Arctic expedition finishes mission

Scientists report on studies of ocean changes

Two unmanned ice stations have been set up to extend China's ability to observe the northern seas, scientists from the Chinese icebreaker Xuelong said as they wrapped up their most recent expedition.

The domestically developed systems will monitor the interaction of gases, ice and the ocean in the Arctic region. The project will contribute to studies of the Arctic ecosystem and marine environment, scientists said at a media briefing on Wednesday after the return of Xuelong (Snow Dragon).