Anna Michalak - Enhanced North American carbon uptake associated with

Journal article

Lei Hu, A. Andrews, K. Thoning, C. Sweeney, John B. Miller, A. Michalak, E. Dlugokencky, P. Tans, Y. Shiga, M. Mountain, T. Nehrkorn, S. Montzka, K. McKain, J. Kofler, M. Trudeau, S. Michel, S. Biraud, M. Fischer, D. Worthy, B. Vaughn, J. White, V. Yadav, S. Basu, I. R. van der Velde
Science Advances, 2019

Semantic Scholar DOI PubMedCentral PubMed

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APA Click to copy
Hu, L., Andrews, A., Thoning, K., Sweeney, C., Miller, J. B., Michalak, A., … van der Velde, I. R. (2019). Enhanced North American carbon uptake associated with El Niño. Science Advances.

Chicago/Turabian Click to copy
Hu, Lei, A. Andrews, K. Thoning, C. Sweeney, John B. Miller, A. Michalak, E. Dlugokencky, et al. “Enhanced North American Carbon Uptake Associated with El Niño.” Science Advances (2019).

MLA Click to copy
Hu, Lei, et al. “Enhanced North American Carbon Uptake Associated with El Niño.” Science Advances, 2019.

BibTeX Click to copy

@article{lei2019a,
  title = {Enhanced North American carbon uptake associated with El Niño},
  year = {2019},
  journal = {Science Advances},
  author = {Hu, Lei and Andrews, A. and Thoning, K. and Sweeney, C. and Miller, John B. and Michalak, A. and Dlugokencky, E. and Tans, P. and Shiga, Y. and Mountain, M. and Nehrkorn, T. and Montzka, S. and McKain, K. and Kofler, J. and Trudeau, M. and Michel, S. and Biraud, S. and Fischer, M. and Worthy, D. and Vaughn, B. and White, J. and Yadav, V. and Basu, S. and van der Velde, I. R.}
}

Abstract

North American ecosystems absorb more CO2 from the atmosphere during El Niño than during La Niña periods. Long-term atmospheric CO2 mole fraction and δ13CO2 observations over North America document persistent responses to the El Niño–Southern Oscillation. We estimate these responses corresponded to 0.61 (0.45 to 0.79) PgC year−1 more North American carbon uptake during El Niño than during La Niña between 2007 and 2015, partially offsetting increases of net tropical biosphere-to-atmosphere carbon flux around El Niño. Anomalies in derived North American net ecosystem exchange (NEE) display strong but opposite correlations with surface air temperature between seasons, while their correlation with water availability was more constant throughout the year, such that water availability is the dominant control on annual NEE variability over North America. These results suggest that increased water availability and favorable temperature conditions (warmer spring and cooler summer) caused enhanced carbon uptake over North America near and during El Niño.