[1]QIAO Miao,ZENG Yan,QIU Xinfa.Influence of Macro Slope Aspect on Different Grades of Precipitation[J].Research of Soil and Water Conservation,2018,25(01):167-171.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 01
Page number:
167-171
Column:
Public date:
2018-02-28
- Title:
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Influence of Macro Slope Aspect on Different Grades of Precipitation
- Author(s):
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QIAO Miao1, ZENG Yan2, QIU Xinfa3
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1. School of Geography and Remote Sensing, Nanjing University of Information Science and Technology, Nanjing 210044, China;
2. Jiangsu Climate Center, Nanjing 210009, China;
3. School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China
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- Keywords:
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meteorology; precipitation grade; primary and secondary precipitation orientation; macro slope aspect
- CLC:
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P333.1
- DOI:
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- Abstract:
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There is a significant difference in rainfall intensity and areal precipitation between windward slope and leeward slope. Using the algorithm of primary and secondary precipitation orientation and the data of surface observation rainfall, we analyzed how slope affects precipitation at different levels. Combining with DEM data, we calculated the day difference and total precipitation difference of national meteorological stations from 1961 to 2000, and then compared and analyzed its characteristics from the aspects of exposures, significance test and absolute value. The result shows that exposures have various effects on different precipitation levels. The effect decreases in the order:torrential rain > heavy rain > moderate rain > light rain. In addition, the effect of exposures on different precipitation levels is also determined by the combined impact of landform and the wet and dry conditions. The results show that it is most significantly correlated with mountain land, less correlated with hills and the least correlated with plains. In the meantime, it is most significantly correlated with sub-humid zone, less correlated with semi-arid zone, and the least correlated with arid zone.