甘肃省陇东地区夏季极端降水及典型年环流特征分析

doi:10.13866/j.azr.2021.03.19

Abstract

Abstract:

Global climate change accelerates the global and regional hydrological cycle processes, which alter the spatio-temporal distribution of precipitation. Consequently, extreme precipitation events are becoming ever more frequent, which greatly impacts people’s lives. Longdong Region is a semi-arid area with a fragile ecological environment. Therefore, the extreme summer precipitation in this region has a more direct and significant impact on agricultural production, the ecological environment, and people’s lives. We used the daily precipitation data from 13 meteorological stations and NCEP/NCAR reanalysis data in the Longdong Region as the basis for exploring five extreme precipitation indices to explore spatio-temporal characteristics of extreme summer precipitation from 1967 to 2015 and the circulation characteristics of typical years with the help of the empirical orthogonal function (EOF) and composite analysis. The preliminary results showed that the extreme summer precipitation indices are smaller in the Northwest of the Longdong Region than in the south and Northeast, showing an overall upward trend. The EOF eigenvectors of the first mode are “+” in the whole area, “+” for the second mode in the south, and “-” in the north. The “strong in the south (north) and weak in the north (south)” distribution features of extreme summer precipitation are the most obvious in the year, with the maximum (minimum) time coefficient in the second mode. In the typical strong (weak) extreme summer precipitation year, there are (not) cold and warm air convergence in Longdong Region. The ascending (descending) motion in the study area was enhanced, and the outgoing longwave radiation (OLR) anomaly is negative (positive), indicating the convective activity is strong (weak), corresponding to more (less) precipitation. Meanwhile, the convergence (divergence) of water vapor flux is favorable (unfavorable) to the generation of extreme summer precipitation. In conclusion, the atmospheric circulation, dynamic conditions, and water vapor conditions all affect the anomalous changes of extreme summer precipitation in the study area. This paper’s results contribute to a deeper understanding of the characteristics and influencing factors of extreme summer precipitation in the Longdong Region, which provides meaningful references for regional disaster prevention and mitigation.

Key words: extreme precipitation, Longdong Region, atmospheric circulation, dynamic condition, water vapor

LIU Mengyang,WANG Xiaojun,KE Hang,LUO Zhiwen,YIN Yixing. Analysis of extreme summer precipitation characteristics and typical years’circulation characteristics in Longdong Region[J].Arid Zone Research, 2021, 38(3): 775-784.

