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Periodic fluctuation of reference evapotranspiration during the past five decades: Does Evaporation Paradox really exist in China?

Evidence that the pan evaporation or reference evapotranspiration (ET(0)) as the indicator of atmospheric evaporation capability have decreased along with the continuous increase in temperature over the past decades (coined as “evaporation paradox”) has been reported worldwide. Here, we provide a na...

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Autores principales: Xing, Wanqiu, Wang, Weiguang, Shao, Quanxi, Yu, Zhongbo, Yang, Tao, Fu, Jianyu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5172234/
https://www.ncbi.nlm.nih.gov/pubmed/27991576
http://dx.doi.org/10.1038/srep39503
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author Xing, Wanqiu
Wang, Weiguang
Shao, Quanxi
Yu, Zhongbo
Yang, Tao
Fu, Jianyu
author_facet Xing, Wanqiu
Wang, Weiguang
Shao, Quanxi
Yu, Zhongbo
Yang, Tao
Fu, Jianyu
author_sort Xing, Wanqiu
collection PubMed
description Evidence that the pan evaporation or reference evapotranspiration (ET(0)) as the indicator of atmospheric evaporation capability have decreased along with the continuous increase in temperature over the past decades (coined as “evaporation paradox”) has been reported worldwide. Here, we provide a nationwide investigation of spatiotemporal change of ET(0) using meteorological data from 602 stations with the updated data (1961–2011). In addition, we explore the trigger mechanism by quantitative assessment on the contribution of climatic factors to ET(0) change based on a differential equation method. In despite of different shift points regionally, our results suggest that the ET(0) generally present decadal variations rather than monotonic response to climate change reported in previous studies. The significant decrease in net radiation dominate the decrease in ET(0) before early 1990s in southern regions, while observed near-surface wind speed is the primary contributor to the variations of ET(0) for the rest regions during the same periods. The enhancements of atmospheric evaporation capability after early 1990s are driven primarily by recent relative humidity limitation in China. From a continental scale view, as highly correlating with to Pacific Decadal Oscillation, the shift behaviors of ET(0) is likely an episodic phenomenon of the ocean-atmosphere interaction in earth.
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spelling pubmed-51722342016-12-28 Periodic fluctuation of reference evapotranspiration during the past five decades: Does Evaporation Paradox really exist in China? Xing, Wanqiu Wang, Weiguang Shao, Quanxi Yu, Zhongbo Yang, Tao Fu, Jianyu Sci Rep Article Evidence that the pan evaporation or reference evapotranspiration (ET(0)) as the indicator of atmospheric evaporation capability have decreased along with the continuous increase in temperature over the past decades (coined as “evaporation paradox”) has been reported worldwide. Here, we provide a nationwide investigation of spatiotemporal change of ET(0) using meteorological data from 602 stations with the updated data (1961–2011). In addition, we explore the trigger mechanism by quantitative assessment on the contribution of climatic factors to ET(0) change based on a differential equation method. In despite of different shift points regionally, our results suggest that the ET(0) generally present decadal variations rather than monotonic response to climate change reported in previous studies. The significant decrease in net radiation dominate the decrease in ET(0) before early 1990s in southern regions, while observed near-surface wind speed is the primary contributor to the variations of ET(0) for the rest regions during the same periods. The enhancements of atmospheric evaporation capability after early 1990s are driven primarily by recent relative humidity limitation in China. From a continental scale view, as highly correlating with to Pacific Decadal Oscillation, the shift behaviors of ET(0) is likely an episodic phenomenon of the ocean-atmosphere interaction in earth. Nature Publishing Group 2016-12-19 /pmc/articles/PMC5172234/ /pubmed/27991576 http://dx.doi.org/10.1038/srep39503 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ 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 http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Xing, Wanqiu
Wang, Weiguang
Shao, Quanxi
Yu, Zhongbo
Yang, Tao
Fu, Jianyu
Periodic fluctuation of reference evapotranspiration during the past five decades: Does Evaporation Paradox really exist in China?
title Periodic fluctuation of reference evapotranspiration during the past five decades: Does Evaporation Paradox really exist in China?
title_full Periodic fluctuation of reference evapotranspiration during the past five decades: Does Evaporation Paradox really exist in China?
title_fullStr Periodic fluctuation of reference evapotranspiration during the past five decades: Does Evaporation Paradox really exist in China?
title_full_unstemmed Periodic fluctuation of reference evapotranspiration during the past five decades: Does Evaporation Paradox really exist in China?
title_short Periodic fluctuation of reference evapotranspiration during the past five decades: Does Evaporation Paradox really exist in China?
title_sort periodic fluctuation of reference evapotranspiration during the past five decades: does evaporation paradox really exist in china?
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5172234/
https://www.ncbi.nlm.nih.gov/pubmed/27991576
http://dx.doi.org/10.1038/srep39503
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