Spatiotemporal Variations in Light Precipitation Events in the Yellow River Basin, China, and Relationships with Large-Scale Atmospheric Circulation Patterns

نویسندگان

چکیده

Light precipitation events are an essential feature of rainfall for agricultural production, risk prediction drought or flood disasters, and natural resource management in a certain area. We investigated the spatiotemporal variations light with intensities 0.1–10 mm/day, based on daily data Yellow River Basin (YRB), China, during 1960–2018, explored their relationships large-scale atmospheric circulation patterns (LSACPs) altitude. For further analysis changes events, we classified rain (0.1 ≤ P < 10.0 mm/day) into five grades intensity by using equal interval division. Results indicate that mean annual amount days were 182.7 mm 80 days, respectively, from 1960 to 2018 over YRB, accounting 39.2% 85.2% total respectively. Both number declined −1.3 mm/decade −1.4 days/decade, suggested most low 2.0 mm/day). mainly occurred upper middle reaches YRB decreased southwest north. Additionally, appear be complex possibly related LSACPs found possible mechanism past decades. With increasing elevation, significantly throughout study period. Thus, decrease at lower altitudes YRB. The results also reflect complexity regional climate change because phenomena not only causes variation but its altitude dependence.

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ژورنال

عنوان ژورنال: Sustainability

سال: 2022

ISSN: ['2071-1050']

DOI: https://doi.org/10.3390/su14126969