At last we have some graphics to show that the temperature increase over the last 130 is not statistically significant. When you can draw a straight line through your data and be inside the error bars, there is no way to safely confirm any temperature increase. Source
What is a temperature anomaly?
The term “temperature anomaly” means a departure from a reference value or long-term average. A positive anomaly indicates that the observed temperature was warmer than the reference value, while a negative anomaly indicates that the observed temperature was cooler than the reference value.
More technical on this study here.
Here's a good read from doctor Richard Lindzen : A Case Against Precipitous Climate Action