Distinct impacts of the El Niño–Southern Oscillation and Indian Ocean Dipole on China's gross primary production

Yan, Ran; Wang, Jun; Ju, Weimin; Xing, Xiuli; Yu, Miao; Wang, Meirong; Tan, Jingye; Wang, Xunmei; Wang, Hengmao; Jiang, Fei

doi:https://doi.org/10.5194/bg-21-5027-2024

Articles | Volume 21, issue 22

https://doi.org/10.5194/bg-21-5027-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-21-5027-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 22

Research article

|

15 Nov 2024

Research article |

| 15 Nov 2024

Distinct impacts of the El Niño–Southern Oscillation and Indian Ocean Dipole on China's gross primary production

Ran Yan, Jun Wang, Weimin Ju, Xiuli Xing, Miao Yu, Meirong Wang, Jingye Tan, Xunmei Wang, Hengmao Wang, and Fei Jiang

Supplement

https://doi.org/10.5194/bg-21-5027-2024-supplement

Data sets

GLOBMAP global Leaf Area Index since 1981 (Version 3.0), R. Liu et al. https://doi.org/10.5281/zenodo.4700264

ERA5 hourly data on single levels from 1940 to present H. Hersbach et al. https://doi.org/10.24381/cds.adbb2d47

Trends in globally-averaged CO2 determined from NOAA Global Monitoring Laboratory measurements X. Lan et al. https://doi.org/10.15138/9N0H-ZH07

MCD12Q1 MODIS/Terra+Aqua Land Cover Type Yearly L3 Global 500 m SIN Grid V006 M. Friedl and D. Sulla-Menashe https://doi.org/10.5067/MODIS/MCD12Q1.006

Global Agro-ecological Zones Assessment for Agriculture (GAEZ 2008) G. Fischer et al. https://data.tpdc.ac.cn/zh-hans/data/611f7d50-b419-4d14-b4dd-4a944b141175

ERA5-Land monthly averaged data from 1950 to present S. J. Muñoz https://doi.org/10.24381/cds.68d2bb30

Construction and progress of Chinese terrestrial ecosystem carbon, nitrogen and water fluxes coordinated observation (https://chinaflux.org/) G. Yu et al. https://doi.org/10.1007/s11442-016-1300-5

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Short summary

Our study reveals that the effects of the El Niño–Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD) on China's gross primary production (GPP) are basically opposite, with obvious seasonal changes. Soil moisture primarily influences GPP during ENSO events (except spring) and temperature during IOD events (except fall). Quantitatively, China's annual GPP displays modest positive anomalies during La Niña and negative anomalies in El Niño years, driven by significant seasonal variations.