weet niet of ze correct is:
"First noctilucent cloud observation is from year 1885, 15 years after first mother-of-pearl cloud observation and 2 years after explosive volcanic eruption of Mt. Krakatoa in Indonesia. It has been speculated that this first sighting was due to the eruption, ejecting a lot of water vapour and dust to the middle atmosphere. This is consistent with observations; following the event there were numerous and brilliant NLC displays, but then the clouds practically dissappeared for decades. Since the 20's the observations seem to have become more and more frequent, however."
trouwens, Google zoekterm was: "first siting of nlc clouds" Of hoe je zelfs met slecht Engels resultaten kunt vinden (het moet 'sighting' zijn natuurlijk)
"First noctilucent cloud observation is from year 1885, 15 years after first mother-of-pearl cloud observation and 2 years after explosive volcanic eruption of Mt. Krakatoa in Indonesia. It has been speculated that this first sighting was due to the eruption, ejecting a lot of water vapour and dust to the middle atmosphere. This is consistent with observations; following the event there were numerous and brilliant NLC displays, but then the clouds practically dissappeared for decades. Since the 20's the observations seem to have become more and more frequent, however."
trouwens, Google zoekterm was: "first siting of nlc clouds" Of hoe je zelfs met slecht Engels resultaten kunt vinden (het moet 'sighting' zijn natuurlijk)
Bericht laatst bijgewerkt: 15-07-2009 10:32
