黄土高原区不同降水相态的时空变化

doi:10.13249/j.cnki.sgs.2016.08.014

Abstract

Abstract:

Base on the data of daily precipitation of 58 meteorological stations in Loess Plateau Region, the temporal and spatial variations of different precipitation phases were analyzed in Loess Plateau Region. The results show that line of 35°N is the delimitation boundary of main snow region and rain region; the region to the north of 35°N is the snow region, the region to the south of 35°N and to the east of 110°E is main rain region. Besides, along the 35°N and 110°E, the sleet occurs frequently. The rains in Loess Plateau Area have obvious and different inter-annual fluctuations, but the snow is not very obvious. Except rain and snow, the fluctuation frequencies of sleet, fog (dew, frost) were weak and tend to the same. The station-days of all these recipitation phases (rain sleet fog dew frost) have remarkable 30 a periods. Besides, there were also 5 a, 10 a and quasi 15 a periods to different precipitation phases.

Key words: Loess Plateau Area, precipitation phases, spatial and temporal variation, station-days

CLC Number:

P467

Yuanfeng Liu, Guofeng Zhu, Jun Zhao, Qian Li, Pengfei Hu, Kai Wang, Hanxiong Pan. Spatial and Temporal Variation of Different Precipitation Type in the Loess Plateau Area[J].SCIENTIA GEOGRAPHICA SINICA, 2016, 36(8): 1227-1233.

Figures/Tables 5

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	降雨	降雪	雨夹雪	雾露霜
东亚冬季风指数	-0.247	0.401^*	0.504^*	0.411
东亚季风指数	0.363	0.132	0.144	0.181
亚洲极涡面积指数	-0.133	0.635^**	0.372^*	0.574^**
亚洲区极涡强度指数	0.508^**	0.433	0.351	0.107
亚洲纬向环流指数	0.389	0.294	0.204	0.399
亚洲经向环流指数	0.476^*	0.573^**	0.349^*	0.274

Spatial and Temporal Variation of Different Precipitation Type in the Loess Plateau Area

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