The sun over Greenland has risen two days early, baffling scientists and sparking fears that Arctic icecaps are melting faster than previously thought.Experts say the sun should have risen over the Arctic nation's most westerly town, Ilulissat, yesterday, ending a month-and-a-half of winter darkness.
But for the first time in history light began creeping over the horizon at around 1pm on Tuesday - 48 hours ahead of the usual date of 13 January.
The mysterious sunrise has confused scientists, although it is believed
the most likely explanation is that it is down to the lower height of melting icecaps allowing the sun's light to penetrate through earlier.Thomas Posch, of the Institute for Astronomy of the University of Vienna, said that a local change of the horizon was 'by far the most obvious explanation'.
He said as the ice sinks, so to does the horizon, creating the illusion that the sun has risen early. This theory, based on the gradual decline of Greenland's ice sheet, is backed by recent climate studies.A report by the World Meteorology Organization shows that temperatures in
Greenland have risen around 3C above average over the last year.It also reported that December was much warmer than usual with rainfall instead of snow recorded for the first time in Kuujjuaq since records began.
Source:
The DailyMail, "The sun rises two days early in Greenland, sparking fears that climate change is accelerating", accessed January 15, 2011
Nice try... except that 30 seconds with Google earth shows that the horizon as seen from Ilulissat is rock not ice. It's getting pretty warm in some places, but I don't see rock melting yet.
ReplyDeleteThe more likely explanation, which people all over the world have observed, is that the axial tilt of the earth has increased to at least 29 degrees.