Decreasing Influence of Summer Snow Cover Over the Western Tibetan Plateau on East Asian Precipitation Under Global Warming

In recent years, some studies emphasized the influence of western Tibetan Plateau summer snow on the East Asian summer precipitation. With the temperature rise in the past decades, the snow cover over the western Tibetan Plateau in summer has significantly decreased. This raises the question whether...

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Autores principales:	Zhibiao Wang, Renguang Wu, Zhang Chen, Lihua Zhu, Kai Yang, Kui Liu, Yiya Yang
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	tibetan plateau summer snow cover east asian summer precipitation global warming northeast indian precipitation weakened influence Science Q
Acceso en línea:	https://doaj.org/article/0b465200af7c4134b3c35bec6d9c1f83
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spelling	oai:doaj.org-article:0b465200af7c4134b3c35bec6d9c1f832021-12-01T02:31:48ZDecreasing Influence of Summer Snow Cover Over the Western Tibetan Plateau on East Asian Precipitation Under Global Warming2296-646310.3389/feart.2021.787971https://doaj.org/article/0b465200af7c4134b3c35bec6d9c1f832021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/feart.2021.787971/fullhttps://doaj.org/toc/2296-6463In recent years, some studies emphasized the influence of western Tibetan Plateau summer snow on the East Asian summer precipitation. With the temperature rise in the past decades, the snow cover over the western Tibetan Plateau in summer has significantly decreased. This raises the question whether the impact of the Tibetan Plateau snow has changed. The present study identifies a prominent change in the influence of the western Tibetan Plateau snow cover on the East Asian summer precipitation. Before the early 2000’s, positive precipitation anomalies extend from the southeastern Tibetan Plateau through the Yangtze River to Japan and Korea and negative anomalies cover southeast China corresponding to more Tibetan Plateau snow cover. After the early 2000’s, with the reduction of snow cover variability, below-normal and above-normal summer precipitation occurs over northern China-Mongolia and northeast Asia, respectively, corresponding to more Tibetan Plateau snow cover. The change in the influence of the Tibetan Plateau snow on the East Asian summer precipitation is associated with an obvious change in the atmospheric circulation anomaly pattern. Before the early 2000’s, the wind anomalies display a south-north contrast pattern with anomalous convergence along the Yangtze River. After the early 2000’s, an anomalous cyclone occupies Northeast China with anomalous southerlies and northerlies over northeast Asia and northern China, respectively. The Tibetan Plateau snow cover variation after the early 2000’s is associated with the northeast Indian summer precipitation. The model experiments confirm that the weakened influence of summer western Tibetan Plateau snow cover on the East Asian atmospheric circulation and precipitation with the reduced snow cover anomalies.Zhibiao WangRenguang WuRenguang WuZhang ChenLihua ZhuKai YangKui LiuYiya YangFrontiers Media S.A.articletibetan plateau summer snow covereast asian summer precipitationglobal warmingnortheast indian precipitationweakened influenceScienceQENFrontiers in Earth Science, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	tibetan plateau summer snow cover east asian summer precipitation global warming northeast indian precipitation weakened influence Science Q
spellingShingle	tibetan plateau summer snow cover east asian summer precipitation global warming northeast indian precipitation weakened influence Science Q Zhibiao Wang Renguang Wu Renguang Wu Zhang Chen Lihua Zhu Kai Yang Kui Liu Yiya Yang Decreasing Influence of Summer Snow Cover Over the Western Tibetan Plateau on East Asian Precipitation Under Global Warming
description	In recent years, some studies emphasized the influence of western Tibetan Plateau summer snow on the East Asian summer precipitation. With the temperature rise in the past decades, the snow cover over the western Tibetan Plateau in summer has significantly decreased. This raises the question whether the impact of the Tibetan Plateau snow has changed. The present study identifies a prominent change in the influence of the western Tibetan Plateau snow cover on the East Asian summer precipitation. Before the early 2000’s, positive precipitation anomalies extend from the southeastern Tibetan Plateau through the Yangtze River to Japan and Korea and negative anomalies cover southeast China corresponding to more Tibetan Plateau snow cover. After the early 2000’s, with the reduction of snow cover variability, below-normal and above-normal summer precipitation occurs over northern China-Mongolia and northeast Asia, respectively, corresponding to more Tibetan Plateau snow cover. The change in the influence of the Tibetan Plateau snow on the East Asian summer precipitation is associated with an obvious change in the atmospheric circulation anomaly pattern. Before the early 2000’s, the wind anomalies display a south-north contrast pattern with anomalous convergence along the Yangtze River. After the early 2000’s, an anomalous cyclone occupies Northeast China with anomalous southerlies and northerlies over northeast Asia and northern China, respectively. The Tibetan Plateau snow cover variation after the early 2000’s is associated with the northeast Indian summer precipitation. The model experiments confirm that the weakened influence of summer western Tibetan Plateau snow cover on the East Asian atmospheric circulation and precipitation with the reduced snow cover anomalies.
format	article
author	Zhibiao Wang Renguang Wu Renguang Wu Zhang Chen Lihua Zhu Kai Yang Kui Liu Yiya Yang
author_facet	Zhibiao Wang Renguang Wu Renguang Wu Zhang Chen Lihua Zhu Kai Yang Kui Liu Yiya Yang
author_sort	Zhibiao Wang
title	Decreasing Influence of Summer Snow Cover Over the Western Tibetan Plateau on East Asian Precipitation Under Global Warming
title_short	Decreasing Influence of Summer Snow Cover Over the Western Tibetan Plateau on East Asian Precipitation Under Global Warming
title_full	Decreasing Influence of Summer Snow Cover Over the Western Tibetan Plateau on East Asian Precipitation Under Global Warming
title_fullStr	Decreasing Influence of Summer Snow Cover Over the Western Tibetan Plateau on East Asian Precipitation Under Global Warming
title_full_unstemmed	Decreasing Influence of Summer Snow Cover Over the Western Tibetan Plateau on East Asian Precipitation Under Global Warming
title_sort	decreasing influence of summer snow cover over the western tibetan plateau on east asian precipitation under global warming
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/0b465200af7c4134b3c35bec6d9c1f83
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Decreasing Influence of Summer Snow Cover Over the Western Tibetan Plateau on East Asian Precipitation Under Global Warming

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