Recent decrease of the impact of tropical temperature on the carbon cycle linked to increased precipitation
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 a...
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Online Access: | https://lup.lub.lu.se/record/91db500d-655e-41d1-bdad-3cf120741b1e https://doi.org/10.1038/s41467-023-36727-2 |
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ftulundlup:oai:lup.lub.lu.se:91db500d-655e-41d1-bdad-3cf120741b1e 2024-05-19T07:48:39+00:00 Recent decrease of the impact of tropical temperature on the carbon cycle linked to increased precipitation Zhang, Wenmin Schurgers, Guy Peñuelas, Josep Fensholt, Rasmus Yang, Hui Tang, Jing Tong, Xiaowei Ciais, Philippe Brandt, Martin 2023-02-21 https://lup.lub.lu.se/record/91db500d-655e-41d1-bdad-3cf120741b1e https://doi.org/10.1038/s41467-023-36727-2 eng eng Nature Publishing Group https://lup.lub.lu.se/record/91db500d-655e-41d1-bdad-3cf120741b1e http://dx.doi.org/10.1038/s41467-023-36727-2 scopus:85148548244 pmid:36810352 Nature Communications; 14, no 965 (2023) ISSN: 2041-1723 Environmental Sciences Climate Research Physical Geography contributiontojournal/article info:eu-repo/semantics/article text 2023 ftulundlup https://doi.org/10.1038/s41467-023-36727-2 2024-04-23T23:46:18Z 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. Article in Journal/Newspaper South pole Lund University Publications (LUP) Nature Communications 14 1 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Environmental Sciences Climate Research Physical Geography |
spellingShingle |
Environmental Sciences Climate Research Physical Geography Zhang, Wenmin Schurgers, Guy Peñuelas, Josep Fensholt, Rasmus Yang, Hui Tang, Jing Tong, Xiaowei Ciais, Philippe Brandt, Martin Recent decrease of the impact of tropical temperature on the carbon cycle linked to increased precipitation |
topic_facet |
Environmental Sciences Climate Research Physical Geography |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Zhang, Wenmin Schurgers, Guy Peñuelas, Josep Fensholt, Rasmus Yang, Hui Tang, Jing Tong, Xiaowei Ciais, Philippe Brandt, Martin |
author_facet |
Zhang, Wenmin Schurgers, Guy Peñuelas, Josep Fensholt, Rasmus Yang, Hui Tang, Jing Tong, Xiaowei Ciais, Philippe Brandt, Martin |
author_sort |
Zhang, Wenmin |
title |
Recent decrease of the impact of tropical temperature on the carbon cycle linked to increased precipitation |
title_short |
Recent decrease of the impact of tropical temperature on the carbon cycle linked to increased precipitation |
title_full |
Recent decrease of the impact of tropical temperature on the carbon cycle linked to increased precipitation |
title_fullStr |
Recent decrease of the impact of tropical temperature on the carbon cycle linked to increased precipitation |
title_full_unstemmed |
Recent decrease of the impact of tropical temperature on the carbon cycle linked to increased precipitation |
title_sort |
recent decrease of the impact of tropical temperature on the carbon cycle linked to increased precipitation |
publisher |
Nature Publishing Group |
publishDate |
2023 |
url |
https://lup.lub.lu.se/record/91db500d-655e-41d1-bdad-3cf120741b1e https://doi.org/10.1038/s41467-023-36727-2 |
genre |
South pole |
genre_facet |
South pole |
op_source |
Nature Communications; 14, no 965 (2023) ISSN: 2041-1723 |
op_relation |
https://lup.lub.lu.se/record/91db500d-655e-41d1-bdad-3cf120741b1e http://dx.doi.org/10.1038/s41467-023-36727-2 scopus:85148548244 pmid:36810352 |
op_doi |
https://doi.org/10.1038/s41467-023-36727-2 |
container_title |
Nature Communications |
container_volume |
14 |
container_issue |
1 |
_version_ |
1799466955563859968 |