On 23rd March 2017 - World Meteorological Day - the World Meteorological Organization (WMO) released its new, online, digitised International Cloud Atlas, which is the global reference for observing and identifying clouds. It contains a number of new cloud classifications, including the eagerly-awaited asperitas, a dramatic undulated cloud which has captured public imagination.
The WMO have today released their State of Global Climate in 2016 report, detailing a record global temperature, exceptionally low sea ice, continued sea level rise and increasing ocean temperatures, with extreme weather and climate continuing into 2017.
The authoritative annual statement is based on several international datasets maintained independently by global climate analysis centres, as well as research institutes and national meteorological and hydrological centres.
To celebrate World Meteorological Day (#WorldMetDay) on 23rd March, the Royal Meteorological Society (RMetS) are running a competition with @StormHour. The theme of this year's World Meteorological Day is 'Understanding Clouds', so we are running a mini cloud competition.