Enhanced North American carbon uptake associated with El Niño

Lei Hu, Arlyn E. Andrews, Kirk W. Thoning, Colm Sweeney, John B. Miller, Anna M. Michalak, Ed Dlugokencky, Pieter P. Tans, Yoichi P. Shiga, Marikate Mountain, Thomas Nehrkorn, Stephen A. Montzka, Kathryn McKain, Jonathan Kofler, Michael Trudeau, Sylvia E. Michel, Sébastien C. Biraud, Marc L. Fischer, Doug E.J. Worthy, Bruce H. Vaughn & 4 others James W.C. White, Vineet Yadav, Sourish Basu, Ivar R. Van Der Velde

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Long-term atmospheric CO2 mole fraction and d13CO2 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.

Original languageEnglish
Article numberaaw0076
JournalScience advances
Volume5
Issue number6
DOIs
Publication statusPublished - 5 Jun 2019

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availability
ecosystems
carbon
water
biosphere
Southern Oscillation
coolers
summer
anomalies
atmospheres
temperature
air
estimates

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Hu, L., Andrews, A. E., Thoning, K. W., Sweeney, C., Miller, J. B., Michalak, A. M., ... Van Der Velde, I. R. (2019). Enhanced North American carbon uptake associated with El Niño. Science advances, 5(6), [aaw0076]. https://doi.org/10.1126/sciadv.aaw0076
Hu, Lei ; Andrews, Arlyn E. ; Thoning, Kirk W. ; Sweeney, Colm ; Miller, John B. ; Michalak, Anna M. ; Dlugokencky, Ed ; Tans, Pieter P. ; Shiga, Yoichi P. ; Mountain, Marikate ; Nehrkorn, Thomas ; Montzka, Stephen A. ; McKain, Kathryn ; Kofler, Jonathan ; Trudeau, Michael ; Michel, Sylvia E. ; Biraud, Sébastien C. ; Fischer, Marc L. ; Worthy, Doug E.J. ; Vaughn, Bruce H. ; White, James W.C. ; Yadav, Vineet ; Basu, Sourish ; Van Der Velde, Ivar R. / Enhanced North American carbon uptake associated with El Niño. In: Science advances. 2019 ; Vol. 5, No. 6.
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title = "Enhanced North American carbon uptake associated with El Ni{\~n}o",
abstract = "Long-term atmospheric CO2 mole fraction and d13CO2 observations over North America document persistent responses to the El Ni{\~n}o-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 Ni{\~n}o than during La Ni{\~n}a between 2007 and 2015, partially offsetting increases of net tropical biosphere-to-atmosphere carbon flux around El Ni{\~n}o. 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 Ni{\~n}o.",
author = "Lei Hu and Andrews, {Arlyn E.} and Thoning, {Kirk W.} and Colm Sweeney and Miller, {John B.} and Michalak, {Anna M.} and Ed Dlugokencky and Tans, {Pieter P.} and Shiga, {Yoichi P.} and Marikate Mountain and Thomas Nehrkorn and Montzka, {Stephen A.} and Kathryn McKain and Jonathan Kofler and Michael Trudeau and Michel, {Sylvia E.} and Biraud, {S{\'e}bastien C.} and Fischer, {Marc L.} and Worthy, {Doug E.J.} and Vaughn, {Bruce H.} and White, {James W.C.} and Vineet Yadav and Sourish Basu and {Van Der Velde}, {Ivar R.}",
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Hu, L, Andrews, AE, Thoning, KW, Sweeney, C, Miller, JB, Michalak, AM, Dlugokencky, E, Tans, PP, Shiga, YP, Mountain, M, Nehrkorn, T, Montzka, SA, McKain, K, Kofler, J, Trudeau, M, Michel, SE, Biraud, SC, Fischer, ML, Worthy, DEJ, Vaughn, BH, White, JWC, Yadav, V, Basu, S & Van Der Velde, IR 2019, 'Enhanced North American carbon uptake associated with El Niño' Science advances, vol. 5, no. 6, aaw0076. https://doi.org/10.1126/sciadv.aaw0076

Enhanced North American carbon uptake associated with El Niño. / Hu, Lei; Andrews, Arlyn E.; Thoning, Kirk W.; Sweeney, Colm; Miller, John B.; Michalak, Anna M.; Dlugokencky, Ed; Tans, Pieter P.; Shiga, Yoichi P.; Mountain, Marikate; Nehrkorn, Thomas; Montzka, Stephen A.; McKain, Kathryn; Kofler, Jonathan; Trudeau, Michael; Michel, Sylvia E.; Biraud, Sébastien C.; Fischer, Marc L.; Worthy, Doug E.J.; Vaughn, Bruce H.; White, James W.C.; Yadav, Vineet; Basu, Sourish; Van Der Velde, Ivar R.

In: Science advances, Vol. 5, No. 6, aaw0076, 05.06.2019.

Research output: Contribution to JournalArticleAcademicpeer-review

TY - JOUR

T1 - Enhanced North American carbon uptake associated with El Niño

AU - Hu, Lei

AU - Andrews, Arlyn E.

AU - Thoning, Kirk W.

AU - Sweeney, Colm

AU - Miller, John B.

AU - Michalak, Anna M.

AU - Dlugokencky, Ed

AU - Tans, Pieter P.

AU - Shiga, Yoichi P.

AU - Mountain, Marikate

AU - Nehrkorn, Thomas

AU - Montzka, Stephen A.

AU - McKain, Kathryn

AU - Kofler, Jonathan

AU - Trudeau, Michael

AU - Michel, Sylvia E.

AU - Biraud, Sébastien C.

AU - Fischer, Marc L.

AU - Worthy, Doug E.J.

AU - Vaughn, Bruce H.

AU - White, James W.C.

AU - Yadav, Vineet

AU - Basu, Sourish

AU - Van Der Velde, Ivar R.

PY - 2019/6/5

Y1 - 2019/6/5

N2 - Long-term atmospheric CO2 mole fraction and d13CO2 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.

AB - Long-term atmospheric CO2 mole fraction and d13CO2 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.

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M3 - Article

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JO - Science advances

JF - Science advances

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Hu L, Andrews AE, Thoning KW, Sweeney C, Miller JB, Michalak AM et al. Enhanced North American carbon uptake associated with El Niño. Science advances. 2019 Jun 5;5(6). aaw0076. https://doi.org/10.1126/sciadv.aaw0076