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Below is a graph showing temperature data sets with CO2 and sunspot counts. The timeline reflects the fact that each type of dataset has a different range: Sunspot records shown here go back to 1749; instrumental temperature records, 1850; and satellite, 1979. Click the check boxes to show and hide graphs. Graph labels on the right will show and hide the y-scale for each graph.

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Revision: 9/19/11: Added Volcanic influences and cosmic ray measurements; enabled linear trend and smoothed trends, but these are still a work in progress. To use linear trends, display a range of the graph, select the graph to make sure the graph name is displayed at the bottom left corner, then lcick the first of the two buttons at the bottom. A best fit linear trend will be calculated, and when ready, a button will appear to display it. You can create multiple trends, but I don't have features yet that allow you to manage these. The smoothing graph works the same way, but I need to provide an input field allowing the user to indicate how many values should be averaged for each new value in the smoothed trend.

Revision: 1/21/11: Added Law Dome CO2 and extended the timeline.

Revision: 2/17/11: Horizontal markers indicating the vertical axis values can be pinned: Mouse over a scale marker to show the horizontal bar, then click the bar or the label. It's a little finicky, but if you click the numerical value displayed on the scale, it's bar displays on and off.

Revision: 1/21/11: Added Law Dome CO2 and extended the timeline.


GISS: Goddard Institute for Space Studies

NOAA: National Ocean and Atmosphere Administration

HADCRU: Hadley/Climate Research Unit.


UAH: University of Alabama, Huntsville

CO2: Mauna Loa and Law Dome

Sunspots: NASA