• After 30 years, new cloud types added to Cloud Atlas

    Celebrating the World Meteorological Day on March 23, the World Meteorological Organization (WMO) has released its new, long-awaited, digitized International Cloud Atlas. The atlas is global reference for observing and identifying clouds, which are an essential part…

  • Polar Stratospheric Clouds form over Sweden

    Polar stratospheric clouds, reported on December 9, 2016, over the skies of Kiruna, Sweden, indicate the stratosphere above the Arctic Circle is getting very cold. Polar stratospheric clouds (PSCs) form from the icy particles in the lower stratosphere, in extremely…

  • Record early start of southern hemisphere NLC season

    The southern hemisphere noctilucent clouds (NLC) season has started early this year and tied with 2013 for the earliest southern hemisphere season on record. The 2016/17 southern hemisphere noctilucent clouds season started on November 17 and tied with 2013 for the…

  • 40 tons of cosmic dust enters Earth’s atmosphere every day

    New experiments, carried by the EU scientists, managed to estimate how much cosmic dust enters Earth's atmosphere for the first time. The dust particles impact our atmosphere causing a wide range of phenomena, and further research hopes to address them. Dust…

  • Noctilucent clouds storm from July 12 – 14 over Denmark

    You are not dreaming, you can see waves, shock fronts or waterfalls in the night sky! On the nights of the 12-13th and 13-14th of July 2016, Denmark has witnessed two very powerful and bright noctilucent cloud shows in a row. The brightest and broadest I can…

  • Noctilucent clouds in motion

    On the night of June 21, 2016, photographer Derek Mellott from the town of Gibbons, Alberta, Canada recorded this fantastic display of noctilucent clouds (NLCs). "They were the brightest I have ever seen," he said. "It seemed like a good time to…

  • Expansion of tropics shifting high altitude clouds toward poles

    NASA's research team conducted a study on 30-years of satellite data to reveal that a recorded trend of high altitude clouds in the mid-latitude which are shifting toward the poles is primarily caused by the expansion of the tropics. One of the most important…

  • 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…