During the past year, the needles on the climate dashboard for global ice melt, heatwaves, ocean temperatures, coral die-offs, floods and droughts all tilted far into the red warning zone. In summer and fall, monthly global temperature anomalies spiked beyond most projections, helping to drive those extremes, and they may not level off anytime soon, said James Hansen, lead author of a study published today in the journal Oxford Open Climate Change that projects a big jump in the rate of warming in the next few decades.