Could hit 400 parts per million in January
Northern Hemisphere terrestrial ecosystems are taking “deeper breaths,” according to a multi-agency study
A companion phenomenon of emitting CO2 into the atmosphere is the loading of the oceans with elevated levels of carbon dioxide created by fossil fuel burning and other human activities.
Tim Lueker, research scientist in the Scripps CO2 Research Group, only needs one sentence to explain why atmospheric CO2 peaks in May.
Some aspects of CO2 analysis require old-school methods
Readers may have noticed that the daily average baseline value for May 13, which was originally reported on May 14 as “Too Variable”, was subsequently changed on May 15 to a value of 400.17 parts per million (ppm).
May 10 Comment: NOAA has reported 400.03 for May 9, 2013, while Scripps has reported 399.73. The difference partly reflects
The farther north a CO2 reading is made, the wider it swings with the seasons
Many readers noticed that there were several days without readings recently.
[instrumentstatuslist] May 10 Comment: NOAA has reported 400.03 for yesterday, but Scripps has reported 399.73. The difference is similar to other differences we have reported. The difference partly reflects time zone differences. NOAA uses UTC, whereas we use local time in Hawaii to define the start and stop of a given day. Changing to UTC excludes the lower CO2 period …