Record-breaking Meiyu rainfall around Yangtze River in 2020 regulated by the subseasonal phase transition of North Atlantic Oscillation

Liu, Boqi; Yan, Yuhan; Zhu, Congwen; Ma, Shuangmei; Li, Jianying

doi:10.1002/essoar.10504083.1

Cited by 16 publications

(26 citation statements)

References 6 publications

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“…The Tibet Plateau has a plateau climate with dry and cold weather all year round (X. Li et al., 2020; Zhao et al., 2017), where herbaceous marshes, marsh meadows, and inland salt marshes are the main marsh types. The middle and lower reaches of the Yangtze River area have a subtropical monsoon climate with abundant rainfall (Liu et al., 2020; Wan et al., 2020). In this study, we selected and analyzed six types of marshes, namely herbaceous marshes, marsh meadows, inland salt marshes, seasonal saltwater marshes, forest swamp, and bush swamp.…”

Section: Methodsmentioning

confidence: 99%

Spatiotemporal Change of Marsh Vegetation and Its Response to Climate Change in China From 2000 to 2019

et al. 2021

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China has the third largest area of marshes in the world. Understanding the change of marsh, vegetation and its response to climate change in China is important for the protection of wetland ecosystem. Based on the climate and normalized difference vegetation index (NDVI) data, we investigated the spatiotemporal variation in vegetation and its response to climate change for different types of marshes in China. The results indicated that growing season NDVI increased significantly (0.02/decade, P < 0.01) over the whole marshes of China from 2000 to 2019. The increased precipitation and minimum temperature during the growing season could promote the growth of marsh vegetation over China. This study found for the first time that the increase of temperature during the day and at night had asymmetric effects on vegetation growth in marshes of China, and the positive effect of night warming was more significant. Spatially, increasing growing season precipitation was beneficial to the vegetation growth of herbaceous marshes, marsh meadows, inland salt marshes, and seasonal saltwater marshes in eastern Inner Mongolia. Increased growing season minimum temperature could greatly promote the vegetation growth of marsh meadows, herbaceous marshes, inland salt marshes, forest swamp, and bush swamp in cold and high‐altitude regions of Northern Northeast China and the Tibet Plateau. In the context of global climate change, more attention should be paid to the different responses of vegetation to climate change for different marsh types, especially when we use the model to simulate the impact of climate change on vegetation in different marsh regions of China.

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Section: Methodsmentioning

confidence: 99%

Spatiotemporal Change of Marsh Vegetation and Its Response to Climate Change in China From 2000 to 2019

et al. 2021

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“…Liu et al. (2020) found that the phase transition of the North Atlantic Oscillation (NAO) influenced the 2020 Meiyu‐Baiu front, which also implies an important role of mid‐to‐high latitude atmospheric circulation. Previous studies suggested that the mid‐high latitude atmospheric circulation, especially Eurasian atmospheric blocking, is vital in prolonging the Meiyu‐Baiu season and increasing its rainfall intensity and accumulated amount (e.g., Chen et al., 2007; Chen and Zhai, 2014; Li et al., 2001; Li et al., 2018; Ninomiya & Shibagaki, 2007; Park & Ahn, 2014; Wang, 1992).…”

Section: Introductionmentioning

confidence: 99%

Contributions of Arctic Sea‐Ice Loss and East Siberian Atmospheric Blocking to 2020 Record‐Breaking Meiyu‐Baiu Rainfall

Chen

Dai

Wen

et al. 2021

Geophysical Research Letters

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From mid-June to mid-July, a southward surge of cold air from high latitudes prevents the Asian summer monsoon from advancing further northward, generating a quasi-stationary west-east oriented front from central-east China to Japan (Ding, 1991;Tao & Chen, 1987;Zhu et al., 2003). The resultant persistent rainfall is referred to as the Meiyu in China, Changma in Korea, and Baiu in Japan. In June-July 2020, extremely heavy Meiyu-Baiu rainfall hits Japan and the middle-lower reaches of the Yangtze River in China, generating record-breaking accumulated rainfall and severe floods.Previous studies suggest that East Asian precipitation in early summer can be influenced by many factors, such as tropical and North Pacific Ocean temperatures (

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“…Meanwhile, some studies revealed the occurrence of moisture gain/loss processes during the transport (e.g., Bao et al., 2006; Ramos et al., 2016). Therefore, it is necessary to evaluate how moisture was accumulated and transported to Japan during 20HR, especially considering that it was preceded by the heavy rainfalls (hence, the great moisture loss) over southeastern China where the AR likely passed (e.g., Liu et al., 2020).…”

Section: Introductionmentioning

confidence: 99%

A Lagrangian View of Moisture Transport Related to the Heavy Rainfall of July 2020 in Japan: Importance of the Moistening Over the Subtropical Regions

Zhao

Manda

Guo

et al. 2021

Geophysical Research Letters

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The transport and accumulation of moisture played an essential role in the extremely heavy rainfall of July 2020 in Japan. To better understand this event in terms of moisture sources and transport routes, backward particle trajectory analysis was conducted. We found two major moisture sources: transport from the tropics and uptake from the subtropics. A narrow moisture channel was found along the edge of the western Pacific Subtropical High (WPSH), transporting the moisture to the Baiu front. However, most moisture from the tropics was lost due to precipitation, and their contributions were reduced to about 15%. In contrast, the subtropical regions contributed over 80% moisture via evaporation and lower tropospheric convection. Among those regions, the western Pacific contributed the most (>33%). This study highlights the role of WPSH in moisture transport and demonstrated the importance of moisture uptake during transport.

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Record-breaking Meiyu rainfall around Yangtze River in 2020 regulated by the subseasonal phase transition of North Atlantic Oscillation

Cited by 16 publications

References 6 publications

Spatiotemporal Change of Marsh Vegetation and Its Response to Climate Change in China From 2000 to 2019

Spatiotemporal Change of Marsh Vegetation and Its Response to Climate Change in China From 2000 to 2019

Contributions of Arctic Sea‐Ice Loss and East Siberian Atmospheric Blocking to 2020 Record‐Breaking Meiyu‐Baiu Rainfall

A Lagrangian View of Moisture Transport Related to the Heavy Rainfall of July 2020 in Japan: Importance of the Moistening Over the Subtropical Regions

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