The sun reports today on an ‘upside-down’ rainbow that was seen in Derbyshire. What was actually observed is known as circumzenithal arc. In order for conditions to be right for a circumzenithal arc to form, small, flat, six-sided ice crystals must be suspended high in the sky to create a field of tiny prisms. The sun’s rays enter the ice crystals and is refracted, projecting an arc in the sky which, if complete, would circle the zenith. Completely circular circumzenithal arcs are rare, however; most of them only take up a section of the sky.
Bob Ward, Policy and Communications Director at the Grantham Research Institute on Climate Change and the Environment at the London School of Economics and Political Science writes in the Guardian today about how climate sceptics mislead the public over hacked emails inquiry.
It’s another weekend full of events as well with the V-Festival taking place at Hylands Park and at Weston Park. You can get forecasts for both locations through the weekend, along with information for the Edinburgh Festival from our events calendar at http://www.metoffice.gov.uk/public/pws/events/
Reuters reports on how airline experts are to assess volcano risks in Iceland in a meeting to take place in September. The meeting taking place in Keflavik will include support from the Met Office as the Volcanic Ash advisory Centre with responsibility for Icelandic Volcanoes.