Figures/Tables 9

Fig. 1

Fig. 2

Fig. 3

Tab. 1

Fig. 4

Fig. 5

Tab. 2

Fig. 6

Fig. 7

References 30

[1]	Aalst M K V. The Impacts of climate change on the risk of natural disasters[J]. Disasters, 2006,30(1):5-18. doi: 10.1111/disa.2006.30.issue-1
[2]	Hu Y, Maskey S, Uhlenbrook S. Trends in temperature and rainfall extremes in the Yellow River source region, China[J]. Climatic Change, 2012,110(1-2):403-429. doi: 10.1007/s10584-011-0056-2
[3]	Stott P. How climate change affects extreme weather events[J]. Science, 2016,352(6293):1517-1518. doi: 10.1126/science.aaf7271
[4]	IPCC. Managing the Risks of Extreme Events and Disasters to Advance Climate Change Adaptation. A Special Report of Working Groups I and II of the Intergovernmental Panel on Climate Change[R]. Cambridge: Cambridge University Press, 2012.
[5]	高涛, 谢立安. 近50年来中国极端降水趋势与物理成因研究综述[J]. 地球科学进展, 2014,29(5):577-589.
	[ Gao Tao, Xie Li’an. Study on progress of the trends and physical causes of extreme precipitation in China during the last 50 years[J]. Advances in Earth Science, 2014,29(5):577-589. ]
[6]	陈海山, 范苏丹, 张新华. 中国近50 a极端降水事件变化特征的季节性差异[J]. 大气科学学报, 2009,32(6):744-751.
	[ Chen Haishan, Fan Sudan, Zhang Xinhua. Seasonal differences of variation characteristics of extreme precipitation events over China in the last 50 years[J]. Transactions of Atmospheric Sciences, 2009,32(6):744-751. ]
[7]	Zhang Q, Singh V P, Sun P, et al. Precipitation and streamflow changes in China: Changing patterns, causes and implications[J]. Journal of Hydrology, 2011,410(3-4):204-216. doi: 10.1016/j.jhydrol.2011.09.017
[8]	卢珊, 胡泽勇, 王百朋, 等. 近56年中国极端降水事件的时空变化格局[J]. 高原气象, 2020,39(4):683-693.
	[ Lu Shan, Hu Zeyong, Wang Baipeng, et al. Spatio-temporal patterns of extreme precipitation events over China in recent 56 years[J]. Plateau Meteorology, 2020,39(4):683-693. ]
[9]	陈金明, 陆桂华, 吴志勇, 等. 1960—2009年中国夏季极端降水事件与气温的变化及其环流特征[J]. 高原气象, 2016,35(3):675-684.
	[ Chen Jinming, Lu Guihua, Wu Zhiyong, et al. Change properties of summer extreme precipitation events and temperature and associated large-scale circulation in China during 1960-2009[J]. Plateau Meteorology, 2016,35(3):675-684. ]
[10]	韩翠, 尹义星, 黄伊涵, 等. 江淮梅雨区1960—2014年夏季极端降水变化特征及影响因素[J]. 气候变化研究进展, 2018,14(5):445-455.
	[ Han Cui, Yin Yixing, Huang Yihan, et al. Variation characteristics and influencing factors of extreme precipitation in the Meiyu area of Yangtze-Huai River Basin during 1960-2014[J]. Climate Change Research, 2018,14(5):445-455. ]
[11]	陈晓燕. 中国北方极端降水事件特征及成因研究[D]. 兰州: 兰州大学, 2012.
	[ Chen Xiaoyan. Studies on the Characteristics and Formative Causes of Extreme Precipitation Events in the Northern China[D]. Lanzhou: Lanzhou University, 2012. ]
[12]	林纾, 王毅荣. 中国黄土高原地区降水时空演变[J]. 中国沙漠, 2007,27(3):502-508.
	[ Lin Shu, Wang Yirong. Spatial-temporal evolution of precipitation in China Loess Plateau[J]. Journal of Desert Research, 2007,27(3):502-508. ]
[13]	王晖, 隆霄, 马旭林, 等. 近50 a中国西北地区东部降水特征[J]. 干旱区研究, 2013,30(4):712-718.
	[ Wang Hui, Long Xiao, Ma Xulin, et al. Precipitation in the eastern part of Northwest China in recent 50 years[J]. Arid Zone Research, 2013,30(4):712-718. ]
[14]	商沙沙, 廉丽姝, 马婷, 等. 近54 a中国西北地区来气温和降水的时空变化特征[J]. 干旱区研究, 2018,35(1):68-76.
	[ Shang Shasha, Lian Lishu, Ma Ting, et al. The temporal and spatial characteristics of temperature and precipitation in northwestern China in recent 54 years[J]. Arid Zone Research, 2018,35(1):68-76. ]
[15]	赵庆云, 张武, 王式功, 等. 西北地区东部干旱半干旱区极端降水事件的变化[J]. 中国沙漠, 2005,25(6):112-117.
	[ Zhao Qingyun, Zhang Wu, Wang Shigong, et al. Change of extreme precipitation events in arid and semi-arid regions in the east of Northwest China[J]. Journal of Desert Research, 2005,25(6):112-117. ]
