An assessment of land-atmosphere interactions over South America using satellites, reanalysis and two global climate models
In South America, land–atmosphere interactions have an important impact on climate, particularly the regional hydrological cycle, but detailed evaluation of these processes in global climate models has been limited. Focusing on the satellite-era period of 2003–14, we assess land–atmosphere interacti...
Published in: | Journal of Hydrometeorology |
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Language: | English |
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2021
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Online Access: | https://research.manchester.ac.uk/en/publications/9c029c9a-3423-401c-ac3b-a46b469462d7 https://doi.org/10.1175/JHM-D-20-0132.1 https://pure.manchester.ac.uk/ws/files/190140717/manuscript_Baker_et_al_L_A_study_REVISED_22January2021_accepted.pdf |
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ftumanchesterpub:oai:pure.atira.dk:publications/9c029c9a-3423-401c-ac3b-a46b469462d7 2023-11-12T04:22:39+01:00 An assessment of land-atmosphere interactions over South America using satellites, reanalysis and two global climate models Baker, Jessica C.A. Souza, Dayana Castilho de Kubota, Paulo Buermann, Wolfgang Coelho, Caio A.S. Andrews, Martin B. Gloor, Manuel Garcia-Carreras, Luis Figueroa, Silvio N. Spracklen, Dominick V. 2021-02-11 application/pdf https://research.manchester.ac.uk/en/publications/9c029c9a-3423-401c-ac3b-a46b469462d7 https://doi.org/10.1175/JHM-D-20-0132.1 https://pure.manchester.ac.uk/ws/files/190140717/manuscript_Baker_et_al_L_A_study_REVISED_22January2021_accepted.pdf eng eng info:eu-repo/semantics/openAccess Baker , J C A , Souza , D C D , Kubota , P , Buermann , W , Coelho , C A S , Andrews , M B , Gloor , M , Garcia-Carreras , L , Figueroa , S N & Spracklen , D V 2021 , ' An assessment of land-atmosphere interactions over South America using satellites, reanalysis and two global climate models ' , Journal of Hydrometeorology , vol. 22 , no. 4 , pp. 905-922 . https://doi.org/10.1175/JHM-D-20-0132.1 Amazon region Atmosphere-land interaction Feedback Land surface Model evaluation/performance Vegetation-atmosphere interactions ResearchInstitutes_Networks_Beacons/MERI Manchester Environmental Research Institute article 2021 ftumanchesterpub https://doi.org/10.1175/JHM-D-20-0132.1 2023-10-30T09:18:30Z In South America, land–atmosphere interactions have an important impact on climate, particularly the regional hydrological cycle, but detailed evaluation of these processes in global climate models has been limited. Focusing on the satellite-era period of 2003–14, we assess land–atmosphere interactions on annual to seasonal time scales over South America in satellite products, a novel reanalysis (ERA5-Land), and two global climate models: the Brazilian Global Atmospheric Model version 1.2 (BAM-1.2) and the U.K. Hadley Centre Global Environment Model version 3 (HadGEM3). We identify key features of South American land–atmosphere interactions represented in satellite and model datasets, including seasonal variation in coupling strength, large-scale spatial variation in the sensitivity of evapotranspi-ration to surface moisture, and a dipole in evaporative regime across the continent. Differences between products are also identified, with ERA5-Land, HadGEM3, and BAM-1.2 showing opposite interactions to satellites over parts of the Amazon and the Cerrado and stronger land–atmosphere coupling along the North Atlantic coast. Where models and satellites disagree on the strength and direction of land–atmosphere interactions, precipitation biases and misrepresentation of processes controlling surface soil moisture are implicated as likely drivers. These results show where improvement of model processes could reduce uncertainty in the modeled climate response to land-use change, and highlight where model biases could unrealistically amplify drying or wetting trends in future climate projections. Finally, HadGEM3 and BAM-1.2 are consistent with the median response of an ensemble of nine CMIP6 models, showing they are broadly representative of the latest generation of climate models. Article in Journal/Newspaper North Atlantic The University of Manchester: Research Explorer Journal of Hydrometeorology 22 4 905 922 |
institution |
Open Polar |
collection |
The University of Manchester: Research Explorer |
op_collection_id |
ftumanchesterpub |
language |
English |
topic |
Amazon region Atmosphere-land interaction Feedback Land surface Model evaluation/performance Vegetation-atmosphere interactions ResearchInstitutes_Networks_Beacons/MERI Manchester Environmental Research Institute |
spellingShingle |
