Dust weather changes in Northwest Chinese Cities: Lanzhou as a case study
Received date: 2024-02-28
Revised date: 2024-05-06
Online published: 2025-08-14
In recent years, many studies on sand and dust storms in Northwest China have mainly focused on large and regional scales, with less research on urban sand and dust storms. This paper studies the changing characteristics of urban sand and dust weather in Lanzhou City to understand the alteration characteristics of urban sand and dust storms. The results showed that (1) The number of days of floating dust, sand lifting, and dust storms in Lanzhou City from 2009 to 2023 showed multisegment fluctuation; the change at the time series level as a whole and the total number of days of sand and dust weather showed a marginal decrease of 0.66 d·a-1. (2) The sand and dust weather in Lanzhou City was concentrated in the spring, declining monthly after the cliff rises in March, mainly dominated by floating dust, followed by sand and dust storms. (3) The annual average frequency of dusty weather in Lanzhou City from 2009 to 2023 correlated positively with wind speed, which is the main meteorological factor affecting dusty weather, weakly negatively correlated with relative humidity, and no obvious correlation with the rest of the meteorological factors. (4) The number of dusty days occurred in 3-time cycle scales of 2~3 a, 4~7 a, and 8~23 a, revealing a multisegmented nonsignificant fluctuation, of which 8~23 a corresponded to two peaks with the most substantial amplitude, which is the primary cycle of dusty fluctuation.
Key words: dusty weather; floating dust; blowing sand; sandstorm; characteristics of change; Lanzhou
LYU Yanxun , ZHAO Hongmin , WANG Xiaojun , WANG Bin , MA Zhongwu , LIU Minlan , ZHANG Linghui . Dust weather changes in Northwest Chinese Cities: Lanzhou as a case study[J]. Arid Zone Research, 2024 , 41(7) : 1112 -1119 . DOI: 10.13866/j.azr.2024.07.03
图2 2009—2023年兰州各类沙尘天气次数相关性注:A为沙尘天气总日数;B为浮尘日数;C为扬沙日数;D为沙尘暴日数。 Fig. 2 Correlation of the number of various types dust weather from 2009 to 2023 in Lanzhou |
图4 兰州2009—2023年沙尘天气月均日数和季节变化Fig. 4 Monthly average days and the seasonal variations changes in dusty conditions from 2009 to 2023 in Lanzhou |
表1 2009—2023年兰州沙尘天气气象要素统计Tab. 1 Statistical of dusty weather and other meteorological elements from 2009 to 2023 in Lanzhou |
| 指标 | 沙尘天气 | 气象要素 | ||||||
|---|---|---|---|---|---|---|---|---|
| 年沙尘暴日数/d | 年扬沙日数/d | 年浮尘日数/d | 年均气温/℃ | 年降水量/mm | 年相对湿度/% | 当日风速/(m·s-1) | ||
| 平均值 | 0.73 | 2.67 | 14.40 | 8.70 | 20.40 | 55.42 | 3.45 | |
| 标准差 | 1.01 | 3.54 | 7.37 | 0.32 | 6.34 | 3.30 | 4.91 | |
| 变异系数 | 1.38 | 1.33 | 0.51 | 0.04 | 0.31 | 0.06 | 1.42 | |
注:变异系数无单位。 |
| [1] |
秦豪君, 杨晓军, 马莉, 等. 2000—2020年中国西北地区区域性沙尘暴特征及成因[J]. 中国沙漠, 2022, 42(6): 53-64.
[
|
| [2] |
杨晓军, 张强, 叶培龙, 等. 中国北方2021年3月中旬持续性沙尘天气的特征及其成因[J]. 中国沙漠, 2021, 41(3): 245-255.
[
|
| [3] |
钱正安, 宋敏红, 李万元. 近50年来中国北方沙尘暴的分布及变化趋势分析[J]. 中国沙漠, 2002, 23(2): 10-15.
[
|
| [4] |
魏桂英, 陈少勇, 张媛文. 腾格里沙漠南缘沙尘暴气候变化特征——以甘肃省景泰县为例[J]. 干旱区研究, 2015, 32(6): 1133-1139.
