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Earth’s changing global atmospheric energy cycle in response to climate change

Pan, Yefeng and Li, Liming and Jiang, Xun and Li, Gan and Zhang, Wentao and Wang, Xinyue and Ingersoll, Andrew P. (2017) Earth’s changing global atmospheric energy cycle in response to climate change. Nature Communications, 8 . Art. No. 14367. ISSN 2041-1723. PMCID PMC5286208. doi:10.1038/ncomms14367.

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The Lorenz energy cycle is widely used to investigate atmospheres and climates on planets. However, the long-term temporal variations of such an energy cycle have not yet been explored. Here we use three independent meteorological data sets from the modern satellite era, to examine the temporal characteristics of the Lorenz energy cycle of Earth’s global atmosphere in response to climate change. The total mechanical energy of the global atmosphere basically remains constant with time, but the global-average eddy energies show significant positive trends. The spatial investigations suggest that these positive trends are concentrated in the Southern Hemisphere. Significant positive trends are also found in the conversion, generation and dissipation rates of energies. The positive trends in the dissipation rates of kinetic energies suggest that the efficiency of the global atmosphere as a heat engine increased during the modern satellite era.

Item Type:Article
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URLURL TypeDescription CentralArticle
Li, Liming0000-0002-5257-9849
Jiang, Xun0000-0001-8932-3807
Ingersoll, Andrew P.0000-0002-2035-9198
Additional Information:© 2017 The Author(s). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit Received 11 Aug 2016; Accepted 21 Dec 2016; Published 24 Jan 2017. We gratefully acknowledge the National Centers of Environmental Prediction and the Department of Energy for preparing the NCEP-DOE R2 data set, the European Centre for Medium-Range Weather Forecasts for preparing the ERA-Interim data set and the NASA for preparing the MERRA-2 data set. We also acknowledge the support from the NASA Energy and Water cycle Study (NEWS) and Planetary Data Archiving, Restoration and Tools (PDART) programmes. We finally thank three anonymous reviewers for providing constructive suggestions and Dr Mimi Gerstell for improving English of the manuscript. Author Contributions: Y.P. and L.L. performed the computations/analyses of the Lorenz energy cycle and wrote the manuscript. X.J. processed the data sets of NCEP-DOE R2/ERA-Interim/MERRA-2 and contributed to the data analysis. G.L., W.Z., X.W. and A.P.I. contributed to the data analysis. All authors discussed the results and commented on the manuscript. The authors declare no competing financial interests.
Group:Astronomy Department
PubMed Central ID:PMC5286208
Record Number:CaltechAUTHORS:20170130-082859958
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Official Citation:Earth’s changing global atmospheric energy cycle in response to climate change. Yefeng Pan, Liming Li, Xun Jiang, Gan Li, Wentao Zhang, Xinyue Wang & Andrew P. Ingersoll. Nature Communications 8, Article number: 14367 (2017) doi:10.1038/ncomms14367
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:73811
Deposited By: Tony Diaz
Deposited On:30 Jan 2017 20:08
Last Modified:11 Nov 2021 05:22

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