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Decadal change in summer precipitation over the east of Northwest China and its associations with atmospheric circulations and sea surface temperatures.

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Title: Decadal change in summer precipitation over the east of Northwest China and its associations with atmospheric circulations and sea surface temperatures.
Authors: Shang, Shasha1 (AUTHOR), Zhu, Gaofeng1 (AUTHOR) zhugf@lzu.edu.cn, Li, Ruolin2 (AUTHOR), Xu, Jie1 (AUTHOR), Gu, Juan1 (AUTHOR), Chen, Huiling1 (AUTHOR), Liu, Xiaowen1 (AUTHOR), Han, Tuo1 (AUTHOR)
Source: International Journal of Climatology. 6/30/2020, Vol. 40 Issue 8, p3731-3747. 17p.
Subject Terms: *Ocean temperature, *Atmospheric circulation, *Meteorological precipitation, Belt & Road Initiative, Teleconnections (Climatology), Jet streams
Geographic Terms: China
Abstract: As global warming has progressed, precipitation patterns over arid Northwest China have undergone significant change. In this study, changes in summer (JJA) precipitation over the eastern part of Northwest China (ENWC) from 1980 to 2014 were investigated using the China gridded monthly precipitation dataset (CN05.1). The results showed that summer precipitation over the ENWC experienced a decadal wet‐to‐dry shift in 1998. Westerlies played an important role in the upper atmospheric levels in terms of water vapour transport; the decadal variations in summer precipitation were principally controlled by the water vapour input from the ENWC's western boundary. In addition, the decadal variations in summer precipitation in the ENWC appear to be associated with a meridional teleconnection around 110°E and a zonal pattern over 45–60°N in the lower troposphere. These two teleconnections led to cyclonic anomalies in the ENWC and enhanced water vapour transport into the ENWC, resulting in above‐normal precipitation during the 1989–1998 decadal period. Further, the warmer (colder) sea surface temperatures (SSTs) observed in the tropical Eastern Pacific correspond to the southward (northward) displacement of the Asian jet stream and a negative (positive) phase of the Silk Road pattern, resulting in a wet (dry) ENWC. Moreover, the SST anomalies in the North Atlantic and Northwest Pacific may affect summer precipitation over the ENWC via a zonal teleconnection in the middle troposphere. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Climatology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Decadal change in summer precipitation over the east of Northwest China and its associations with atmospheric circulations and sea surface temperatures.
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  Data: <searchLink fieldCode="AR" term="%22Shang%2C+Shasha%22">Shang, Shasha</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhu%2C+Gaofeng%22">Zhu, Gaofeng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhugf@lzu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Ruolin%22">Li, Ruolin</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xu%2C+Jie%22">Xu, Jie</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gu%2C+Juan%22">Gu, Juan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Huiling%22">Chen, Huiling</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Xiaowen%22">Liu, Xiaowen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Han%2C+Tuo%22">Han, Tuo</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Climatology%22">International Journal of Climatology</searchLink>. 6/30/2020, Vol. 40 Issue 8, p3731-3747. 17p.
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  Data: *<searchLink fieldCode="DE" term="%22Ocean+temperature%22">Ocean temperature</searchLink><br />*<searchLink fieldCode="DE" term="%22Atmospheric+circulation%22">Atmospheric circulation</searchLink><br />*<searchLink fieldCode="DE" term="%22Meteorological+precipitation%22">Meteorological precipitation</searchLink><br /><searchLink fieldCode="DE" term="%22Belt+%26+Road+Initiative%22">Belt & Road Initiative</searchLink><br /><searchLink fieldCode="DE" term="%22Teleconnections+%28Climatology%29%22">Teleconnections (Climatology)</searchLink><br /><searchLink fieldCode="DE" term="%22Jet+streams%22">Jet streams</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22China%22">China</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: As global warming has progressed, precipitation patterns over arid Northwest China have undergone significant change. In this study, changes in summer (JJA) precipitation over the eastern part of Northwest China (ENWC) from 1980 to 2014 were investigated using the China gridded monthly precipitation dataset (CN05.1). The results showed that summer precipitation over the ENWC experienced a decadal wet‐to‐dry shift in 1998. Westerlies played an important role in the upper atmospheric levels in terms of water vapour transport; the decadal variations in summer precipitation were principally controlled by the water vapour input from the ENWC's western boundary. In addition, the decadal variations in summer precipitation in the ENWC appear to be associated with a meridional teleconnection around 110°E and a zonal pattern over 45–60°N in the lower troposphere. These two teleconnections led to cyclonic anomalies in the ENWC and enhanced water vapour transport into the ENWC, resulting in above‐normal precipitation during the 1989–1998 decadal period. Further, the warmer (colder) sea surface temperatures (SSTs) observed in the tropical Eastern Pacific correspond to the southward (northward) displacement of the Asian jet stream and a negative (positive) phase of the Silk Road pattern, resulting in a wet (dry) ENWC. Moreover, the SST anomalies in the North Atlantic and Northwest Pacific may affect summer precipitation over the ENWC via a zonal teleconnection in the middle troposphere. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Climatology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/joc.6424
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      – Code: eng
        Text: English
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        PageCount: 17
        StartPage: 3731
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      – SubjectFull: Ocean temperature
        Type: general
      – SubjectFull: Atmospheric circulation
        Type: general
      – SubjectFull: Meteorological precipitation
        Type: general
      – SubjectFull: Belt & Road Initiative
        Type: general
      – SubjectFull: Teleconnections (Climatology)
        Type: general
      – SubjectFull: Jet streams
        Type: general
      – SubjectFull: China
        Type: general
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      – TitleFull: Decadal change in summer precipitation over the east of Northwest China and its associations with atmospheric circulations and sea surface temperatures.
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            NameFull: Shang, Shasha
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            – D: 30
              M: 06
              Text: 6/30/2020
              Type: published
              Y: 2020
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