Large-Scale Reductions in Terrestrial Carbon Uptake Following Central Pacific El Niño
AffiliationSchool of Natural Resources and the Environment, University of Arizona
El Niño-southern oscillation
MetadataShow full item record
PublisherBlackwell Publishing Ltd
CitationDannenberg, M. P., Smith, W. K., Zhang, Y., Song, C., Huntzinger, D. N., & Moore, D. J. (2021). Large‐scale reductions in terrestrial carbon uptake following central Pacific El Niño. Geophysical Research Letters, e2020GL092367.
JournalGeophysical Research Letters
RightsCopyright © 2021 American Geophysical Union. All Rights Reserved.
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractThe El Niño–Southern Oscillation (ENSO) affects global climate and ecosystems, but a recent shift toward more frequent central Pacific (CP) El Niño events could alter these relationships. Here, we show strong responses of the terrestrial carbon cycle to CP ENSO, exceeding even those to canonical eastern Pacific (EP) ENSO. Annual GPP of both global tropical forests and semiarid ecosystems were reduced by ∼0.3–0.5 Pg C yr−1 K−1 increase in CP sea surface temperatures (SSTs), which also reduced net ecosystem production of key tropical and semiarid regions like the Amazon and Australia, but with smaller (and generally not significant) responses to EP SSTs. Given these large negative responses of ecosystem production to CP SSTs, our results suggest that a recent shift toward CP-dominated ENSO events could further alter Earth's terrestrial carbon cycle, especially when coupled with possible increases in ENSO amplitude with continued warming. © 2021. American Geophysical Union. All Rights Reserved.
Note6 month embargo; first published: 19 February 2021
VersionFinal published version