Global warning/climate change expedition cancelled due to Ice !!

An Arctic Climate change study has been cancelled due to excessive ice flow . A Canadian Icebreaker will NOT be venturing north this year to study Climate change due to thick Ice ! Didn't a few Icebreakers get STUCK IN THE ICE performing a Global warming expedition a few years ago ?
Is it getting warmer or cooler ? Is it caused by man or a natural cycle ? Search it ...