A comprehensive statistical assessment of drought indices to monitor drought status in Bangladesh

被引:55
作者
Uddin, Md Jalal [1 ]
Hu, Jichao [1 ]
Islam, Abu Reza Md Towfiqul [1 ,2 ]
Eibek, Kutub Uddin [2 ]
Nasrin, Zahan Most [1 ]
机构
[1] Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Sch Atmospher Phys, Nanjing 210044, Peoples R China
[2] Begum Rokeya Univ, Dept Disaster Management, Rangpur 5400, Bangladesh
关键词
Drought; SPI; SPEI; WSDI; Rx5day; Cross-wavelet; Bangladesh; RIVER-BASIN; PRECIPITATION; PERFORMANCE;
D O I
10.1007/s12517-020-05302-0
中图分类号
P [天文学、地球科学];
学科分类号
070403 [天体物理学];
摘要
In Bangladesh, drought has negative consequences on agriculture, environments, livelihood, and food security. However, a comprehensive statistical assessment of drought indices has rarely been found in the existing literature. To address this issue, firstly, this paper used daily temperature and precipitation data from the Bangladesh Meteorological Department (BMD) to calculate Standardized Precipitation Index (SPI) and Standardized Precipitation Evapotranspiration Index (SPEI). After that, we performed a statistical assessment, for instance, Pearson correlation coefficient, cross-correlation, cross-wavelet transform, and root mean square error, to identify the strengths of SPI and SPEI. Our findings showed that though both indices had a strong correlation with each other, SPEI performed better than SPI because evaporative demand has a positive impact on defining drought conditions in Bangladesh. Temperature and rainfall indices, for example, warm spell duration indicator (WSDI) and maximum amount of rain (Rx5day) that falls in five consecutive days, have been applied to find out the relationship between climate extremes and drought indices using cross-wavelet transform. Our results suggested that climate extremes such as WSDI and Rx5day have an influence on droughts in Bangladesh. Our results recommended that multi indices of drought assessment should be required in order to draw a robust conclusion.
引用
收藏
页数:10
相关论文
共 40 条
[1]
Comparison of various drought indices to monitor drought status in Pakistan [J].
Adnan, Shahzada ;
Ullah, Kalim ;
Li Shuanglin ;
Gao, Shouting ;
Khan, Azmat Hayat ;
Mahmood, Rashed .
CLIMATE DYNAMICS, 2018, 51 (5-6) :1885-1899
[2]
Analysis of Meteorological Drought Pattern During Different Climatic and Cropping Seasons in Bangladesh [J].
Alamgir, Mahiuddin ;
Shahid, Shamsuddin ;
Hazarika, Manzul Kumar ;
Nashrrullah, Syams ;
Bin Harun, Sobri ;
Shamsudin, Supiah .
JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION, 2015, 51 (03) :794-806
[3]
ALLEY WM, 1984, J CLIM APPL METEOROL, V23, P1100, DOI 10.1175/1520-0450(1984)023<1100:TPDSIL>2.0.CO
[4]
2
[5]
[Anonymous], HIST DROUGHTS CHINA
[6]
[Anonymous], CLIMATIC ZONE
[7]
[Anonymous], 1993, REGIONAL W DROUGHT N
[8]
Anteneh Belayneh Anteneh Belayneh, 2013, Journal of Water and Land Development, P3
[9]
Standardized precipitation evapotranspiration index (SPEI) revisited: parameter fitting, evapotranspiration models, tools, datasets and drought monitoring [J].
Begueria, Santiago ;
Vicente-Serrano, Sergio M. ;
Reig, Fergus ;
Latorre, Borja .
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2014, 34 (10) :3001-3023
[10]
Relating the dynamics of climatological and hydrological droughts in semiarid Botswana [J].
Byakatonda, Jimmy ;
Parida, B. P. ;
Kenabatho, Piet K. .
PHYSICS AND CHEMISTRY OF THE EARTH, 2018, 105 :12-24