Rosberg set the quickest time in qualifying to secure back to back pole positions for Mercedes.
"For the first time this season everything went perfectly today and that's a great feeling," he said.
"Pole position feels like a kick start for me and it's a great achievement from everyone in the team. We still had some work to do after the practice sessions yesterday and the team had a busy night to turn it around."
Rosberg concedes that maintaining his position will be a challenge, considering the pace of other front runners.
"The race tomorrow is a different story and we're very aware of that. It will be difficult, especially with the rear tyres, and we know that other teams were stronger than us on the long runs on Friday. It will be a big challenge to stay ahead but starting from the front helps."
Team-mate Lewis Hamilton was more downbeat after a difficult day.
"I couldn't quite find the pace today and with losing five places from changing the gearbox, we've got a tough challenge ahead starting from ninth place. These things happen and I'll do my best tomorrow."