Amazon region Atmosphere-land interaction Feedback Land surface Model evaluation/performance Vegetation-atmosphere interactions ResearchInstitutes_Networks_Beacons/MERI Manchester Environmental Research Institute Baker, Jessica C.A. Souza, Dayana Castilho de Kubota, Paulo Buermann, Wolfgang Coelho, Caio A.S. Andrews, Martin B. Gloor, Manuel Garcia-Carreras, Luis Figueroa, Silvio N. Spracklen, Dominick V. An assessment of land-atmosphere interactions over South America using satellites, reanalysis and two global climate models |
topic_facet |
Amazon region Atmosphere-land interaction Feedback Land surface Model evaluation/performance Vegetation-atmosphere interactions ResearchInstitutes_Networks_Beacons/MERI Manchester Environmental Research Institute |
description |
In South America, land–atmosphere interactions have an important impact on climate, particularly the regional hydrological cycle, but detailed evaluation of these processes in global climate models has been limited. Focusing on the satellite-era period of 2003–14, we assess land–atmosphere interactions on annual to seasonal time scales over South America in satellite products, a novel reanalysis (ERA5-Land), and two global climate models: the Brazilian Global Atmospheric Model version 1.2 (BAM-1.2) and the U.K. Hadley Centre Global Environment Model version 3 (HadGEM3). We identify key features of South American land–atmosphere interactions represented in satellite and model datasets, including seasonal variation in coupling strength, large-scale spatial variation in the sensitivity of evapotranspi-ration to surface moisture, and a dipole in evaporative regime across the continent. Differences between products are also identified, with ERA5-Land, HadGEM3, and BAM-1.2 showing opposite interactions to satellites over parts of the Amazon and the Cerrado and stronger land–atmosphere coupling along the North Atlantic coast. Where models and satellites disagree on the strength and direction of land–atmosphere interactions, precipitation biases and misrepresentation of processes controlling surface soil moisture are implicated as likely drivers. These results show where improvement of model processes could reduce uncertainty in the modeled climate response to land-use change, and highlight where model biases could unrealistically amplify drying or wetting trends in future climate projections. Finally, HadGEM3 and BAM-1.2 are consistent with the median response of an ensemble of nine CMIP6 models, showing they are broadly representative of the latest generation of climate models. |
format |
Article in Journal/Newspaper |
author |
Baker, Jessica C.A. Souza, Dayana Castilho de Kubota, Paulo Buermann, Wolfgang Coelho, Caio A.S. Andrews, Martin B. Gloor, Manuel Garcia-Carreras, Luis Figueroa, Silvio N. Spracklen, Dominick V. |
author_facet |
Baker, Jessica C.A. Souza, Dayana Castilho de Kubota, Paulo Buermann, Wolfgang Coelho, Caio A.S. Andrews, Martin B. Gloor, Manuel Garcia-Carreras, Luis Figueroa, Silvio N. Spracklen, Dominick V. |
author_sort |
Baker, Jessica C.A. |
title |
An assessment of land-atmosphere interactions over South America using satellites, reanalysis and two global climate models |
title_short |
An assessment of land-atmosphere interactions over South America using satellites, reanalysis and two global climate models |
title_full |
An assessment of land-atmosphere interactions over South America using satellites, reanalysis and two global climate models |
title_fullStr |
An assessment of land-atmosphere interactions over South America using satellites, reanalysis and two global climate models |
title_full_unstemmed |
An assessment of land-atmosphere interactions over South America using satellites, reanalysis and two global climate models |
title_sort |
assessment of land-atmosphere interactions over south america using satellites, reanalysis and two global climate models |
publishDate |
2021 |
url |
https://research.manchester.ac.uk/en/publications/9c029c9a-3423-401c-ac3b-a46b469462d7 https://doi.org/10.1175/JHM-D-20-0132.1 https://pure.manchester.ac.uk/ws/files/190140717/manuscript_Baker_et_al_L_A_study_REVISED_22January2021_accepted.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Baker , J C A , Souza , D C D , Kubota , P , Buermann , W , Coelho , C A S , Andrews , M B , Gloor , M , Garcia-Carreras , L , Figueroa , S N & Spracklen , D V 2021 , ' An assessment of land-atmosphere interactions over South America using satellites, reanalysis and two global climate models ' , Journal of Hydrometeorology , vol. 22 , no. 4 , pp. 905-922 . https://doi.org/10.1175/JHM-D-20-0132.1 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1175/JHM-D-20-0132.1 |
container_title |
Journal of Hydrometeorology |
container_volume |
22 |
container_issue |
4 |
container_start_page |
905 |
op_container_end_page |
922 |
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1782337634377400320 |