Well, technically this is right about the time of year when CO2 concentration stops increasing and drops sharply for the next couple of months, corresponding to

Well, technically this is right about the time of year when CO2 concentration stops increasing and drops sharply for the next couple of months, corresponding to the Northern hemisphere growing season. CO2 doesn't increase monotonically, it's actually more like a sine wave with an upward trend. It's that upward trend that has everyone rightfully worried, but the seasonal oscillation is part of the pattern too. https://en.wikipedia.org/wiki/Keeling_Curve https://en.wikipedia.org/wiki/Keeling_Curve