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Moisture source variations for summer rainfall in different intensity classes over Huaihe River Valley, China

Publication ,  Journal Article
Liu, Y; Zhang, C; Tang, Q; Hosseini-Moghari, SM; Haile, GG; Li, L; Li, W; Yang, K; van der Ent, RJ; Chen, D
Published in: Climate Dynamics
August 1, 2021

Rainfall is one of the most influential climatic factors on regional development and environment, and changes in rainfall intensity are of specific concern. In the Huaihe River Valley (HRV), heavy rainfall is a primary trigger of floods. However, the difference in the origin of moisture contributed to heavy rainfall and light rainfall is rarely studied and not entirely understood. This study analyzes the rainfall moisture sources in association with different categories of rainfall intensity over the HRV during 1980–2018 using the Water Accounting Model with ERA-Interim reanalysis and precipitation observations from China Meteorological Administration. The results show that the moisture for the HRV summer rainfall is mainly from terrestrial subregion (40%), the Indian Ocean (27%), the Pacific Ocean (25%), and the local HRV (8%). In addition, moisture sources differ substantially between light and heavy rainfall. Specifically, the local HRV contributes more moisture to light rainfall (12%) compared to heavy rainfall (4%), whereas the Indian Ocean contributes more to heavy rainfall (33%) than to light rainfall (20%). The grids located in the southern source region make higher contribution ratio in heavy rainfall than in light rainfall. These results suggest that moisture from distant oceanic areas, especially the Indian Ocean, plays a crucial role in intense summer rainfall, whereas moisture from the land sources covering local grids plays a dominant role in light rainfall in the HRV.

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Published In

Climate Dynamics

DOI

EISSN

1432-0894

ISSN

0930-7575

Publication Date

August 1, 2021

Volume

57

Issue

3-4

Start / End Page

1121 / 1133

Related Subject Headings

  • Meteorology & Atmospheric Sciences
  • 3708 Oceanography
  • 3702 Climate change science
  • 3701 Atmospheric sciences
  • 0406 Physical Geography and Environmental Geoscience
  • 0405 Oceanography
  • 0401 Atmospheric Sciences
 

Citation

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Liu, Y., Zhang, C., Tang, Q., Hosseini-Moghari, S. M., Haile, G. G., Li, L., … Chen, D. (2021). Moisture source variations for summer rainfall in different intensity classes over Huaihe River Valley, China. Climate Dynamics, 57(3–4), 1121–1133. https://doi.org/10.1007/s00382-021-05762-4
Liu, Y., C. Zhang, Q. Tang, S. M. Hosseini-Moghari, G. G. Haile, L. Li, W. Li, K. Yang, R. J. van der Ent, and D. Chen. “Moisture source variations for summer rainfall in different intensity classes over Huaihe River Valley, China.” Climate Dynamics 57, no. 3–4 (August 1, 2021): 1121–33. https://doi.org/10.1007/s00382-021-05762-4.
Liu Y, Zhang C, Tang Q, Hosseini-Moghari SM, Haile GG, Li L, et al. Moisture source variations for summer rainfall in different intensity classes over Huaihe River Valley, China. Climate Dynamics. 2021 Aug 1;57(3–4):1121–33.
Liu, Y., et al. “Moisture source variations for summer rainfall in different intensity classes over Huaihe River Valley, China.” Climate Dynamics, vol. 57, no. 3–4, Aug. 2021, pp. 1121–33. Scopus, doi:10.1007/s00382-021-05762-4.
Liu Y, Zhang C, Tang Q, Hosseini-Moghari SM, Haile GG, Li L, Li W, Yang K, van der Ent RJ, Chen D. Moisture source variations for summer rainfall in different intensity classes over Huaihe River Valley, China. Climate Dynamics. 2021 Aug 1;57(3–4):1121–1133.
Journal cover image

Published In

Climate Dynamics

DOI

EISSN

1432-0894

ISSN

0930-7575

Publication Date

August 1, 2021

Volume

57

Issue

3-4

Start / End Page

1121 / 1133

Related Subject Headings

  • Meteorology & Atmospheric Sciences
  • 3708 Oceanography
  • 3702 Climate change science
  • 3701 Atmospheric sciences
  • 0406 Physical Geography and Environmental Geoscience
  • 0405 Oceanography
  • 0401 Atmospheric Sciences