Sounds like the planet's overall temperature increased by a whole degree in one year. It may be time to stop trying to stop global warming, and start making plans about what to do about rising seas, receding ice, and the other direct impacts to people's lives.
http://www.cbsnews.com/news/un-weather-agency-reports-2015-is-hottest-year-on-record/ (**tag note: merged "global warming" into "climate change")