The dry season intensity as a key driver of NPP trends

Guillermo Murray-Tortarolo; Pierre Friedlingstein; Stephen Sitch; Sonia I. Seneviratne; Imogen Fletcher; Brigitte Mueller; Peter Greve; Alessandro Anav; Yi Liu; Anders Ahlström; Chris Huntingford; Sam Levis; Peter Levy; Mark Lomas; Benjamin Poulter; Nicholas Viovy; Sonke Zaehle; Ning Zeng

doi:10.1002/2016GL068240

The dry season intensity as a key driver of NPP trends

Guillermo Murray-Tortarolo, Pierre Friedlingstein, Stephen Sitch, Sonia I. Seneviratne, Imogen Fletcher, Brigitte Mueller, Peter Greve, Alessandro Anav, Yi Liu, Anders Ahlström, Chris Huntingford, Sam Levis, Peter Levy, Mark Lomas, Benjamin Poulter, Nicholas Viovy, Sonke Zaehle, Ning Zeng

Research output: Contribution to journal › Article › peer-review

Abstract

We analyze the impacts of changing dry season length and intensity on vegetation productivity and biomass. Our results show a wetness asymmetry in dry ecosystems, with dry seasons becoming drier and wet seasons becoming wetter, likely caused by climate change. The increasingly intense dry seasons were consistently correlated with a decreasing trend in net primary productivity (NPP) and biomass from different products and could potentially mean a reduction of 10–13% in NPP by 2100. We found that annual NPP in dry ecosystems is particularly sensitive to the intensity of the dry season, whereas an increase in precipitation during the wet season has a smaller effect. We conclude that changes in water availability over the dry season affect vegetation throughout the whole year, driving changes in regional NPP. Moreover, these results suggest that usage of seasonal water fluxes is necessary to improve our understanding of the link between water availability and the land carbon cycle.

Original language	Swedish
Pages (from-to)	2632-2639
Number of pages	8
Journal	Geophysical Research Letters
Volume	43
Issue number	6
DOIs	https://doi.org/10.1002/2016GL068240
Publication status	Published - 2016

Subject classification (UKÄ)

Climate Research

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1002/2016GL068240

Cite this

Murray-Tortarolo, G., Friedlingstein, P., Sitch, S., Seneviratne, S. I., Fletcher, I., Mueller, B., Greve, P., Anav, A., Liu, Y., Ahlström, A., Huntingford, C., Levis, S., Levy, P., Lomas, M., Poulter, B., Viovy, N., Zaehle, S., & Zeng, N. (2016). The dry season intensity as a key driver of NPP trends. Geophysical Research Letters, 43(6), 2632-2639. https://doi.org/10.1002/2016GL068240

@article{8863ab9b2d934199a135aa488fb59e26,

title = "The dry season intensity as a key driver of NPP trends",

abstract = "We analyze the impacts of changing dry season length and intensity on vegetation productivity and biomass. Our results show a wetness asymmetry in dry ecosystems, with dry seasons becoming drier and wet seasons becoming wetter, likely caused by climate change. The increasingly intense dry seasons were consistently correlated with a decreasing trend in net primary productivity (NPP) and biomass from different products and could potentially mean a reduction of 10–13% in NPP by 2100. We found that annual NPP in dry ecosystems is particularly sensitive to the intensity of the dry season, whereas an increase in precipitation during the wet season has a smaller effect. We conclude that changes in water availability over the dry season affect vegetation throughout the whole year, driving changes in regional NPP. Moreover, these results suggest that usage of seasonal water fluxes is necessary to improve our understanding of the link between water availability and the land carbon cycle.",

keywords = "dry season length land carbon cycle drought 0428 Carbon cycling 1630 Impacts of global change 1655 Water cycles 1615 Biogeochemical cycles, processes, and modeling 1616 Climate variability",

