Journal of Arid Meteorology ›› 2024, Vol. 42 ›› Issue (4): 519-526.DOI: 10.11755/j.issn.1006-7639(2024)-04-0519
• Special Column: Characteristics and Effects of Drought • Previous Articles Next Articles
LI Chunhua1,2(), ZHU Biao3(
), YANG Jinhu1, HUANG Pengcheng3
Received:
2023-11-23
Revised:
2024-06-17
Online:
2024-08-31
Published:
2024-09-13
通讯作者:
朱飙(1972—),男,正高级工程师,主要从事气候变化研究。E-mail:作者简介:
李春华(1973—),女,副教授,主要从事气象教学与研究。E-mail:Lch1908@lzre.edu.cn。
基金资助:
CLC Number:
LI Chunhua, ZHU Biao, YANG Jinhu, HUANG Pengcheng. Analysis of climatic characteristics of meteorological drought in arid and semi-arid regions of China in recent 60 years[J]. Journal of Arid Meteorology, 2024, 42(4): 519-526.
李春华, 朱飙, 杨金虎, 黄鹏程. 我国干旱半干旱区近60 a气象干旱气候特征分析[J]. 干旱气象, 2024, 42(4): 519-526.
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URL: http://www.ghqx.org.cn/EN/10.11755/j.issn.1006-7639(2024)-04-0519
气候区 | 时段 | 连续无雨日 | ||||||
---|---|---|---|---|---|---|---|---|
1~5 d | 6~10 d | 11~15 d | 16~25 d (轻旱) | 26~40 d (中旱) | 41~60 d (重旱) | 60 d以上 (特旱) | ||
干旱区 | 1961—1990年 | 13.1 | 5.7 | 2.9 | 2.7 | 1.5 | 0.8 | 0.8 |
1991—2020年 | 14.1 | 6.0 | 3.0 | 2.7 | 1.4 | 0.8 | 0.8 | |
半干旱区 | 1961—1990年 | 28.2 | 8.3 | 3.4 | 2.5 | 1.1 | 0.4 | 0.1 |
1991—2020年 | 27.7 | 8.6 | 3.5 | 2.6 | 1.0 | 0.4 | 0.2 |
Tab.1
气候区 | 时段 | 连续无雨日 | ||||||
---|---|---|---|---|---|---|---|---|
1~5 d | 6~10 d | 11~15 d | 16~25 d (轻旱) | 26~40 d (中旱) | 41~60 d (重旱) | 60 d以上 (特旱) | ||
干旱区 | 1961—1990年 | 13.1 | 5.7 | 2.9 | 2.7 | 1.5 | 0.8 | 0.8 |
1991—2020年 | 14.1 | 6.0 | 3.0 | 2.7 | 1.4 | 0.8 | 0.8 | |
半干旱区 | 1961—1990年 | 28.2 | 8.3 | 3.4 | 2.5 | 1.1 | 0.4 | 0.1 |
1991—2020年 | 27.7 | 8.6 | 3.5 | 2.6 | 1.0 | 0.4 | 0.2 |
气候区 | 时段 | 连续无雨日 | ||||||
---|---|---|---|---|---|---|---|---|
1~5 d | 6~10 d | 11~15 d | 16~25 d (轻旱) | 26~40 d (中旱) | 41~60 d (重旱) | 60 d以上 (特旱) | ||
干旱区 | 1961—1990年 | 34.3 | 43.6 | 36.7 | 52.2 | 48.6 | 38.7 | 77.1 |
1991—2020年 | 36.2 | 46.3 | 37.9 | 53.5 | 43.1 | 39.8 | 77.2 | |
半干旱区 | 1961—1990年 | 69.3 | 62.8 | 43.7 | 48.2 | 34.2 | 21.3 | 13.2 |
1991—2020年 | 68.4 | 65.6 | 43.9 | 49.6 | 32.0 | 19.6 | 14.7 |
Tab.2
气候区 | 时段 | 连续无雨日 | ||||||
---|---|---|---|---|---|---|---|---|
1~5 d | 6~10 d | 11~15 d | 16~25 d (轻旱) | 26~40 d (中旱) | 41~60 d (重旱) | 60 d以上 (特旱) | ||
干旱区 | 1961—1990年 | 34.3 | 43.6 | 36.7 | 52.2 | 48.6 | 38.7 | 77.1 |
1991—2020年 | 36.2 | 46.3 | 37.9 | 53.5 | 43.1 | 39.8 | 77.2 | |
