Page last updated at 15:37 GMT, Tuesday, 20 April 2010 16:37 UK

Balloon aids volcanic ash cloud analysis

The balloon is being used to assess the danger to aircraft of the volcanic ash

A weather balloon has been launched in south west Scotland to help analyse the volcanic ash cloud over the UK.

Met Office scientists have been working with the Universities of Reading and Hertfordshire to gather data about the potential danger to aircraft.

The Stranraer balloon launch measured a 500m (1,640ft) thick layer of volcanic dust at a height of about 4,000m (13,123ft).

The technique was originally developed to study dust clouds in the Sahara.

'Beguilingly blue'

The researchers plan to send the balloon back into the skies over Stranraer on Wednesday morning.

Met Office forecasters helped to identify the best site for the research being led by Prof Giles Harrison of the University of Reading.

He said: "To get good measurements of the ash we needed to be both under the ash plume, but in cloud-free air.

"Fortunately the Met Office predictions for an ideal observation window at a site near Stranraer were bang on, allowing us to launch our balloon to pass directly through the volcanic plume.

"Despite the beguilingly blue sky at Stranraer, the weather balloon measurements showed a layer of volcanic dust at 4km aloft - the plume was about 500m thick, with very abrupt edges."

Print Sponsor

The BBC is not responsible for the content of external internet sites

Has China's housing bubble burst?
How the world's oldest clove tree defied an empire
Why Royal Ballet principal Sergei Polunin quit


Sign in

BBC navigation

Copyright © 2017 BBC. The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.

Americas Africa Europe Middle East South Asia Asia Pacific