author = "Guillermo Murray-Tortarolo and Pierre Friedlingstein and Stephen Sitch and Seneviratne, {Sonia I.} and Imogen Fletcher and Brigitte Mueller and Peter Greve and Alessandro Anav and Yi Liu and Anders Ahlstr{\"o}m and Chris Huntingford and Sam Levis and Peter Levy and Mark Lomas and Benjamin Poulter and Nicholas Viovy and Sonke Zaehle and Ning Zeng",

year = "2016",

doi = "10.1002/2016GL068240",

language = "svenska",

volume = "43",

pages = "2632--2639",

journal = "Geophysical Research Letters",

issn = "1944-8007",

publisher = "American Geophysical Union (AGU)",

number = "6",

}

Murray-Tortarolo, G, Friedlingstein, P, Sitch, S, Seneviratne, SI, Fletcher, I, Mueller, B, Greve, P, Anav, A, Liu, Y, Ahlström, A, Huntingford, C, Levis, S, Levy, P, Lomas, M, Poulter, B, Viovy, N, Zaehle, S & Zeng, N 2016, 'The dry season intensity as a key driver of NPP trends', Geophysical Research Letters, vol. 43, no. 6, pp. 2632-2639. https://doi.org/10.1002/2016GL068240

TY - JOUR

T1 - The dry season intensity as a key driver of NPP trends

AU - Murray-Tortarolo, Guillermo

AU - Friedlingstein, Pierre

AU - Sitch, Stephen

AU - Seneviratne, Sonia I.

AU - Fletcher, Imogen

AU - Mueller, Brigitte

AU - Greve, Peter

AU - Anav, Alessandro

AU - Liu, Yi

AU - Ahlström, Anders

AU - Huntingford, Chris

AU - Levis, Sam

AU - Levy, Peter

AU - Lomas, Mark

AU - Poulter, Benjamin

AU - Viovy, Nicholas

AU - Zaehle, Sonke

AU - Zeng, Ning

PY - 2016

Y1 - 2016

N2 - We analyze the impacts of changing dry season length and intensity on vegetation productivity and biomass. Our results show a wetness asymmetry in dry ecosystems, with dry seasons becoming drier and wet seasons becoming wetter, likely caused by climate change. The increasingly intense dry seasons were consistently correlated with a decreasing trend in net primary productivity (NPP) and biomass from different products and could potentially mean a reduction of 10–13% in NPP by 2100. We found that annual NPP in dry ecosystems is particularly sensitive to the intensity of the dry season, whereas an increase in precipitation during the wet season has a smaller effect. We conclude that changes in water availability over the dry season affect vegetation throughout the whole year, driving changes in regional NPP. Moreover, these results suggest that usage of seasonal water fluxes is necessary to improve our understanding of the link between water availability and the land carbon cycle.

AB - We analyze the impacts of changing dry season length and intensity on vegetation productivity and biomass. Our results show a wetness asymmetry in dry ecosystems, with dry seasons becoming drier and wet seasons becoming wetter, likely caused by climate change. The increasingly intense dry seasons were consistently correlated with a decreasing trend in net primary productivity (NPP) and biomass from different products and could potentially mean a reduction of 10–13% in NPP by 2100. We found that annual NPP in dry ecosystems is particularly sensitive to the intensity of the dry season, whereas an increase in precipitation during the wet season has a smaller effect. We conclude that changes in water availability over the dry season affect vegetation throughout the whole year, driving changes in regional NPP. Moreover, these results suggest that usage of seasonal water fluxes is necessary to improve our understanding of the link between water availability and the land carbon cycle.

KW - dry season length land carbon cycle drought 0428 Carbon cycling 1630 Impacts of global change 1655 Water cycles 1615 Biogeochemical cycles, processes, and modeling 1616 Climate variability

U2 - 10.1002/2016GL068240

DO - 10.1002/2016GL068240

M3 - Artikel i vetenskaplig tidskrift

SN - 1944-8007

VL - 43

SP - 2632

EP - 2639

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 6

ER -