the National Centre for Atmospheric Science (NCAS) in the UK. The instrument transmits laser beams into the atmosphere and measures the light that is backscattered towards the ground.
The instrument was installed on the lowlands close to the volcano Eyjafjallajökull which erupted last year. The aim was to measure windblown resuspended ash from last year's eruption. Following the eruption at Grimsvotn
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Eyjafjallajökull which erupted last year. The aim was to measure windblown resuspended ash from last year's eruption. Following the eruption at Grimsvotn it was on May 22nd moved to the Keflavik International Airport in Keflavík in order to detect ash if as was present in the atmosphere above the airport.
The IMO owns a weather radar which is situated on Miðnesheiði, close to the Keflavík
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of the tephra reached at least 30 m next to
the active craters and it is nowhere less than 5 cm on the
ice cap (Earth Science Institute, University of Iceland,
unpubl. data). This thick insulating tephra layer will in
places slow down melting in the coming years. However,
at higher elevations windblown tephra may lower the
albedo of winter snow early in the spring and enhance
melting. The combined
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