Weakening temperature control on the interannual variations of spring carbon uptake across northern lands
Imbalance-P paper contact with Josep Peñuelas: j.penuelas@uab.cat Ongoing spring warming allows the growing season to begin earlier, enhancing carbon uptake in northern ecosystems1, 2, 3. Here we use 34 years of atmospheric CO2 concentration measurements at Barrow, Alaska (BRW, 71° N) to show that t...
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Online Access: | https://ddd.uab.cat/record/181062 |
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ftuabarcelonapb:oai:ddd.uab.cat:181062 2023-10-29T02:35:19+01:00 Weakening temperature control on the interannual variations of spring carbon uptake across northern lands Piao, Shilong Wang, Tao Liu, Zhuou Peng, Shushi Ciais, Philippe Huang, Mengtian Ahlstrom, Anders Burkhart, John F. Chevallier, Frédéric Janssens, Ivan Jeong, Su-Jong Lin, Xin Mao, Jiafu Miller, John Mohammat, Anwar Myneni, Ranga B. Peñuelas, Josep Shi, Xiaoying Stohl, Andreas Yao, Yitong Zhu, Zaichun 2017 application/pdf https://ddd.uab.cat/record/181062 eng eng European Commission 610028 Nature climate change Vol. 7 (2017), p. 359-363 https://ddd.uab.cat/record/181062 urn:10.1038/nclimate3277 urn:oai:ddd.uab.cat:181062 urn:scopus_id:85018782649 urn:wos_id:000400373500017 urn:altmetric_id:19519404 urn:oai:egreta.uab.cat:publications/21b9e5e5-10d7-4d91-bbc0-0ac154fc1547 open access Tots els drets reservats. https://rightsstatements.org/vocab/InC/1.0/ Biogeochemistry Ecological modelling Article 2017 ftuabarcelonapb 2023-10-03T23:54:49Z Imbalance-P paper contact with Josep Peñuelas: j.penuelas@uab.cat Ongoing spring warming allows the growing season to begin earlier, enhancing carbon uptake in northern ecosystems1, 2, 3. Here we use 34 years of atmospheric CO2 concentration measurements at Barrow, Alaska (BRW, 71° N) to show that the interannual relationship between spring temperature and carbon uptake has recently shifted. We use two indicators: the spring zero-crossing date of atmospheric CO2 (SZC) and the magnitude of CO2 drawdown between May and June (SCC). The previously reported strong correlation between SZC, SCC and spring land temperature (ST) was found in the first 17 years of measurements, but disappeared in the last 17 years. As a result, the sensitivity of both SZC and SCC to warming decreased. Simulations with an atmospheric transport model4 coupled to a terrestrial ecosystem model5 suggest that the weakened interannual correlation of SZC and SCC with ST in the last 17 years is attributable to the declining temperature response of spring net primary productivity (NPP) rather than to changes in heterotrophic respiration or in atmospheric transport patterns. Reduced chilling during dormancy and emerging light limitation are possible mechanisms that may have contributed to the loss of NPP response to ST. Our results thus challenge the 'warmer spring-bigger sink' mechanism. Article in Journal/Newspaper Barrow Alaska Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB Nature Climate Change 7 5 359 363 |
institution |
Open Polar |
collection |
Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB |
op_collection_id |
ftuabarcelonapb |
language |
English |
topic |
Biogeochemistry Ecological modelling |
spellingShingle |
Biogeochemistry Ecological modelling Piao, Shilong Wang, Tao Liu, Zhuou Peng, Shushi Ciais, Philippe Huang, Mengtian Ahlstrom, Anders Burkhart, John F. Chevallier, Frédéric Janssens, Ivan Jeong, Su-Jong Lin, Xin Mao, Jiafu Miller, John Mohammat, Anwar Myneni, Ranga B. Peñuelas, Josep Shi, Xiaoying Stohl, Andreas Yao, Yitong Zhu, Zaichun Weakening temperature control on the interannual variations of spring carbon uptake across northern lands |
