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RE: Grimsvotn volcano
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Flightradar24.com shows live airplane traffic from different parts around the world. The technique to receive flight information from aircraft is called ADS-B. That means the Flightradar24.com can only show information about aircraft equipped with ADS-B transponders. Today about 60% of the passenger aircraft and only a small amount of military and private aircraft have an ADS-B transponder.
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Strong Grimsvötn volcanic eruption may indicate a shorter activity phase

Following new eruptions from Iceland's most active volcano, Grimsvötn, a leading earth scientist at Durham University says that the relative strength of the initial eruption of the Grimsvötn volcano may mean a shorter duration and less disruption.
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Europe in wrangle over new ash crisis rules

New airspace closure rules decided after last year's Icelandic volcanic eruption have caused divisions in Europe on how to decide whether airlines can fly near the ash cloud.
A bureaucratic turf war has so far prevented Europe's controllers from applying the same rules to everyone, with Germany insisting on closing skies as a precaution where there are signs of significant ash, aviation sources said on Tuesday.

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The whole of mainland Scotland is expected to be covered by the ash cloud from 6am today - news which triggered a flurry of flight cancellations last night.
The ash is expected to be of high concentration up to 20,000ft and no UK airlines applied for permission from the Civil Aviation Authority (CAA) to fly through it.

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Volcanic Ash Advisory from London - Issued graphics

PFXD01_EGRR - Received at 0643 on 24 May 2011 - (PNG, 183 kB)
PFXD01_EGRR - Received at 0047 on 24 May 2011 - (PNG, 172 kB)
PFXD01_EGRR - Received at 1844 on 23 May 2011 - (PNG, 174 kB)
PFXD01_EGRR - Received at 1248 on 23 May 2011 - (PNG, 149 kB)
PFXD01_EGRR - Received at 0642 on 23 May 2011 - (PNG, 160 kB)
PFXD01_EGRR - Received at 0027 on 23 May 2011 - (PNG, 157 kB)



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Scottish flights disrupted by volcano ash plume

Scotland's airports have been hit by severe disruption as drifting ash from an Icelandic volcano caused delays and cancellations.
Thousands of passengers have been affected after airlines suspended services in and out of Scotland, with ash forecast until at least 1900 BST.
The cancellations follow severe storms which have affected road and rail travel across Scotland.

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Satellite image of Grimsvotn volcano

grimsvotn.jpg
Expand  (1400kb, 2000 x 2600)
Credit NASA



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An eruption began at Grímsvötn volcano at approximately 17:30 UTC, May 21st 2011.
Eruptions in Grímsvötn start as subglacial eruptions, which quickly break the ice cover. At 21:00 UTC, the eruption plume had risen to an altitude of over 65,000 ft (~20 km). Initially, the plume is expected to drift to the east and subsequently to the north. Thus, the ash is not expected to impact aviation in Europe, at least not during the first 24 hours.

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Volcanic Ash Advisory from London - Issued graphics

PFXD01_EGRR - Received at 1822 on 22 May 2011 - (PNG, 173 kB)
PFXD01_EGRR - Received at 1342 on 22 May 2011 - (PNG, 134 kB)
PFXD01_EGRR - Received at 1306 on 22 May 2011 - (PNG, 149 kB)
PFXD01_EGRR - Received at 0646 on 22 May 2011 - (PNG, 116 kB)
PFXD01_EGRR - Received at 0120 on 22 May 2011 - (PNG, 95 kB)
PFXD01_EGRR - Received at 2203 on 21 May 2011 - (PNG, 90 kB)

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Ash from Icelandic volcano 'may drift over UK'

Ash from a volcanic eruption in Iceland could begin to drift across the UK towards the end of the week, forecasters have said.
Aviation officials said there was no effect on UK airspace at present, but they were "monitoring the situation closely".

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Ash from an erupting Icelandic volcano could reach northern Scotland by Tuesday and parts of Britain, France and Spain by Thursday or Friday if the eruption continues at the same rate, airlines were warned on Sunday.
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