文章基本信息

标题：STATISTICAL ANALYSIS AND TRENDS OF DRY DAYS IN SYLHET REGION OF BANGLADESH
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作者：Syed Mustakim Ali Shah ; G. M. Jahid Hasan
期刊名称：Journal of Urban and Environmental Engineering
印刷版ISSN：1982-3932
电子版ISSN：1982-3932
出版年度：2014
卷号：8
期号：1
页码：48-58
语种：English
出版社：Universidade Federal da Paraíba
其他摘要：The rainfall distribution in Bangladesh is not uniform and refl ecting topography. Hilly Sylhet region receives substantial rainfall every year compare to other regions of Bangladesh. Though Sylhet region is less vulnerable to drought but weather pattern is not constant and changing day by day. Hence as a part of drought an alysis, behavior of dry days is important. This study focuses on dry days pattern and associ ated changes from daily records of last 54 years for Sylhet region. Monthly, yearly and seasonal variations of dry days were analyzed to check for major changes. In order to inve stigate extreme dry events, time history of monthly dry days data were transformed into fre quency domain using the Fast Fourier Transform (FFT). Variability of dry days in tim e scale was also checked from filtered signals which is very useful for drought a nalysis, agricultural development and disaster management for the north-east region of Bangladesh.
关键词：Dry days distribution; statistical behavior; linear trend; Fast Fourier Transform; Sylhet
其他关键词：Dry days distribution; statistical behavior; linear trend; Fast Fourier Transform; Sylhet.