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首页> 外文期刊>Nordic hydrology >Maximum precipitation altitude on the northern flank of the Qilian Mountains, northwest China
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Maximum precipitation altitude on the northern flank of the Qilian Mountains, northwest China

机译：祁连山北翼最大降水高度

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摘要

Investigation of the altitude of maximum precipitation (AMP) and the factors that determine this height supports the understanding of vertical precipitation distribution in mountains. Based on the field precipitation measurement on the northern flank of the Qilian Mountains, the AMP was investigated at vertical profiles from 1,483 to 4,484 m. It found a 2,300 m-AMP in winter and a 4,200 m-AMP in other seasons and on a yearly scale. The AMPs increase from the cold and dry season to the warm and wet season and therefore increase with precipitation. During winter, the interaction of the predominant high-pressure system, the thermal inversion layer below 2,200 m, and the westerly lead to the 2,300-m AMP. In other seasons, the convergent Tibetan Plateau monsoon causes the water vapor move to the Qilian Mountains, and the enhanced uplifting by the mountain produces greater precipitation with altitude, forming the AMP at the higher areas. The front steepest terrain is the primary factor causing the formation of 4,200-m AMP in the study area. The annual AMP may be roughly equal to seven-eighths of the altitude of the mountain top on the north flank of the Qilian Mountains.
机译：对最大降水高度（AMP）以及确定该高度的因素的研究支持了对山区垂直降水分布的理解。基于对祁连山北翼的现场降水测量，对AMP在1,483至4,484 m的垂直剖面上进行了研究。它在冬季发现了2,300 m-AMP，在其他季节发现了4,200 m-AMP，并且逐年增加。 AMP从寒冷和干燥的季节到温暖和潮湿的季节都增加，因此随着降水的增加而增加。在冬季，主要的高压系统，2,200 m以下的热反演层和西风的相互作用导致了2,300-m的AMP。在其他季节，青藏高原季风的收敛导致水汽流向祁连山，而随着海拔的升高，随着海拔的升高，降水量增加，从而在较高的地区形成了AMP。前最陡的地形是导致研究区域内形成4,200 m AMP的主​​要因素。年度AMP大约等于祁连山北翼山顶海拔的八分之八。

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