SCIENTIA GEOGRAPHICA SINICA ›› 2016, Vol. 36 ›› Issue (8): 1227-1233.doi: 10.13249/j.cnki.sgs.2016.08.014

• Orginal Article • Previous Articles     Next Articles

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

Yuanfeng Liu1(), Guofeng Zhu1,2(), Jun Zhao1, Qian Li1, Pengfei Hu1, Kai Wang1, Hanxiong Pan1   

  1. 1.College of Resources and Environmental Sciences, Lanzhou Uniwersity, Lanzhou 730070, Gansu, China
    2.State Key Laboratory of CryosphereScience,Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China
  • Received:2015-06-23 Revised:2015-11-11 Online:2016-08-20 Published:2016-08-20
  • Supported by:
    National Natural Science Foundation of China (41661005, 41271133, 41273010) , Chinese Postdoctoral Science Foundation (2016T90961, 2015M570864), Open-ended Fund of State Key Laboratory of Cryosphere Sciences, Chinese Academy of Sciences (SKLCS-OP-2014-11),Project of the Northwest Normal University Young Teachers Scientific Research Ability Promotion Plan (NWNU-LKQN-13-10), Project of Major National Research Projects of China (2013CBA01808)

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