Assessment of the applicability of multi-satellite precipitation products on the Loess Plateau over the past four decades

作者：Rui Liu, Yang Liu, Zhengguo Shi, Mengdao Xing · 发表于：International Journal of Applied Earth Observation and Geoinformation · 年份：2025 · DOI：10.1016/j.jag.2025.104634 · 被引用次数：2 · 研究领域：Precipitation Measurement and Analysis、Soil Moisture and Remote Sensing、Meteorological Phenomena and Simulations

• The Loess Plateau precipitation inversion result derived from the CPC are superior. • The quality of data sources and the efficacy of algorithms are crucial determinants. • The Loess Plateau has been gradually humidified since 2000. • Thermal term plays a significant role in the humidification of the Loess Plateau. The study of drought and precipitation evolution due to global warming has garnered significant attention from the scientific community in recent years. The Loess Plateau (LP), a typical dryland agricultural area, has its agricultural development influenced by precipitation. However, given its location in the hinterland of the Eurasian continent, the complex terrain, and the severe lack of rain gauges, the region faces challenges in accurate precipitation measurement. Multi-satellite precipitation products (MPPs), with their wide coverage and high resolution, can potentially address this deficiency, making it crucial to assess their applicability on the LP. This study evaluates the results of the inversion of LP precipitation changes by MPPs, the factors influencing the precipitation changes, and the dynamical mechanisms affecting LP precipitation evolution. The findings indicate that the CPC is the most suitable product for inverting daily precipitation on the LP, with the highest correlation coefficient of 0.774 between CPC and observations, and the highest Probability of Detection of 0.667. This is attributed to the stable data sources and excellent algorithms...