Scroll down to view previous years, scroll up to re-add more recent years to the stack.
Display settings: If you choose the "Whole Stack" display option, you will be able to view the data from the currently selected year, as well as previous years' data displayed underneath. If you choose the "Current Layer" display option, only one year's data will be displayed at a time. NOTE: This has only been tested in Chrome and Firefox. This performs best in Google Chrome.
This visualization uses the GISTEMP Combined Land-Surface Air and Sea-Surface Water Temperature Anomalies (Land-Ocean Temperature Index, LOTI) dataset. For each year, a circle is drawn on the radar plot to represent the average temperature anomaly (deviating from the 1951-1980 mean); for each month in a year, a partial arc fills the area between the year's baseline and the month's measured value. The outermost axis represents a +1º global temperature anomaly, while the centerpoint represents a -1º temperature anomaly.