10 NASA scientists speak on 400 ppm CO2 milestone

MLO CO2 chart with faces
Public Domain MLO

Straight from the source

Earlier this month, our atmosphere crossed an important - and potentially dangerous - milestone: Based on readings from the Mauna Loa Observatory in Hawaii, we reached 400 ppm of CO2 for the first time in about 3 million years.

NASA has posted some reactions from 10 climate scientists on this historic event. As you can probably imagine, the mood is not very celebratory...

NASA scientist quoteNASA/Screen capture

You can read all the quotes here.

NASA scientist quoteNASA/Screen capture

Here's the two years chart for atmospheric CO2 concentration (notice the seasonal change caused by the fact that there's more landmass in the North half of the planet than the South):

CO2 two year chartMLO/Public Domain


See also: CO2 levels in atmosphere reaching 400ppm for first time in 3 million years

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