A recent article supported by AC4 entitled “Enhanced North American carbon uptake associated with El Niño” was published June 5, 2019, in Science Advances. The study found that long-term atmospheric CO2 observations over North America document a persistent response to the El Niño–Southern Oscillation.
Results from the paper suggest that increased water availability and favorable temperature conditions (warmer spring and cooler summer) could cause enhanced carbon uptake over North America near and during El Niño.
See also NOAA Research News article: Surprisingly large carbon uptake by North American Biosphere during El Niños.