半干旱区 | 1961—1990年 | 69.3 | 62.8 | 43.7 | 48.2 | 34.2 | 21.3 | 13.2 |
1991—2020年 | 68.4 | 65.6 | 43.9 | 49.6 | 32.0 | 19.6 | 14.7 |
气候区 | 时段 | 连续无雨日 | ||||||
---|---|---|---|---|---|---|---|---|
1~5 d | 6~10 d | 11~15 d | 16~25 d (轻旱) | 26~40 d (中旱) | 41~60 d (重旱) | 60 d以上 (特旱) | ||
干旱区 | 1961—1990年 | 2.6 | 7.7 | 12.8 | 19.6 | 31.7 | 48.8 | 94.1 |
1991—2020年 | 2.6 | 7.7 | 12.7 | 19.6 | 31.9 | 48.9 | 101.6 | |
半干旱区 | 1961—1990年 | 2.5 | 7.6 | 12.7 | 19.6 | 31.5 | 48.5 | 90.8 |
1991—2020年 | 2.5 | 7.6 | 12.7 | 19.5 | 31.7 | 47.9 | 92.7 |
Tab.3
气候区 | 时段 | 连续无雨日 | ||||||
---|---|---|---|---|---|---|---|---|
1~5 d | 6~10 d | 11~15 d | 16~25 d (轻旱) | 26~40 d (中旱) | 41~60 d (重旱) | 60 d以上 (特旱) | ||
干旱区 | 1961—1990年 | 2.6 | 7.7 | 12.8 | 19.6 | 31.7 | 48.8 | 94.1 |
1991—2020年 | 2.6 | 7.7 | 12.7 | 19.6 | 31.9 | 48.9 | 101.6 | |
半干旱区 | 1961—1990年 | 2.5 | 7.6 | 12.7 | 19.6 | 31.5 | 48.5 | 90.8 |
1991—2020年 | 2.5 | 7.6 | 12.7 | 19.5 | 31.7 | 47.9 | 92.7 |
Fig.2 The inter-annual variation of frequency of drought with different grades in arid (the left) and semi-arid (the right) climate regions of China during 1961-2020
Fig.3 The inter-annual variation of occurrence days of drought with different grades in arid (the left) and semi-arid (the right) region of China during 1961-2020
Fig.4 The spatial distribution of the difference between the total number of droughts in arid and semi-arid regions of China from 1991 to 2020 and from 1961 to 1990 (Unit: times)
Fig.5 The spatial distribution of the difference of the occurrence days of partial drought (a), moderate drought (b), severe drought (c) and extreme drought (d) between 1991-2020 and 1961-1990 in the arid and semi-arid climate regions of China (Unit: d)
干旱等级 | 发生次数检验 | 发生日数检验 | ||
---|---|---|---|---|
干旱区 | 半干旱区 | 干旱区 | 半干旱区 | |
轻旱 | 1 | 1 | 1 | 1 |
中旱 | 0 | 3 | 0 | 4 |
重旱 | 3 | 3 | 3 | 3 |
特旱 | 4 | 1 | 4 | 1 |
Tab.4 The significance test of difference of mean frequency and occurrence days of different grades drought between 1961-1990 and 1991-2020 in arid and semi-arid regions of China
干旱等级 | 发生次数检验 | 发生日数检验 | ||
---|---|---|---|---|
干旱区 | 半干旱区 | 干旱区 | 半干旱区 | |
轻旱 | 1 | 1 | 1 | 1 |
中旱 | 0 | 3 | 0 | 4 |
重旱 | 3 | 3 | 3 | 3 |
特旱 | 4 | 1 | 4 | 1 |
Fig.6 The significance test of difference of mean precipitation (a) and potential evapotranspiration (b) between 1961-1990 and 1991-2020 in arid and semi-arid climate regions of China
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