GSTDTAP  > 气候变化
DOI10.3354/cr01539
Observed trends in climate extremes over Bangladesh from 1981 to 2010
Khan, Md. Jamal Uddin; Islam, A. K. M. Saiful; Das, Mohan Kumar; Mohammed, Khaled; Bala, Sujit Kumar; Islam, G. M. Tarekul
2018
发表期刊CLIMATE RESEARCH
ISSN0936-577X
EISSN1616-1572
出版年2018
卷号77期号:1页码:45-61
文章类型Article
语种英语
国家Bangladesh
英文摘要

Bangladesh regularly faces various extreme events (floods, droughts, cyclones, and heat waves), but there is a knowledge gap between average climate and climate extremes over the country. The purpose of this study is to quantify the trends over Bangladesh for the period 1981-2010 using the extreme temperature and precipitation indices developed by the CCI/ WCRP/JCOMM Expert Team on Climate Change Detection and Indices. We used precipitation and temperature data from 26 meteorological stations, calculated trends in the indices using Sen's slope estimator, and tested significance using the non-parametric Mann-Kendall trend test. For the temperature indices, we found an overall increasing warming trend. Average annual maximum and minimum temperatures increased by 0.3 and 0.4 degrees C decade(-1) respectively. A faster rise of both maximum and minimum temperature was found compared with previous studies. The frequency of warm days increased by 12 days decade(-1). The frequency of warm (cold) nights increased (decreased) by 7 (11) days decade(-1). The overall warming was accelerated at the end of the climatic period (2001-2010). Precipitation indices showed an overall decreasing trend, in contrast to other studies in this region. Trends in consecutive dry days (CDD) indicated a drying tendency at a rate of 10 days decade(-1). A decreasing rate of about 84 mm decade(-1) was observed in annual average total precipitation. Except for CDD, most of the precipitation trends were statistically not significant and spatially incoherent. Statistically significant change was observed in extreme temperature events, with a strong and consistent spatial pattern. Our results pave the way for further investigations into future changes using results from climate simulations.


英文关键词Extreme indices Expert Team on Climate Change Detection and Indices ETCCDI Bangladesh Observed records Climate change
领域气候变化
收录类别SCI-E
WOS记录号WOS:000456195100003
WOS关键词SUMMER MONSOON RAINFALL ; DAILY TEMPERATURE ; SOUTH-AMERICA ; CO2 EMISSIONS ; PRECIPITATION ; INDEXES ; FLOODS ; IMPACTS ; VULNERABILITY ; PROBABILITY
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/38609
专题气候变化
作者单位BUET, Inst Water & Flood Management, Dhaka 1000, Bangladesh
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GB/T 7714
Khan, Md. Jamal Uddin,Islam, A. K. M. Saiful,Das, Mohan Kumar,et al. Observed trends in climate extremes over Bangladesh from 1981 to 2010[J]. CLIMATE RESEARCH,2018,77(1):45-61.
APA Khan, Md. Jamal Uddin,Islam, A. K. M. Saiful,Das, Mohan Kumar,Mohammed, Khaled,Bala, Sujit Kumar,&Islam, G. M. Tarekul.(2018).Observed trends in climate extremes over Bangladesh from 1981 to 2010.CLIMATE RESEARCH,77(1),45-61.
MLA Khan, Md. Jamal Uddin,et al."Observed trends in climate extremes over Bangladesh from 1981 to 2010".CLIMATE RESEARCH 77.1(2018):45-61.
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