SPATIAL DISTRIBUTION AND VARIATION TENDENCY OF DROUGHTS AND FLOODS IN HUNAN PROVINCE DURING THE PAST 36 YEARS

ZHANG Jian-ming; ZHANG Xin-ping; LI Zu-xian; et al.

Abstract:

Using the 1970–C2005 annual precipitation and evaporation data at 80 gauge stations across Hunan province, this work analyzes the spatial distribution and variation tendency of the local droughts and floods using linear regression, wavelet analysis, abrupt change, clusters, Empirical Orthogonal Function (EOF) and rotated EOF (REOF). Results show that there are four dry areas and three wet areas in Hunan. The whole province exhibits a moistening trend except some small areas in western, eastern and southern Hunan. The most prominent feature of annual precipitation is that the whole province basically displays a consistent variation tendency, as far as the dominant EOF mode is concerned. In addition, the spatial features of the other EOF modes include dry-wet differences, e.g. wet (or dry) in the north versus dry (or wet) in the south, wet (or dry) in the center and dry (or wet) in the surrounding areas. The distribution of the ratios of evaporation to precipitation exhibits both common features as well as spatial differences, which can be classified into four types: South Hunan, North Hunan, Northeast Hunan, and Central Hunan. There is an abrupt change from dry to wet patterns in the early 1990s. Generally, the drought-flood distribution presents variations of three periods. In the late 2000s, Hunan province will be in a period of drought, followed by a period of flood.

Get Citation+

ZHANG Jian-ming, ZHANG Xin-ping, LI Zu-xian, et al. SPATIAL DISTRIBUTION AND VARIATION TENDENCY OF DROUGHTS AND FLOODS IN HUNAN PROVINCE DURING THE PAST 36 YEARS [J]. Journal of Tropical Meteorology, 2011, 17(4): 385-391.

Export:

Article Metrics

SPATIAL DISTRIBUTION AND VARIATION TENDENCY OF DROUGHTS AND FLOODS IN HUNAN PROVINCE DURING THE PAST 36 YEARS

Zhuzhou Meteorological Bureau

Abstract: Using the 1970–C2005 annual precipitation and evaporation data at 80 gauge stations across Hunan province, this work analyzes the spatial distribution and variation tendency of the local droughts and floods using linear regression, wavelet analysis, abrupt change, clusters, Empirical Orthogonal Function (EOF) and rotated EOF (REOF). Results show that there are four dry areas and three wet areas in Hunan. The whole province exhibits a moistening trend except some small areas in western, eastern and southern Hunan. The most prominent feature of annual precipitation is that the whole province basically displays a consistent variation tendency, as far as the dominant EOF mode is concerned. In addition, the spatial features of the other EOF modes include dry-wet differences, e.g. wet (or dry) in the north versus dry (or wet) in the south, wet (or dry) in the center and dry (or wet) in the surrounding areas. The distribution of the ratios of evaporation to precipitation exhibits both common features as well as spatial differences, which can be classified into four types: South Hunan, North Hunan, Northeast Hunan, and Central Hunan. There is an abrupt change from dry to wet patterns in the early 1990s. Generally, the drought-flood distribution presents variations of three periods. In the late 2000s, Hunan province will be in a period of drought, followed by a period of flood.

HTML

Reference (30)

