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Contrasting Regional Carbon Cycle Responses to Seasonal Climate Anomalies Across the East‐West Divide of Temperate North America

Across temperate North America, interannual variability (IAV) in gross primary production (GPP) and net ecosystem exchange (NEE) and their relationship with environmental drivers are poorly understood. Here, we examine IAV in GPP and NEE and their relationship to environmental drivers using two stat...

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Autores principales: Byrne, B., Liu, J., Bloom, A. A., Bowman, K. W., Butterfield, Z., Joiner, J., Keenan, T. F., Keppel‐Aleks, G., Parazoo, N. C., Yin, Y.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7685151/
https://www.ncbi.nlm.nih.gov/pubmed/33281280
http://dx.doi.org/10.1029/2020GB006598
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author Byrne, B.
Liu, J.
Bloom, A. A.
Bowman, K. W.
Butterfield, Z.
Joiner, J.
Keenan, T. F.
Keppel‐Aleks, G.
Parazoo, N. C.
Yin, Y.
author_facet Byrne, B.
Liu, J.
Bloom, A. A.
Bowman, K. W.
Butterfield, Z.
Joiner, J.
Keenan, T. F.
Keppel‐Aleks, G.
Parazoo, N. C.
Yin, Y.
author_sort Byrne, B.
collection PubMed
description Across temperate North America, interannual variability (IAV) in gross primary production (GPP) and net ecosystem exchange (NEE) and their relationship with environmental drivers are poorly understood. Here, we examine IAV in GPP and NEE and their relationship to environmental drivers using two state‐of‐the‐science flux products: NEE constrained by surface and space‐based atmospheric CO(2) measurements over 2010–2015 and satellite up‐scaled GPP from FluxSat over 2001–2017. We show that the arid western half of temperate North America provides a larger contribution to IAV in GPP (104% of east) and NEE (127% of east) than the eastern half, in spite of smaller magnitude of annual mean GPP and NEE. This occurs because anomalies in western ecosystems are temporally coherent across the growing season leading to an amplification of GPP and NEE. In contrast, IAV in GPP and NEE in eastern ecosystems is dominated by seasonal compensation effects, associated with opposite responses to temperature anomalies in spring and summer. Terrestrial biosphere models in the MsTMIP ensemble generally capture these differences between eastern and western temperate North America, although there is considerable spread between models.
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spelling pubmed-76851512020-12-03 Contrasting Regional Carbon Cycle Responses to Seasonal Climate Anomalies Across the East‐West Divide of Temperate North America Byrne, B. Liu, J. Bloom, A. A. Bowman, K. W. Butterfield, Z. Joiner, J. Keenan, T. F. Keppel‐Aleks, G. Parazoo, N. C. Yin, Y. Global Biogeochem Cycles Research Articles Across temperate North America, interannual variability (IAV) in gross primary production (GPP) and net ecosystem exchange (NEE) and their relationship with environmental drivers are poorly understood. Here, we examine IAV in GPP and NEE and their relationship to environmental drivers using two state‐of‐the‐science flux products: NEE constrained by surface and space‐based atmospheric CO(2) measurements over 2010–2015 and satellite up‐scaled GPP from FluxSat over 2001–2017. We show that the arid western half of temperate North America provides a larger contribution to IAV in GPP (104% of east) and NEE (127% of east) than the eastern half, in spite of smaller magnitude of annual mean GPP and NEE. This occurs because anomalies in western ecosystems are temporally coherent across the growing season leading to an amplification of GPP and NEE. In contrast, IAV in GPP and NEE in eastern ecosystems is dominated by seasonal compensation effects, associated with opposite responses to temperature anomalies in spring and summer. Terrestrial biosphere models in the MsTMIP ensemble generally capture these differences between eastern and western temperate North America, although there is considerable spread between models. John Wiley and Sons Inc. 2020-11-13 2020-11 /pmc/articles/PMC7685151/ /pubmed/33281280 http://dx.doi.org/10.1029/2020GB006598 Text en ©2020. The Authors. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Articles
Byrne, B.
Liu, J.
Bloom, A. A.
Bowman, K. W.
Butterfield, Z.
Joiner, J.
Keenan, T. F.
Keppel‐Aleks, G.
Parazoo, N. C.
Yin, Y.
Contrasting Regional Carbon Cycle Responses to Seasonal Climate Anomalies Across the East‐West Divide of Temperate North America
title Contrasting Regional Carbon Cycle Responses to Seasonal Climate Anomalies Across the East‐West Divide of Temperate North America
title_full Contrasting Regional Carbon Cycle Responses to Seasonal Climate Anomalies Across the East‐West Divide of Temperate North America
title_fullStr Contrasting Regional Carbon Cycle Responses to Seasonal Climate Anomalies Across the East‐West Divide of Temperate North America
title_full_unstemmed Contrasting Regional Carbon Cycle Responses to Seasonal Climate Anomalies Across the East‐West Divide of Temperate North America
title_short Contrasting Regional Carbon Cycle Responses to Seasonal Climate Anomalies Across the East‐West Divide of Temperate North America
title_sort contrasting regional carbon cycle responses to seasonal climate anomalies across the east‐west divide of temperate north america
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7685151/
https://www.ncbi.nlm.nih.gov/pubmed/33281280
http://dx.doi.org/10.1029/2020GB006598
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