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Regional Responses of Vegetation Productivity to the Two Phases of ENSO

Wu, Mousong LU ; Jiang, Fei ; Scholze, Marko LU ; Chen, Deliang ; Ju, Weimin ; Wang, Songhan ; Kaminski, Thomas ; Lu, Zhengyao LU ; Vossbeck, Michael and Zheng, Minjie LU (2024) In Geophysical Research Letters 51(8).
Abstract

The two phases of El-Niño-Southern Oscillation (ENSO) influence both regional and global terrestrial vegetation productivity on inter-annual scales. However, the major drivers for the regional vegetation productivity and their controlling strengths during different phases of ENSO remain unclear. We herein disentangled the impacts of two phases of ENSO on regional carbon cycle using multiple data sets. We found that soil moisture predominantly accounts for ∼40% of the variability in regional vegetation productivity during ENSO events. Our results showed that the satellite-derived vegetation productivity proxies, gross primary productivity from data-driven models (FLUXCOM) and observation-constrained ecosystem model (Carbon Cycle Data... (More)

The two phases of El-Niño-Southern Oscillation (ENSO) influence both regional and global terrestrial vegetation productivity on inter-annual scales. However, the major drivers for the regional vegetation productivity and their controlling strengths during different phases of ENSO remain unclear. We herein disentangled the impacts of two phases of ENSO on regional carbon cycle using multiple data sets. We found that soil moisture predominantly accounts for ∼40% of the variability in regional vegetation productivity during ENSO events. Our results showed that the satellite-derived vegetation productivity proxies, gross primary productivity from data-driven models (FLUXCOM) and observation-constrained ecosystem model (Carbon Cycle Data Assimilation System) generally agree in depicting the contribution of soil moisture and air temperature in modulating regional vegetation productivity. However, the ensemble of weakly constrained ecosystem models exhibits non-negligible discrepancies in the roles of vapor pressure deficit and radiation over extra-tropics. This study highlights the significance of water in regulating regional vegetation productivity during ENSO.

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author
; ; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ecosystem modeling, ENSO, gross primary productivity, soil moisture, variability
in
Geophysical Research Letters
volume
51
issue
8
article number
e2024GL108176
publisher
American Geophysical Union (AGU)
external identifiers
  • scopus:85191052148
ISSN
0094-8276
DOI
10.1029/2024GL108176
language
English
LU publication?
yes
id
02762481-0ffb-4116-84d4-bf438a45c2cb
date added to LUP
2024-05-06 14:18:45
date last changed
2024-05-06 14:19:26
@article{02762481-0ffb-4116-84d4-bf438a45c2cb,
  abstract     = {{<p>The two phases of El-Niño-Southern Oscillation (ENSO) influence both regional and global terrestrial vegetation productivity on inter-annual scales. However, the major drivers for the regional vegetation productivity and their controlling strengths during different phases of ENSO remain unclear. We herein disentangled the impacts of two phases of ENSO on regional carbon cycle using multiple data sets. We found that soil moisture predominantly accounts for ∼40% of the variability in regional vegetation productivity during ENSO events. Our results showed that the satellite-derived vegetation productivity proxies, gross primary productivity from data-driven models (FLUXCOM) and observation-constrained ecosystem model (Carbon Cycle Data Assimilation System) generally agree in depicting the contribution of soil moisture and air temperature in modulating regional vegetation productivity. However, the ensemble of weakly constrained ecosystem models exhibits non-negligible discrepancies in the roles of vapor pressure deficit and radiation over extra-tropics. This study highlights the significance of water in regulating regional vegetation productivity during ENSO.</p>}},
  author       = {{Wu, Mousong and Jiang, Fei and Scholze, Marko and Chen, Deliang and Ju, Weimin and Wang, Songhan and Kaminski, Thomas and Lu, Zhengyao and Vossbeck, Michael and Zheng, Minjie}},
  issn         = {{0094-8276}},
  keywords     = {{ecosystem modeling; ENSO; gross primary productivity; soil moisture; variability}},
  language     = {{eng}},
  month        = {{04}},
  number       = {{8}},
  publisher    = {{American Geophysical Union (AGU)}},
  series       = {{Geophysical Research Letters}},
  title        = {{Regional Responses of Vegetation Productivity to the Two Phases of ENSO}},
  url          = {{http://dx.doi.org/10.1029/2024GL108176}},
  doi          = {{10.1029/2024GL108176}},
  volume       = {{51}},
  year         = {{2024}},
}