新疆天山山区夏季降水日变化特征及其与海拔高度关系

doi:10.12118/j.issn.1000–6060.2021.057

Abstract

Abstract:

The Tianshan Mountains receive more precipitation than the rest of the Xinjiang arid zone. Previous studies investigated the precipitation variation in Tianshan Mountains of Xinjiang, China, by using daily and monthly precipitation data, but they did not focus on the diurnal variation of summer precipitation. Summer (June to August) hourly precipitation data covering 11 meteorological stations in Tianshan Mountains during 2012—2018 revealed the characteristics of diurnal variation, including the amount, occurrence, and intensity of precipitation. The relationship between terrain height and precipitation is investigated. The main conclusions are as follows: The peak values of total precipitation and total precipitation frequency occur from 20:00 to 22:00 Beijing time, and the valley values occur from 12:00 to 13:00. Precipitation mainly occurs at night (21:00—08:00), and the total precipitation is mainly contributed by long-term precipitation. The intensity of total precipitation shows an increasing trend during the day (09:00—20:00) and an opposite variation at night. The precipitation is related to terrain height and light rain frequently occurs at high altitudes. The maximum rainy belt is found at an altitude of about 2000 m.

Key words: precipitation, precipitation frequency, precipitation intensity, diurnal variation, altitude

GUO Yulin,ZHAO Yong,ZHOU Yaman,HUANG Qiuxia,YU Zhenyi,GU Zhangjie. Diurnal variation of summer precipitation and its relationship with altitude in Tianshan Mountains of Xinjiang[J].Arid Land Geography, 2022, 45(1): 57-65.

Figures/Tables 8

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站点名称	站点号	站点类别	经度/E	纬度/N	海拔/m
尼勒克	51433	国家基本气象站	82°31′	43°48′	1105.3
特克斯	51438	国家气象观测站	81°46′	43°11′	1210.4
巴里坤	52101	国家基本气象站	93°03′	43°36′	1679.4
伊吾	52118	国家基本气象站	94°42′	43°16′	1728.6
巴仑台	51467	国家基本气象站	86°20′	42°46′	1732.4
昭苏	51437	国家基准气候站	81°08′	43°09′	1851.0
小渠子	51465	国家气象观测站	87°06′	43°29′	1871.8
乌鲁木齐牧试站	51469	国家基本气象站	87°11′	43°27′	1930.0
天池	51470	国家基准气候站	88°07′	43°53′	1942.5
巴音布鲁克	51542	国家基本气象站	84°09′	43°02′	2458.0
天山大西沟	51468	国家气象观测站	86°50′	43°06′	3539.0

Diurnal variation of summer precipitation and its relationship with altitude in Tianshan Mountains of Xinjiang

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