[1]	ZHENG Chang-yuan. Summaries of natural disasters across the globe [J]. Dis. Reduc. China, 2000, 10(1): 14-19.
[2]	FAN Ning-jun. Natural Disasters in China and Their Mitigation Measures [M]. Heilongjiang: Education Press of Heilongjiang, 1998.
[3]	SHI Ya-feng. The possible tendencies of natural disasters under the impacts of global warming in China [J]. J. Nat. Dis., 1996, 5(2): 102-117.
[4]	MA Zhu-guo, FU Cong-bin. Trend of surface humid index in the arid area of northern China [J]. Acta Meteor. Sinica, 2001, 59(6): 738-746.
[5]	CHEN Jia-qi, SHI Neng. The preliminary study on possible scenarios of flood and drought in China in the case of global warming [J]. Sci. Geograph. Sinica, 1995, 15(3): 201-207.
[6]	MA Zhu-guo, REN Xiao-bo. Drying trend over China from 1951 to 2006 [J]. Adv. Climate Change Res., 2007, 3(4): 195-201.
[7]	LU Jing-hua, LI Guo-ping, XUE Sheng. Climate characteristics about heavy drought and flood in upper, middle and lower reaches of Yangtze River and Yellow River valley in flood season [J]. J. Trop. Meteor., 2002, 18(4): 262-268.
[8]	ZHU Xiao-hua, CAI Yun-long, WANG Jian. On fractal characters of drought and flood of China [J]. Adv. Earth Sci., 2003, 18(4): 509-514.
[9]	DENG Zheng-yong, ZHANG Qiang, YIN Xian-zhi, et al. Response of drought damage to arid climate change [J]. J. Glaciol. Geocryol., 2007, 29(2): 114-118.
[10]	MA Zhu-guo, FU Zong-bin. Basic facts of aridification in northern China from 1951 to 2004 [J]. Chin. Sci. Bull., 2006, 51(20): 2429-2439.
[11]	HUANG Rong-hui, CAI Rong-shuo, CHEN Ji-long. Inter-decadal variations of drought and flooding disasters in China and their association with the East Asian climate system [J]. Chin. J. Atmos. Sci., 2006, 30(5): 730-743.
[12]	LI Ke-rang, YIN Si-ming, SHA Wan-ying. Characters of time-space of recent drought in China [J]. Geograph. Res., 1996, 15(3): 6-15.
[13]	MA Zhu-guo, FU Zong-bin. Facts about global aridification in the second half of the 20th centuary and their links with large-scale background [J]. Sci. China (Ser. D: Earth Sci.), 2007, 37(2): 222-233.
[14]	PAN Yao-zhong, GONG Dao-yi, WANG Ping. A research on temporal-spatial characteristics of drought in China during 1949-1990 [J]. J. Beijing Normal Univ. (Nat. Sci.), 1996, 32(1): 138-142.
[15]	Research team on Disasters of National Economic Trades, State Planning Committee, Ministry of Science and Technology. Disasters, Society, Disaster Mitigation and Development [M]. Beijing: China Meteorological Press, 2000.
[16]	ZENG Qing-hua, ZHU Yan-de. Encyclopedia on Meteorological Disasters in China: Hunan [M]. Beijing: China Meteorological Press, 2006.
[17]	ZUO Li-fang, QIU Cai-xing. The characteristics of drought and influence on economy in Hunan [J]. Econ. Geography, 2000, 20(2): 36-39.
[18]	LI Jing-bao, ZHENG Yun-you, GAO Chang-hai, et al. A discussion on geographical regularity of flood and drought in Hunan Province [J]. J. Nat. Disas., 2000, 9(4): 115-120.
[19]	YUAN Hua-bin, LI Jing-bao. Features of Agriculture disaster of droughty & deluge resourcenization in Hunan province [J]. Yunnan Geograph. Environ. Res., 2006, 18(5): 14-18.
[20]	REN Zhi-hua, LI Ming-qin, ZHANG Wei-min. Conversion coefficient of small evaporation pan into E-601B pan in China [J]. J. Appl. Meteor. Sci., 2002, 13(4): 508-512.
[21]	WEI Fei-ying. Comtemporary Techniques on Statistic Diagnoses and Prediction of Climate [M]. Beijing: China Meteorological Press, 1999.
[22]	LIN Zhen-shan. On the Theories and Models of Phase Space for Long-term Forecasting [M]. Beijing: China Meteorological Press, 1993.
[23]	LIN Zhen-shan. On the Diagnostic Techniques of Wavelet Climatologies [M]. Beijing: China Meteorological Press, 1999.
[24]	TORRENCE C, COMPO G P. A Practical Guide to Wavelet Analysis [J]. Bull. Amer. Meteor. Soc., 1998, 79(1): 61-78.
[25]	XU Zhen-shuang. Discussions on the effect of Hunan topography on precipitation [J]. Water Conserv. Hydrol. Power, 1990, (2): 37-42.
[26]	LIU Hui-yu, LIN Zhen-shan, ZHANG Ming-yang. Space-time characteristics of precipitation anomaly during the raining season in Hunan [J]. J. Trop. Meteor., 2004, 20(4): 409-418.
[27]	ZHANG Jian-ming, LI Zu-xian, ZHANG Xin-ping. Precipitation Change in Hunan Province [J]. Adv. Climate Change Res., 2008, 4(2):101-105.
[28]	ZHANG Jian-ming, LI Zu-xian, ZHANG Xin-ping, et al. Climatological features of annual precipitation in Hunan province during 46a [J]. J. Trop. Meteor., 2008, 24(5): 512-518.
[29]	JIA Jian-yin, SUN Zhao-bo, LIU Xiang-wen, et al. Evolution of summer precipitation quasi-biennial oscillation in eastern China [J]. Chin. J. Atmos. Sci., 2009, 33(2): 397-407.
[30]	DUAN Chang-chun, SUN Ji-hua. Relationship between abnormal solar activities and precipitation and temperature in China [J]. Meteor. Sci. Technol., 2006, 34(4): 381-386.

SPATIAL DISTRIBUTION AND VARIATION TENDENCY OF DROUGHTS AND FLOODS IN HUNAN PROVINCE DURING THE PAST 36 YEARS

Abstract:

References

Get Citation+

Share Article

Article Metrics

Proportional views

Manuscript History

Online:

通讯作者: 陈斌, bchen63@163.com