 Norwegian Prime Minister Jens Stoltenberg visited Troll in January 2008 , when he among other things opened TrollSat . At the same time , as part of the International Polar Year , a Norwegian – United States expedition traveled from Troll to the Amundsen – Scott South Pole Station and back . On 23 February 2009 , Norwegian Minister of the Environment Erik Solheim hosted a meeting for environment ministers from 15 countries to discuss climate change and learn about recent research in the field . 
