The graph shows spikes and drops in temperature over the past 9,500 years, charting how much higher or lower each year’s temperatures are than the average temperature over the entire time period.

Once the data is logged, the SD card can be removed and the .csv file opened in spreadsheet software to make a graph showing temperature change over time. Posted in Arduino Hacks, ...

The graph cannot show modern global temperature change because no data is displayed after 1885. Modern global warming began around that time and escalated significantly in the 1980s, ...

The bottom line here is the same as it has been for a long, long time: The planet is warming up. The rate at which the temperature is rising took a huge leap starting a century ago, and it’s due ...