Sensitivity of atmospheric CO2 growth rate to observed changes in terrestrial water storage

Nature
Vincent HumphreySonia I Seneviratne

Abstract

Land ecosystems absorb on average 30 per cent of anthropogenic carbon dioxide (CO2) emissions, thereby slowing the increase of CO2 concentration in the atmosphere1. Year-to-year variations in the atmospheric CO2 growth rate are mostly due to fluctuating carbon uptake by land ecosystems1. The sensitivity of these fluctuations to changes in tropical temperature has been well documented2-6, but identifying the role of global water availability has proved to be elusive. So far, the only usable proxies for water availability have been time-lagged precipitation anomalies and drought indices3-5, owing to a lack of direct observations. Here, we use recent observations of terrestrial water storage changes derived from satellite gravimetry7 to investigate terrestrial water effects on carbon cycle variability at global to regional scales. We show that the CO2 growth rate is strongly sensitive to observed changes in terrestrial water storage, drier years being associated with faster atmospheric CO2 growth. We demonstrate that this global relationship is independent of known temperature effects and is underestimated in current carbon cycle models. Our results indicate that interannual fluctuations in terrestrial water storage strongly affec...Continue Reading

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Citations

Oct 20, 2018·The New Phytologist·Simone FatichiSebastian Leuzinger
Jul 6, 2019·Global Change Biology·Kun Huang, Jianyang Xia
Jul 5, 2019·Chemistry : a European Journal·Qingqing WangJixin Zhu
Nov 2, 2019·Global Change Biology·Shilong PiaoStephen Sitch
Dec 17, 2019·The New Phytologist·Manon E B SabotGab Abramowitz
Feb 27, 2020·Global Change Biology·Richard A Houghton
Feb 18, 2020·The New Phytologist·Charlotte GrossiordNate G McDowell
May 10, 2020·Annals of the New York Academy of Sciences·Dominik L SchumacherDiego G Miralles
Sep 20, 2019·Nature Climate Change·Byron D TapleyIsabella Velicogna
Jan 9, 2020·Environmental Science and Pollution Research International·Li HuangMi Zhou
Apr 15, 2020·Proceedings of the National Academy of Sciences of the United States of America·Yao ZhangPierre Gentine
Oct 1, 2020·Nature Communications·Laibao LiuSonia I Seneviratne
Jul 31, 2019·Nature Plants·Lei FanJosep Peñuelas
Mar 27, 2020·Frontiers in Psychiatry·Paolo CianconiLuigi Janiri
Sep 8, 2020·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Zheng FuFranziska Koebsch
Jun 25, 2020·Nature Communications·Chao YueAlexander A Nassikas
Jan 25, 2019·Nature·Julia K GreenPierre Gentine
Feb 15, 2020·Nature Communications·Laura E CondonReed M Maxwell
Sep 8, 2020·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Mana GharunNina Buchmann
Dec 16, 2020·Proceedings of the National Academy of Sciences of the United States of America·Giuliano Maselli LocosselliMarcos Buckeridge
Dec 29, 2020·The Science of the Total Environment·Meena NemiwalDinesh Kumar
Jan 1, 2021·Global Biogeochemical Cycles·Michael O'SullivanWolfgang Buermann
Mar 20, 2021·The Science of the Total Environment·Wenjie HuangJunsheng Li
Apr 2, 2021·Nature·Vincent HumphreyChristian Frankenberg
Feb 26, 2021·Ecological Applications : a Publication of the Ecological Society of America·Daniel Nadal-SalaNadine K Ruehr
Jun 20, 2021·Nature Communications·Wenzhe JiaoPaolo D'Odorico
Jul 16, 2021·International Journal of Biometeorology·Marín Pompa-GarcíaMarcos González-Cásares
Jul 17, 2021·Nature Communications·Gregory DuveillerAlessandro Cescatti
Aug 6, 2021·The Science of the Total Environment·Yu ZhuDharmaveer Singh
Aug 10, 2021·Journal of Environmental Management·Ye YuanPhilippe De Maeyer
Oct 8, 2021·Nature·Gonzalo Miguez-Macho, Ying Fan
Dec 18, 2021·FEMS Microbiology Reviews·Mohammad Bahram, Tarquin Netherway

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Software Mentioned

FluxCom
WaterGAP
GLDAS2
TRENDY
REC
GRACE
Noah

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