Percolation Phase Transition of Surface Air Temperature Networks: A new test bed for El Niño/La Niña simulations

Abstract In this work, we studied the air-sea interaction over the tropical central eastern Pacific from a new perspective, climate network. The surface air temperatures over the tropical Pacific were constructed as a network, and the nodes within this network were linked if they have a similar temp...

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Autores principales:	Lijuan Hua, Zhenghui Lu, Naiming Yuan, Lin Chen, Yongqiang Yu, Lu Wang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b7b0c491da634f1ea4020a886294f384
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spelling	oai:doaj.org-article:b7b0c491da634f1ea4020a886294f3842021-12-02T16:06:29ZPercolation Phase Transition of Surface Air Temperature Networks: A new test bed for El Niño/La Niña simulations10.1038/s41598-017-08767-42045-2322https://doaj.org/article/b7b0c491da634f1ea4020a886294f3842017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08767-4https://doaj.org/toc/2045-2322Abstract In this work, we studied the air-sea interaction over the tropical central eastern Pacific from a new perspective, climate network. The surface air temperatures over the tropical Pacific were constructed as a network, and the nodes within this network were linked if they have a similar temporal varying pattern. Using three different reanalysis datasets, we verified the percolation phase transition. That is, when the influences of El Niño/La Niña are strong enough to isolate more than 48% of the nodes, the network may abruptly be divided into many small pieces, indicating a change of the network state. This phenomenon was reproduced successfully by a coupled general circulation model, Flexible Global Ocean-Atmosphere-Land System Model Spectral Version 2, but another model, Flexible Global Ocean-Atmosphere-Land System Model Grid-point Version 2, failed. As both models have the same oceanic component, but are with different atmospheric components, the improperly used atmospheric component should be responsible for the missing of the percolation phase transition. Considering that this new phenomenon is only recently noticed, current state-of-the-art models may ignore this process and induce unrealistic simulations. Accordingly, percolation phase transition is proposed as a new test bed, which deserves more attention in the future.Lijuan HuaZhenghui LuNaiming YuanLin ChenYongqiang YuLu WangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lijuan Hua Zhenghui Lu Naiming Yuan Lin Chen Yongqiang Yu Lu Wang Percolation Phase Transition of Surface Air Temperature Networks: A new test bed for El Niño/La Niña simulations
description	Abstract In this work, we studied the air-sea interaction over the tropical central eastern Pacific from a new perspective, climate network. The surface air temperatures over the tropical Pacific were constructed as a network, and the nodes within this network were linked if they have a similar temporal varying pattern. Using three different reanalysis datasets, we verified the percolation phase transition. That is, when the influences of El Niño/La Niña are strong enough to isolate more than 48% of the nodes, the network may abruptly be divided into many small pieces, indicating a change of the network state. This phenomenon was reproduced successfully by a coupled general circulation model, Flexible Global Ocean-Atmosphere-Land System Model Spectral Version 2, but another model, Flexible Global Ocean-Atmosphere-Land System Model Grid-point Version 2, failed. As both models have the same oceanic component, but are with different atmospheric components, the improperly used atmospheric component should be responsible for the missing of the percolation phase transition. Considering that this new phenomenon is only recently noticed, current state-of-the-art models may ignore this process and induce unrealistic simulations. Accordingly, percolation phase transition is proposed as a new test bed, which deserves more attention in the future.
format	article
author	Lijuan Hua Zhenghui Lu Naiming Yuan Lin Chen Yongqiang Yu Lu Wang
author_facet	Lijuan Hua Zhenghui Lu Naiming Yuan Lin Chen Yongqiang Yu Lu Wang
author_sort	Lijuan Hua
title	Percolation Phase Transition of Surface Air Temperature Networks: A new test bed for El Niño/La Niña simulations
title_short	Percolation Phase Transition of Surface Air Temperature Networks: A new test bed for El Niño/La Niña simulations
title_full	Percolation Phase Transition of Surface Air Temperature Networks: A new test bed for El Niño/La Niña simulations
title_fullStr	Percolation Phase Transition of Surface Air Temperature Networks: A new test bed for El Niño/La Niña simulations
title_full_unstemmed	Percolation Phase Transition of Surface Air Temperature Networks: A new test bed for El Niño/La Niña simulations
title_sort	percolation phase transition of surface air temperature networks: a new test bed for el niño/la niña simulations
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/b7b0c491da634f1ea4020a886294f384
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Percolation Phase Transition of Surface Air Temperature Networks: A new test bed for El Niño/La Niña simulations

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