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Recent decrease of ...
Recent decrease of the impact of tropical temperature on the carbon cycle linked to increased precipitation
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- Zhang, Wenmin (författare)
- University of Copenhagen
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- Schurgers, Guy (författare)
- University of Copenhagen
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- Peñuelas, Josep (författare)
- Global Ecology Unit CREAF-CSIC-UAB
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- Fensholt, Rasmus (författare)
- University of Copenhagen
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- Yang, Hui (författare)
- Max Planck Institute for Biogeochemistry
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- Tang, Jing (författare)
- Lund University,Lunds universitet,MERGE: ModElling the Regional and Global Earth system,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Institutionen för naturgeografi och ekosystemvetenskap,Centre for Environmental and Climate Science (CEC),Faculty of Science,Dept of Physical Geography and Ecosystem Science,University of Copenhagen
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- Tong, Xiaowei (författare)
- Institute of Subtropical Agriculture, Chinese Academy of Sciences
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- Ciais, Philippe (författare)
- Laboratoire des Sciences du Climat et de l'Environnement
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- Brandt, Martin (författare)
- University of Copenhagen
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(creator_code:org_t)
- 2023-02-21
- 2023
- Engelska 9 s.
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Ingår i: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 14
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- The atmospheric CO2 growth rate (CGR) variability is largely controlled by tropical temperature fluctuations. The sensitivity of CGR to tropical temperature (γCGRT) has strongly increased since 1960, but here we show that this trend has ceased. Here, we use the long-term CO2 records from Mauna Loa and the South Pole to compute CGR, and show that γCGRT increased by 200% from 1960–1979 to 1979–2000 but then decreased by 117% from 1980–2001 to 2001–2020, almost returning back to the level of the 1960s. Variations in γCGRT are significantly correlated with changes in precipitation at a bi-decadal scale. These findings are further corroborated by results from a dynamic vegetation model, collectively suggesting that increases in precipitation control the decreased γCGRT during recent decades. Our results indicate that wetter conditions have led to a decoupling of the impact of the tropical temperature variation on the carbon cycle.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Naturgeografi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Physical Geography (hsv//eng)
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- ref (ämneskategori)
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