Contribution of Evaporation to Precipitation Changes in the Yangtze River Basin—Precipitation Recycling
نویسندگان
چکیده
Locally evaporated water vapor is an important source of precipitation in China. The spatiotemporal variation characteristics the recycling ratio (ρ) Yangtze River Basin (YRB) 1979–2020 were calculated and analyzed, contribution internal external cycling changes to total YRB under climate change was studied. results show that annual average ρ approximately 10.3%, with highest value 21.8% summer, lower than 10% spring autumn, lowest winter, only 3.5%. Over past 40 years, has shown increasing trend, increased rate 0.4%/10a, especially 1.2%/10a. In terms spatial distribution, shows obvious difference between eastern western regions, upstream region being significantly higher downstream region. 15–35% can reach 20–50% summer. below 10%. general, formed by advection moisture accounts for majority YRB. From 1979 2020, showed trend. cumulative increase about 47.4 mm, which 68.9% contributed local evaporation, 31.1% moisture.
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ژورنال
عنوان ژورنال: Water
سال: 2023
ISSN: ['2073-4441']
DOI: https://doi.org/10.3390/w15132407