topic_facet |
Biogeochemistry Ecological modelling |
description |
Imbalance-P paper contact with Josep Peñuelas: j.penuelas@uab.cat Ongoing spring warming allows the growing season to begin earlier, enhancing carbon uptake in northern ecosystems1, 2, 3. Here we use 34 years of atmospheric CO2 concentration measurements at Barrow, Alaska (BRW, 71° N) to show that the interannual relationship between spring temperature and carbon uptake has recently shifted. We use two indicators: the spring zero-crossing date of atmospheric CO2 (SZC) and the magnitude of CO2 drawdown between May and June (SCC). The previously reported strong correlation between SZC, SCC and spring land temperature (ST) was found in the first 17 years of measurements, but disappeared in the last 17 years. As a result, the sensitivity of both SZC and SCC to warming decreased. Simulations with an atmospheric transport model4 coupled to a terrestrial ecosystem model5 suggest that the weakened interannual correlation of SZC and SCC with ST in the last 17 years is attributable to the declining temperature response of spring net primary productivity (NPP) rather than to changes in heterotrophic respiration or in atmospheric transport patterns. Reduced chilling during dormancy and emerging light limitation are possible mechanisms that may have contributed to the loss of NPP response to ST. Our results thus challenge the 'warmer spring-bigger sink' mechanism. |
format |
Article in Journal/Newspaper |
author |
Piao, Shilong Wang, Tao Liu, Zhuou Peng, Shushi Ciais, Philippe Huang, Mengtian Ahlstrom, Anders Burkhart, John F. Chevallier, Frédéric Janssens, Ivan Jeong, Su-Jong Lin, Xin Mao, Jiafu Miller, John Mohammat, Anwar Myneni, Ranga B. Peñuelas, Josep Shi, Xiaoying Stohl, Andreas Yao, Yitong Zhu, Zaichun |
author_facet |
Piao, Shilong Wang, Tao Liu, Zhuou Peng, Shushi Ciais, Philippe Huang, Mengtian Ahlstrom, Anders Burkhart, John F. Chevallier, Frédéric Janssens, Ivan Jeong, Su-Jong Lin, Xin Mao, Jiafu Miller, John Mohammat, Anwar Myneni, Ranga B. Peñuelas, Josep Shi, Xiaoying Stohl, Andreas Yao, Yitong Zhu, Zaichun |
author_sort |
Piao, Shilong |
title |
Weakening temperature control on the interannual variations of spring carbon uptake across northern lands |
title_short |
Weakening temperature control on the interannual variations of spring carbon uptake across northern lands |
title_full |
Weakening temperature control on the interannual variations of spring carbon uptake across northern lands |
title_fullStr |
Weakening temperature control on the interannual variations of spring carbon uptake across northern lands |
title_full_unstemmed |
Weakening temperature control on the interannual variations of spring carbon uptake across northern lands |
title_sort |
weakening temperature control on the interannual variations of spring carbon uptake across northern lands |
publishDate |
2017 |
url |
https://ddd.uab.cat/record/181062 |
genre |
Barrow Alaska |
genre_facet |
Barrow Alaska |
op_relation |
European Commission 610028 Nature climate change Vol. 7 (2017), p. 359-363 https://ddd.uab.cat/record/181062 urn:10.1038/nclimate3277 urn:oai:ddd.uab.cat:181062 urn:scopus_id:85018782649 urn:wos_id:000400373500017 urn:altmetric_id:19519404 urn:oai:egreta.uab.cat:publications/21b9e5e5-10d7-4d91-bbc0-0ac154fc1547 |
op_rights |
open access Tots els drets reservats. https://rightsstatements.org/vocab/InC/1.0/ |
container_title |
Nature Climate Change |
container_volume |
7 |
container_issue |
5 |
container_start_page |
359 |
op_container_end_page |
363 |
_version_ |
1781058415785672704 |