[16]	王兴梅, 张勃, 戴声佩, 等. 甘肃省黄土高原区夏季极端降水的时空特征[J]. 中国沙漠, 2011,31(1):223-229.
	[ Wang Xingmei, Zhang Bo, Dai Shengpei, et al. Spatial and temporal characteristics of summer extreme precipitation in Loess Plateau of Gansu Province, China[J]. Journal of Desert Research, 2011,31(1):223-229. ]
[17]	李志, 郑粉莉, 刘文兆. 1961—2007年黄土高原极端降水事件的时空变化分析[J]. 自然资源学报, 2010,25(2):291-299.
	[ Li Zhi, Zheng Fenli, Liu Wenzhao. Analyzing the spatial-temporal changes of extreme precipitation events in the Loess Plateau from 1961 to 2007[J]. Journal of Natural Resources, 2010,25(2):291-299. ]
[18]	姜广旭, 刘九夫, 王小军, 等. 甘肃省陇东地区极端降水的时空特征[J]. 水电能源科学, 2020,38(2):9-12.
	[ Jiang Guangxu, Liu Jiufu, Wang Xiaojun, et al. Temporal and spatial characteristics of extreme precipitation in Longdong Region[J]. Water Resources and Power, 2020,38(2):9-12. ]
[19]	王雅琦, 冯娟, 李建平, 等. 西北地区东部夏季降水年际变化特征及其与环流的关系[J]. 高原气象, 2020,39(2):290-300.
	[ Wang Yaqi, Feng Juan, Li Jianping, et al. Interannual variation of summer precipitation in the eastern of Northwest China and its relationship with circulation[J]. Plateau Meteorology, 2020,39(2):290-300. ]
[20]	邵小路, 姚凤梅, 张佳华, 等. 华北地区夏季旱涝的大气环流特征诊断[J]. 干旱区研究, 2014,31(1):131-137.
	[ Shao Xiaolu, Yao Fengmei, Zhang Jiahua, et al. General circulation over north China in drought and flood summers[J]. Arid Zone Research, 2014,31(1):131-137. ]
[21]	杨莲梅, 关学锋, 张迎新. 亚洲中部干旱区降水异常的大气环流特征[J]. 干旱区研究, 2018,35(2):249-259.
	[ Yang Lianmei, Guan Xuefeng, Zhang Yingxin. Study on atmospheric circulation characteristics of precipitation anomalies in arid region of Central Asia[J]. Arid Zone Research, 2018,35(2):249-259. ]
[22]	皮原月. 西北干旱区极端气候变化及其与大气环流和海表温度的联系[D]. 乌鲁木齐: 新疆大学, 2017.
	[ Pi Yuanyue. Extreme Climate Change and Its Relationship with Atmospheric Circulation and Sea Surface Temperature in the Arid Area of Northwest China[D]. Urumqi: Xinjiang University, 2017. ]
[23]	Chauvin F, Denvil S. Changes in severe indices as simulated by two French coupled global climate models[J]. Global and Planetary Change, 2007,57(1-2):96-117. doi: 10.1016/j.gloplacha.2006.11.028
[24]	Lorenz E N. Empirical orthogonal functions and statistical weather prediction[R]. Cambridge: MIT Department of Meteorology, 1956.
[25]	曹鸿兴, 魏凤英, 刘生长. 多步预测的降水时序模型[J]. 应用气象学报, 1993,4(2):198-204.
	[ Cao Hongxing, Wei Fengying, Liu Shengzhang. Multi-step prediction model of time series for precipitation[J]. Quarterly Journal of Applied Meteorology, 1993,4(2):198-204. ]
[26]	魏凤英, 曹鸿兴. 模糊均生函数模型及其应用[J]. 气象, 1993,19(2):7-11.
	[ Wei Fengying, Cao Hongxing. A fuzzy mean generating function (FMGF) model and its application[J]. Meteorological Monthly, 1993,19(2):7-11. ]
[27]	施能, 魏风英, 封国林, 等. 气象场相关分析及合成分析中蒙特卡洛检验方法及应用[J]. 南京气象学院学报, 1997,20(3):355-359.
	[ Shi Neng, Wei Fengying, Feng Guolin, et al. Monte Carlo Test used in correlation and composite analysis of meteorological fields[J]. Journal of Nanjing Institute of Meteorology, 1997,20(3):355-359. ]
[28]	林爱兰, 梁建茵. 向外长波辐射(OLR)与广东降水[J]. 热带气象学报, 1993,9(3):248-255.
	[ Lin Ailan, Liang Jianyin. Correlation between outgoing longwave radiation (OLR) and precipitation in Guangdong[J]. Journal of Tropical Meteorology, 1993,9(3):248-255. ]
[29]	赵红岩, 王有恒, 王兴, 等. 1961—2008年中国西北东部旱涝异常分布及干旱变化特征[J]. 干旱区地理, 2012,35(4):552-558.
	[ Zhao Hongyan, Wang Youheng, Wang Xing, et al. Anomaly distribution of drought-flood and changing characteristics of arid over eastern Northwest China during 1961-2008[J]. Arid Land Geography, 2012,35(4):552-558. ]
[30]	Ding Y, Wang Z, Sun Y. Inter-decadal variation of the summer precipitation in East China and its association with decreasing Asian summer monsoon. Part I: Observed evidences[J]. International Journal of Climatology, 2008,28(9):1139-1161. doi: 10.1002/joc.v28:9

