• 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…

  • 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,…

  • 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…

  • 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…

  • 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,…

  • 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

  • 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

  • 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

  • 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…