Journal of Arid Meteorology ›› 2022, Vol. 40 ›› Issue (2): 212-221.DOI: 10.11755/j.issn.1006-7639(2022)-02-0212
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XU Tingting1(), YANG Xia1, ZHOU Hongkui2()
Received:
2021-01-26
Revised:
2021-04-09
Online:
2022-04-30
Published:
2022-05-10
Contact:
ZHOU Hongkui
通讯作者:
周鸿奎
作者简介:
许婷婷(1989— ),女,工程师,主要从事天气预报与服务. E-mail: 1048330331@qq.com。
基金资助:
CLC Number:
XU Tingting, YANG Xia, ZHOU Hongkui. Spatio-temporal characteristics and circulation types of regional high temperature weather processes in Xinjiang during 1981-2019[J]. Journal of Arid Meteorology, 2022, 40(2): 212-221.
许婷婷, 杨霞, 周鸿奎. 1981—2019年新疆区域性高温天气过程时空特征及其环流分型[J]. 干旱气象, 2022, 40(2): 212-221.
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URL: http://www.ghqx.org.cn/EN/10.11755/j.issn.1006-7639(2022)-02-0212
区域性高温天气过程等级 | 高温天气过程等级指标 |
---|---|
特强 | 1≤RI<2 |
强 | 2≤RI<3 |
中等 | 3≤RI<4 |
弱 | RI≥4 |
Tab.1 Classification of high temperature weather process
区域性高温天气过程等级 | 高温天气过程等级指标 |
---|---|
特强 | 1≤RI<2 |
强 | 2≤RI<3 |
中等 | 3≤RI<4 |
弱 | RI≥4 |
Fig.1 Spatial distribution of occurrence times of regional high temperature weather processes in Xinjiang from June to August (a) and in July (b) during 1981-2019 (Unit: times)
Fig.2 The start time (a, b) and end time (c, d) inter-annual variation of regional high temperature weather processes (a, c) and its times ten-day’s distribution (b, d) in Xinjiang during 1981-2019
Fig.3 The inter-annual variation of occurrence times of regional high temperature weather processes with different grades in Xinjiang from June to August during 1981-2019 (a) high temperature weather process, (b) weak high temperature weather process, (c) moderate high temperature weather process, (d) severe high temperature weather process
Fig.4 The monthly variation of occurrence times of regional high temperature weather processes with different grades in Xinjiang from June to August during 1981-2019
时段 | 不同等级高温天气过程发生次数 | 合计 | 强度排名 前10的过程数 | |||
---|---|---|---|---|---|---|
特强 | 强 | 中等 | 弱 | |||
20世纪80年代 | 0 | 3 | 9 | 11 | 23 | 2 |
20世纪90年代 | 0 | 1 | 12 | 8 | 21 | 1 |
21世纪00年代 | 0 | 3 | 12 | 15 | 30 | 3 |
2011—2019年 | 1 | 4 | 13 | 8 | 26 | 4 |
合计 | 1 | 11 | 46 | 42 | 100 | 10 |
Tab.2
时段 | 不同等级高温天气过程发生次数 | 合计 | 强度排名 前10的过程数 | |||
---|---|---|---|---|---|---|
特强 | 强 | 中等 | 弱 | |||
20世纪80年代 | 0 | 3 | 9 | 11 | 23 | 2 |
20世纪90年代 | 0 | 1 | 12 | 8 | 21 | 1 |
21世纪00年代 | 0 | 3 | 12 | 15 | 30 | 3 |
2011—2019年 | 1 | 4 | 13 | 8 | 26 | 4 |
合计 | 1 | 11 | 46 | 42 | 100 | 10 |
过程等级 | 过程发生 次数/次 | 过程平均持续日数/d | |||
---|---|---|---|---|---|
6月 | 7月 | 8月 | 6—8月 | ||
特强 | 1 | 0.0 | 22.0 | 0.0 | 22.0 |
强 | 11 | 0.0 | 10.0 | 11.7 | 11.1 |
中等 | 46 | 9.8 | 7.2 | 6.0 | 7.4 |
弱 | 42 | 4.3 | 4.4 | 3.7 | 4.2 |
Tab.3 The monthly variation of duration days of regional high temperature weather processes with different grades in Xinjiang from June to August during 1981-2019
过程等级 | 过程发生 次数/次 | 过程平均持续日数/d | |||
---|---|---|---|---|---|
6月 | 7月 | 8月 | 6—8月 | ||
特强 | 1 | 0.0 | 22.0 | 0.0 | 22.0 |
强 | 11 | 0.0 | 10.0 | 11.7 | 11.1 |
中等 | 46 | 9.8 | 7.2 | 6.0 | 7.4 |
弱 | 42 | 4.3 | 4.4 | 3.7 | 4.2 |
时 段 | 过程数/次 | 过程平均 持续日数/d | 持续5 d及以上的 过程数/次 | 持续10 d及以上的 过程数/次 |
---|---|---|---|---|
20世纪80年代 | 23 | 6.4 | 15 | 4 |
20世纪90年代 | 21 | 6.0 | 14 | 1 |
21世纪00年代 | 30 | 5.7 | 20 | 2 |
2011—2019年 | 26 | 8.2 | 21 | 9 |
Tab.4 The statistics of duration days of regional high temperature weather processes in Xinjiang in different periods during 1981-2019
时 段 | 过程数/次 | 过程平均 持续日数/d | 持续5 d及以上的 过程数/次 | 持续10 d及以上的 过程数/次 |
---|---|---|---|---|
20世纪80年代 | 23 | 6.4 | 15 | 4 |
20世纪90年代 | 21 | 6.0 | 14 | 1 |
21世纪00年代 | 30 | 5.7 | 20 | 2 |
2011—2019年 | 26 | 8.2 | 21 | 9 |
时 段 | 不同影响系统出现次数 | 合计 | |||
---|---|---|---|---|---|
伊朗副高东伸型 | 叠加型 | 新疆脊型 | 西太副高西伸型 | ||
20世纪80年代 | 12 | 9 | 1 | 1 | 23 |
20世纪90年代 | 14 | 3 | 4 | 0 | 21 |
21世纪00年代 | 17 | 5 | 7 | 1 | 30 |
2011—2019年 | 11 | 15 | 0 | 0 | 26 |
合计 | 54 | 32 | 12 | 2 | 100 |
Tab.5
时 段 | 不同影响系统出现次数 | 合计 | |||
---|---|---|---|---|---|
伊朗副高东伸型 | 叠加型 | 新疆脊型 | 西太副高西伸型 | ||
20世纪80年代 | 12 | 9 | 1 | 1 | 23 |
20世纪90年代 | 14 | 3 | 4 | 0 | 21 |
21世纪00年代 | 17 | 5 | 7 | 1 | 30 |
2011—2019年 | 11 | 15 | 0 | 0 | 26 |
合计 | 54 | 32 | 12 | 2 | 100 |
Fig.6 The geopotential height field at 500 hPa during high temperature weather processes with the eastward extension of Iranian subtropical high type (a) and in typical temperature weather on 8 July 2017 (b) (Unit: gpm)
Fig.7 The geopotential height field at 500 hPa during high temperature weather processes with the superposition type (a) and in typical temperature weather on 23 July 2015 (b) (Unit: gpm)
Fig.8 The geopotential height field at 500 hPa during high temperature weather processes with the Xinjiang high pressure ridge type (a) and in typical temperature weather on 20 June 2004 (b) (Unit: gpm)
Fig.9 The geopotential height field at 500 hPa during high temperature weather processes with the westward extension of western Pacific subtropical high type (Unit: gpm)
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