• CN 62-1175/P
• ISSN 1006-7639
• 双月刊
• 中国科技核心期刊
• 中国学术期刊综合评价数据库统计源期刊
• 中文科技期刊数据库收录期刊

• 论文 •

### 2011—2015年乌鲁木齐冬季降雪的日变化特征

1. 1.新疆维吾尔自治区气象台，新疆乌鲁木齐830002；
2.中国气象局乌鲁木齐沙漠气象研究所，新疆乌鲁木齐830002
• 出版日期:2018-09-04 发布日期:2018-09-04
• 作者简介:杨霞（1980— ）女，甘肃武威人，高级工程师，气象学硕士，现从事灾害性天气机理研究. E-mail:Yangxia921@163.com。
• 基金资助:

新疆维吾尔自治区气象局面上项目（MS201801）、国家自然科学基金项目（41505025）和新疆维吾尔自治区气象局面上项目（MS201706）共同资助

### Diurnal Variation of Winter Snowfall in Urumqi of Xinjiang from 2011 to 2015

YANG Xia1, YU Xiaojing2, ZHAO Yalei1, YIERPANJIANG·Yasen1

1. 1. Xinjiang Meteorological Observatory, Urumqi 830002，China;
2.Institute of Desert Meteorology，China Meteorological Administration, Urumqi 830002, China
• Online:2018-09-04 Published:2018-09-04

Abstract:

Abstract:Based on the hourly snowfall data from 3 automatic weather stations in Urumqi during the period of 2011-2015, the diurnal variation characteristics of snowfall in different regions of Urumqi were analyzed. The results show that during 2011-2015, the accumulated snowfall, accumulated frequency and the frequency of snowfall with different grades in the urban area of Urumqi were greater than those in the suburb and mountainous areas in winter. The intensity of hourly snowfall was the largest in urban area, followed by suburb area and the smallest in mountainous area. The average duration of light snow in urban, suburban and mountainous areas was not obvious. The average duration of moderate snow in the suburb was the shortest. The average duration of moderate snow in the urban and mountain area was longer. The average duration of heavy snow was the shortest in suburb, followed by urban area and longest in mountain area. The average duration of snowstorm was the shortest in urban area, the second shortest in suburb, and the longest in mountain area. The amplitude of snowfall intensity in daytime was larger than that in night. The snowfall and frequency in mountain area were characterized by a single peak from afternoon to the evening. Except for 21:00, the hourly snowfall and snowfall frequency in the urban area were more than those in suburb and mountainous areas. The intensity of snowfall in the urban area was stronger than that in suburb from evening to early morning. The intensity of snowfall in the urban area was stronger than that in mountain area in the morning. The short duration  snow (1-6 h) in urban and suburban areas was prone to occuring at night and in the morning , the long duration snowfall (more than 6 h) was easy to appear in the morning and evening. The short duration and long duration snow in the mountain area was easy to appear in the afternoon and evening. The snowfall in urban area began in the early morning or early afternoon and ended at noon. The snowfall in the suburb area began at midnight and ended in the morning. The snowfall in the mountain area started in the afternoon and ended in the late evening.

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