1960—2019年山西省地面風(fēng)速變化分析
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中國(guó)氣象局預(yù)報(bào)員專項(xiàng)項(xiàng)目(CMAYBY2020018)、山西省氣象局面上項(xiàng)目(SXKMSQH20185114)資助


Analysis of Surface Wind Speed Changes in Shanxi during 1960-2019
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    摘要:

    利用山西省1960—2019年108個(gè)地面氣象觀測(cè)站的風(fēng)速觀測(cè)資料,采用線性擬合、MK檢驗(yàn)等方法分析了近60年山西省地面風(fēng)速的變化特征。結(jié)果表明:山西省晉西北及西部山區(qū)、晉中市北部、長(zhǎng)治市東南部、運(yùn)城盆地西南部等地風(fēng)速較大,中部斷陷盆地區(qū)風(fēng)速較小;春季風(fēng)速最大,冬季和夏季次之,秋季最小;近60年山西省年和四季平均風(fēng)速變化趨勢(shì)和階段特征較為明顯,20世紀(jì)60—70年代前期,風(fēng)速為增加趨勢(shì),之后到80年代末期減少趨勢(shì)明顯,90年代開(kāi)始風(fēng)速減少趨勢(shì)變緩;而冬季風(fēng)速則自1990年之后顯著增加。經(jīng)MK檢驗(yàn)可知,年、春、夏和秋季平均風(fēng)速突變時(shí)間點(diǎn)均在20世紀(jì)80年代初,年和秋季在1982年、春季和夏季在1984年;冬季則沒(méi)有顯著突變發(fā)生。

    Abstract:

    Based on the observed wind speed data from 1960 to 2019 from 108 ground meteorological stations in Shanxi Province, the trend characteristics of surface wind speeds in Shanxi over the past 60 years are analyzed by the linear fitting, MK test and other methods. The results show that the wind speeds were relatively high in the northwestern and western mountainous areas, the north part of Jinzhong, the southeast part of Changzhi, and the southwest part of Yuncheng Basin, while it was relatively low in the central basin. The wind speed was the highest in spring, followed by winter and summer, and the lowest in autumn. In recent 60 years, the annual and seasonal average wind speeds in Shanxi had obvious change trends and stage characteristics. From the 1960s to the early 1970s, the wind speed increased, and then decreased significantly in the late 1980s. Since the 1990s, the wind speed decreased and slowed down, while the winter wind speed have increased significantly since 1990. The MK test of surface wind speed in Shanxi shows that the abrupt change time of annual, spring, summer, autumn average wind speed was 1982, 1984, 1984 and 1982, respectively, but there was no significant abrupt change in winter average wind speed.

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王大勇,王曉瓊,張冬峰,劉文平.1960—2019年山西省地面風(fēng)速變化分析[J].氣象科技,2021,49(4):597~603

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  • 收稿日期:2020-08-21
  • 定稿日期:2021-01-15
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  • 在線發(fā)布日期: 2021-08-23
  • 出版日期: 2021-08-31
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