id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
esrj-93925	Zhang, Yannan ; Liang, Chuan 	Application of remote sensing technology in the analysis of periodic precipitation change in China’s Northern semi-arid area	2021	8	.pdf	application/pdf	6842	250	46	Among them, the maximum peak corresponds to the time scale of 50a, indicating that the cycle oscillation of about 50a is the strongest, which is the first main cycle of precipitation change in four areas; The 20a time scale corresponds to the second peak, which is the second main cycle of annual precipitation change; The third peak corresponds to the time scale of 14a, which is the third main cycle; The fourth peak corresponds to the time scale of 37a, which is the fourth main cycle; The fifth peak corresponds to the time scale of 6a, which is the fifth main period. Lan Yongchao et al. studied the impact of climate change on the water resources system in the upper reaches of the Yellow River; Xu Yueqing et al. studied the law of precipitation change in Hebei Plain based on wavelet analysis; Lin Zhenyao et al. studied the temporal and spatial characteristics of temperature and precipitation change in the Qinghai Tibet Plateau; Dai Xingang et al. studied the multi-scale characteristics of precipitation in flood season and the inter-generational decay characteristics of summer monsoon in North China Levy.	cache/esrj-93925.pdf	txt/esrj-93925.txt