometers (8

September 12, 2014

Unexpectedly large amount of ozone-depleting compound present in Earth's atmosphere

New NASA research shows that Earth's atmosphere contains an unexpectedly large amount of an ozone-depleting compound - Carbon tetrachloride (CCl4) -  from an unknown source decades after the compound was banned worldwide.Carbon tetrachloride was regulated

August 22, 2014

NRL reveals new meteorological insight into mid-level clouds

Research meteorologists at the U.S. Naval Research Laboratory (NRL) Marine Meteorology Division (MMD) and Scripps Institution of Oceanography, employing the Navy's Mid-Course Doppler Radar (MCR) at Cape Canaveral, were able to characterize mid-level, mixed-phase alt

July 22, 2014

Another outbreak of noctilucent clouds over Europe

The weekend of July 12 - 13 brought another outbreak of noctilucent clouds (NLCs) to Europe, SpaceWeather reports. Across the northern reaches of the continent, skies were criss-crossed by signature ripples of electric blue, like these photographed by Jaan Jalgrata

July 14, 2014

Saharan dust on the move across Atlantic Ocean

Disturbances such as large thunderstorm complexes or simply strong trade winds over North Africa periodically result in vast dust and sand storms, some of which extend as high as 6 000 meters. These can be driven out to sea within the Saharan Air Layer

July 05, 2014

Noctilucent clouds outburst reported

Sky watchers in Europe are reporting an outburst of bright noctilucent clouds (NLCs). The display began at sunset on July 3rd, filling northern horizons with electric-blue ripples, swirls, and tendrils of light.Morten Ross sent this picture to from

July 04, 2014

Noctilucent clouds sighted in Germany

For the second time in just a few days, noctilucent clouds (also known as NLCs) have been sighted in Germany, SpaceWeather reports. Although their northern season is just getting underway, researchers aren't sure why these early NLCs seem to favo

June 03, 2014

Massive thunderstorm backed by dry dusty winds hit Indian capital

At least nine people were killed in and around New Delhi, India, when a massive thunderstorm brought down trees and cut off power on May 30, 2014. Most of the deaths were caused by the falling trees or collapsing walls.A massive thunderstorm backed by dry 

May 30, 2014

Massive sandstorm hit northern China

Massive sandstorm in northwest China is transporting large sand deposits from Taklimakan Desert in western China and the Gobi desert in the east, through Gansu Province and the Xinjiang Uygur autonomous region. A very large front is moving eastward

April 25, 2014

Unexpected teleconnections in noctilucent clouds

NASA's AIM spacecraft is discovering unexpected "teleconnections" in Earth's atmosphere that link weather and climate across vast distances.Teleconnection in atmospheric science refers to climate anomalies being related to each other at large d

April 11, 2014

Newly detected ozone depleting substances in the atmosphere

Four gases contributing to the destruction of the ozone layer were identified in the atmosphere. All four of them have been released into the atmosphere recently. Scientists at the University of East Anglia made the discovery by

March 14, 2014

Dangerous air pollution hit Iceland's capital

Reykjavík and other parts of Iceland recorded 40 times the upper safe limit of pollution levels on February 19/20, 2014. The pollution levels haven't been so high since the last volcanic eruptions in 2010-2011. However, this time it is not ash that

February 21, 2014

Noctilucent clouds season has begun in southern hemisphere

The season of noctilucent, "night-shining", clouds has begun in the southern hemisphere and NASA's AIM spacecraft is monitoring a vast bank of rippling electric-blue NLCs blanketing almost all of Antarctica. Noctilucent clouds

December 12, 2013

Arthur Few explains lightning activity at Chaiten volcano, Chile

In May 2008 the Chilean volcano Chaiten erupted spectacularly and exhibited remarkable lightning activity. Photographer Carlos Gutierrez captured a few images showing unusual kelly-green lightning channels. In this briefing, lightning researcher Arthur Few explains the

December 12, 2013

Air pollution in northeastern China reached hazardous levels

A cold front has sent temperatures plummeting in most northeastern Chinese provinces, causing fog and haze to linger across the region. Agricultural fires in the region in the fall,  following the harvest, also influenced levels of smog. Since

October 24, 2013