Increased atmospheric vapor pressure deficit reduces global vegetation growth

Yuan, Wenping; Zheng, Yi; Piao, Shilong; Ciais, Philippe; Lombardozzi, Danica; Wang, Yingping; Ryu, Youngryel; Chen, Guixing; Dong, Wenjie; Hu, Zhongming; Jain, Atul K.; Jiang, Chongya; Kato, Etsushi; Li, Shihua; Lienert, Sebastian; Liu, Shuguang; Nabel, Julia E.M.S.; Qin, Zhangcai; Quine, Timothy; Sitch, Stephen; ... (2019). Increased atmospheric vapor pressure deficit reduces global vegetation growth. Science Advances, 5(8), eaax1396. American Association for the Advancement of Science 10.1126/sciadv.aax1396

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Atmospheric vapor pressure deficit (VPD) is a critical variable in determining plant photosynthesis. Synthesis of four global climate datasets reveals a sharp increase of VPD after the late 1990s. In response, the vegetation greening trend indicated by a satellite-derived vegetation index (GIMMS3g), which was evident before the late 1990s, was subsequently stalled or reversed. Terrestrial gross primary production derived from two satellite-based models (revised EC-LUE and MODIS) exhibits persistent and widespread decreases after the late 1990s due to increased VPD, which offset the positive CO₂ fertilization effect. Six Earth system models have consistently projected continuous increases of VPD throughout the current century. Our results highlight that the impacts of VPD on vegetation growth should be adequately considered to assess ecosystem responses to future climate conditions

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Climate and Environmental Physics

UniBE Contributor:

Lienert, Sebastian

Subjects:

500 Science > 530 Physics

ISSN:

2375-2548

Publisher:

American Association for the Advancement of Science

Language:

English

Submitter:

Fortunat Joos

Date Deposited:

30 Mar 2020 10:16

Last Modified:

30 Mar 2020 10:16

Publisher DOI:

10.1126/sciadv.aax1396

BORIS DOI:

10.7892/boris.141545

URI:

https://boris.unibe.ch/id/eprint/141545

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