指数	方差贡献率/%
指数	第一模态	第二模态	累积
PINT	45.82	15.23	61.05
PX1D	32.00	18.02	50.02
PX5D	48.02	14.15	62.17
PQ90	37.46	15.29	52.75
PNL90	38.68	16.19	54.87

	100 hPa	200 hPa	500 hPa	850 hPa
强极端降水年	+	-	-	-
弱极端降水年	+	-	+	+

Analysis of extreme summer precipitation characteristics and typical years’circulation characteristics in Longdong Region

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 9

References 30

Related Articles 15

Metrics

Comments

Recommended 0

[1]	WANG Nana,HAN Lei,LIU Lili,PENG Ling,ZHOU Peng,Ma Yunlei,Ma Jun. Water vapor transport mechanisms for varied precipitation grades during the summer half-year in Yinchuan Plain [J]. Arid Zone Research, 2023, 40(9): 1404-1413.
[2]	YUAN Ruiqiang,Li Zejun. Research progress in non-rainfall water: A review [J]. Arid Zone Research, 2023, 40(7): 1075-1084.
[3]	HUANG Ying, WANG Suyan, MA Yang, WANG Dai, ZHANG Wen, WANG Fan. Change characteristics and circulation anomaly analysis of cold wave in Ningxia over the past 60 years [J]. Arid Zone Research, 2023, 40(11): 1718-1728.
[4]	GAO Jie,ZHAO Yong,YAO Junqiang,Dilinuer TUOLIEWUBIEKE,WANG Mengyuan. Spatiotemporal evolution of atmospheric water cycle factors in arid regions of Central Asia under climate change [J]. Arid Zone Research, 2022, 39(5): 1371-1384.
[5]	WANG Jian,HAN Haidong,XU Junli,YAN Wei. Chemical characteristics and their influencing factors of precipitation at the end of the Koxkar Glacier, Tianshan Mountains [J]. Arid Zone Research, 2022, 39(2): 347-358.
[6]	DING Yingying,QIU Dexun,WU Changxue,MU Xingmin,GAO Peng. Spatial-temporal variations in extreme precipitation and their relationship with atmospheric circulation in the Guanzhong Plain [J]. Arid Zone Research, 2022, 39(1): 104-112.
[7]	LEI Shijun,WANG Shengjie,ZHU Xiaofan,ZHANG Mingjun. Simulation of stable hydrogen and oxygen isotopes in atmospheric water vapor based on an evaporation pan experiment [J]. Arid Zone Research, 2022, 39(1): 21-29.
[8]	ZENG Kangkang,YANG Yuhui,HU Yicheng,FENG Xiancheng. Isotopic characteristics and water vapor sources of precipitation in the Kashi River Basin [J]. Arid Zone Research, 2021, 38(5): 1263-1273.
[9]	ZHANG Taixi,FAN Jing,LI Yuanpeng,YU Xingjie. Heatwave changes and the potential causes in Xinjiang from 1961 to 2018 [J]. Arid Zone Research, 2021, 38(5): 1274-1284.
[10]	LUO Zhiwen,WANG Xiaojun,LIU Mengyang,KE Hang,WAN Ting,YIN Yixing. Spatiotemporal characteristics of extreme precipitation in Shaanxi Province based on the regional L-moments method [J]. Arid Zone Research, 2021, 38(5): 1295-1305.
[11]	ZOU Lei,YU Jiangyou,WANG Feiyu,ZHANG Yan. Spatial-temporal variations of extreme precipitation indices and their response to atmospheric circulation factors in the Weihe River Basin [J]. Arid Zone Research, 2021, 38(3): 764-774.
[12]	ZHANG Junlan,LUO Ji,WANG Rongmei. Combined analysis of the spatiotemporal variations in snowmelt (ice) flood frequency in Xinjiang over 20 years and atmospheric circulation patterns [J]. Arid Zone Research, 2021, 38(2): 339-350.
[13]	GAO Jing,JING Lihong,QIN Rong,MAO Rong,JING Lijun. Snowstorm characteristics and its relationship with atmospheric circulation and sea surface temperature in Tacheng Region, Xinjiang [J]. Arid Zone Research, 2021, 38(2): 359-368.
[14]	CAO Lijun,SUN Huilan,LAN Xiaoli,ZHANG Lele,LU Baobao,LIU Tianyi. Spatio-temporal evolution of the extreme dry and wet events in Tianshan Mountains, Xinjiang, China [J]. Arid Zone Research, 2021, 38(1): 188-197.
[15]	MA Ai-hua, YUE Da-peng, ZHAO Jing-bo, HU Qian. Spatiotemporal Variation and Effect of Extreme Precipitation in Inner Mongolia in Recent 60 Years [J]. Arid Zone Research, 2020, 37(1): 74-85.