Page last updated at 15:11 GMT, Thursday, 5 March 2009

How to measure Arctic sea-ice


A British team has begun a gruelling trek to the North Pole to discover how quickly the Arctic sea-ice is melting.

During their 1,000km journey, the group plans to take measurements of the thickness of the ice.

It will be the most detailed survey of its kind this season, and should be completed in late May.

Pen Hadow explains how a radar and a hi-tech sledge are key to the expedition.


Story Tools


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