Atmospheric CO2 -- May, 2017

Source here.

Essentially no change month-over-month.

Insignificant change year-over-year.

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For AGW Deniers

I post these monthly "atmospheric CO2" updates because I'm truly curious to see how this plays out over the next three decades.

I'm pretty convinced that no one can predict that the earth's average global temperature will be 2 degrees warmer one hundred years from now.

This is pretty timely:why you should be skeptical of global warming alarmists. From lifezette:

When it comes to the global warming debate, both alarmists and critics agree on one thing: The earth has warmed by roughly 0.8 degrees Celsius over the past 150 years. It’s the cause of this warming, however, that remains in dispute. And while the public is constantly bombarded with messages about the evils of carbon dioxide emissions, there are actually compelling reasons to believe that contemporary global warming has been driven by rising solar output, not carbon dioxide.