[
|
| [5] |
陈晓光, 张存杰, 董安祥, 等. 甘肃省沙尘暴过程的划分及统计分析[J]. 高原气象, 2004, 23(3): 374-381.
[
|
| [6] |
|
| [7] |
|
| [8] |
|
| [9] |
|
| [10] |
杨梅, 李岩瑛, 张春燕, 等. 河西走廊中东部春季沙尘暴变化特征及其典型个例分析[J]. 干旱区地理, 2021, 44(5): 1339-1349.
[
|
| [11] |
|
| [12] |
|
| [13] |
|
| [14] |
|
| [15] |
|
| [16] |
|
| [17] |
孔祥吉, 王雨, 黄侃, 等. 2021年春季我国沙尘天气发生时空特征分析[J]. 林业资源管理, 2022, 50(3): 117-121.
[
|
| [18] |
|
| [19] |
康杜娟, 王会军. 中国北方沙尘暴气候形势的年代际变化[J]. 中国科学: 地球科学 2005, 26(11): 1096-1102.
[
|
| [20] |
杨明珠, 竺夏英, 艾婉秀, 等. 中国北方春季沙尘天气气候趋势的多因子客观预测[J]. 科技导报, 2019, 37(20): 19-29.
[
|
| [21] |
刘景涛, 钱正安, 姜学恭, 等. 中国北方特强沙尘暴的天气系统分型研究[J]. 高原气象, 2004, 23(4): 540-547.
[
|
| [22] |
张增祥, 周全斌, 刘斌, 等. 中国北方沙尘灾害特点及其下垫面状况的遥感监测[J]. 遥感学报, 2001, 16(5): 377-382, 406.
[
|
| [23] |
张杰, 郭铌, 荻潇泓. 西北地区东部冬季降水与次年沙尘暴发生的关系[J]. 中国沙漠, 2004, 23(5): 87-90.
[
|
| [24] |
|
| [25] |
中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会. 沙尘天气等级(GB/T 20480-2017)[S]. 北京: 中国标准出版社, 2017.
[General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China, Standardization Administration of the People’s Republic of China. Classification of Sand and Dust Weather (GB/T 20480-2017) [S]. Beijing: Standards Press of China, 2017.]
|
| [26] |
李亚云, 成巍, 王宁, 等. 塔克拉玛干沙漠和戈壁沙漠春季沙尘暴特征及其气象影响因素对比[J]. 中国沙漠, 2023, 43(4): 1-9.
[
|
| [27] |
中国气象局. 地面气象观测规范[M]. 北京: 气象出版社, 2003.
[China Meteorological Administration. Specification for Surface Meteorological Observation[M]. Beijing: China Meteorological Press, 2003.]
|
| [28] |
李玲萍, 李岩瑛, 孙占峰, 等. 河西走廊东部沙尘暴特征及地面气象因素影响机制[J]. 干旱区研究, 2019, 36(6): 1457-1465.
[
|
| [29] |
杜灵通, 宋乃平, 王磊. 气候变化背景下宁夏近50年来的干旱变化特征[J]. 自然灾害学报, 2015, 24(2): 157-164.
[
|
| [30] |
梅静, 王建, 何亮, 等. 川西甘孜州1961—2015年气温和降水时空变化特征研究[J]. 山地学报, 2019, 37(2): 161-172.
[
|
| [31] |
《2020年大气环境气象公报》: 全国大气环境继续改善霾日数继续下降[J]. 中国环境监察, 2021, 12(4): 4-5.
[Atmospheric environment and meteorology bulletin 2020: National atmospheric environment continues to improve and the number of hazy days continues to decline[J]. China Environment Supervision, 2021, 12(4): 4-5.]
|
| [32] |
|
| [33] |
杨燕萍, 王莉娜, 杨丽丽, 等. 兰州市沙尘天气污染特征及潜在源区[J]. 中国沙漠, 2020, 40(3): 60-66.
[
|
| [34] |
|
| [35] |
|
| [36] |
李红军, 李军, 何清. 新疆沙尘暴的趋势和突变研究[J]. 中国沙漠, 2008, 28(5): 915-919.
[
|
/
| 〈 |
|
〉 |