1961-2018年内蒙古6级及以上大风日数时空变化特征

doi:10.12118/j.issn.1000–6060.2021.05.10

Abstract

Abstract:

Research on changes in strong wind days is important for regional climate change, disaster prevention and mitigation, and wind energy development. Therefore, the spatial and temporal distribution characteristics of strong wind days in Inner Mongolia, China were analyzed using statistical methods based on daily wind speed data of 85 meteorological stations in and around Inner Mongolia from 1961 to 2018. The results showed that: (1) Over the past 58 years, the number of strong wind days in Inner Mongolia decreased overall, and the climate tendency rate was -16.52 d·(10a)^-1. On a seasonal scale, the number of strong spring wind days was the largest, accounting for 44.30% of the year, the most significant decline [-6.24 d·(10a)^-1] of all seasons. On a wind level scale, strong wind days of level 6 were the most frequent, accounting for 80.93% of all strong wind days, the most significant decline [-11.99 d·(10a)^-1] of all levels. (2) The spatial distribution of strong wind days was large in the central part of Inner Mongolia and small in the northeastern and southwestern parts. Strong wind days occurred more frequently in Xilin Gol League, Ulanqab City, and Chifeng City but less frequently in Ordos City and Hohhot City. (3) Level 6 strong wind days were mainly concentrated in central cities, and level 8 (and higher) strong wind days were distributed in western and eastern cities. All cities showed a decreasing trend. Ulanqab City showed the highest climate trend rate of -5.49 d·(10a)^-1, and Hohhot City showed the lowest trend rate of -0.01 d·(10a)^-1.

Key words: high wind days, spatial and temporal distribution, climate tendency rate, Inner Mongolia

XING Lizhu,ZHANG Fangmin,HUANG Jin,LI Yunpeng. Spatial and temporal changes of high wind days over category 6 and above in Inner Mongolia from 1961 to 2018[J].Arid Land Geography, 2021, 44(5): 1290-1298.

Figures/Tables 9

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References 25

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年代	6级	7级	8级	9级	10级	总数	占比/%
1960s	583	158	28	1	1	769	28.11
1970s	707	189	15	1	0	912	33.33
1980s	365	69	7	0	0	441	16.12
1990s	235	6	2	1	0	244	8.92
2000s	174	26	0	0	0	200	7.31
2010s	152	17	1	0	0	170	6.21
1961—2018年	2216	465	53	3	1	2736	100
占比/%	80.91	17.00	1.94	0.11	0.04	100	-

市/盟	气候倾向率/d·(10a)^-1	1960s大风日数/d					1980s大风日数/d			2010s大风日数/d
市/盟	气候倾向率/d·(10a)^-1	6级	7级	8级	9级	10级	6级	7级	8级	6级	7级	8级
阿拉善	-2.95	115	13	4	0	0	71	10	0	30	2	1
巴彦淖尔	-2.99	18	2	0	0	0	12	2	0	0	0	0
鄂尔多斯	-0.96	36	1	0	0	0	11	0	0	9	0	0
包头	-3.25	157	34	2	0	0	50	4	1	19	0	0
呼和浩特	-0.01	1	0	0	0	0	2	0	0	1	0	0
乌兰察布	-5.49	184	26	4	0	0	91	5	2	19	1	0
锡林郭勒	-3.38	156	23	0	0	0	73	1	10	53	8	0
赤峰	-4.48	146	37	7	0	0	143	23	0	15	1	0
通辽	-3.75	133	0	0	0	1	88	0	0	0	0	0
兴安	-1.13	41	4	2	0	0	18	3	0	2	0	0
呼伦贝尔	-2.86	11	25	2	1	0	8	8	0	3	6	0

Spatial and temporal changes of high wind days over category 6 and above in Inner Mongolia from 1961 to 2018

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