4.7 Article

Spatial and Temporal Distribution of Cloud Water in the Yellow River Basin, China

Journal

REMOTE SENSING
Volume 14, Issue 17, Pages -

Publisher

MDPI
DOI: 10.3390/rs14174166

Keywords

Yellow River Basin; water vapor; cloud liquid water; cloud ice water

Funding

  1. National Natural Science Foundation of China [41867030, 41971036, 42161043]
  2. National Natural Science Foundation innovation research group science foundation of China [41421061]

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The distribution of cloud water in the Yellow River Basin shows distinct temporal and spatial characteristics, with higher content in the eastern region compared to the west. The average annual atmospheric water vapor content is increasing.
The Yellow River Basin is essential to China's economic and social development and ecological security. In order to assess the temporal and spatial distribution of cloud water in the Yellow River Basin, we analyzed the distribution characteristics of water vapor content and cloud water content using ERA5 monthly averaged data from 1980 to 2019. The results showed that the high-value area of the annual average atmospheric water vapor content distribution was concentrated above the North China Plain in the eastern part of the basin, and the value was mostly between 21 and 24 mm. The low-value areas were mainly centered above the high mountain areas in the western part of the basin, and the value mostly fell between 3 and 6 mm. The seasonal distribution characteristics of the annual average water vapor content were relatively consistent with the annual average distribution characteristics. The high-value cloud ice water content area was in the northeastern part of the Qinghai-Tibet Plateau (4.5 g center dot m(-2)), while the low-value area appeared on the Loess Plateau (2 g center dot m(-2)). The high-value area of cloud liquid water content was on the north side of the West Qinling Mountains (12 g center dot m(-2)). The low-value area appeared on the Loess Plateau and the northern part of the Qinghai-Tibet Plateau (3 g center dot m(-2)). The cloud water content was higher in the eastern region than in the western region in the overall spatial distribution, and the content of cloud liquid water was higher than that of cloud ice water. The average annual atmospheric water vapor content was increasing, and the annual average content of cloud ice water and cloud liquid water was declining. The change in the total amount and spatial distribution of cloud water was not obvious in the Yellow River Basin.

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